【摘 要】
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This paper investigated the influence of water-retention and thickening admixture (RTA) on consistency of fresh mortar by using low-field NMR, and the micro
【机 构】
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Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Sh
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
This paper investigated the influence of water-retention and thickening admixture (RTA) on consistency of fresh mortar by using low-field NMR, and the microstructure of bentonite, diatomite and sepiolite were analyzed by SEM.Results showed that T2 distributions of fresh mortar were bimodal, and T2 distribution (long component) gradually moved to the left with increasing content of RTA.RTA can effectively increase the consistency of mortar.The thickening effect of bentonite on mortar is higher than the diatomite and sepiolite used in the mortar,and compared with sepiolite, diatomite exhibits a greater thickening effect on mortar.Furthermore, it was found that T2 of long component and consistency testing results were linearly correlated.
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