Articles

Plastic waste is generated from industrial as well as domestic sectors. Since plastic is non-biodegradable, the management of plastic wastes especially in urban areas are a major cause of concern in today s world. Mostly, the plastic waste comprises of poly ethylene, poly propylene, poly styrene. The softening point of these compounds varies from 1100 C to 1400 C and no harmful gases are produced. Softened plastic has got an unique property of forming a coating around aggregates. This aggregate coated with polymer (ACP) when mixed with different grades of heated bitumen can be used for the construction of flexible pavements, where plastic acts as a raw material. It makes highly durable pavements with nil pothole, waterproof and reduces the amount of bitumen required by up to 10 kgs by weight. This paper intends to present the various steps involved in the procedure of such plastic road construction, points to be cautious while using the plastic waste, ecological situations withstanding the steps. The strength of roads achieved can be 100 percent.

Construction waste is growing expeditiously with the dramatic increase in the number of demolitions of old constructions across the world. Therefore, it has led to social as well as environmental concern in recycling process of the construction waste. The material used extensively for construction across the world is concrete and mostly it has been incorporated in all kind of civil engineering works. Since, 70-80% of the concrete volume comprises of aggregates, it will be judicious enough to utilize the recycled aggregate again. Based on the report of researchers, it can be concluded that recycled aggregates from concrete is acceptable for non-structural construction works. In this paper, a comprehensive investigation has been conducted by testing of the properties of the recycled aggregates and studying the results. Basic properties such as compressive strength, flexural strength, Split tensile strength are explained here for different combinations of recycled aggregate with natural aggregate. Study has shown that the strength of concrete using partial proportion of recycled aggregates could reach substantially similar strength compared to concrete having freshly used natural aggregates. Substantially, prevailing status of recycled aggregate in India along with its need about the time ahead and its prosperous implementation are discussed here.