MATEC Web Conf.
Volume 86, 20165th International Scientific Conference “Integration, Partnership and Innovation in Construction Science and Education”
|Number of page(s)||6|
|Section||6 Recycle of inorganic waste in construction|
|Published online||28 November 2016|
Water-resistant gypsum binder
1 Prof. Chair of binding agents and concrete, Moscow State University of Civil Engineering, 26, Yaroslavskoye Chausse, Moscow, Russian Federation
2 Director, “Promressurs” Co. Ltd., Moscow, Russian Federation
* Corresponding author: email@example.com
The authors developed a multi-component gypsum binder (MGB) with an improved (by 1.8 to 2.2 times) water resistance value in comparison with the initial gypsum and a softening factor value within the range of 0.85 to 0.91 through the introduction of a complex additive containing carbide mud and bio-silica. The use of a complex additive provides for the formation of a denser structure due to the formation of low-base calcium hydrated silicates at early stages of the hardening process under wet or dry air conditions. The developed binding agent has a lower (by 2.5 to 3 times) open porosity, a greater compressive strength (by 1.4 to 1.6 times for a dry state and by 2.6 times in a water-saturated state) and does not require any special curing conditions in contrast to the other multi-component gypsum binders. The authors show the influence of mud-and-silica additive on the properties of hardened MGB and suggest a method of computation of the optimum MGB composition for given components.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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