Producing mixtures of Sustainable Recycled Aggregate Concrete to Be Used for Internal and External Artificial Cladding

Abstract

One of the environmental contributions of construction engineers is the use of sustainable materials. Based on this, an experimental program is conducted to determine the effectiveness of using demolished building waste such as recycled aggregates (RA), plastic waste (PW), and textiles waste (TW) in external artificial stone wall cladding (EASWC) and internal artificial stone wall cladding (IASWC). Controlling mixtures of IASWC are prepared from fine RA, white cement, and gypsum. In addition, four types of mixtures have also been prepared, where fine RA is replaced with 5, 10, 20% of PW, and 1, 2, and 4% of TW, and proportions of gypsum to hydraulic binder (gypsum and cement) were 0.4:0.6:0.8. Several experiments are also conducted using RA from different sources (with dominant components of stone SRA, concrete CRA, and block BRA) in three mixtures of EASWC. Experiments showed that the IASWC mixture which contained 2% of TW with a ratio of 0.8 gypsum/ binder ratio, has given greater compressive and flexural strength, 12.6 MPa and 5.5 MPa respectively. The EASWC mixture containing dominant proportions of SRA has greater compressive strength. Finally, sustainable internal and external cladding can be produced from RA, PW, and TW with low cost and acceptable mechanical properties.