| 预置集料高强高性能混凝土的实验研究 |
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| 引用本文： | 沈卫国,崔啸宇,李家胜,孟宪利,熊春兵,杨杉.预置集料高强高性能混凝土的实验研究[J].武汉理工大学学报,2011(10). |
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| 作者姓名： | 沈卫国 崔啸宇 李家胜 孟宪利 熊春兵 杨杉 |
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| 作者单位： | 武汉理工大学材料科学与工程学院;襄阳市交通局;襄阳汇通路桥有限公司; |
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| 基金项目： | 湖北省公路局科技项目(2009-610) |
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| 摘 要： | 预填集料混凝土是先把粗骨料填在模板中,然后注入水泥砂浆(水泥、砂和水,通常有外加剂)来填满集料之间的空隙而成的混凝土。采用此法制备的混凝土粗集料之间相互嵌锁,能充分发挥粗骨料的强度骨架作用。研究表明,在优化灰砂比基础上采用不同矿物掺合料(粉煤灰、硅灰和矿渣粉)制备出预置集料混凝土,其强度可达到C50混凝土的要求,弹性模量高于同等级混凝土,抗氯离子渗透性和抗冲击性也优于普通C50,该混凝土胶凝材料用量少,在提高其服役性能的同时节约了成本。
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| 关 键 词： | 预置集料方法 粗集料嵌锁混凝土 粗集料 体积分数 服役性能 |
Experimental Investigation on the High Strength and High Performance Preplaced Aggregate Concrete |
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| SHEN Wei-guo,CUI Xiao-yu,LI Jia-sheng,MENG Xian-li,XIONG Chun-bing,YANG Shan.Experimental Investigation on the High Strength and High Performance Preplaced Aggregate Concrete[J].Journal of Wuhan University of Technology,2011(10). |
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| Authors: | SHEN Wei-guo CUI Xiao-yu LI Jia-sheng MENG Xian-li XIONG Chun-bing YANG Shan |
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| Affiliation: | SHEN Wei-guo1,CUI Xiao-yu1,LI Jia-sheng1,MENG Xian-li2,XIONG Chun-bing3,YANG Shan1(1.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China,2.Xiangyang Transportation Bureau,Xiangyang 441003,3.Xiangyang Huitong Highway Bridge Ltd,China) |
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| Abstract: | Preplaced aggregate concrete is produced by placing stone aggregate in a form and later injecting grout(cement,sand,and water,usually with admixtures) to fill the voids between coarse aggregate particles.A type of coarse aggregate interlocking concrete was prepared by this method,the role of aggregates strength framework is fully displayed.Experimental results indicate that the strength of preplaced aggregate concrete with an optimum cement-sand ratio with different mineral admixtures(fly ash,silica fume an... |
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| Keywords: | preplaced aggregate method coarse aggregate interlocking concrete coarse aggregate volume fraction serving performance |
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