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Experimental study of pavement performance of basalt fiber-modified asphalt mixture 被引量:17
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作者 范文孝 康海贵 郑元勋 《Journal of Southeast University(English Edition)》 EI CAS 2010年第4期614-617,共4页
To discuss the pavement performance of basalt fiber-modified asphalt mixtures,the optimum dosages of asphalt and fibers are studied by the Marshall test and the rutting test.The results demonstrate that the optimum do... To discuss the pavement performance of basalt fiber-modified asphalt mixtures,the optimum dosages of asphalt and fibers are studied by the Marshall test and the rutting test.The results demonstrate that the optimum dosages of asphalt and fibers are 4.63% and 0.3%,respectively.Then the pavement performances of basalt(polyester,xylogen)fiber-modified asphalt mixtures are investigated through high temperature stability tests,water stability tests and low temperature crack resistance tests.It indicates that the pavement performances of the fiber-modified asphalt mixtures such as rutting dynamic stability,freezing splitting tensile strength,low temperature crack resistance and so on are improved compared with control asphalt mixture.The results show that the pavement performances of asphalt mixtures can be improved by fiber-modifiers.Besides,the improvement effects of basalt fiber are superior to polyester fiber and xylogen fiber. 展开更多
关键词 asphalt mixture basalt fiber Marshall test high temperature stability test pavement performance
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Long-term performance of recycled asphalt mixtures containing high RAP and RAS
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作者 Jiangmiao Yu Zengyao Lin +3 位作者 Guilian Zou Huayang Yu Zhen Leng Yuan Zhang 《Journal of Road Engineering》 2024年第1期36-53,共18页
The application of reclaimed asphalt pavement(RAP)and reclaimed asphalt shingles(RAS)on asphalt pavement can reduce the asphalt paving cost,conserve energy and protect the environment.However,the use of high contents ... The application of reclaimed asphalt pavement(RAP)and reclaimed asphalt shingles(RAS)on asphalt pavement can reduce the asphalt paving cost,conserve energy and protect the environment.However,the use of high contents of RAP and RAS in asphalt pavement may lead to durability issues,especially the fatigue cracking and thermal cracking.It is necessary to conduct a series of analyses on asphalt mixtures containing high RAP and RAS,and seek methods to enhance their long-term performance.This paper provides a comprehensive over-view of the long-term performance of recycled asphalt mixtures containing high contents of RAP and RAS.The findings in this research show that rutting resistance of high recycled asphalt mixtures is not a concern,whereas their resistance to fatigue and thermal cracking is not conclusive.Recycling agents can be used to improve the thermal cracking resistance of high recycled asphalt mixtures.An optimum decision on recycling agents will improve the durability properties of high recycled asphalt mixtures.It is recommended that to use a balanced mixture design approach with testing of the blended asphalt binders will provide better understanding of long-term performance of recycled asphalt mixtures containing high RAP and RAS. 展开更多
关键词 Recycled asphalt mixture Recycling agents Long-term performance CRACKING
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Design Method and Performance for Large Stone Porous Asphalt Mixtures 被引量:4
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作者 赵永利 黄晓明 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第5期871-876,共6页
Design method for large stone porous asphalt mixtures (LSPM) was analyzed to avoid the early distresses of semi-rigid asphalt pavements. Based on stone-to-stone skeleton structure concept, processes of LSPM gradatio... Design method for large stone porous asphalt mixtures (LSPM) was analyzed to avoid the early distresses of semi-rigid asphalt pavements. Based on stone-to-stone skeleton structure concept, processes of LSPM gradation design was given. The gradation composite design for LSPM shows that the LSPM nominal maximum size ( N MS) should be larger than 26.5 mm, and the NMS sieve passing percentage should be greater than 50%. Through experiments and calculations on the volume properties of the aggregate, the range of aggregate gradation curve of LSPM was given. In terms of asphalt binder's normalized test results, MAC-70 and SBS modified asphalt were selected as the asphalt binders. The applicability of large scale Marshall Method and gyratory compaction method to shape specimens was investigated. Based on the asphalt mixture performance evaluation, the optimum asphalt content range (3.1%-3.6%), the bitumen film's thickness range (13-16 μm) and the air void range (13%-18 %) were recommended. Finally, LSPM was tested by the laboratory performance tests including rutting resistance test, fatigue test and water stability test. The theoretic and practical analysis shows that LSPM has a good performance on water permeability, rutting resistance and reflection crack resistance. 展开更多
