Effect of coarse cement particles on the self-healing of dense concretes

Rahmani Hamid; Bazrgar Hamed

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Effect of coarse cement particles on the self-healing of dense concretes

机译：水泥粗颗粒对致密混凝土自我修复的影响

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The self-healing ability of dense concretes was investigated by adding coarse cement particles to the mixtures as a self-healing agent. Longitudinal cracks were created in cylindrical samples after 28 d of curing using the split test method. The cylindrical specimens were then fastened using metal rings in such a manner that the crack width was set to 200 mu m and the specimens were cured in water for the second stage. The secondary tensile strength and water passing through the cracked specimens were then investigated. In addition, the hydration degree was measured as an explanation of self-healing rates. The results show that the use of coarse cement particles recovers tensile strength by up to 38% and also decreases the water passing rate by up to 100%.

机译：通过向混合物中加入粗水泥颗粒作为自愈剂，研究了致密混凝土的自愈能力。使用分裂测试方法在固化28天后，在圆柱状样品中产生了纵向裂纹。然后使用金属环固定圆柱状样品，以使裂纹宽度设置为200μm，并将样品在水中固化以进行第二阶段。然后研究了二次抗张强度和通过裂纹试样的水。另外，测量水合度作为自我修复率的解释。结果表明，使用粗水泥颗粒可将拉伸强度提高38％，并将水通过率降低100％。

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来源
《Magazine of Concrete Research》 |2015年第10期|476-486|共11页
作者
Rahmani Hamid; Bazrgar Hamed;
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作者单位

Univ Yasuj, Dept Civil Engn, Coll Engn, Yasuj, Iran;

Univ Yasuj, Dept Civil Engn, Coll Engn, Yasuj, Iran;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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Effect of coarse cement particles on the self-healing of dense concretes

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