PVA纤维对再生粗集料透水混凝土性能的影响研究.doc

文档介绍：
PVA 纤维对再生粗集料透水混凝土性能的
影响研究#
满都拉*
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(内蒙古大学交通学院,呼和浩特 010070)
摘要:透水混凝土是具有拱架结构的多孔混凝土。本试验采用高质化处理过的再生粗集料质
量替换普通粗集料 30%,再添加(水泥质量的 %、%、%、%)PVA 纤维,进行
了 PVA 纤维对多孔混凝土强度、有效孔隙率、透水系数的影响分析,并讨论了多孔混凝土
的干温缩特性,为再生粗集料多孔混凝土的设计与应用提供了依据。
关键词:道路与铁道工程;PVA 纤维;再生粗集料;透水混凝土;空隙率;渗透系数
中图分类号:
Study on Affection of the PVA Fiber on Recycled Coarse
Aggregate to Porous Concrete Performance
Mandula
(Transportation Institute, Inner Mongolia University, Hohhot 010070)
Abstract: Pervious concrete is one kind of porous concrete which has skeleton structure. In this
test the recycled coarse aggregate replacement ratio is 30%, by using recycled coarse aggregate
which through high quality processing replaces ordinary coarse aggregate and adding PVA fiber
(the mass of PVA fiber is 0%, %, % and % of the cement, respectively), the influence of
PVA fiber on the strength, effective porosity and permeable coefficient of porous concrete are
studied. Besides, the dry shrinkage property and temperature contraction property of porous
concrete are discussed. The results can provide the basis for the design and application of the
recycled coarse aggregate porous concrete.
Key words: Highway and Railway Engineering;PVA Fiber;Recycled Coarse Aggregate; Pervious
Concrete;Void Ratio;ration Coefficient
0 引言
透水混凝土又称多孔混凝土,是一种人为引入大量连续孔道的具有特殊功能的混凝土,
其物理指标基本