关键词 large stone porous asphalt mixtures (LSPM) mixture design performance aggregate gradation optimum asphalt content
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Design of Small Stone Asphalt Mixture based on Anti-skidding Performance 被引量:1
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作者 李蕊 裴建中 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第4期789-793,共5页
Small stone asphalt mixture(SSAM) was designed by Bailey method and coarse aggregate voids-filling method.The optimum asphalt content was determined by Marshal test.Surface texture depth for SSAM with different void... Small stone asphalt mixture(SSAM) was designed by Bailey method and coarse aggregate voids-filling method.The optimum asphalt content was determined by Marshal test.Surface texture depth for SSAM with different voidage,and the BPN of SSAM and SMA before after wet track abrasion were measured.The experimental results indicate that the surface texture depth increases with the decreasing of asphalt aggregate ratio.The SSAM with the optimal asphalt content has a good skid resistance.BPN of asphalt mixture decreases with the increasing of wearing time,but the extent of reduction is different.The reduction rate of BPN for SSAM is smaller than that of SMA,indicating that SSAM has a good skid resistance attenuation capacity.Finally,the other properties of SSAM are also evaluated,showing that the splitting strength and modulus and SSAM are higher than those of SMA,and the other properties of SSAM,such as high-temperature performance and water stability can also satisfy the technical requirements. 展开更多
关键词 small stone asphalt mixture mixture design anti-skidding performance attenuation of skid resistance
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Bamboo Fiber Modified Asphalt Mixture Proportion Design and Road Performances Based on Response Surface Method
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作者 李海滨 SUN Jianmei +3 位作者 WANG Sirui ZHANG Mingming HU Yihong SHENG Yanping 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第1期156-170,共15页
In order to comprehensively utilize the remaining bamboo residue of bamboo products,this paper presents a research on recycling the bamboo fibers from bamboo residue for improving the performance of the asphalt mixtur... In order to comprehensively utilize the remaining bamboo residue of bamboo products,this paper presents a research on recycling the bamboo fibers from bamboo residue for improving the performance of the asphalt mixtures.First of all,the basic performance parameters of sinocalamus affinis fiber,phyllostachys pubescens fiber,green bamboo fiber were tested and analyzed,and the optimal content and length were put forward.Then,the mix ratio design of the bamboo fiber modified asphalt mixture was further designed through the response surface method,and was verified the rationality of the mix ratio.Finally,the mixture specimens were made according to the experimental design mix ratio,and the high temperature,low temperature performance and moisture susceptibility of the bamboo fiber modified mixtures asphalt were tested.The results showed that the high temperature performance,low temperature performance and moisture susceptibility of bamboo fiber modified asphalt mixtures were improved compared with the performance of SBS modified asphalt mixture.When the length of bamboo fiber is 7.25 mm and the content of 0.22%,the road performance of the asphalt mixture was optimal.Consequentially,the decomposition of bamboo residue into bamboo fiber and its application in asphalt pavement can improve the reuse of bamboo waste,with remarkable environmental benefits and great promotion value. 展开更多
关键词 bamboo fiber response surface method asphalt mixture proportion design road performances bamboo waste
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Evaluation of modification effect of epoxy resin based on performance of asphalt mixtures 被引量:4
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作者 杨军 陆海珠 +1 位作者 袁登全 王建伟 《Journal of Southeast University(English Edition)》 EI CAS 2007年第1期122-126,共5页
Based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck, high-temperature rutting test, low-temperature bending test and ... Based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck, high-temperature rutting test, low-temperature bending test and controlled stress flexural fatigue test are used to study the performance of asphalt mixtures modified by epoxy resin including high-temperature stability, low-temperature cracking-resistance, and fatigue cracking-resistance, which are served to evaluate the modification effect of epoxy resin of different contents. With the addition of epoxy resin, all the three performances are improved greatly. However, when the amount of epoxy resin added is over a certain value, the modification effect will be stable with no extra benefit detected. Finally, in terms of the properties of the three respects, 20%, 30%, 30% are given separately as the proposal adding contents. 展开更多
关键词 pavement on steel deck plate content of epoxy resin asphalt mixtures modified by epoxy resin performance modification effect
