Improving the Efficiency of Non-Autoclaved Silicate Materials Based on Aluminosilicate Feedstock through the Use of a Synthetic Crystalline Filler

Abstract

Currently, there are various ways to improve the performance specifications of building composites of various functional purposes. Thus, one of the possible ways to improve the performance specifications of building materials is to control and modify the composite structuring processes at the microlevel by using of various crystal seeds. The studies have established the possibility of improving the performance specifications of non-autoclaved silicate materials based on non-conventional aluminosilicate feedstock, which consists in the crystallochemical modification of the CaO-SiO2-Al2O3-H2O system with a synthetic crystalline filler C-S-H mainly represented by low-basic calcium hydrosilicates of variable composition. The optimal CaO and crystalline filler C-S-H contents at which the maximum strength characteristics are ensured are 8 and 2.5 %, respectively. The use of the synthetic crystalline filler in the technology of non-autoclaved silicate materials based on non-conventional aluminosilicate feedstock allows increasing the softening coefficient by 15-20% which may expand the scope of this material.