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Pervious concrete is one of the most promising sustainable material nowadays. Pervious concrete is the mixture of cement, smaller size coarse aggregate, water and admixture. As cement industry is one of the most polluted industry, so for reducing the pollution and cost of concrete cement may be fully or partially replaced by waste materials like fly ash, rice husk ash, waste rubber tire, furnace slag, silica fume, solid waste etc. This paper illustrates the performance of pervious concrete with these sustainable materials replacing or partially replacing cement & aggregate. It is observed from the study that compressive strength of pervious concrete is increasing by introducing fly ash, furnace slag, and rice husk ash, silica fume, and solid waste (glass powder, ceramic waste, bottom ash). Whereas compressive strength is decreasing by addition of rubberized materials. Permeability is increasing with furnace slag, ceramic waste but glass powder, silica fume has no effect on permeability. Though rubberized materials decreases the tensile strength and compressive strength of pervious concrete, it increases the abrasion resistance & freezing-thawing resistance. Partial addition of rice husk ash, furnace slag, silica fume, glass powder also enhance tensile strength of pervious concrete. All the above mentioned materials are environment friendly but solid waste, furnace slag and silica fume has the highest contribution to the strength and permeability of pervious concrete.

High-rise buildings are comparatively flexible with a low damping value having greater possibilities of failure and less serviceable. Failure potential can be minimized by counteracting vibrations. Methods are available to reduce the vibration of the tall buildings. One of the methods is control of vibrations using Tuned Mass Damper. The behaviour of tall buildings is analysed by considering specific time history data along with gravity loads. The structural mass required to resist the lateral loads increase exceedingly as the level of the building goes up if the stiffness of the building is not sufficient to resist the lateral forces. The main aim of the structural engineer is to provide a suitable solution for the effects due to gravity and lateral loads, by proper usage of Lateral Load Resisting System, approximate analysis and preliminary design. In the present study, the analysis of a 25 storey structure has been done to obtain an optimum mass ratio by using passive resistance. Then by using the optimum mass ratio obtained from the analysis of 25 storey structure, the analysis of 35 and 45-stories reinforced concrete tall buildings subjected to seismic loads has been done as per the IS codes of practice. Safety of the structure has been checked against allowable limits prescribed for joint displacements, base shear, interstorey drifts by implementing Tuned Mass Dampers (TMD). The behaviour of the building for an optimum mass ratio of Tuned Mass Damper with an increase in the height of building is found out.

Concrete is the most commonly used construction material which has been used in all type of civil engineering construction work. The concrete industry at present globally consumes 8 to 12 billion tones of natural aggregate annually. The huge consumption of natural aggregates at domestic and commercial construction will inevitably degraded the environment. Thus there is an urgent need to restrict the use of natural aggregates. Thus solution lies to use the recycled concrete aggregates into construction work. The aim of this study is to investigate the flexural behaviour of Recycled Aggregate Concrete. Many researches have been done in European countries and also of some Asian countries to investigate the mechanical properties of Recycled Concrete Aggregate, however approximately only 14% research has been done to study the structural behaviour of Recycled Concrete Aggregate. This study gains importance in view of the wide potential for demolished concrete to serve as a source of quality aggregate feed stock in a variety of structural and non-structural applications. This review study presents the impact of Recycled Concrete Aggregate, with different replacement ratios, on flexural strength. The review study yielded the following findings in regards to concrete structural properties:(1)Beams with RCA did experience greater mid span deflections under a service load and smaller cracking moments, (2) The flexural strength of the beams made with the Recycled Aggregate Concrete is lower than that of the concrete beams with natural aggregate; however the values are greater than the theoretical values (3) Also addition of some fibres in RCA, there is an improvement of almost all the structural properties of Concrete.

Globally, water scarcity is being witnessed at every corner of world irrespective of resource availability. The fresh water sources either surface or ground water resources are in constant peril owing to pollution, degradation and over exploitation. Judicious use and sustainable water conservation practices are the need of the hour. In an effort towards sustainability, an initiation has been taken up in Jawaharlal Nehru Technological University Hyderabad campus to recharge rainwater artificially into the aquifers. In the study area, five rainwater recharge structures with 9 injection wells at different locations were constructed for harvesting the rain water and recharging into the confined and unconfined aquifers. Apart from these, three Piezometers were drilled in the campus to study the groundwater level fluctuations due to artificial recharge. An attempt is made to monitor these injection wells. Physico-Chemical water quality parameters like pH, TDS, EC, Total Hardness, Chlorine, Fluorine, Nitrate, Sulphate, Calcium, Magnesium, Carbonates, Bicarbonates, Sodium and Potassium parameters were tested for samples collected from these injection wells. Spatial analysis has been developed in GIS environment from the results of physico-Chemical parameters and is compared with BIS: 105000, 1991 standards.