Synthesis and characterisation of magnesium silicate hydrate gels
Synthesis and characterisation of magnesium silicate hydrate gels
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DOI：
10.1016/j.cemconres.2004.06.022
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发表时间：
2005-01-01
影响因子：
11.4
通讯作者：
Glasser, FP
中科院分区：
文献类型：
--
作者：
Brew, DRM;Glasser, FP
采用沉淀法制备了水化硅酸镁凝胶（M-S-H）。凝胶组成的范围在Mg/Si摩尔比0.67-1.0之间。使凝胶经受在约22 ℃下约24小时的短固化和在85 ℃下180天的更长固化，之后通过XRD、FT-IR和固态Si-29 NMR表征它们。在较长的时间和较高的温度下老化在一定程度上改善了局部有序性。部分有序结构的性质与M-S-H矿物相的性质有关。M-S-H凝胶的结构和组成与C-S-H凝胶不同，部分原因是C-S-H凝胶中含镁很少，而混合水泥中的M-S-H凝胶与C-S-H共存，但含钙很少。(C)2004爱思唯尔有限公司保留所有权利。
Magnesium silicate hydrate gels (M-S-H) have been prepared by precipitation. The range of gel compositions lie between Mg/Si molar ratios 0.67-1.0. The gels were subject to short cure, approximately 24 h at approximately 22 degreesC and longer cure, 180 days at 85 degreesC, following which they were characterised by XRD, FT-IR and solid-state Si-29 NMR. Ageing at longer times and higher temperatures somewhat improves the local ordering. The nature of the partially ordered structures is related to those of M-S-H mineral phases. The structures and compositions of M-S-H gels differ from those of C-S-H gels and partly on that account, C-S-H gels contain little magnesium while M-S-H gels in blended cements coexist with C-S-H but contain little calcium. (C) 2004 Elsevier Ltd. All rights reserved.