Experimental Investigation on Properties of High Performance Concrete with Mineral Admixtures in Pavement of Highway

To meet demand of high performance pavement concrete in highway, different proportional concretes incorporating 30%-40% ground granulated blast furnace slag and (or) fly ash were investigated on engineering properties in laboratory. Workability of fresh concrete was evaluated by result of testing slump, mechanical property of concrete by flexural strength, abrasion resistance of concrete by index of abrasion resistance and durability of concrete by chloride diffusion coefficient and value of charge passed. The results indicate that measured characteristics of concretes are superior to the relevant requisitions in specification of highway. It was revealed that partial substitution of mineral admixtures increased workability of fresh concrete, abrasion resistance and durability of concrete. Addition of ground granulated blast furnace slag is more favorable to flexural strength of concrete than that of fly ash, in particular for early-term to avoid delaying construction time with lower strength caused in use of great volume admixture.