Open AccessThe Effect of Microbes and Fly Ash to Improve Concrete Performance
Author(s) -
Adlizie Rifkianda Muhammad,
Januarti Jaya Ekaputri,
Makno Basoeki
Publication year - 2021
Publication title -
jacee (journal of advanced civil and environmental engineering)
Language(s) - English
Resource type - Journals
ISSN - 2599-3356
DOI - 10.30659/jacee.4.2.60-69
Subject(s) - fly ash , compressive strength , ultimate tensile strength , cement , materials science , composite material , properties of concrete , pulp and paper industry , environmental science , engineering
This paper presents the application offly ashcombining with microbes in concrete to reduce cement content.A class F fly ash as cement replacementwas applied with ratios of 20%, 30%, 40%, and 50% to reduce hydration heat. Microbes from bacterial consortium were applied to as the filler to increase concrete compressive strength. The concrete mix design from SNI 0328342000 was applied for a compressive strength target of 30 MPa. The mechanical test was carried out consisting compressive and tensile test.Concreteworkabilityand the heat hydration measurement were performed for fresh concrete.The results showed that the maximum strength of 45.10 MPa was obtained from specimens with 30% fly ash content.Application of microbes associated withfly ash content of 40% showed the maximum strength of 48.47 MPa.It was found that the tensile strength also increased with the application offly ashand microbes.Hydration temperature of concrete decreased with the increase ofthe ashcontent.This proves that the application offly ashand microbes in concrete can reduce the cement as well as increasing the concrete performance.