Fascinate in approaching pH Water Consequences on Mechanical and Durability Properties

Abstract

Potable water is a treasurable and unusual commodity in emerging and advanced countries. Due to its limited availability, some waters not fit for drinking may be suitable for concrete making, provided they satisfy the acceptance criteria. One viable approach is to employ these non-potable waters with altered pH as a substitute for tap water in concrete. This study assessed the effect of mixing water's pH on concrete's mechanical and durability properties. Diverse mixing waters with pH1.9, pH3.2, and pH8.9 were obtained and subsequently compared mechanical and durability properties with the concrete mix of the same grade with normal mixing water of pH7.4 for the 7, 28, and 270 days. The maximum design compressive strength of 33.26 N/mm2, flexure strength of 3.02 N/mm2, and splitting tensile strength of 2.37 N/mm2 for tap water with pH7.4 for 28 days were recorded. The result indicates that the mechanical properties of water with pH1.9 strength decreased by 45.43%, pH3.2 strength decreased by 30.58%, and pH 8.9 strength increased by 7.69%. After that, research is done to obtain an exact optimum substitution level of cement by G.G.B.S. (15 – 60% at an increment of 15%) and Waste glass (5 – 20% at an increase of 5%) combined for the O.P.C. concrete mix followed by simulation for the same. A constant water/cement ratio of 0.4 was taken to analyze the mechanical properties (compressive, flexural, and split tensile strength) of the combination of waste glass and G.G.B.S. concrete mix.