Strength Assessment of Hypo Sludge Concrete with Water Containing Sodium Hydroxide

This paper presents the effect of sodium hydroxide (NaOH) present in the curing water on the strength of hypo sludge cement concrete. The concrete is produced by mixing of percentage replacement of cement by hypo sludge and curing water containing NaOH of 5% concentration with constant dosages. This research paper describes the feasibility of using the hypo sludge in concrete production as partial replacement of cement by weight. The cement has been replaced by hypo sludge accordingly in the range of 0%, 10%, 20%, 30% and 40% by weight of cement for M40 mix. The compressive strengths were evaluated for 56 days of normal curing and 28 days normal and 28 days 5% NaOH contain water curing. Compressive strengths of hypo sludge Cement Concrete compared with the control specimens. By using Regression Models predict the compressive strength value and the ratio with predicted values. (paper)