Experimental Study on the Performance of Green Concrete Mixed with Scoria and Recycled Aggregate

Abstract

In comparison to regular concrete, scoria concrete is lighter on its own, has a higher strength, performs better during earthquakes, and is better at insulating heat. It has a good chance of being used in modern engineering structures, which can successfully reduce the weight and load of the building. This paper substitutes scoria for 20% of the cement, fly ash for 10% of the cement, and recycled aggregate for the 30% coarse aggregate by processing the waste concrete that accumulates in the city using specific technology. The research's findings can be used in the design and construction of building envelopes in extremely cold climates. The compressive strength and thermal properties of scoria concrete self-insulated blocks were simulated by software using ANSYS finite element software. The block structure's theoretical heat transfer coefficient is 427810428 W/(m·K), which is in accordance with the requirement that the enclosure structure's thermal conductivity not exceed 0.5 W/K in areas of extreme cold in the north. The simulated and tested values were compared. This product provides reference for civil engineering construction.