Does the Al substitution in C-S-H(I) change its mechanical property?
Does the Al substitution in C-S-H(I) change its mechanical property?
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DOI：
10.1016/j.cemconres.2010.09.010
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发表时间：
2011
影响因子：
11.4
通讯作者：
J. Oh;S. Clark;S. Clark;P. Monteiro
中科院分区：
文献类型：
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作者：
J. Oh;S. Clark;S. Clark;P. Monteiro
本研究通过对两种C-S-H（I）样品进行高压同步辐射X射线衍射实验，考察Al取代Si对水合硅酸钙I [C-S-H（I）]（C-S-H的结构类似物）体积模量的影响：一种是碱激发矿渣的水化产物，另一种是合成的C-S-H（I）。测试结果表明，无论Al取代与否，两种C-S-H（I）样品的体积模量和晶格常数a、B、c的不可压缩性都非常相似。这一结果可能是由于取代的Al的四配位构型，这使得dreierketten硅酸盐链在取代后保持相同的排列。
This study examines the influence of Al substitution for Si on the bulk modulus of calcium silicate hydrate I [C–S–H(I)], a structural analogue of C–S–H, by performing high-pressure synchrotron X-ray diffraction experiments in two C–S–H(I) samples: one a hydration product of alkali-activated slag and the other a synthetic C–S–H(I). The test result shows that not only the bulk modulus but also the incompressibility of the lattice parameters a, b, and c of two C–S–H(I) samples are very similar to each other, regardless of the Al substitution. This result may be due to the four-coordinated configuration of the substituted Al, which makes the dreierketten silicate chains maintain the same arrangement after the substitution.