The Effect of Emulsified Asphalt-Salt resistance Cement on Collapsibility of Gypseous soil

Abstract

The main aim of this research is to investigate the effect of emulsified asphalt and cement (Salt resistance) mixture (i.e. the effect of emulsified asphalt–cement mixture) on the collapsibility of gypseous soil. The soil used in this study has been brought from Samara City (About 180 Km) north of Baghdad, with gypsum content of (69%). Series of collapse tests is performed on the soil in its natural state and after treatment by emulsified asphalt-cement mixture, Two percentages of emulsified asphalt are employed and four percentages of salt resistance cement –emulsified asphalt mixture are used in this study. the results of collapsibility tests show that the collapsibility of treated soil samples decreases upon increasing the percentage of emulsified asphalt. Better results were obtained when treated with emulsified asphalt –cement mixture. The results of collapse tests show almost the same behavior with increasing the percentage of emulsified asphalt and cement.