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材料导报  2020, Vol. 34 Issue (Z1): 189-192    
  无机非金属及其复合材料 |
纤维素等若干因素对仿钢纤维增强透水混凝土性能的影响
姜宽, 戚承志, 崔英洁, 李太行, 卢真辉
北京建筑大学,北京未来城市设计高精尖中心,2011 节能减排协同创新中心,北京 100044
Effects of Several Factors Such as Cellulose on the Properties of PolyethyleneFiber Reinforced Pervious Concrete
JIANG Kuan, QI Chengzhi, CUI Yingjie, LI Taihang, LU Zhenhui
2011 Energy Conservation and Emission reduction Collaborative Innovation Center, Beijing Future Urban Design High-Tech Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
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摘要 节能减排协同创新中心,北京 100044本实验研究了不同仿钢纤维掺量(0%、0.2%、0.4%、0.6%)对透水混凝土抗压强度和透水系数的影响,并分析了骨料粒径、细骨料、纤维素等因素对仿钢纤维增强透水混凝土抗压强度和透水性能的影响。研究表明:仿钢纤维能够在一定程度上提高透水混凝土的早期强度;随仿钢纤维掺量的增加,透水混凝土28 d的抗压强度呈先上升后下降趋势,即存在最优掺量;当仿钢纤维掺量增加时,透水混凝土的透水能力先下降后上升;透水混凝土的抗压强度随骨料粒径的增大而降低,透水系数随骨料粒径的增大而明显增大;细骨料会使透水混凝土的早期抗压强度降低,但会提高透水混凝土28 d的抗压强度;随着细骨料取代量的增加,透水混凝土的透水系数先增大后减小;透水混凝土的抗压强度随纤维素掺量的增加而降低,透水系数随纤维素掺量的增加而增大。本研究可为实际透水混凝土施工过程中外掺料的选择提供参考。
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姜宽
戚承志
崔英洁
李太行
卢真辉
关键词:  透水混凝土  仿钢纤维  抗压强度  透水系数  骨料粒径  细骨料  纤维素    
Abstract: In this experiment, the effects of different steel fiber content (0%, 0.2%, 0.4%, 0.6%) on the compressive strength and permeability coefficient of pervious concrete were studied. Furthermore, the influence of aggregate size, fine aggregate and cellulose on the compressive strength and permeability coefficient of polyethylene fiber reinforced pervious concrete were researched. The results show that the polyethylene fiber can partly improve the early compressive strength of pervious concrete. With the increase of the content of the polyethylene fiber, the compressive strength of pervious concrete in 28 d increases first and then decreases, that is to say, there is an optimal content. The permeability of pervious concrete decreases first and then increases with the increase of the content of polyethylene fiber. The compressive strength of pervious concrete decreases with the increase of aggregate size, and the permeability coefficient increases significantly with the increase of aggregate size. Fine aggregate will reduce the 7 d compressive strength of pervious concrete, but will increase the 28 d compressive strength. With the increase of fine aggregate, the permeability coefficient of pervious concrete increases first and then decreases. The compressive strength of pervious concrete decreases with the increase of cellulose content, and the permeability coefficient increases with the increase of cellulose content. The research can provide a reference for the selection of admixtures in the practical construction process of pervious concrete.
Key words:  pervious concrete    polyethylene fiber    compressive strength    permeability coefficient    aggregate size    fine aggregate    cellulose
                    发布日期:  2020-07-01
ZTFLH:  TU502  
基金资助: 国家重点基础研究发展计划(2015CB057805)
作者简介:  姜宽,北京建筑大学硕士研究生,主要从事混凝土材料和岩石动力学方面的学习和研究;戚承志,北京建筑大学教授,博士研究生导师,“长江学者”特聘教授。主要从事岩石力学、防灾减灾工程等方面研究,负责完成国家级科研项目10余项。
引用本文:    
姜宽, 戚承志, 崔英洁, 李太行, 卢真辉. 纤维素等若干因素对仿钢纤维增强透水混凝土性能的影响[J]. 材料导报, 2020, 34(Z1): 189-192.
JIANG Kuan, QI Chengzhi, CUI Yingjie, LI Taihang, LU Zhenhui. Effects of Several Factors Such as Cellulose on the Properties of PolyethyleneFiber Reinforced Pervious Concrete. Materials Reports, 2020, 34(Z1): 189-192.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2020/V34/IZ1/189
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