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Performance and mechanism of solid waste coking sulfur paste modified asphalt mixture before and after curing 被引量:2
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作者 ZHAO Yong-le LI Guo-qiang +3 位作者 LI Tao WANG Hong-yu ZHANG Shu-ting ZHANG Yong-fa 《Journal of Central South University》 SCIE EI CAS CSCD 2021年第7期2179-2192,共14页
For the resource utilization of the solid waste coking sulfur paste and the improvement of performance of the asphalt mixture,a method for preparing modified asphalt mixture with coking sulfur paste modifier(CSPM)is h... For the resource utilization of the solid waste coking sulfur paste and the improvement of performance of the asphalt mixture,a method for preparing modified asphalt mixture with coking sulfur paste modifier(CSPM)is herein proposed.Compared with the matrix asphalt mixture,the Marshall stability of the 30%CSPM modified asphalt mixture increased by 38.3%,the dynamic stability increased by nearly one time(reaching 1847.5 times/mm),the splitting strength ratio increased by 39.3%while the splitting tensile strength decreased by 11.7%.After curing,the performance of the CSPM modified asphalt mixture was further improved.The results show that CSPM improved the high temperature stability and water damage resistance of the asphalt mixture,and the low-temperature anti-cracking performance of that was slightly reduced.Chemical analysis of asphalt binders shows that a little sulfur reacted with asphalt to produce polysulfide compounds(R-Sx-R′),and a part of sulfur existed in the form of crystalline sulfur which was further increased after curing.The presence of crystalline sulfur as an inorganic filler is the key point for improving the high temperature stability and water resistance performance of modified asphalt mixture. 展开更多
关键词 solid waste coking sulfur paste modifier asphalt mixture performance MECHANISM
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Experimental Study on Fatigue Performance of Gussasphalt Mixture
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作者 吴文军 HE Zhaoyi +1 位作者 HAO Zengheng ZHANG Hua 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第4期745-750,共6页
Four-point flexural fatigue test for Gussasphalt mixture specimen was carried out at a straincontrolled mode system. The results showed that the development of the tested stiffness modulus and phase angle of the mixtu... Four-point flexural fatigue test for Gussasphalt mixture specimen was carried out at a straincontrolled mode system. The results showed that the development of the tested stiffness modulus and phase angle of the mixtures with increasing load cycles exhibited three periods, initial generation, slow development and failure period. The fatigue crack generation zone formed in the third period, in which the macro mechanical properties were signifi cantly decreased. Moreover, we also analyzed the effects of asphalt content and mixing temperature on the fatigue life of the mixture. The results showed that the fi rst period when the specimen's initial stiffness modulus was reduced to 80% accounted for 5%-10% of the total fatigue life; the second period in which the reduction became slow and demonstrated a liner relationship with load cycles occupied 70%-85% of the fatigue life; and the third period was about 5%-10%. The results indicated that the lower the mixing temperature, the longer the fatigue life of Gussasphalt mixture. Besides, the increasing of asphalt content has a minor effect on the fatigue life of Gussasphalt mixture 展开更多
关键词 gussasphalt mixture stiffness modulus fatigue performance mix temperature asphalt content
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Laboratory evaluation of epoxy resin modified asphalt mixtures 被引量:13
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作者 钱振东 罗桑 王建伟 《Journal of Southeast University(English Edition)》 EI CAS 2007年第1期117-121,共5页
The pavement performance of epoxy resin modified asphalt mixtures was investigated by the Marshall test, the indirect tensile test, the rutting test, the three-pointed bending test and the composite beam fatigue test.... The pavement performance of epoxy resin modified asphalt mixtures was investigated by the Marshall test, the indirect tensile test, the rutting test, the three-pointed bending test and the composite beam fatigue test. In comparison with the performance of epoxy resin modified asphalt mixtures, the performance of stone matrix asphalt mixtures (SMA10) was also investigated. The rutting test and composite beam fatigue test results show that the epoxy resin modified asphalt mixtures can improve permanent deformation and fatigue characteristics. They also show lower temperature susceptibility and greater resistance to moisture damage compared to the SMA10. Findings from the research indicate that the epoxy resin modified asphalt mixture provides an optional material for the pavement of long-span steel bridges in China due to profound performance and economic advantages. 展开更多
关键词 epoxy resin modified asphalt epoxy resin modified asphalt mixture pavement strength performance
