| Abstrakt: |
Large amounts of CO2 are released while manufacturing ordinary Portland cement (OPC), significantly damaging the environment. Therefore, the world resorted to producing concrete based on pozzolanic materials such as slag or fly ash, rice husk ash, metakaoline, etc, and it was called geopolymer concrete. In the presented work, geopolymer concrete (GPC) was made using a variety of lightweight aggregate (LWA) types. One of the LWA types was crushed thermostone, which is utilized as coarse aggregate and fine aggregate. As for the other type, it was an industrial aggregate made of montmorillonite clay after several manufacturing processes. Following some non-destructive and destructive tests, including those for compressive strength, UPV, density, dynamic modulus of elasticity, shear modulus and Poisson's ratio were calculated. Sodium silicate was used with sodium hydroxide at a concentration of 10 M. The majority of construction applications can be met by several lightweight concrete mixes produced. While the density value decreased from the reference sample, the compressive strength and ultrasonic pulse velocity also decreased. The coarse and fine aggregate sample of montmorillonite with a grade of 5-25 had the best compressive strength, as the compressive strength exceeded 19 MPa and achieved a decrease in density by 25%, and the other dynamic properties were calculated. [ABSTRACT FROM AUTHOR] |
