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PLASTIC ROAD

Plastic roads mainly use plastic carry bags, dispose cups 7 plastic bottles are collected as garbage dumps and its further used as important ingredient in construction material.
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INTRODUCTION: -

Plastics are waste materials that are non-degradable material (according to studies plastics stay unchanged for long 4500 years on earth) products are growing rapidly and the problem is that What to do with these plastic wastes? Proper damping plastics create lots of problems like breast cancer, reproductive problems in humans & animals. Many problems related to health arises due to these plastic wastes.

Now “CIVIL ENGINEERS” along with the “ENVIORNMENTALISTS” took the charge to improvise the use of these plastic wastes. We “THE CIVIL ENGINEERS” thought to protect the environment by utilizing this technology & also protect human’s and animal’s life by the reuse of plastics so as for construction processes. Thus lead to the invention of plastic roads.

plastic road engineerism

PLASTIC ROAD: -

Plastics used in road construction is not new. It is already used in road construction as P.V.C. (poly vinyl chloride) H.D.P.E. (high density poly ethylene) pipes to form plastics. Plastics are also used as a transition mats & crossing passages made of rubber tires. Uses of plastics in these things helps to increase its life time.

Plastic roads mainly use plastic carry bags, dispose cups 7 plastic bottles are collected as garbage dumps and its further used as important ingredient in construction material.

plastic road engineerism

Plastic Wastes used in process: -

The following types of waste plastic can be used in the construction of rural roads:

  • Films ( Carry Bags, Cups) thickness up to 60micron (PE, PP and PS)
  • Hard foams (PS) any thickness
  • Soft Foams (PE and PP) any thickness.
  • Laminated Plastics thickness up to 60 micron (Aluminum coated also) packing materials used for biscuits, chocolates, etc.,
  • Poly Vinyl Chloride (PVC) sheets or Flux sheets should not be used in any case.
plastic road engineerism

Process Step 1:

Plastics waste (bags,cups,thermocole) made out of PE,PP and PS cut into a size between 2.36mm and 4.75mm using shredding machine, (PVC waste should be eliminated).

Process Step 2(a):

The aggregate mix is heated to 165°c (as per the HRS specification) and transferred to mixing chamber.

Process Step 2(b):

Simillarly the bitumen is to be heated upto a maximum of 160°c (HRS Specification) to have good binding and to preovent weak bonding. (Monitoring the temperature is very important).

Process Step 3:

At the mixing chamber, the shredded plastics waste is to be added. It get coated uniformly over the aggregate within 30 to 60 seconds, giving an oily look.

Process Step 4:

The plastics waste coated aggregate is mixed with got bitumen and the resulted mix is used for road construction. The road laying temperature is between 110°c to 120°c. The roller used is 8-ton capacity.

plastic road engineerism

Overall Characteristics of the process: -

  • Easy process without any new machinery
  • Simple process without any industry involvement
  • In situ process
  • Use of lesser % of bitumen and thus savings on bitumen resource
  • Use of plastics waste for a safe and eco-friendly process
  • Both Mini Hot Mix Pland and Central Mixing Plant can be used
  • Only aggregate is polymer coated and bitumen is not modified
  • Use of 60/70 and 80/90 bitumen is possible
  • No evolution of any toxic gases like dioxin
  • Fly ash can also be used to give a better performance
plastic road engineerism

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