0 votes 0 votes As per $IS\:456:2000$, the $pH$ value of water for concrete mix shall NOT be less than $4.5$ $5.0$ $5.5$ $6.0$ Construction Materials and Management gate2020-ce-2 construction-materials-and-management concrete-mix-design + – go_editor asked Feb 13, 2020 • edited May 12, 2021 by Chandanachandu go_editor 5.3k points answer See all 0 reply