15-02-2013, 03:52 PM
UTILISATION OF WASTE PLASTICS IN BITUMINOUS MIXES FOR ROAD CONSTRUCTION
INTRODUCTION
POTENTIAL REASONS TO USE ECONOMICAL ALTERNATIVE MATERIALS IN AN ECO-FRIENDLY WAY
PLASTIC WASTE SCENARIO
DIFFERENT TYPES OF WASTE PLASTICS(POLYMERS) & THEIR ORIGIN
CAUSES OF USING WASTE PLASTICS IN ROAD CONSTRUCTION
CONCEPT OF UTILISATION OF WASTE PLASTIC IN BITUMINOUS MIXES FOR ROAD CONSTRUCTION
GUIDELINES FOR USE OF PLASTIC WASTE IN ROADS CONSTRUCTION
CHARACTERISTICS OF PLASTIC WASTE
CONSTRUCTION OF FLEXIBLE PAVEMENTS USING WASTE PLASTICS BITUMEN BLEND MIX
1. Materials Used
2. Processing Details
3. Salient Features Of The Process
METHODOLOGIES
a. MIX DESIGN BY MARSHALL METHOD
b. PERFORMANCE STUDIES OF WASTE PLASTICS
BITUMINOUS MIX & PLAIN BITUMEN MIX
c. RESULTS & DISCUSSION
ADVANTAGE OF WASTE PLASTIC BITUMINOUS MIX
BENEFITS OF WASTE PLASTIC ROADS
CASE STUDY ON ROAD CONSTRUCTION USING PLASTIC WASTES IN INDIA
OTHER CASES OF PLASTIC ROADS CONSTRUCTION IN INDIA.
CONCLUSION
REFERENCES
INTRODUCTION
Roadways are a central component of the nation’s infrastructure and present a wide array of opportunities forusing industrial materials. With the advancements in the field of road construction technology, the construction of rehabilitated roads, which support environment providing long durability to road infrastructure, is required utilizing alternative materials, industrial and construction wastes and by products, facilitating road travel, travelers comfort and safety together with cost effectiveness and sustainable development.
Go green movement is gaining strength with increased global warming and climate changes. Going green in transportation projects implies environment friendly construction of roads with the availability of alternative materials and the unique question of disposal of non-decaying waste posing a problem for environmental protection.
With increased industrialization and growth of population with increasing quantities of waste world over together with increased demand for traditional road construction materialssuch as bitumen, cement, aggregate etc, the question is of sustainable development. With advances in science and technology, the use of non-decaying materials such as Plastic, Blast furnace slag, Fly ash, Scrap tyres, Mine wastes, Marbledust etc, offer an economically viable and sustainable alternative towards increasing demand for better road construction.
In this way these materials can be utilized in an eco friendly way, providing solutions to their disposal with a commitment towards development of infrastructure and accountability towards the society at large.
POTENTIAL REASONS TO USE ECONOMICAL ALTERNATIVE MATERIALS IN AN ECO-FRIENDLY WAY
Increased global warming and climate changes.
The problem of creation and disposal of nondecomposing materials.
Increased demand for infrastructures like road with increase in population.
Limited natural resources for road construction.
Depletion of good quality material for road construction.
Increased cost and a question of cost effectiveness.
Adverse environmental impacts.
Protection of environment with the use of alternative material.
Reduction in construction time and enhancement in economic feasibility.
PLASTIC WASTE SCENARIO
Plastic is everywhere in today’s lifestyle. It is used for packaging, protecting, serving, and even disposing of all kinds of consumer goods. With the industrial revolution, mass production of goods started and plastic seemed to be a cheaper and effective raw material.
Today, every vital sector of the economy starting from agriculture to packaging, automobile, building construction, communication or infotech has been virtually revolutionised by the applications of plastics.
The consumption of plastics have increased from 4000 tons/annum (1990) to 4 million tons/annum (2001) and it is expected to rise 12 million tons/annum during the year 2012. Nearly 50 to 60% of the total plastics are consumed for packing.
Once used plastic materials are thrown out.They do not undergo bio-decomposition. Hence, they are either land filled or incinerated. Both are not ecofriendly processes as they pollute the land and the air. The hazards of waste plastics include- air pollution associated with open burning of tyres (particulates, odour, visual impacts, and other harmful contaminants such as polycyclic aromatic hydrocarbon, dioxin, furans and oxides of nitrogen), aesthetic pollution caused by waste plastic stockpiles and illegal waste tyre collecting and other impacts such as alterations in hydrological regimes when gullies and watercourses become waste sites.