Assessment of Replacing Wastewater and Treated Water with Tap Water
in Making Concrete Mix.
Bassam Z. Mahasneh
Mutah University, Civil and Engineering Environment Dept.
Abstract:
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
Strength.
