Open AccessImproved performance of coal bottom ash co-mixtured concrete
Author(s) -
Satgurdev Simran,
A.R. Dar,
Rakesh Kumar,
M. Adil Dar,
J. Raju
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/561/1/012033
Subject(s) - durability , shrinkage , absorption of water , bottom ash , coal , aggregate (composite) , materials science , permeability (electromagnetism) , cement , waste management , environmental science , fly ash , composite material , engineering , membrane , biology , genetics
The present research aims to prepare concrete by adopting coal bottom ash (CBA) as a replacement of fine aggregate. Various strength and durability tests were performed by replacing fine aggregate with CBA in percentages varying from 0-80%. To achieve workability requirement in specimens with higher CBA content, higher water to cement ratio was adopted, which lead to variation in the water absorption behaviour. The results indicated that addition of higher CBA content lead to drop in workability and plastic density. Furthermore, replacement of CBA above 40% leads to a drastic drop in strength characteristics. In addition, increasing CBA content improved drying shrinkage, standard consistency and water permeability of the concrete. Finally, the results confirmed that concrete can be effectively manufactured by judicious utilization of CBA as partial replacement of fine aggregate.