Effect of Hydrophobic Water Repellent Admixture on the Compressive Strength of Concrete in Highly Aggressive Water (Dead Sea Water as a Case Study)

The compressive strength of concrete may be affected by seepage salt water. Dead Sea water is a hazardous environment for due to high concentration salts. aim this study was investigate the effect on containing hydrophobic water-repellent admixture, and determine optimum dosage admixture used reduce effect. Three types cement were (Ordinary Portland Cement, Pozzolanic Sulphate-Resisting Cement) with various dose rate repellent (0%, 2%, 4% weight). An experimental approach, in which specimens divided based type specimen’s age, adopted. Nine control cubic cured plain ensure that required reached (54) tested at 7 28 days early long-term strength. results showed reduction 28-day occurred all three used, but addition repellent, alleviated, percentage 2% weight.