The Effects of Using Wastewater Effluent on Efficiency, Permeability, and Mechanical Properties of Self-Compacting Concrete

With the growth of different uses of water and its conversion into wastewater, a large volume of various types of wastewater enters the environment. Therefore, the need for wastewater treatment and optimal use of its effluent can be considered an important step towards environmental protection. Considering the construction industry uses a significant part of nature's raw water for producing different materials, it can be expressed that using the effluent of the wastewater treatment plant is a valuable step in environmental protection. Self-compacting concrete (SCC) is a flowing concrete that does not require vibration and, indeed, should not be vibrated. It uses superplasticizers and stabilizers to significantly increase the ease and rate of flow. In this study, the effects of using the effluent of the wastewater treatment plant on mechanical properties, efficiency, and permeability of Self-Compacting Concrete specimens cured for 7, 14, and 28 days have been investigated. It should be noted that tap water has been used to make control samples. The results of the experiments show a slight decrease in compressive and tensile strength of the effluent samples compared to the control samples. Also, according to the results obtained from the efficiency experiments, it can be concluded that the effluent self-compacting concrete samples and the control samples are in the same classification. they take. On the other hand, according to the results of permeability experiments, it can be concluded that the samples of effluent self-compacting concrete have an increase in permeability compared to the control samples and the amount of permeability decreases with increasing concrete age.