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Relationship between repeated triaxial test and Hamburg wheel tracking test on asphalt mixtures 被引量:4
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作者 朱浩然 杨军 +1 位作者 史啸 陆海珠 《Journal of Southeast University(English Edition)》 EI CAS 2010年第1期117-121,共5页
Both the repeated triaxial test (RTT) and the Hamburg wheel tracking test (HWTT) are adopted to evaluate the high temperature performance of the stone mastic asphalt (SMA) and the mastic asphalt (MA). The corr... Both the repeated triaxial test (RTT) and the Hamburg wheel tracking test (HWTT) are adopted to evaluate the high temperature performance of the stone mastic asphalt (SMA) and the mastic asphalt (MA). The correlation of the permanent deformations of the MA and the correlation of the deformation developments of the SMA between the two tests are analyzed, respectively. Results show that both the two tests can effectively identify the high temperature performance of mixtures, and the correlation between the final results of the two tests as well as that between the deformation developments of the two tests are excellent with R20.9. In order to further prove the correlation, viscoelastic parameters estimated from the RTT results is used to simulate the rutting development in the HWTT slabs by the finite element method (FEM). Results indicate that the correlation between the two tests is significant with errors less than 10%. It is suitable to predict the rutting development with the viscoelastic parameters obtained from the RTT. 展开更多
关键词 asphalt mixture repeated triaxial test Hamburg wheel tracking test CORRELATION high temperature performance finite element method
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Development of overlay tester for fracture test of asphalt mixture 被引量:2
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作者 李兴海 黄卫 钱振东 《Journal of Southeast University(English Edition)》 EI CAS 2013年第3期294-299,共6页
To determine the fracture characteristics of asphalt mixture a novel fracture test with modified loading modes loading fixtures and the control system of the conventional overlay tester is implemented by the asphalt m... To determine the fracture characteristics of asphalt mixture a novel fracture test with modified loading modes loading fixtures and the control system of the conventional overlay tester is implemented by the asphalt material performance tester AMPT .In order to evaluate the validity of the proposed fracture test four different loading rates including 1 2 3 and 4 mm/min are examined in the AMPT. The results indicate that the fracture behavior is similar to creep at a low loading rate and does not show significant marginal tail extension at a high loading rate.It clearly shows the phase of crack initiation crack propagation and fracture at a loading rate of 3 mm/min. Besides eight fracture parameters such as fracture energy tensile strength and tensile modulus are applied to evaluate the fracture characteristics of asphalt mixture.Development of the overlay tester for the fracture test of asphalt mixture can be considered as a new fracture test of asphalt mixture. 展开更多
关键词 asphalt mixture fracture test overlay tester asphalt material performance tester (AMPT) fracture parame-ter
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Low Temperature Performance Prediction Model of Cold-Filled SMA-13 Asphalt Mixture
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作者 Zhaohui Sun Simeng Wang +1 位作者 Shang Ma Shuai Liu 《Materials Sciences and Applications》 2018年第13期1066-1072,共7页
Sets of cold-filled SMA-13 asphalt mixture were designed by means of orthogonal design method. The bending and low temperature creep tests of the cold-filled SMA-13 asphalt mixture were carried out. The related models... Sets of cold-filled SMA-13 asphalt mixture were designed by means of orthogonal design method. The bending and low temperature creep tests of the cold-filled SMA-13 asphalt mixture were carried out. The related models of the fractal dimension and the road performance evaluation index including low temperature bending failure strain εB and bending strength RB are established by using fractal theory. The model can be used to predict the low temperature performance of cold-filled SMA-13 asphalt mixture according to the design gradation, which can reduce the test workload and improve the working efficiency, so as to provide the reference for engineering design. 展开更多
关键词 Low Temperature performance Prediction Model Cold-Filled SMA-13 asphalt mixture FRACTAL DIMENSION Evaluation Index
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Fatigue Property of Basalt Fiber-Modified Asphalt Mixture under Complicated Environment 被引量:9
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作者 郑元勋 CAI Yingchun +1 位作者 ZHANG Guanghai FANG Hongyuan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第5期996-1004,共9页
