Assessment of Replacing Wastewater and Treated Water with Tap Water
in Making Concrete Mix.
Bassam Z. Mahasneh
Mutah University, Civil and Engineering Environment Dept.
This work carried out to assess the strength of concrete using treated water and wastewater in concrete mix as a comparison with the strength of concrete made by tap water. The compressive and splitting strength were measured for each type of water and the results show that; using wastewater and treated water decrease the strength of the samples of cubs and cylinders; were the average reduction for compressive strength of cube is (7.3%) and for splitting cylinder strength is (9.7%) for treated water. But using wastewater gives an average reduction of compressive strength of cube about (23.2%), and for splitting cylinder strength about (23.1%). The performance requirements in British Standards and AASHTO T26-79 requires that the compressive strength of concrete cubes made of untreated water not to be less than 90% of cubes made with tap water; according to these specification the treated water could be used in concrete mix. The chemical composition of wastewater is affecting the concrete strength under many considerations like; hydration process, steel corrosion and the properties of concrete in the future; durability of concrete.
Keywords: Assessment, Tap water, Wastewater, Treated water, compressive strength, splitting