Use of Waste Plastic and Waste Rubber in Aggregate and Bitumen for Road Materials
Many roads agencies have been experiencing problem of premature failure of pavements like potholes, roughness, cracks and etc. which leads to poor performance of roads and its life. On the other hand, plastics, rubbers, etc. are increasing day by day. Waste like plastic bottles, polymers, cups, waste tyre's can be re-used by powdering or blending it with crusher's and can be coated over aggregate and bitumen by any heating process. In this study we have used polymer and crumbed rubber as a binder with respect to aggregate and bitumen. In bituminous roads, we use materials like aggregate (of various sizes), grit and bitumen. The various tests are conducted during this study on aggregates such as crushing value, impact value, abrasion value, and specific gravity and also on bitumen penetration value, ductility, softening point. The results are discussed in this paper.
An Experimental studies on Waste plastic coated AggregateBitumen Matrix
Waste plastic generation in India has increased many folds in last few decades, plastic generation is one big problem but its post processing that its disposal is even bigger. Plastic being cheap and durable remains people’s first choice as compared to other materials that are used for packing, storing and other purposes but plastic being non – biodegradable remains in environment continues to be in it for thousands of years these plastics get incorporated in ecosystem and have adverse effect on human, animals, plants and other species. Many types and forms of plastic pollution exists, plastic pollution adversely affects lands, waterways and oceans. Therefore it is necessary to utilize the waste effectively with technical development in different fields, many by products are being produces in each field. Our work on above mentioned topic is also an alternative method for effectively utilizing waste plastic in coating of aggregates that are to be used for pavement construction aimed towards improving the properties of aggregates and pavement characteristics and also on other hand seek possibility of utilizing lower quality of aggregate in construction of bitumen pavement wherever there is unavailability of good quality of aggregate. Our work will discuss in details the process and application. Keyword:Non – biodegradable; bitumen pavement; aggregates; plastic pollution; ecosystem. I.INTRODUCTION A material that contains one or more organic polymers of large molecular weight, solid in its finished state and at some state while manufacturing or processing into finished articles, can be shaped by its flow, is called as ‘Plastic’. Plastics are durable and degrade very slowly; the chemical bonds that make plastic so durable make it equally resistant to natural processes of degradation. Plastics can be divided into two major categories: Thermoset and Thermoplastics. A thermoset solidifies or ‘‘sets’’ irreversibly when heated. They are useful for their durability and strength, and are therefore used primarily in automobiles and construction applications. These plastics are polyethylene, polypropylene, polyamide, polyoxymethylene, terephthalate. A thermoplastic
Nanoscale particles for polymer degradation and stabilization—Trends and future perspectives
Abstract The field of nanoscience and nanotechnology is extending the applications of physics, chemistry, biology, engineering and technology into previously unapproached infinitesimal length scales. The polymer–nanoparticles/nanocomposites have been the exponentially growing field of research for developing the materials in last few decades and have been mainly focusing on the structure–property relationships and their development. Since the polymer–nanocomposites have been the staple of modern polymer industry, their durability under various environmental conditions and degradability after their service life are also essential fields of research. Thus, this article is intended to review the status of worldwide research in this aspect. Among various nanoparticulates, clay minerals and carbon nanotubes are more often used in enhancing physical, mechanical and thermal properties of polymers. In very few systems, the nanoparticulates have been incorporated into polymer as ‘ nano-additives ’ for both purposes: degradation and stabilization of polymers. The degradation and durability of polymers is reviewed in the presence of nanoparticles/nanocomposites under different environmental conditions. Nanoparticle-induced biodegradation of polymers is also discussed.