The fatigue property of asphalt mixtures under complicated environment (low-temperature bending performance, chloride penetration, freezing-thawing cycle and their coupling effect) and the improvement effect for rel... The fatigue property of asphalt mixtures under complicated environment (low-temperature bending performance, chloride penetration, freezing-thawing cycle and their coupling effect) and the improvement effect for relevant property of basalt fiber-reinforcing asphalt mixture under complicated environment are studied. Two grading types of asphalt mixtures, AC-16I and AC-13I, are chosen, whose optimum asphalt-aggregate ratio and optimum dosage of basalt fiber are determined by the Marshall test. The standard specimens are made firstly, and then the low temperature bending tests of asphalt mixture and basalt fiber-reinforced asphalt mixture under the coupling effect of the chloride erosion and freezing-thawing cycle have been carried out. Finally, the fatigue property tests of asphalt mixture and basalt fiber-reinforced asphalt mixture under complex environment are performed on MTS material testing system. The results indicate that the tensile strength, the maximum curving tensile stress, the curving stiffness modulus, and fatigue properties of asphalt mixture are influenced by the coupling effect of the chloride erosion and freezing-thawing cycle. The low-temperature bending performance and fatigue property of asphalt mixtures under complicated environment can be greatly improved by adding moderate basalt fiber. The dense gradation asphalt mixture possesses stronger ability to resist adverse environmental effects under the same condition. 展开更多
关键词 asphalt mixture basalt fiber the chloride erosion freezing-thawing cycle the coupling effect low-temperature performance fatigue property
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Investigation of material composition,design,and performance of open-graded asphalt mixtures for semi-flexible pavement:A comprehensive experimental study
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作者 Mohammad Taghipoor Abolfazl Hassani Mohammad M.Karimi 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2024年第1期92-116,共25页
The primary goal of this study is the design and construction of semi-flexible pavement(SFP)mixture in accordance with the engineering and mechanical criteria.This study involves the use of a range of gradation curves... The primary goal of this study is the design and construction of semi-flexible pavement(SFP)mixture in accordance with the engineering and mechanical criteria.This study involves the use of a range of gradation curves,air void contents,cellulose and synthesized fibers,and neat and modified asphalt binders to prepare the open-graded asphalt(OGA)mixtures.To analyze the characteristics of these mixtures,a variety of test,namely binder drainage,semi-circular bending(SCB),Cantabro,wheel tracking,indirect tensile strength(ITS),and permeability tests were conducted.Additionally,to analyze the prepared grouting material,flexural strength,compressive strength,and fluidity tests were conducted.In the final stage,SFP was compared to HMA in terms of engineering characteristics and performance.According to the results,SFP was more resistant to skid,rutting,fire,and moisture damage,while HMA had a better performance in fracture tests,including SCB test.According to the results of the mechanical performance tests conducted on OGA mixtures,the highest and lowest values for air void content to achieve the highest mechanical performance level were 30%-35%and 25%,respectively.Also,based on the laboratory results,it was determined that the required void ratio for constructing OGA mixtures was 24%-26%based on the bitumen type and fibers amount in the mixture.Finally,SFP mixture can be regarded as a viable alternative to common pavements thanks to its high resistance to rutting and moisture damage,long freezing-thawing fatigue life,and adequate fire and skid resistance. 展开更多
关键词 Semi-flexible pavement mixture Open-graded asphalt mixture Engineering properties Cantabro test Hot mix asphalt
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Application and Research on Plant-Mixed Thermal Regeneration Technology of RAP Asphalt Mixtures 被引量:1
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作者 Junjie Yang 《Journal of Architectural Research and Development》 2020年第6期12-15,共4页
When the plant-mixed thermal regeneration technology is adopted for the waste asphalt pavement mixtures,its performance can basically reach the level of freshly-mixed asphalt concrete,which can be used for paving the ... When the plant-mixed thermal regeneration technology is adopted for the waste asphalt pavement mixtures,its performance can basically reach the level of freshly-mixed asphalt concrete,which can be used for paving the middle and lower layers of road pavements of various grades.Through the research and application of plant-mixed thermal regeneration technology based on China's Kunming-Yuxi Expressway Pavement Overhaul Project,this paper summarizes relevant technical points and effectively advocates the promotion and application of this technology in highway maintenance. 展开更多
关键词 Plant-mixed hot recycling asphalt mixture asphalt pavement
