Pond ash is a by-product obtained from Thermal Power Plants due to burning of coal. It is a mixture of Fly ash and bottom ash which is deposited in slurry form in ash ponds. India’s electricity demands are met through Power plants of which most are coal based. Based on some estimation 73 % power plants are coal based from which huge tonnes of Pond ash are generated every year. Disposal of these waste products is a big nuisance and poses threat to environment. Disposal in Pond ash in ash ponds not only causes loss of agricultural land which could provide food to human and animal race, it also renders the land unfit for future use. Because of large amount of Pond ash generation, large amount of land is increasingly being used for its diposal which is posing serious threat to food security. Hence the need of the hour is to look for alternative ways to utilise this by product. The present study is based on the effective utilisation of Pond ash in geotechnical field and its replacement as conventional earth material. The geotechnical characteristics of compacted Pond ash were evaluated using Polypropylene fibres. Polypropylene fibres of 6 mm, 12 mm and 19 mm length were used in 0.5 %, 1 % and 1.5 % of dry weight of Pond ash and their effect on strength characteristics of Pond ash were studied. The effect of fibre reinforcement on compacted density was studies using heavy compaction test. The stress strain behaviour of Pond ash using triaxial tests (unconsolidated undrained) was performed. The results showed increase in ductility of pond ash due to fibre inclusion and also increase in peak deviator stress. Higher strength were obtained in 19 mm fibres but keeping the economical and ease of handling issues in mind 12 mm fibres showed encouraging results. It can be safely concluded that Pond ash can replace conventional earth materials.

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As we know that concrete is the main construction material across the world and the mostly used in all types of civil engineering works. This topic is beneficial to use different additives so it will be beneficial as well as solve many environmental problems. To minimize the carbon emission and improve the strength of concrete for specific type of uses this thesis is prepared. As rapid construction activities all over the world rapidly increase the construction cost and carbon emission which ultimately causes the exploitation of natural resources. So by indentifying different additives we conserve the material and ultimately reduces the cost of construction. As aggregate represents about 70-80% of concrete components so it will be beneficial to recycle the aggregate for construction works and also to solve the environmental problems. To minimize the problem of excess of waste material it is a good step to utilize the recycled aggregates provides that the desired final product will meet the standards. The constructions industry new building materials with improved properties are required for satisfying the new utilization domains for modern construction or for repair works. The application of polymer on concrete has significantly progressed in the last 30 years. Polymers are either incorporated in a cement-aggregate mix or used as single binder. The composites made by using polymer along with cement and aggregates are called polymer-modified mortar or polymer-modified concrete, while composites made with polymer and aggregates are called polymer mortar or polymer concrete, depending on the maximum size of aggregate granule. Due to sustained pressure of industrial and developmental activities, there are appreciable disturbances in the ecological balance of nature. As with most large manufacturing industries, by-product materials are generated. These industrial by-product and waste materials must be managed responsibly to insure a clean and safe environment. The concept of environmental geo-techniques has emerged as an answer to the need to understand the ecological problems, connected with Fly ash, CKD, Quarry fines, Silica fines. Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the gases. In an industrial context, fly ash usually refers to ash produced during combustion of coal. It is having a fineness of about 4000-8000 cm2 /g. Fly ash is generally captured by electrostatic precipitators or other particle filtration equipment’s before the flue gases reach the chimneys of coal-fired power plants Depending upon the source and makeup of the coal being burned, the components of fly ash vary considerably. Cement manufacturing is a critically important industry in the world worldwide production accounted for about 2.5 billion metric tons. Over the past several years dramatic advances have been achieved in the management and use of cement kiln dust, thus reducing its dependency on landfill disposal. Sustainability is the cornerstone of the cement industry, not only in the products that use cement, but also in its manufacturing process. In 2005, 216 million tonnes of saleable aggregate was produced; corresponding 55 million tonnes of quarry fines and 24 million tonnes of quarry waste were also produced. The need to minimize fines production is driven by the Aggregates Levy (which has priced quarry fines out of the market in favour ofrecycled aggregate) and the Landfill Tax (which has made it expensive to dispose of fines). Future developments are likely to be driven by the need to respond to climate change .New crusher designs will be more automated, offer improved energy efficiency, have a greater production capacity and improved reliability.

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Now a day's cloud computing is used in many areas like industry, military, colleges etc to storing huge amount of data. We can retrieve data from cloud on request of user. To store data on cloud we have to face many issues. To provide the solution to these issues there are n number of ways. The proposed model is liable to meet the required security needs of data center of cloud. AES, DES and RSA are used for the encryption of file slices takes minimum time and has maximum throughput for encryption and decryption from other symmetric algorithms. The idea of splitting and merging adds on to meet the principle of data security. The hybrid approach when deployed in cloud environment makes the remote server more secure and thus, helps the cloud providers to fetch more trust of their users. For data security and privacy protection issues, the fundamental challenge of separation of sensitive data and access control is fulfilled. Cryptography technique translates original data into unreadable form. Cryptography technique is divided into symmetric key cryptography and public key cryptography. This technique uses keys for translate data into unreadable form. So only authorized person can access data from cloud server. Cipher text data is visible for all people.

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