Effect of Wet-Dry Condition on Self-Healing Property of Early-Age ECC
Effect of Wet-Dry Condition on Self-Healing Property of Early-Age ECC
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发表时间：
2010
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通讯作者：
A. Yamamoto;Ken Watanabe;V. Li;J. Niwa
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作者：
A. Yamamoto;Ken Watanabe;V. Li;J. Niwa
本文介绍了早期工程水泥基复合材料(ECC)自愈合行为的研究结果。对拉伸应变为0.3%或0.5%的单轴预加载ECC进行不同次数的干湿循环。然后，进行了谐振频率测试和重载测试，以评估恢复率与干湿循环次数的关系。这两个试验表明了不同的恢复率，并揭示了湿干循环次数、裂缝宽度和分散度是获得力学特性恢复的关键。
This paper describes the results of self-healing behavior in early-age Engineered Cementitious Composites (ECC). Uniaxially pre-loaded ECC with tensile strain of 0.3 or 0.5% were subjected to different number of wet-dry cycles. Then, resonant frequency test and reloading test were carried out to assess the recovery rate as a function of the number of wet-dry cycles. These two tests indicated different recovery rates and it was revealed that the number of wet-dry cycles, crack width and dispersion were crucial to attain recovery in mechanical characteristics.