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A review on evaluation of crack resistance of asphalt mixture by semi-circular bending test 被引量:2
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作者 Yongjun Meng Weikang Kong +4 位作者 Chaoliang Gou Shenwen Deng Yirong Hu Jing Chen Liupeng Fan 《Journal of Road Engineering》 2023年第1期87-97,共11页
Although there are many kinds of fracture tests to choose from in evaluating the crack resistance of asphalt mixture,the semi-circular bending(SCB)test has attracted a lot of attention in the academic road engineering... Although there are many kinds of fracture tests to choose from in evaluating the crack resistance of asphalt mixture,the semi-circular bending(SCB)test has attracted a lot of attention in the academic road engineering community because of its simplicity,stability,and flexibility in testing and evaluation.The SCB test has become a common method to study the cracking resistance of asphalt mixture in recent years.This paper mainly summarizes the overview of the SCB test,summarizes some research results and common characterization parameters of the SCB test method in monotone test and fatigue test in recent years,and predicts and suggests the research direction of the SCB test in the future.It is found that the research on the monotonic SCB test is more comprehensive,and the research on the SCB fatigue test needs to be further improved in the aspects of loading mode,characterization parameter selection,and so on.Researchers can flexibly adjust the geometric dimensions and the test parameters of semi-cylindrical specimens,and conduct comprehensive analysis combined with the results of numerical simulation.The crack resistance of asphalt mixture can be comprehensively evaluated by fracture energy,fracture toughness,stiffness,flexibility index and other fracture indicators,combined with the crack propagation of the specimen.The analysis of numerical simulation can confirm the test results.In order to standardize the setting of fatigue parameters for future application,it is necessary to standardize the setting of bending performance. 展开更多
关键词 asphalt mixture Crack resistance Fatigue performance Semi-circular bending test
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Asbestos Tailings as Aggregates for Asphalt Mixture
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作者 刘小明 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2011年第2期336-339,共4页
To use many asbestos tailings collected in Ya-Lu highway,and to explore the feasibility of using asbestos tailings as aggregates in common asphalt mixtures,and properties of some asphalt mixtures were evaluated as wel... To use many asbestos tailings collected in Ya-Lu highway,and to explore the feasibility of using asbestos tailings as aggregates in common asphalt mixtures,and properties of some asphalt mixtures were evaluated as well.X-ray diffraction (XRD),X-ray fluorescent (XRF),and atomic absorption spectrophotometry (AAS) were employed to determine the solid waste content of copper,zinc,lead,and cadmium.Volume properties and pavement performances of AC-25 asphalt mixture with asbestos tailings were also evaluated compared with those with basalt as aggregates.XRD and XRF measurement results infer that asbestos tailing is an excellent road material.Volume properties of AC-25 asphalt mixture with asbestos tailings satisfied the related specifications.No heavy metals and toxic pollution were detected in AAS test and the value of pH test is 8.23,which is help to the adhesion with asphalt in the asphalt concrete.When compared with basalt,high temperature property and the resistance to low temperature cracking of AC-25 asphalt mixture was improved by using asbestos tailings as aggregates.In-service AC-25 asphalt pavement with asbestos tailings also presented excellent performance and British Pendulum Number (BPN) coefficient of surface. 展开更多
关键词 asbestos tailings AGGREGATE recycling and use asphalt mixture pavement performances
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Performance evaluation of new epoxy resin-based composite phase change materials and their asphalt mixture
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作者 Yuchao Gao Jiao Jin +4 位作者 Shuai Liu Yinfei Du Guoping Qian Jie Mao Yongqiang Zhu 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2024年第3期507-522,共16页
In recent years,the temperature-adjusted asphalt pavement has been an extensive concern by scholars in various countries,and this pavement can reduce temperaturerelated diseases.In this study,the shaped composite phas... In recent years,the temperature-adjusted asphalt pavement has been an extensive concern by scholars in various countries,and this pavement can reduce temperaturerelated diseases.In this study,the shaped composite phase change materials(CPCMs)were successfully synthesized by two processes,which are vacuum impregnation and epoxy curing.Firstly,the applicability of CPCMs in asphalt mixtures was evaluated by microscopic characterization,chemical compatibility,thermal properties,durability,and leakage stability.Secondly,CPCMs were applied to the asphalt mixture to evaluate its temperatureadjusted characteristics and