UTILIZATION OF TEXAS BOILING TEST TO EVALUATE EFFECTIVENESS OF ANTISTRIPPING ADDITIVES IN SAUDI ARABIA.

A comparative study was performed to evaluate antistripping additives using Saudi asphalt cements and local aggregates. The effectiveness was examined along with different types of additives and sulfur-extended asphalt by using the Texas boiling test. Test results indicate that treatment with a lime slurry is the most effective method on all materials except two types of natural sands. It is also observed that the chemical reaction or physical adsorption appears to occur immediately after adding lime slurry to aggregates