Chemical Composition of C‐S‐H Gel Formed in the Hydration of Calcium Silicate Pastes
Chemical Composition of C‐S‐H Gel Formed in the Hydration of Calcium Silicate Pastes
复制标题
硅酸钙浆料水合形成的C-S-H凝胶的化学组成
DOI：
10.1111/j.1151-2916.1979.tb19033.x
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发表时间：
1979
影响因子：
3.9
通讯作者：
R. L. Berger
中科院分区：
文献类型：
--
作者：
A. Bentur;R. L. Berger
用定量X射线衍射仪、萃取法和热废气分析法研究了4℃、25℃和65℃养护的C3S浆体水化形成的C-S-H以及25℃养护的C2S和C3S/C2S共混物的化学组成和物理组成。萃取法测定的CH量大于或等于QXDA法测定的CH量。两种结果的差异随糊的H2O比表面积增大而增大，表明吸附的CH以钙离子和(OH)−离子的形式存在，这是QXDA无法测量的，并表明萃取法是估算C-S-H组成的较好方法。
The chemical and physical compositions of C-S-H formed in paste hydration of C3S cured at 4°, 25°, and 65°C and of C2S and a C3S/C2S blend cured at 25°C were studied using quantitative X-ray diffraction analysis (QXDA), extraction, and thermal effluent gas analysis (TEGA) to determine the free CH content. The amount of CH determined by extraction is greater than or equal to that determined by QXDA. The difference between the two results increased with the H2O surface area of the paste, indicating the existence of adsorbed CH in the form of Ca2+ and (OH)− ions which cannot be measured by QXDA and suggesting that the extraction method is better for estimating the composition of C-S-H.