Groundwater samples were collected from 35 locations in Ranipet, Vellore district; Tamil Nadu was assessed in the Monsoon, Post Monsoon and Pre Monsoon season from July 2012 to May 2013. Water quality assessment was carried out for the parameters like pH, Total hardness, Total dissolved solids, Total alkalinity, Electrical conductivity, Chloride, Calcium, Magnesium, Sodium, Potassium, Nitrate, sulfate, Phosphate, Iron, Chromium. The Water Quality Index values and Correlation coefficient values were calculated to check the exceedingly allied and interconnected with water quality parameters (WQPs). The Regression equations involving these known and linked with parameters were formulated for greatly correlated WQPs. Assessment of experimental and predictable values of the different WQPs parameters reveals that the regression equations developed in the study can be very well used for making water quality monitoring by observing the above parameters alone. The result of examination has been used to recommend a model for predicting water quality, the investigation reveals that the ground water of the area desires some extent of treatment before utilization, and it also needs to be confined from the perils of pollution.

Abstract.The main aim of this study is to evaluate the groundwater assessment and pollution by using the DRASTIC method and the correlation between the chromium strength present in and around Ranipet areas. The present study is to determine the vulnerable zone for groundwater pollution by integrating hydrogeological layers in GIS environment. Thirty five groundwater samples were collected from the study area and analyzed in the laboratory for physico-chemical parameters and heavy metals like chromium during 2012. DRASTIC means depth to water table, recharge rate, aquifer media, soil permeability, topography, the impact of the vadose zone, and hydraulic conductivity and this can be incorporated in the DRASTIC model using GIS techniques. In the model has vulnerability index value between 128-166 being high and value between 166-199 being very high whereas the chromium concentration between 0.035 mg/l to 0.5429 mg/l. The statistical study puts into proof a great positive correlation between vulnerability and application of the chromium in the groundwater. High chromium awareness is present in high contamination areas over and above in moderate polluted areas. The present model can be used for estimation and groundwater management.

No abstract

At present, the construction of concrete in marine areas has been facing durability issues. This research uses fly ash to determine the effect of seawater curing on strength and durability of different concrete structures. The chemical reaction of chlorides, sulphates and alkalies like sodium and potassium, and in some cases dissolved carbon dioxide affect the strength of concrete as well as durability vigorously. Normal and sea water are used as mixing water in making the test specimens. Different ingredients have been selected to determine the compressive strength i.e. 30% fly ash with 70% of cement concrete; 70% fly ash with 30% of cement concrete and only cement concrete. Finally, three specimens are cured in normal tap water and seawater for 7, 14 and 28 days, and the compressive strength is tested. The result indicates that the compressive strength of concrete is higher in normal water and lower in the seawater in different days of curing.

The aim of the project is to assess the suitability of groundwater for human consumption based on the computed water quality index values, characteristics of groundwater and assessment of water quality. The water quality index (WQI) is main tool to determine the drinking water quality in urban, rural and industrial area. This means as an index reflecting the composite influence of different water quality parameters which is considered and taken for calculation of water quality index. In the present study, fifteen groundwater samples were collected from the Budigumma Village Anantpur district in the state Andhra Pradesh in in india Nine water quality parameters have been considered for the calculation of water quality index viz. pH, total hardness (TH), total dissolved solid (TDS), calcium (Ca), magnesium (Mg), nitrates (NO 3 ), chlorides (Cl ), sulphates (SO 4 ), fluorides (F ). The World Health Organization (WHO) has been considered to assess the suitability of groundwater for drinking purposes and for the calculation of WQI. The WQI index for the same has been calculated and the values ranged from 97.78 to 108.37. The current study shows that 87% area is falling under the poor category for drinking water and the remaining 13% comes under as good for drinking purposes as per the WQI classification. The analysis reveals the fact that the ground water of this village needs a degree of treatment before consumption and needs to be protected from further contamination.