Open AccessService life prediction of geopolymer concrete with respective to chloride ion penetration
Author(s) -
A. Raziya Tasneem,
B. Sarath Chandra Kumar,
Y. Himath Kumar
Publication year - 2020
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/912/6/062033
Subject(s) - sodium hydroxide , ground granulated blast furnace slag , sodium silicate , materials science , compressive strength , service life , sodium , geopolymer , cementation (geology) , penetration (warfare) , composite material , chloride , geopolymer cement , alkali metal , cement , metallurgy , chemistry , organic chemistry , operations research , engineering
Geopolymer concrete is an innovative constriction material which is produced by the chemical action of inorganic molecules like sodium hydroxide, sodium silicate. This acts as a binding material for the cementation’s material. The cementations material used in the present study is Ground Granulated Blast-furnace Slag (GGBS). In this paper, the service life of the geopolymer concrete structure presented to know the life span. The sodium hydroxide solutions having the molarities of 8M and 10M are used. The ratio of the alkali activators (NaOH and Na 2 SiO 3 ) used is 1:2.5. The normal concrete mix having the water-cement ratio of 0.45 is also cast. The cubes are exposed to the NaCl solution. The specimens exposed to the solutions are drilled in respective depths. The powder is collected from the specimens and are titrated against with AgNO 3 to find the percentage of chloride ion penetration. The compressive strength of the specimens for 28, 56, and 90 days are taken. In this paper it was also observed that as the days increases the percentage of chloride ion penetration decreases.