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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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水化硅酸钙凝胶的弹塑性和徐变特性
Keywords: 无机非金属材料,弹塑性,纳米压痕,水化硅酸钙凝胶,徐变
Abstract:
？采用纳米压痕技术研究了不同龄期水泥硬化浆体中水化硅酸钙(c--s--h)凝胶的微观弹塑性和徐变特性。结果表明,随着龄期的增长,c--s--h凝胶在相同荷载作用下的弹性能逐渐减小,并趋于稳定值,且低密度c--s--h凝胶的弹性能均高于同龄期的高密度c--s--h凝胶。对于相同的荷载和持荷时间,高密度c--s--h凝胶的徐变显著低于同龄期低密度c--s--h凝胶。应用纳米压痕技术从微观层面测定了两种密度c--s--h凝胶的变形性能的差异,揭示了c--s--h凝胶的弹性能和徐变与凝胶的折合弹性模量呈反比关系。
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