Open AccessEffect of citric acid on setting-time and compressive strength of concrete
Author(s) -
Joko Purnomo,
Sri Sumarni,
Ida Nugroho Saputro
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/578/1/012077
Subject(s) - citric acid , retarder , compressive strength , hardening (computing) , materials science , cement , composite material , chemistry , organic chemistry , layer (electronics)
Citric acid is an organic acid naturally present in fruits, one of the ingredients that can be used as a retarder in a concrete mixture. As retarder serves to slow the timing of concrete hardening. In the implication the use of this material affects the time of hardening and compressive strength, therefore need a better control to get the optimal value. The test sample used was 36 with variation of addition of citric acid 0%, 0.15%, 0.3%, 0.45% for the weight of cement. The results obtained the greater the addition of citric acid the longer the hardening of concrete and the greater workability of concrete. The maximum value of compressive strength of concrete is in the addition of 0.15% citric acid with an increase in compressive strength of 82.2% of the nominal concrete.