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| 抛填骨料工艺超高强混凝土的制备研究 | |
| 引用本文： | 马洪坤,谭昱,沈卫国,陈莉莉,肖永明,张丽.抛填骨料工艺超高强混凝土的制备研究[J].武汉理工大学学报,2012,34(1):24-28. |
| 作者姓名： | 马洪坤 谭昱 沈卫国 陈莉莉 肖永明 张丽 |
| 作者单位： | 1. 武汉理工大学材料科学与工程学院,武汉,430070 2. 武汉理工大学硅酸盐建筑材料国家重点实验室,武汉,430070 3. 武汉理工大学材料科学与工程学院,武汉430070;武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 4. 襄阳市公路管理局,襄阳,441003 |
| 摘 要： | 采用抛填骨料工艺制备强度超过100MPa的超高强混凝土。研究表明,采用分层均布的布料方式,可在不影响施工工作性的条件下制得粗骨料体积分数高达54%、骨料相互嵌锁的超高强混凝土,其力学性能、抗氯离子渗透能力均优于常规方法制得的超高强混凝土,更佳的颗粒级配分布(PSD)有利于其密实度的增加。采用贝雷参数检验法评估集料级配,表明级配更为合理。抛填骨料工艺超高强混凝土中胶凝材料的用量大幅度降低,对降低混凝土环境影响具有重要意义。 |
| 关 键 词： | 抛填骨料工艺 超高强 力学性能 颗粒分布(PSD) 贝雷法 |
Preparation and Investigation of Ultra-high Strength Scattering-filling Aggregate Concrete |
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| MA Hong-kun , TAN Yu , SHEN Wei-guo , CHEN Li-li , XIAO Yong-ming , ZHANG Li.Preparation and Investigation of Ultra-high Strength Scattering-filling Aggregate Concrete[J].Journal of Wuhan University of Technology,2012,34(1):24-28. | |
| Authors: | MA Hong-kun TAN Yu SHEN Wei-guo CHEN Li-li XIAO Yong-ming ZHANG Li |
| Affiliation: | 1.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China; 2.State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology, Wuhan 430070,China;3.Xiangyang Highway Administration Bureau,Xiangyang 441003,China) |
| Abstract: | A new type of concrete with a compressive strength more than 100 MPa has been prepared by scattering-filling aggregate method.The results indicated that the coarse aggregate volume fraction of ultra-high strength coarse aggregate interlock concrete up to 54%,without affecting the workability of concrete.The ultra-high strength concrete prepared with this method is better than common method in terms of properties of mechanical,anti-chloride ion permeability coefficient.By this process,the compactedness of concrete was increased,because it has better particle size distribution(PSD).Assessed by Bailey method indicated that the particle size is more reasonable.Ultra-high strength scattering-filling aggregate concrete reduces the use of cementitious material,so it has vital significance to reduce the environmental impact. |
| Keywords: | scattering-filling aggregate process ultra-high strength mechanical properties particle size distributions Bailey method |
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