PENGARUH PEMAKAIAN BAHAN TAMBAH TAWAS PADA AIR RAWA TERHADAP COMPRESSIVE STENGTH BETON

Kenten Laut is a rural locality in the Talang Kelapa District that consists largely of swamp. Residentsrely heavily on swamp's corrosive water for mundane concrete mixing. Researchers this study usedswamp and alum recipe. Swamp were utilized as supplementarycomponents, with content solution varying between 2% 4% by weight cement. Thetest object cube dimensions (15, 15, 15) cm there are fifty them.Compressive strength testing swamp revealed findings 152.69 kg/cm2 14-day-old concreteand 251.93 28-day-old concrete. The compressive concretevaried 156.16 149.78 depending percentage added to mix.Compressive values made 2%, 4%, or 6% alumare 256.19 kg/cm2, 253.97 245.61 respectively. These numbers lower than whatwas anticipated K-300. Compressive typical drops 20.6% after 28 days ofage, but only 14.7% 14 days.