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Formulation Design of the Multi-component Cement Additive by Using Engineering Statistics 被引量:1
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作者 黄弘 沈晓冬 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第3期538-544,共7页
A novel methodology for the formulation design of the multi-component cement additive for the low early strength blend cement was presented by using engineering statistics.Components of cement additive such as trietha... A novel methodology for the formulation design of the multi-component cement additive for the low early strength blend cement was presented by using engineering statistics.Components of cement additive such as triethanolamine,chloride,saccharide and a kind of divalent alcohol were simultaneously tested according to the arrangement of response surface methodology.Mathematical models were established to express the quantitative relationship between the chemical components of cement additive and the compressive strength of treated blend cement.The effectiveness and the possible interactions of these four chemicals contributing to the strength development of blend cement were further explored by the pareto chart and the contour plot.Finally according the performance analysis of four chemicals,the optimized formulations were brought forward and were validated in practical trials by Turkey's multiple comparison. 展开更多
关键词 cement additive blend cement EFFECTIVENESS INTERACTION engineering statistics
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Effect of Progressive Substitution of Cement and Lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area
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作者 SUN Yang WANG Faxin +2 位作者 SU Yaying LI Yiwei HE Feng 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2025年第1期88-102,共15页
This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in Lianyungang city of China.Past research in this area was... This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in Lianyungang city of China.Past research in this area was limited.Therefore,a curing agent made from powdered shells was used to solidify the dredged soil in situ.We employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing agent.Data was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different purposes.The development of strength in solidified soil was studied in both seawater and pure water conditions.The study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with cement.Higher cement content had a positive effect on strength.For high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:0.6.Seawater,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and precipitation.These findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified soil.The recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon emissions.The role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain applications.In conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective manner.The recommended ratios for different strength requirements offer valuable insights for practical applications in the field of soil treatment,contributing to sustainable and efficient solutions for soil management. 展开更多
关键词 carbon reduction and solidification dredged soil abandoned shells orthogonal test chemical additives(lime and cement) unconfined compressive strength(UCS)
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