Design of highway (Flexible pavement)

Post on 07-Jan-2017

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Buddha Institute of TechnologyGroup Members-Raj Kumar GuptaVikash SinghSujoy Kumar VidyantaShivakantRishabh Kumar SrivastavaUtkarsh Kumar Tripathi

Project Guide-Prof. ALAK ROY

IntroductionA hard smooth surface or layer that forms a road carriageway, airfield runway, vehicle park or other paved areas.

Types of PavementFlexible Pavement Rigid Pavement

Flexible Pavement Design

Wheel Load Transfer

Flexible Pavement ConstructionBase and Subgrade PreparationPavement Surface PreparationPlacementCompaction

TestingBitumen TestingAggregate TestingSoil Testing

Aggregate TestAggregate Impact ValueAggregate Abrasion ValueAggregate Crushing Value

Aggregate Impact Value- Passing through 12.5mm IS Sieve

– 100%- Retention on 10mm IS Sieve –

100%The sample should be oven-dried

for 4hrsAggregate impact value = (B/A) x

100%

Aggregate Abrasion ValueAggregate abrasion

value = (A-B)/B x 100%.

Soil TestDetermine The Maximum Dry Density And The

Optimum Moisture Content Of SoilDetermining Water Content In Soil - Oven Drying

MethodDetermine The Specific Gravity Of Soil

Determining Water Content In SoilOven Drying Method

W1=container weightW2=wet soil specimen in the containerW3=container with the dry soil sampleThe water content

w = [W2-W3] / [W3 -W1]*100%

Bitumen TestDetermining the Ductility Of BitumenDetermining Penetration of BitumenDetermining Flash And Fire Point Of Bitumen

Determining the Ductility Of Bitumen

Type of Flexible PavementBitumen Polymer Modified Bitumen

WASTE PLASTIC:

Waste plastic in the shredded form are used.

WASTE PLASTIC:

Waste plastic in the shredded form are used.

WASTE PLASTIC:

Difference Between Flexible and Rigid Pavement

Flexible pavement Rigid Pavement

Load is transfer by grain to grain. Low strength. Low life Span. High maintenance cost. Rolling of surface is needed. Damaged by oils and certain

chemicals.

Load transfer is not exists. High strength. Life span is more. Low Maintenance cost. Rolling of surface is not needed. No damage by oils and greases.

AdvantageFlexible Rigid

Repair of flexible pavement is easy.

Additional thickness added any time.

The flexible pavement is smooth.

Tolerates a great range of temperature.

Durability of rigid pavement is good.

Life cycle of rigid pavement is long.

Withstand repeated flooding and surface water.

DisadvantagesFlexible RigidLoses some flexibility and

cohesion with time.Needs resurfacing sooner

then PC concrete.Not normally chosen where

water is expected.The life of flexible pavement

is short.The maintenance cost is high

May lose skid surface with time.

May fault at transverse joints.

Thank You