A novel lightweight aggregate containing zeolite with potential use in gypsum composites

The present study is focused on the assessment the impact of a partial zeolitization of expanded glass aggregate on the possibility of its use in the production of lightweight plasters. Highly porous and durable zeolite aggregate were produced by relatively easy treatment of expanded glass-based low-cost material. Physical and mechanical properties (such as density, porosity, water absorption, sorptivity, thermal conductivity, compressive and flexural strength, etc.) of the hardened gypsum plasters with different light fillers have been compared. In addition to studies of the basic physical properties of the plasters, microstructural studies were carried out. It was found that the parameters of plasters with the addition of zeolite aggregate do not differ significantly from the commonly used lightweight plasters with the addition of expanded perlite, however the presence of zeolite noticeably modifies the microstructure of the plaster.

Automated summary

The present study assessed the impact of partially zeolitized expanded glass aggregate on lightweight plaster production. The addition of zeolite did not significantly affect the physical and mechanical properties of the plaster, but noticeably modified its microstructure.