EFFECT OF FLY ASH ON STRENGTH AND DURABILITY OF SLURRY INFILTRATED FIBROUS CONCRETE

Several research works have been executed to examine the performance of slurry infiltrated fibrous concrete (SIFCON) under static and impact loading. But limited works have been done on the strength and durability characteristics of SIFCON made with binary blends of supplementary cementitious materials. The experimental investigation was carried out to study the strength and durability characteristics of slurry infiltrated fibrous concrete with partial substitution by fly ash (10, 15, 20, 25 & 30% as replacement of cement. SIFCON matrix containing a constant fibres content (10%) and water/binder = 0.4 were used throughout the entire investigations. The test results revealed that the incorporation of a blended cement with fly ash in SIFCON decreases the mechanical properties and improves the durability thus indicates the sorption coefficient decreases compared to control specimen. Regression model has been developed from the experimental results for estimating the compressive strength, split tensile strength, flexural strength and water permeability of SIFCON made with the binary cementitious blend of fly ash. The predicted values were satisfied with the experimental results.