Mechanical and Durability Properties of Recycled Aggregate Self-compacting Concrete Along with Basalt Fibers

Abstract

The experimental investigations were carried out on recycled aggregate concrete to study the influence of basal fiber through mechanical and durability tests. The mechanical tests like compressive strength and split tensile strength were conducted on recycled concrete aggregate along with basalt fiber of various proportions. The durability tests like carbonation properties were conducted on recycled concrete aggregate along with basalt fiber. The percentage of recycled aggregate replacement was varied as 0, 50, and 100%, whereas the percentage of basalt fiber was varied as 0, 2, and 4 kg/m3. In hardened concrete, compressive strength, split tensile strength test, and carbonation tests were conducted against 7, 28, and 90 days after casting and their behavior was compared. It is observed that the basalt fiber does not contribute much in case of compressive strength of the concrete. It is observed that the split tensile strength has found to be increased considerably with increasing basalt fiber. The split tensile strength of R50B0 has been found to be increased 14% as compared to conventional SCC, R0B0 concrete, however, the strength of R50B0 concrete was found to be decreased by 22% as compared to R100B0 mix. It is observed that the carbonation depth of concrete was found to be increased with increase of recycled concrete aggregate as well as basalt fiber.