Does the Al substitution in C-S-H(I) change its mechanical property?

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2010.09.010· OSTI ID:21490049

Oh, Jae Eun ^[1]; Clark, Simon M ^[2]

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1. Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720 (United States)
2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California CA 20015 (United States)

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.

• OSTI ID: 21490049
• Journal Information: Cement and Concrete Research, Vol. 41, Issue 1; Other Information: DOI: 10.1016/j.cemconres.2010.09.010; PII: S0008-8846(10)00214-0; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0008-8846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM SILICATES
CEMENTS
HYDRATES
HYDRATION
LATTICE PARAMETERS
MECHANICAL PROPERTIES
SLAGS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
MATERIALS
OXYGEN COMPOUNDS
SCATTERING
SILICATES
SILICON COMPOUNDS
SOLVATION