A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Engineering behaviour of clay-bearing calcium sulphate in Dammam Dome, eastern Saudi Arabia
Abstract Most local formations in eastern Saudi Arabia contain variable amounts of clay in calcium sulphate hence an understanding of the engineering behaviour of these materials is a prerequisite for construction. Based on laboratory investigations of field samples, this paper describes the behaviour of clay-bearing calcium sulphate. Results indicated that water intake of anhydrite and gypsum correlated well with crystallization water of the two minerals. The index and swelling properties followed a linear trend with a change in clay content. The swelling potential and the swelling pressure measured 8% and 245 kPa for anhydrite and 1.4% and 56 kPa for gypsum. Surface hydration of clays was the dominant swelling mechanism in the investigated materials with phase transformation partly contributing to swelling in clay-bearing anhydrite.
Engineering behaviour of clay-bearing calcium sulphate in Dammam Dome, eastern Saudi Arabia
Abstract Most local formations in eastern Saudi Arabia contain variable amounts of clay in calcium sulphate hence an understanding of the engineering behaviour of these materials is a prerequisite for construction. Based on laboratory investigations of field samples, this paper describes the behaviour of clay-bearing calcium sulphate. Results indicated that water intake of anhydrite and gypsum correlated well with crystallization water of the two minerals. The index and swelling properties followed a linear trend with a change in clay content. The swelling potential and the swelling pressure measured 8% and 245 kPa for anhydrite and 1.4% and 56 kPa for gypsum. Surface hydration of clays was the dominant swelling mechanism in the investigated materials with phase transformation partly contributing to swelling in clay-bearing anhydrite.
Engineering behaviour of clay-bearing calcium sulphate in Dammam Dome, eastern Saudi Arabia
Azam, Shahid (author)
2008
Article (Journal)
English
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