Development of Self-Compacting Concrete using Composite Cement with Partial Replacement of Potable Water with Treated Wastewater

Abstract

Abstract: Due to the rapid urbanization in the world, the groundwater level in this continent is decreasing by days. In addition, sea levels are rising due to global warming. For this reason, potable water resources are depleting at an alarming rate in many countries. This trend is observed not only in India, but all over the world. The study discusses the vitality of treated domestic and industrial wastewater that can be used for concreting at construction sites which can help to eliminate the potable water problem. Different physical and chemical properties of the industrial and domestic treated wastewater will be identified. Its effect on the properties of self-compacting concrete was examined in this study. The main objective of this research was to provide a durable and effective solution to the water scarcity. SCC can help mitigate these types of problems in such harsh jobsite environments. Preferably the development of concrete mixes, where pouring and compacting is less dependent on available labor at a particular site, can help improve the actual quality of concrete in the structure and thereby its durability. It is therefore an important driving force in the development of self-compacting concrete. This thesis demonstrates an opportunity to use treated wastewater as an alternative to potable water in concrete. This trial investigation has been carried out at SCC with composite cement having different compositions. Potable water was replaced with treated wastewater by 50% and 100%. Using these additions M30 and M35 grade SCC were casted. The properties of fresh concrete were determined using the slump flow, T500mm test, the V-funnel test and the L-Box test. In addition, this study highlights the average compressive strength of cubes, tensile strength at fracture and flexural strength of concrete. From the above results of fresh concrete and hardened concrete properties, it can be inferred that treated wastewater can be used as a substitute of potable water. Keywords: Potable water, Treated wastewater, SCC, slump flow, V-funnel, L-Box, Compressive strength, Split tensile strength, Flexural strength.