Evaluation of the physical and mechanical properties of gypsum rocks and assessment of their durability in the quarries of Northwest Kirkuk, Iraq

Abstract

This study evaluates the physical and mechanical properties of gypsum rocks from quarries in northwest Kirkuk, Iraq, to assess their durability under local environmental conditions. Six stations were selected for sample collection, with seven samples analyzed for porosity, specific gravity, water absorption, moisture content, point load strength, and durability through wet-dry cycles. Results revealed low porosity (1.15–2.70%), minimal moisture content (0.48–1.01%), and moderate water absorption (0.74–1.77%), indicating high cohesion and limited susceptibility to water infiltration. Durability tests classified the rocks as