Self-healing performance of engineered cementitious composites under natural environmental exposure
Self-healing performance of engineered cementitious composites under natural environmental exposure
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DOI：
10.1680/jadcr.15.00022
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发表时间：
2016-01-01
影响因子：
2
通讯作者：
Chrisp, Thomas Malcolm
中科院分区：
文献类型：
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作者：
Suryanto, Benny;Wilson, Sam Alan;Chrisp, Thomas Malcolm
介绍了暴露在自然环境中的工程水泥基复合材料（ECC）的自修复性能。15个狗骨形ECC样品固化14天后进行预加载，然后放置在赫瑞瓦特大学（爱丁堡校区）的开放区域。超声波脉冲速度测量用于确定ECC在自然环境中的自愈能力的速率和程度。结果表明，虽然更高度损坏的样品显示出最大的超声波速度的下降，他们也显示出初始加速愈合，这意味着在更多的损坏的样品，而不是增加单个裂纹宽度的单个裂纹的数量增加。还发现ECC中的微裂纹的自愈合是稳健的。窄发纹裂纹（
The self-healing performance of an engineered cementitious composite (ECC) exposed to the natural environment is presented. Fifteen dog-bone shaped ECC samples were preloaded after 14 d of curing and then placed outside in an open area at Heriot-Watt University (Edinburgh campus). Ultrasonic pulse velocity measurements were used to determine the rate and extent of the self-healing capabilities of the ECC in the natural environment. The results showed that, while the more highly damaged samples displayed the greatest decrease in ultrasonic velocity, they also displayed initial accelerated healing, which implies an increased quantity of individual cracks in the more damaged samples rather than an increase in individual crack widths. It was also found that the self-healing of microcracks in the ECC was robust. Narrow hairline cracks (