Relation between Chemical Composition and Physical Properties of C-S-H Generated from Cementitious Materials
Relation between Chemical Composition and Physical Properties of C-S-H Generated from Cementitious Materials
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DOI：
10.3151/jact.13.275
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发表时间：
2015-05
影响因子：
2
通讯作者：
Y. Suda;T. Saeki;Tsuyoshi Saito
中科院分区：
文献类型：
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作者：
Y. Suda;T. Saeki;Tsuyoshi Saito
首次合成了硅酸钙/氨基苯甲酸(C-S-H/ABA)复合体系，并对其进行了表征。每种3或4-氨基苯甲酸的浓度为0.01mol。每摩尔。在C-S-H制剂的水化过程中加入钙。三周后对C-S-H/ABA体系进行过滤和干燥。用X射线衍射仪、傅里叶变换红外光谱和氮气吸附分析对其进行了表征。用C-S-H/ABA压实粉末制备了多孔体，用于不同测试溶液中的长度变化和质量变化的测量。此外，还用微压痕技术测定了压实样品的蠕变弹性系数和硬度。结果表明，与纯C-S-H标准物质相比，C-S-H/ABA体系具有更好的耐久性能和力学性能。3-氨基苯甲酸和4-氨基苯甲酸对耐久性因子的影响相似。而C-S-H/3-ABA具有较好的力学性能。
Calcium-silicate-hydrate/aminobenzoic acid (C-S-H/ABA) composite systems were synthetized and characterized for the first time. Each of 3or 4-aminobenzoic acid with a concentration of 0.01 mol. per mol. of Ca was added to the C-S-H preparations during their hydration. The C-S-H/ABA systems were filtered and dried after three weeks. These were, then, characterized by X-ray diffraction, Fourier transform infrared spectroscopy and nitrogen adsorption analysis. Porous bodies were also prepared from C-S-H/ABA compacted powders and used for the length-change and mass-change measurements in different test solutions. In addition, the microindentation technique was used to determine the creep modulus and hardness of the compacted samples. It is suggested that the C-S-H/ABA systems had improved durability and enhanced mechanical properties compared to the phase pure C-S-H reference materials. The influence of the 3and 4-aminobenzoic acid on durability factors was similar. The C-S-H/3-ABA, however, had superior mechanical performance.