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煤矸石集料路面基层材料应用研究 被引量:10
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作者 闫广宇 周明凯 +3 位作者 陈潇 于刚 刘补良 康壮 《武汉理工大学学报(交通科学与工程版)》 2021年第3期568-573,共6页
煤矸石成分复杂,用于路面基层中存在压碎值偏高、施工易压碎、基层混合料强度偏低等问题.文中采用选择性破碎分选工艺制备煤矸石集料,研究了配合比、稳定类型对煤矸石集料路面基层材料的抗击碎性能、力学性能的影响规律.试验表明:选择... 煤矸石成分复杂,用于路面基层中存在压碎值偏高、施工易压碎、基层混合料强度偏低等问题.文中采用选择性破碎分选工艺制备煤矸石集料,研究了配合比、稳定类型对煤矸石集料路面基层材料的抗击碎性能、力学性能的影响规律.试验表明:选择性破碎分选工艺能显著降低煤矸石集料压碎值及热值指标,制备出高品质的煤矸石集料.虽然与天然碎石相比,煤矸石集料制备的路面基层材料强度偏低,不过10%粉煤灰掺入后,在基层混合料中起到了缓冲作用,使得煤矸石基层混合料击实后的级配变化率降低41.8%,显著改善煤矸石集料路面基层材料的抗击碎性;同时,7 d无侧限抗压强度提高30.9%,达3.52 MPa,28 d抗劈裂性能提高64.3%,达0.46 MPa,90 d抗压回弹模量提高11%,达1383 MPa,显著提高煤矸石集料路面基层材料的力学性能. 展开更多
关键词 煤矸石 选择性破碎分选 压碎值 工程集料 水泥粉煤灰稳定
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砂当量试验仪校准结果不确定度评定 被引量:3
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作者 朱立无 朱岩 《计量与测试技术》 2019年第5期107-110,共4页
由安庆市计量测试所首次制定的《砂当量试验仪校准规范》已顺利通过安徽省质量技术监督局验收。该校准规范选用的计量标准器及校准方法科学、合理,具有很强的操作性。在校准规范编制过程中,参考了JJF1059.1-2012《测量不确定度评定与表... 由安庆市计量测试所首次制定的《砂当量试验仪校准规范》已顺利通过安徽省质量技术监督局验收。该校准规范选用的计量标准器及校准方法科学、合理,具有很强的操作性。在校准规范编制过程中,参考了JJF1059.1-2012《测量不确定度评定与表示》、JTGE42-2005《公路工程集料试验规程》、JTGB01-2014《公路工程技术标准》,对砂当量试验仪试筒刻度线、配重活塞质量、配重活塞底座直径、振荡器振荡频次、振荡器振荡时间校准结果进行评定,通过多次校准试验,验证其评定方法科学、合理,对砂当量试验仪校准有很强的指导意义。 展开更多
关键词 砂当量试验仪 公路工程集料 测量不确定度
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Research of the Application of Nanometer Materials in Sports Engineering and the Biological Safety 被引量:1
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作者 Lianbo Yang 《International English Education Research》 2014年第7期115-117,共3页
In the modern material engineering, the use of nanometer materials has entered the highly and intensively utilized stage, so new nanometer materials have been continuously found to replace the traditional ordinary mat... In the modern material engineering, the use of nanometer materials has entered the highly and intensively utilized stage, so new nanometer materials have been continuously found to replace the traditional ordinary materials. The so-called nanometer materials have the size within l - 100nm in thickness, which originates from the 1980s. At that time, nanometer materials didn't have a proper development due to the economic level. t towever, with the support of science and technology, this technology has undergone tremendous changes in the related fields. There have been increasing expansion in the kinds and the width in use of the nanometer materials, so have the research of nanometer materials. In this paper, we will briefly analyze the application ofnanometer materials in the sports engineering. 展开更多
关键词 nanometer materials Sports engineering Biological safety
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Stainless Steel Composite Integrated in Modern Facade Engineering
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作者 Marc Tulke Jennifer Watzke +3 位作者 Michael Schomacker Alexander Brosius Janine Bach Helmut Hachul 《Journal of Mechanics Engineering and Automation》 2015年第8期427-434,共8页
This paper shows the results of characterising a stainless steel composite material for applications in facade engineering. A number of possible shapes generated with pneumatic stretch forming are presented as a resul... This paper shows the results of characterising a stainless steel composite material for applications in facade engineering. A number of possible shapes generated with pneumatic stretch forming are presented as a result of simulation studies. In this context a model of a possible facade combined from different shapes is created to show the optical effect of the simulated shapes. Additionally, the manufacturing of a device for pneumatic stretch forming is discussed and first results of transforming the stainless steel composite material with pneumatic stretch forming are shown. 展开更多
关键词 COMPOSITE design FACADES LIGHTWEIGHT pneumatic forming
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