Durability of Portland Slag Cement Mortar Made With Non Potable Water

Abstract

IntroductionEver since concrete began to be used as a construction material, potable water has been using as the mixing water in concrete due to the chemical composition is well known. The literature search indicates that, not much research work was carried out on the quality of mixing water in concrete and there were no detailed guide lines [1 -3] for the use of water in concrete. The building code requirements of different countries generally contain broad guidelines on mixing and curing water. Most of the codes consider potable water to be satisfactory for both mixing and curing of concrete and stipulate permissible limits for solids and aggressive chemicals. .However, In recent years, attention has been focused on the potential for various aspects of wastewater reuse, although previous research was performed on the use of wastewater that were produced from the water treatment plants and industries for making concrete and reported that no adverse effects on concrete properties in fresh and hardened state [6][7][8][9][10][11][12][13][14][15][16]. Also [1,17] stated that the compressive strength of the cubes made of water with unknown chemical composition not to be less than 90% of cubes made with potable water. There was a note in BS 3148 -1980which states that non potable water that results in a strength reduction of up to 20% can be acceptable compared to that of cubes made with potable water, but the mixture proportions should be adjusted appropriately. However, limit of a chemical in mixing water of concrete given by various codes is tabulated in table .1 Therefore, throughout Andhra Pradesh 71 municipalities and 13 municipal corporations were existed. From these municipalities, small to large scale water treatment plants were setup. As a result of water treatment plants, huge volume of ground water is extracting and huge volume of water form plant outlet discharging into side drains. Hence, present work is taken up on the effect of four typical plants outlet waters on properties of PSC and magnesium sulphate effect on PSC mortar.