The Influence of Base Course Types on Rigid Pavement Concrete Strength

摘要

This study presents a comparison the strength of rigid pavement using different five base courses. The experiment was conducted at structural and material laboratory, the samples of concrete pavement were represented by concrete cube that placed on different base material. First sample concrete cube was placed directly on the subgrade, the second sample was placed on the granular base course, the third sample was on the granular sub-base course with prime coat, the fourth sample was on the lean concrete, and the fifth sample was on lean concrete separated using impermeable membrane. The result of concrete strength is shown in values of concrete compressive strength, the concrete sample placed on lean concrete base using impermeable membrane has the highest strength compared another concrete on another base course material. The use of impermeable membrane on lean concrete is the possible factor that could produce the highest compressive strength. This membrane would retain cement water in concrete mix, so the strength of concrete is still high.