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.
Effect of Waste Materials on Bituminous Mix Properties
xi CHAPTER 1 1 INRODUCTION 1-2 1.1 General 1 1.2 Bitumen 1 CHAPTER 2 3 LITERATURE REVIEW 3-28 2.1General 14 2.2 Literature review study 14 2.3 Research Objectives 17 CHAPTER 3 18-24 METHODOLOGY 18 3.1 General 18 3.2 Methodology flow chart 18 3.5 Methods for testing samples or construction of roads 21 3.6 Test conducted on bitumen with different waste by using wet process 23 3.7 Material used for sample preparation. 24 3.8 Sample preparation 24 CHAPTER 4. 25-53 RESULTS ANALYSIS 25 4.1 General 25 4.2 Test result of bitumen with waste LDPE 25 4.2.1 Penetration test result of bituminous mix with waste LDPE 25 4.2.2 Ductility test result of bitumen with waste LDPE 26 4.2.3 Softening point test result of bitumen with waste LDPE 28 4.2.4 Specific gravity test result of bitumen with waste LDPE 29
Utilization of Waste Polymers for Flexible Pavement and Easy Disposal of Waste Polymers
Solid waste management is the thrust area. Of this various waste materials, plastic waste, and municipal solid waste are of great concern. Use of disposed plastics waste is the need of the hour. On the other side, the road traffic is increasing. The traffic intensity is increasing. The load bearing capacities of the road are to be increased. The studies on the improvement of road strength using polymer modified bitumen (PMB) for flexible pavement are being carried out by different schools. Virgin and recycled polymers are being used for these studies. But when higher percentage of plastics waste was used, the polymer got separated from the blend. Hence a new innovative technique was developed by the author and the heated stone aggregate was first coated with plastics generated from wastes like carry bags, films, foams, and multi layers and the plastics waste coated aggregate (PCA) was used as the raw material for flexible pavement. PCA is then mixed with 60/70 or 80/100 bitumen and the mix is used for road construction. PCA + Bitumen mix showed better binding property. It had less wetting property. Its voids were much less. The sample showed higher Marshall Stability value. By this process a road of 1km length and 3.75m width of single lane can consumes 10,00,000 carry bags and the road strength is increased by 100% and there is no pothole formation. The roads laid using PCA + Bitumen mixes are performing well. Performance studies were carried out for plastic road of different ages and reported in this paper.