高吸水性高分子
粉煤灰
波特兰岩
胶凝的
微观结构
灰浆
吸水率
材料科学
火山灰
抗压强度
复合材料
火山灰反应
聚合物
水泥
硅酸盐水泥
作者
Agnieszka J. Klemm,Karol Sikora
标识
DOI:10.1016/j.conbuildmat.2013.07.039
摘要
The paper is focused on microstructure and strength development in fly ash cementitious mortars containing superabsorbent polymers. In order to evaluate the effect of different water absorption/desorption kinetics of SAPs, comprehensive MIP and SEM analysis supplemented by the mechanical properties assessments have been performed. The vast majority of pores created by SAP are ‘ink-bottle’ and/or closed. Gradual release of water stored by SAP facilitates formation of denser, more homogenous and predictable cementitious matrix, further enhanced by the pozzolanic reaction of fly ash with portlandite. Addition of SAP with high water absorption capacity results in an increased compressive strength.
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