Studi Pemanfaatan Glasspowder Pada Karakteristik Mekanis dan Fisis Paving Blok Geopolimer

Abstract

Fly ti t one of the pozzolanic materials derived from coal combustion. However, unlike Portland cement, fly ash does not have the capacity to bond. An activator solution, such as Portland cement, is required so that fly ash can have binding capability. Glass trash from industry and homes, in addition to fly ash, may be processed to be utilized as a material that can increase the performance of geopolymer materials since it contains considerable silica (SiO2) and lime (CaO) components. Glass powder was utilized as a fly ash alternative in geopolymer paving blocks in percentages of 0%, 15%, 30%, 45%, and 60%. The compressive strength and water absorption of paving blocks were examined. When the material was 7 days old, the test was performed. The findings revealed that the best compressive strength was found in paving block geopolymer with 45% glass powder variation and 55% fly ash variation, namely 30.67 Mpa, which comprised paving block quality B. The lowest water absorption was reported in paving block geopolymer with 45% variation in glass powder. The paving blocks manufactured in this study were of B quality, according to SNI 03-0691-1996.