PENGARUH PEMANFAATAN AIR EKSTRAKSI ECENG GONDOK TERHADAP KUAT TEKAN BETON K-175

Abstract

This study aims to determine the compressive strength value of K-175 concrete with variations in the
addition of water hyacinth extraction water. The research method used was a laboratory experiment, by
determining the cement water factor and the composition of the new mixture. In this study, 24 cube test
objects were made using variation of water hyacinth extrac mixtures of 1%, 3% and 5%. The results of this
study were the compressive strength value of the average normal K-175 concrete at the age of 14 and28
days the compressive strength results were 144.3 kg/cm2 and 184.3 kg/cm2, while the compressive strength
with variations in the addition of 1% water hyacinth extraction water was of 154.8 kg/cm2 and
196.4 kg/cm2, variations in the addition of 3% water hyacinth extraction water was 164.7 kg/cm2 and
212.3 kg/cm2, while for variations in the addition of 5% was 149.6 kg/cm2 and 193.4 kg/cm2. The optimum
compressive strength obtained in this study was the variation of 3% water hyacinth extracti mixture for the
age for 28 days of age, which was 212.3 kg/cm2.