Open AccessExperimental study of optimal self compacting concrete with spent foundry sand as partial replacement for M-sand using Taguchi approach
Author(s) -
D.B. Nirmala,
S Kharade Raviraj
Publication year - 2016
Publication title -
selected scientific papers
Language(s) - English
Resource type - Journals
eISSN - 1338-7278
pISSN - 1336-9024
DOI - 10.1515/sspjce-2016-0013
Subject(s) - taguchi methods , foundry , cement , orthogonal array , aggregate (composite) , fly ash , geotechnical engineering , materials science , engineering , metallurgy , waste management , composite material
This paper presents the application of Taguchi approach to obtain optimal mix proportion for Self Compacting Concrete (SCC) containing spent foundry sand and M-sand. Spent foundry sand is used as a partial replacement for M-sand. The SCC mix has seven control factors namely, Coarse aggregate, M-sand with Spent Foundry sand, Cement, Fly ash, Water, Super plasticizer and Viscosity modifying agent. Modified Nan Su method is used to proportion the initial SCC mix. L18 (21×37) Orthogonal Arrays (OA) with the seven control factors having 3 levels is used in Taguchi approach which resulted in 18 SCC mix proportions. All mixtures are extensively tested both in fresh and hardened states to verify whether they meet the practical and technical requirements of SCC. The quality characteristics considering “Nominal the better” situation is applied to the test results to arrive at the optimal SCC mix proportion. Test results indicate that the optimal mix satisfies the requirements of fresh and hardened properties of SCC. The study reveals the feasibility of using spent foundry sand as a partial replacement of M-sand in SCC and also that Taguchi method is a reliable tool to arrive at optimal mix proportion of SCC