Concrete mix using tertiary treated wastewater and effect of ambient and elevated temperatures on its properties Online publication date: Thu, 29-Sep-2022
by Ammar Ben Nakhi; Jasem M. Alhumoud
International Journal of Materials and Structural Integrity (IJMSI), Vol. 14, No. 2/3/4, 2021
Abstract: The aim of this study is to investigate the effect of using tertiary treated wastewater (TTWW) on concrete mixes exposed to high temperatures (up to 800°C) with different water cement ratios (0.5, 0.6, and 0.7). Slump, percentage of air content, density of concrete, and setting times were tested on freshly mixed concrete. The properties of the concrete tested were setting time, compressive strength at ambient (at 3, 7, 21, 28 and 35 days) and elevated temperatures (up to 800°C), and the flexural strength (at 28 days). The compressive strength of concrete made with TTWW, as well as curing in potable water (PW) and tertiary wastewater, was found to be in the range of 85-95% of normal concrete, which satisfies ASTMC-94 norms. The flexural strength of concrete made using TTWW, exhibited significant differences to the control concrete. This study indicated that the properties of concrete mixed with TTWW are within acceptable limits under varied conditions.
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