Open AccessService Life Prediction of RC Structure Incorporated with GGBS Subjected to Chloride Ion Penetration
Author(s) -
P. V. Rajesh,
M Sateesh Babu,
I. Siva Kishore
Publication year - 2021
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/1197/1/012066
Subject(s) - service life , ground granulated blast furnace slag , durability , cementitious , chloride , materials science , compressive strength , cement , composite material , structural engineering , metallurgy , engineering
Durability plays important role in structures that replicates the service life of the structure. Most of the structures are built by using concrete as main construction material. We can improve the service life of structures by substituting cement with secondary materials which contain cementitious property such asGGBS (Ground Granulated Blast Furnace Slag). In this concept we determine the chloride content in reinforced concrete structure which leads to deterioration, when exposed to 3.5% of NaCl solution by using immersion test. Firstly, we cast cubes (150x150x150mm) for conventional mix and mixes with different percentages of GGBS (30%, 50% and70%). Present in this paper we considered 0.30, 0.40 and 0.50 water binder ratio (w/b). Later on, we find the percentage of chloride ion penetrated is tested at 6 weeks and 12 weeks. We determine the compressive strength for 28 days, 56 days and 90 days and the chloride content (%) at 5mm, 10mm, 15mm, 20mm and 25mm depths of specimens, by using an empirical formula of Fick’s 2 nd law. Service life prediction can be helpful to estimate prevailing the life of structure and can plan the better repair strategies and to make critical decisions in practice. We can design new structures such that life cycle cost can be optimized.