Kajian Kuat Lentur pada Beton Beton Bubuk Reaktif Dengan Silica Fume 15% dan Variasi Pasir Kuarsa

Abstract

High-performance concrete is needed because future developments are required to have tall structures and long spans, so they must have efficient and slender structures. In addition, increasingly limited land has an impact on development. Reactive powder concrete is a solution to these problems. This concrete has a high quality that can make the dimensions more efficient. This research is intended to find out the effect of using silica fume 15% of the binder mass and varying quartz sand content on the flexural strength value of reactive powder concrete. This research used steel fiber 17.5% and superplasticizer 1.9% by weight of the binder and was conducted using the experimental method. The test specimens used in the flexural strength testing were 10x10x40 cm dimension beams with a total of 21 test specimens and using a Universal Testing Machine testing tool. Testing was carried out at the age of 28 days of concrete based on SNI 03-2834-2000. The results of this test obtained the value of flexural strength of reactive powder concrete at variations in quartz sand content of 0%,