Does the Al substitution in C–S–H(I) change its mechanical property?
KAUST Grant NumberKUS-l1-004021
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AbstractThis 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. © 2010 Elsevier Ltd.
CitationOh JE, Clark SM, Monteiro PJM (2011) Does the Al substitution in C–S–H(I) change its mechanical property? Cement and Concrete Research 41: 102–106. Available: http://dx.doi.org/10.1016/j.cemconres.2010.09.010.
SponsorsThis publication was based on work supported in part by Award No. KUS-l1-004021, made by King Abdullah University of Science and Technology (KAUST). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
JournalCement and Concrete Research