Open AccessChemical Resistance of Nano Silica Added Concrete
Author(s) -
Rajput Babalu*,
Pimplikar Sunil
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.l2607.1081219
Subject(s) - immersion (mathematics) , compressive strength , sulfuric acid , nano , durability , materials science , composite material , nuclear chemistry , chemistry , metallurgy , mathematics , pure mathematics
This study investigated the effects of nano silica on acid and sulphate resistance of concrete. The changes in mass and compressive strength of the concrete specimens for different immersion periods were determined. It was observed that, M 30 grade concrete produced with 0 %, 1 %, 2 %, 3 % nano silica have shown mass loss of 11.24 %, 9.01 %, 5.10 % and 3.59 % respectively at 56 days of immersion in acid solution. M 40 grade concrete produced with 0 %, 1 %, 2 %, 3 % nano silica have shown mass loss of 9.36 %, 8.71 %, 4.98 % and 3.56 % respectively at 56 days of immersion in acid solution. M 30 grade concrete produced with 0 %, 1 %, 2 %, 3 % nano silica have shown mass loss of 2 %, 1.55 %, 1.26 % and 0.91 % respectively at 56 days of immersion in sulphate solution. M 40 grade concrete produced with 0 %, 1 %, 2 %, 3 % nano silica have shown mass loss of 1.63 %, 0.82 %, 0.43 % and 0.29 % respectively at 56 days of immersion in sulphate solution. Similarly, the reduction in compressive strength after immersion in acid and sulphate solution was observed with the addition of nano silica. Among the two chemical environments, sulfuric acid was found to be most dangerous for all concrete mixes. Concrete mixes produced with nano silica showed superior durability