pavement performance.Finally,the performance of the temperature-adjusted asphalt mixture was analyzed by integrating all factors.The research shows that the prepared CPCMs have excellent thermal properties and durability,the phase transition temperature is 48.93℃,and the phase transition enthalpy is 106.5 J/g,which fully meets the requirements for use in pavement.The temperature-adjusted asphalt mixture could alleviate the occurrence of extreme temperature,which was 4.9℃lower than the conventional mixture.The pavement performance of the temperatureadjusted asphalt mixture can meet the specified standards for humid areas.Considering the factors,the recommended amount of CPCMs is 1.5%.The research results provide a basis for the promotion of temperature-adjusted asphalt pavement and effectively support the development of pavement engineering technology. 展开更多
关键词 pavement engineering Temperature-adjusted asphalt mixture Phase change materials Thermal performance
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Mixing ratio design of emulsified asphalt cold recycled mixture based on gyratory compaction molding 被引量:6
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作者 WEI Hui BAI Xian-ping +2 位作者 WANG Fei-yue LI Wei JIN Jiao 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第3期759-767,共9页
In order to study the application of gyratory compaction molding method in emulsified asphalt cold recycled mixture and optimize the relevant technical parameters, the study was carried out according to splitting stre... In order to study the application of gyratory compaction molding method in emulsified asphalt cold recycled mixture and optimize the relevant technical parameters, the study was carried out according to splitting strength, stability and water stability test;the design of the experiment involved changing gyration number, emulsified asphalt and water content, molded specimen temperature and other factors to analyze the volume parameters, mechanical properties and water stability. The results show that both the maximum dry density and dry and wet splitting strength ratio(DWSSR) of emulsified asphalt cold reclaimed mixture are improved by the rotary compacting method, while the porosity and the optimal dosage of water are reduced. Furthermore, with the increase of compaction times, the porosity and splitting strength index both change exponentially. DWSSR and porosity are consistent with quadratic functions. The use of gyratory compaction for 70 times at 25 °C and the optimum dosage of emulsified asphalt can be determined based on the splitting strength ratio. The high-temperature stability and water damage resistance of the pavement can be improved by the use of rotary compacting method effectively, and the early strength and road performance are higher than the regulatory requirements. 展开更多
关键词 highway engineering emulsified asphalt mixture gyratory compaction proportion design splitting strength
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Effect of synthetic fibers on the mechanical performance of asphalt mixture:A review 被引量:5
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作者 Haichuan Jia Yanping Sheng +5 位作者 Ping Guo Shane Underwood Huaxin Chen Y.Richard Kim Yan Li Qingwei Ma 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2023年第3期331-348,共18页
Numerous studies showed that synthetic fibers are effective for reinforcing the mechanical performance of the asphalt mixture due to their high strength properties,ductility,and durability characteristics.In this pape... Numerous studies showed that synthetic fibers are effective for reinforcing the mechanical performance of the asphalt mixture due to their high strength properties,ductility,and durability characteristics.In this paper,the objective is to present a review of the reinforcement effect of synthetic fiber on the mechanical performance of the asphalt mixture.This paper reviews the relevant literature on the characterizations and applications of synthetic fibers to improve different mechanical properties of asphalt mixes,which can provide a reference for the applications and development of synthetic fibers in asphalt pavement.The characteristics of common synthetic fibers are introduced and the utilization of synthetic fibers in asphalt mixture is discussed.Different surface treatment methods for fiber are reviewed and it is found that surface treatment can improve the performance of the synthetic fibers in asphalt mixtures,especially the chemical surface treatment method.The influence of synthetic fiber addition on the mechanical properties of the asphalt concrete such as rutting resistance,tensile strength,water stability performance,and cracking resistance are then discussed.The research results show that aramid,glass,and polyester fibers improve the fatigue cracking resistance of asphalt mixture.Polyester fibers,polyamide fibers,and carbon fibers are used to improve resistance to the permanent deformation of asphalt pavement. 展开更多
关键词 Fiber reinforced asphalt mixture Synthetic fibers Fiber characteristics Mechanical performance
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