Experimental Study on Bendable Concrete
Experimental Study on Bendable Concrete
复制标题
可弯曲混凝土试验研究
DOI：
10.17577/ijertv5is100400
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Suresh
中科院分区：
文献类型：
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作者：
K. Madhavi;M. Venugopal;V. Rajesh;K. Suresh
工程水泥复合材料(ECC)又称可弯曲混凝土，是一种易于成型的砂浆基复合材料，它由经过特殊挑选的随机短纤维增强而成。传统混凝土在地震或常规过度使用中受到应变时，会遭受灾难性的破坏。ECC保持完好，在拉伸应变高达5%的情况下使用是安全的。传统混凝土会断裂，在0.01%的拉伸应变下可能无法承载。为了满足未来对混凝土的需求，发展纤维材料，本文采用了聚乙烯醇纤维，以减少水泥用量，提高柔韧性。它具有高纵横比、高极限抗拉强度、较高的弹性模量、与硅酸盐水泥良好的化学兼容性、良好的亲水性和无健康风险。为了提高混凝土的和易性，掺入了高效减水剂。测定了两种不同厚度的立方体和板的抗压强度和抗折强度，并在抗折强度过程中校核了混凝土的抗弯性能。
Engineered cementitious composites (ECC) also called as Bendable concrete is an easily moulded mortar based composite reinforced with specially selected short random fibres. Traditional concrete suffers catastrophic failure when strained in an earthquake or by routine overuse. ECC remains intact and safe to use at tensile strains up to 5%. Traditional concrete fractures and may not carry a load at 0.01 % tensile strain. In this paper, to overcome the demand for concrete in future and to develop the fibre materials, the Poly Vinyl Alcohol Fibre is used so as to reduce the cement content and to enhance flexibility. It has high aspect ratio, high ultimate tensile strength, relatively high modulus of elasticity, good chemical compatibility with Portland cement, good affinity with water and no health risks. To increase the workability of concrete super plasticizer is used. The compressive strength and flexural strength of cubes and slabs (two different thicknesses) is determined and also the bendability characteristics of the concrete are checked during flexural strength