A seminar on design of interlocking pavement

A seminar ondesign of interlocking concrete block pavementPRESENTED BY :RAMESH KUMARROLL NO 130110034CIVIL ENGINEERING FINAL YEAR

contentsINTRODUCTIONTYPES OF CONCRETE BLOCKCOMPOSITION OF THE CONCRETE BLOCK PAVEMENTPATTERN OF LAYING OF BLOCKMETHODS OF LAYING OF CONCRETE BLOCKSAPPLICATION OF INTERLOCKING CONCRETE BLOCK PAVEMENTADVANTAGES AND LIMITATIONSCONCLUSIONREFERENCES

introductionConcrete paver blocks were first introduced in the Holland and it was just like brick.Interlocking concrete paver is a brick like piece of concrete commonly used as exterior flooring.Interlocking concrete pavement consist of surface layer of small element, solid pre-cast concrete pave block laid on a thin compacted bedding material which is constructed over a properly profiled base course.

concrete paver

Interlocking concrete block pavement have been extensively used in a number of countries for quiet sometimes and give excellent performance when applied at the location.

Type A: Paver blocks with plain vertical faces, which do not key into each other when paved in any pattern.

Type B: Paver blocks with alternating plain and curved vertical faces, which key into each other along the curve faces, when paved in any pattern

types of concrete block

Type C: Paver blocks having all faces curved, which key into each other along all the vertical faces when paved in any pattern.

Type D: 'L' and 'X' shaped paver blocks which have all faces curved and which key into each other along all the vertical faces when paved in any pattern.

Composition of the block pavement FOR NON-TRAFFIC PAVEMENT : Such as side walk, footpath, cycle track, public garden/park, Railway platform, building premises etc.M-25 or M-30 Grade used for Paver Block.

60 mm Thick Blocks

20-30 mm Sand Bed

200 mm Base Layer

Compacted Earth

FOR LIGHT TRAFFIC PAVEMENT : Such as car parking, housing colony road, rural road, residential colony road, form houses etc.M-30 or M-35 Grade used for Paver Block

60-80 mm Thick Block

20-40 mm Sand Bed

250 mm Base Layer

250 mm Sub-Base Layer

FOR MEDIUM TRAFFIC PAVEMENT : Such as city streets, small market road, service station, intersection on low volume road etc.M-35 to M-45 Grade is used for Paver Block.

80-100 mm Thick Block

20-40 mm Sand Layer

250 mm Base Layer

250 mm Granular Sub-Base

FOR HEAVY TRAFFIC PAVEMENT : Such as bus terminals, industrial streets, factory floor and pavement, airport pavement etc.M-45 to M-55 Grade is used for Paver Block.

100-120 mm Thick Block30-50 mm Sand Bed300 mm Granular Sub-Base300 mm Base Layer

Pattern of laying OF blockSTRETCHER BOND OR RUNNING BOND : A stretcher is block laid flat with its long narrow side exposed and Running bond is consisting of all stretchers

HERRINGBONE BOND : A herringbone pattern can be created by setting the blocks at either 45 degrees or 90 degrees to the perpendicular.

BASKET WEAVE OR PARQUET BOND : It consists of multiple horizontal blocks and vertical blocks, resulting in a square pattern associated with woven baskets.

METHODS OF LAYING OF CONCRETE BLOCK MANUAL METHOD : In the traditional manual method, the sand is roughly screeded and a skilled worker (called a pavior) levels the sand and then embeds the block using a hammer.

MECHANICAL METHOD : Mechanical laying requires the use of specialised equipment for transporting and placing clusters of paving blocks.Mechanised laying must be coordinated with the manufacturer, so that the blocks are delivered stacked on pallets in the required pattern

Application of interlocking concrete block pavementFootpath and side-walksPublic parking areaCycle trackResidential streetsCar parkingHighway rest areasCity streetsIndustrial floor

Advantage and limitation of interlocking concrete block pavementADVANTAGES :Highly Durable.Not much Required Curing.Not affected by thermal expansion or contraction.Cheap in comparison to Rigid pavement.Maintenance is easy and simple.LIMITATIONS :Not suited for higher speed.Requires joint filling material sand.Care need to be taken to fix the blocks.

conclusionICBP technology can provide durable and sustainable road infrastructure where construction and maintenance of conventional pavements are not cost effective.ICBP is much cheaper than rigid (concrete) pavement designed for identical conditions. Guidelines for use of Interlocking Concrete Block Pavement and Specification on Paver Blocks are published in Codes and available with Indian Roads Congress and Bureau of Indian Standards which are very useful for Indian industries and highway professions for adoption of block pavement technology.

referencesIRC:SP:063-2004IRC:37-2012www.nbmcw.com/concrete/4993-interlocking-concrete-paver-blocks.https://en.wikipedia.org/wiki/Pavement_(architecture)#Paver Khanna S.K, Justo C.E.G, Veeraragavan A - Highway Engineering - 10th-Edition published by Nem Chand &Bros.

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