Feasibility of Using Harvested Rainwater and Stormwater in Concrete Mixtures

Abstract

Freshwater preservation and conservation are becoming more and more imperative as worldwide populations increase. Nowadays, making concrete needs huge quantities of freshwater. The present research shows research findings on the feasibility of substituting freshwater in concrete mixing with surface runoff water, RCC rooftop harvested rainwater and conventional water. RCC rooftop harvested water(HRW), surface runoff water(SW), bore well (BW) water, and potable water (PW) were the four sources from which samples were collected. Physical and chemical analysis was carried out on four various sources as per standard methods [APHA]. The performance of four different sources of water on physical properties i.e., setting time, workability, and mechanical properties of ordinary Portable cement (OPC) were examined and compared with conventional concrete specimens. According to the findings, all of the water's qualities from the various sources satisfy the recommended IS 456 (2012) and other standards for concrete-quality water. No significant change was observed in the mechanical properties of four different sources of water samples that were superior to those of conventional concrete. utilizing HRW and SW as alternatives to freshwater could save a lot of freshwater while also protecting the environment.

Keywords: Freshwater, stormwater, harvested rainwater, Setting time, Compressive strength.