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DE PPT.pptx
- 1. . • CRUMB ROAD PAVMENT • Vivek Khatri (200120106503) • Vatsal Vadhiya (200120106508) • Sahil Prajapati (200120106509) • Jahnvi Meswania (200120106514) • Internal Guide : Prof. Sumedha Mahajan
- 2. CONTENT Introduction Uses Process (production) Needs Advantages and disadvantages Conclusion Video
- 3. INTRODUCTION • Crumb rubber is recycled rubber. • produced from automotive and truck scrap tires. • Hydrocarbon binder obtained through physical or chemical interaction of crumb rubber with bitumen and some specific additives.
- 4. Why crumb? • 2.75 million vehicles generate discarded tyres annually. • 30,000 – 40,000 tyres are scrapped every day. • Use of CRMB in maintenance of roads can consume 3500 kg/km of non-biodegradable waste rubber.
- 6. USES • Road Asphalt • Vibration Absorption Systems for Railway Structures • Modification of Concrete Properties • Road Speed Reducers • Solution for Stables • Floor Slabs • Playgrounds
- 7. International use of crumb • Being used in USA since 1960. • Currently Arizona, fluoride, Texas and California are using 2 millions of rubberized bitumen annually. • Very popular in Australia for chip sealing wearing course and structural layers. • Use of crumb is increasing in developing countries of Latin America.
- 8. Different grades of crumb Product description CRMB 60 For hot climate areas. CRMB 55 For moderate climate areas. CRMB 50 For cold climate areas.
- 9. PROCESS
- 10. NEEDS • Every year millions of tons of rubber waste are produce in India. Utilizing these materials in highway road construction, the pollution and disposal problems can be successfully be reduced. •This reduces the pollution occurred due to waste tyres as well as minimizes the use of natural aggregate, which help in reducing global warming as well as health problems. •Crum rubber is very suitable to be the used as an additive in pavement because it has the characteristic that can support the weakness of asphalt It not only enhances the properties of bitumen but also addresses serious environmental pollution issues.
- 11. ADVANTAGES • Higher resistance to deformations, wear and tear. • Reduced reflective cracking. • Lower susceptibility to temperature variations. • Higher fatigue life of mixes. • Better adhesion properties. • Reduced noise.
- 12. CONCLUSION • Crumb mixes indicate better resistance to deformation at higher temperature. • High indirect tensile stiffness modulus. • Superior resistance to moisture damage. • Take higher traffic stresses due to high stiffness modulus. • Provides 50% more service life than a normal bitumen road. • Reduction in road maintenance cost by 30%. • Enhances tyre rolling and save fuel by 10%. • More comfortable riding.
- 14. Future Plan • Collect Crumb Rubber through local Suppliers • Physical testing of Crumb Rubber. • Casting of Specimen without crumb rubber • Casting of Specimen by using Crumb Rubber (5%, 10% w/w of Natural Aggregates).