Suitability of Concrete Reinforced with Synthetic Fiber for the Construction of Pavements
Suitability of Concrete Reinforced with Synthetic Fiber for the Construction of Pavements
复制标题
合成纤维增强混凝土对路面施工的适用性
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
R. Mathur
中科院分区：
文献类型：
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作者：
Rakesh Kumar;Pankaj Goel;R. Mathur
混凝土收缩开裂是普通水泥混凝土路面的主要问题，特别是在热带地区。为了克服素混凝土的收缩开裂，有时建议在混凝土配合比中加入合成纤维。本文简要讨论了聚丙烯分散纤维和纤化纤维的加入对48 MPa抗压强度的路面级混凝土配合比28天性能的影响。在对照混凝土配合比的基础上，配制了纤维掺量分别为体积分数0.05%、0.10%和0.15%的6种混凝土配合比。本研究采用离散型和纤化型聚丙烯纤维。对混凝土的沉降、抗压强度、干缩、耐磨性等性能进行了评价。研究表明，纤维增强混凝土混合料在抗压强度无显著变化的情况下，沉降和干缩显著减少。此外，还观察到纤维增强混凝土混合料的耐磨性得到改善。
Shrinkage cracking of concrete is a major problem in plain cement concrete pavements especially in tropical regions. To overcome shrinkage cracking of plain concrete, sometimes the addition of synthetic fiber to the concrete mix is suggested. This paper briefly discusses the effects of addition of polypropylene discrete and fibrillated fibre on the properties of a paving grade concrete mix of 48 MPa compressive strength at 28-day. Six concrete mixes with fiber dosages 0.05%, 0.10% and 0.15% by volume fraction besides the control concrete mix were manufactured. Discrete and fibrillated polypropylene fiber was used in this study. The properties such as settlement, compressive strength, drying shrinkage, and abrasion resistance of the concrete were evaluated. The study suggested a significant reduction in settlement and drying shrinkage without significant change in compressive strength for the concrete mixes reinforced with fiber. Further, an improved abrasion resistance for the concrete mixes reinforced with fiber was also observed.