Date post: | 16-Jul-2015 |
Category: |
Engineering |
Upload: | bikash8280 |
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PLASTIC MODIFIED BITUMEN
ROADS
PRESENTED BY:
BIKASH MUDULI
DEPT. CIVIL ENGG
RAAJDHANI ENGINEERING
COLLEGE
GUIDED BY:
MR.MADAN MOHAN MOHAPATRA
HOD. CIVIL DEPARTMENT
RAAJDHANI ENGINEERING COLLEGE
CONTENTS
WHAT IS PLASTIC ?
TYPES OF PLASTIC ?
STEPS FOR USING PLASTIC IN ROADS
ON SITE EXECUTION
ADVANTAGES AND DISADVANTAGES OF PLASTIC ROADS
CONCLUSION
WHAT IS PLASTIC
A PLASTIC MATERIAL IS ANY OF A WIDE RANGE OF SYNTHETIC OR SEMI-
SYNTHETIC ORGANIC SOLIDS THAT ARE MALLEABLE.
THEY ARE USUALLY SYNTHETIC, MOST COMMONLY DERIVED FROM
PETROCHEMICALS.
SEGREGATIO
N
PLASTIC WASTE COLLECTED FROM VARIOUS SOURCES MUST BE SEPARATED
FROM OTHER WASTE.
MAXIMUM THICKNESS OF 60 MICRONS.
SHREDDING PROCESS
PLASTICS WILL BE SHREDDED OR CUT INTO SMALL PIECES.
THE DIFFERENT TYPES OF PLASTIC WASTES ARE MIXED TOGETHER.
WET PROCESS
BLENDING OF WASTE PLASTICS BY DIRECT MIXING OF SHREDDED PLASTICS WITH HOT BITUMEN AT 160°C.
MECHANICAL STIRRER IS NEEDED AS THE MIXING IS DIFFICULT BECAUSE OF DIFFERENCE IN VISCOSITIES OF MOLTEN POLYMER AND BITUMEN.
ADDITION OF STABILIZERS AND PROPER COOLING ARE REQUIRED.
SINCE THE WET PROCESS REQUIRE A LOT OF INVESTMENT AND BIGGER PLANTS.
NOT COMMONLY USED.
DRY
PROCES
S
THIS PROCESS IS DEVELOPED BY
prof. R.VASUDEVAN.
HE IS THE DEAN OF DEPT. OF CHEMISTRY IN
THIAGARAJAR COLLEGE OF
ENGINEERING.
THE AGGREGATE IS HEATED UP TO 170°C IN THE MINI HOT MIX PLANT.
MINI HOT MIX PLANTAGGREGATE TRANSFERRED TO
PUDDLING CHAMBER
THE SHREDDED PLASTICS IS ADDED TO THE HOT AGGREGATE IN EQUAL
PROPORTION.
WASTE PLASTICS MIXED WITH THE HOT AGGREGATES
IMMIDIATELY THE HOT BITUMEN WITH 160°C IS ADDED WITH THE MIXTURE.
BEFORE BITUMEN MIXBITUMEN IS ADDED WITH
COATED AGGREGATE
CHARACTERISTIC OF PLASTIC COATED
AGGREGATE
LOS ANGEL’S ABRASION TEST –
WEAR AND TEAR VALUES OF PLASTIC COATED AGGREGATE IF FOUND
TO BE DECREASING WHILE USING PLASTICS.
EG. 37% WITHOUT PLASTIC, 32% WITH 1% PLASTIC, 29% WITH 2%
PLASTIC.
SOUNDNESS TEST-
THE PLASTIC COATED AGGREGATE, DID NOT SHOW ANY WEIGHT
LOSS, HENCE IMPROVE THE QUALITY OF THE AGGREGATE.
Aggregate Impact Value
Plastics Improves Aggregate Impact Value.
Helps To Improve The Quality Of Flexible Pavement
Aggregate impact value
% of plastic coating over
aggregate
Compressive strength
(MPa)
Bending strength
(MPa)
10% 250 325
20% 270 335
30% 290 350
40% 320 390
BINDING PROPERTY
ADVANTAGES OF PLASTIC ROAD
SIMPLE PROCESS, NO NEW MECHINARY IS REQUIRED.
USE HIGHER PERCENTAGE OF PLASTIC WASTE.
REDUSE THE NEED OF THE BITUMEN BY AROUND 10%.
INCREASE THE STRENGTH AND PERFORMANCE OF THE ROAD.
REDUSE THE COST AROUND Rs.5000/KM OF SINGLE LANE ROAD.
GENERATE JOBS FOR RAG PICKERS.
UP TO 10,00,000 CARRY BAGS DISSAPEARED IN ONLY 10Mtr.
NO POT HOLES.
DISADVANTAGES
TOXICS PRESENT IN THE PLASTICS WOULD START LEACHING AFTER SOME
YEARS.
ONCE THE ROAD STARTED TO USE,IT WILL REALESE THE FINE PARTCELS OF
POLYMER.