Environmentally Safe Mortar and Grouting Solutions with Hollow Glass Microspheres

This article deals with the problem of increasing ecological safety, effectiveness and quality of mortars and grouting mortars. It is achieved by introduction of hollow glass microspheres into the cement mortar. Hollow glass microspheres have amorphous walls, which consist of silicon, sodium and boron oxides. The article considers physical-and-mechanical and environmental properties of hollow glass microspheres, the results of chemical, X-ray, microstructure and granulometric analyses of the microspheres are given. The application recommendations for the hollow microspheres are given, the role of microspheres in the process of the lightweight cement mortars and grouting mortars structure formation is noted. The experimental results are presented. (C) 2016 The Authors. Published by Elsevier Ltd.