Behavior of Square Footing Erected on Gypseous Soil Treated by Ceramic Wastes

Gypseous soil, as is well known, includes a specific quantity of gypsum. Gypsum water-soluble salt with solubility (2.2-2.6) gram/liter in distilled - water. As result, the presence gypsum poses challenge when building structures on this since dissolves exposed to water, producing gaps between soil particles and so causing collapse. This study examines behavior shallow foundation rested gypseous soil. Three types contents (61%, 45.3%, 27.9%, respectively) are used, treated ceramic wastes, which waste product construction. The Soil samples were collected from site Tikrit University's campus. consists six test cases, two for each type one dry other wet, where first case was used baseline comparison, without addition rest added three proportions (3%, 6%, 9%) mixing depths ratio (B/2, B, 3B/2).The percentage 9% wastes gives best results improving, bearing capacity improved by 233%, 256 %, 289% high 78%, 94%, 111% medium 60%, 87%, 113% low soils. Adding wet improves strength lowers settlement some extent, reduces influence water it.