Abstract:
At present, 16 % of fresh water is being used in the construction industry. Freshwater is a finite and precious resource that is essential for sustaining life. This resource is becoming more and scarcer with increasing demand. Similarly, disposal of waste water is also a great threat for human health on environmental grounds. This research work is offering solution to these two global problems with the collaboration of concrete industry. Particularly, the analysis of the testing results on concrete cubes prepared by using Raw Waste Water and Primary Treated Waste Water shows encouraging results. A series of compressive strength tests was carried out on 324 concrete cubes as per British Standard. Test cubes were cast by using three types of water i.e., fresh tap water, primary treated waste water and municipal raw sewage. The qualitative analysis of three types of water was carried out in an environmental engineering laboratory. Research was spread over two types of cements i.e., Ordinary Portland Cement and Sulphate Resistant Portland Cement. Two mix. ratios (1:2:4 & 1:1.5:3) and three water/cement ratios (0.55, 0.60 & 0.65) were used in casting cubes. Curing was stopped at the age of 3, 7, and 28 days and compressive strength test carried out. Results are plotted and effect of using different types of water, cement, mix ratio, water/cement ratio and curing period, on compressive strength of concrete is discussed. Results thus obtained has satisfactorily proved that municipal waste water in its raw form or after getting some preliminary treatment can be effectively used in casting some special forms of concrete work.
Page(s):
876-890
DOI:
DOI not available
Published:
Journal: Journal of Natural & Applied Sciences Pakistan, Volume: 4, Issue: 1, Year: 2022
Keywords:
Wastewater
,
Compressive Strength
,
Raw Sewage
,
Sulphate Resisting Cement