Influence of natural pozzolana content on self-compacting concrete durability properties

摘要

This paper presents the results of an experimental investigation on the rheological properties, compressive strength and durability of Self-Compacting Concrete (SCC) containing local Pozzolana. Pozzolana with a fineness of 3500 cm~2/g has been used at different percentages (0%, 10%, 15%, 20% and 25%) as partial cement replacement. Cement content, water to binder ratio of 0.4, gravel to sand ratio of 1.0 and superplasticizer content of 1.8% (by weight of cement) were kept constant in all SCC mixtures. Workability, compressive strength, capillary water and water permeability are reported in this investigation. The substitution content of 10% natural pozzolan seems to give the most favorable effect on the rheological characteristics of SCC. However, the strength and the durability results of the SCC containing 10% of natural pozzolan showed a slight decrease compared to SCC control.