Analysis of the Physical Strength of Buildings using Concrete with a Mixture of Steel Slag Waste

Abstract

Concrete is a construction material that is widely used in various building structural elements such as columns, beams, slabs, and so on. High compressive strength, stiffness, and low electrical conductivity are characteristics of concrete, so that concrete is widely used in the design of structural elements. The use of additives in concrete technology has long been developed. Concrete has a flexural strength of 8% - 15% of compressive strength. Some effort is required to increase the flexural strength. One way is to add additional materials, namely Slang Waste or Steel Slag. The purpose of this study was to find out how the effect of adding steel slag waste as a concrete mixture material to increase the physical strength of buildings. Experimental method founded on previous research is utilized. The test object is a cylinder with a 15 cm diameter and a 30 cm height. Normal variations in the amount of steel slag refuse added to sand range between 20 and 50 percent by weight. Normal concrete testing revealed that the maximum addition of 20% concrete compressive strength was 22.63 Mpa, while the highest addition of 50% concrete strength was 20.28 Mpa, compared to 20.27 Mpa for normal concrete. Steel Slag Waste, Compressive Strength, and Concrete are key terms. This indicates that the addition of steel slag waste will increase the flexural strength of concrete, thereby increasing the building's physical durability.