Plaster composites modified morphology with enhanced compressive strength and water resistance characteristics

摘要

Due increasing attention for non-conventional building materials, modified gypsum plaster composites were studied to assess their water resistance when blended with different additives and their effect on the strength properties. The plaster-composites were formed by dry mixing of fine or ultrafine sand, silica fume, silica gel, rice husk, slag, calcium carbonate or polyvinyl acetate (PVA). Their phase composition was investigated using FFIR and XRD with crystallite size data to be correlated with their microstructure morphologies as elucidated by SEM for the air- and water-cured samples.