This document provides information about a project on pervious concrete. It discusses the need for pervious concrete to address issues caused by impervious surfaces like parking lots and driveways. It then lists the members of the project and provides details on the objectives, which are to determine how material proportions affect the engineering properties of pervious concrete, including porosity and compressive strength. The document gives background on pervious concrete and discusses its properties in both fresh and hardened states. It also provides a schedule for the project and information on typical material proportions used in pervious concrete.

1. PROJECT ON PERVIOUSPROJECT ON PERVIOUS
CONCRETECONCRETE

2. MY BATCHMY BATCH
PROJECTGUIDEPROJECTGUIDE
N.SRI KANTHN.SRI KANTH
MEMBERS
V.SHIVA PRAKASH(10016T0033)
N.MANOHAR (10016T0031)
B. RAHUL (10016T0054)
K.RAJESH (10016T0052)

3. NEED OF PERVIOUS CONCRETENEED OF PERVIOUS CONCRETE
 A large amount of rain water ends up falling onA large amount of rain water ends up falling on
impervious surfaces such as parking lots, drive ways,impervious surfaces such as parking lots, drive ways,
sidewalks, ad streets rather than soaking into the soil.sidewalks, ad streets rather than soaking into the soil.
 This creates an imbalance to the natural ecosystem andThis creates an imbalance to the natural ecosystem and
leads to a host of problems including erosion, floods,leads to a host of problems including erosion, floods,
ground water level depletion and pollution of rivers, lakesground water level depletion and pollution of rivers, lakes
etc..etc..
 A simple solution to avoid these problems is to stopA simple solution to avoid these problems is to stop
constructing impervious surfaces that block natural waterconstructing impervious surfaces that block natural water
infiltration into the soil.infiltration into the soil.

4. 
InsteadInstead of constructing them with conventional concreteof constructing them with conventional concrete
or asphalt, we should be switching to pervious concreteor asphalt, we should be switching to pervious concrete
or porous pavement.or porous pavement.
 Pervious concrete also naturally filters water from rainfallPervious concrete also naturally filters water from rainfall
or storm and can reduce pollutant loads entering intoor storm and can reduce pollutant loads entering into
streams, ponds and rivers.so in this way it helps instreams, ponds and rivers.so in this way it helps in
ground water recharge.ground water recharge.

5. COMPARISION OF PERVIOUS ANDCOMPARISION OF PERVIOUS AND
IMPERVIOUS CONCRETEIMPERVIOUS CONCRETE
PERVIOUS CONCRETEPERVIOUS CONCRETE
IMPERVIOUSIMPERVIOUS
CONCRETECONCRETE

6. BRIEF ABSTRACTBRIEF ABSTRACT
 Pervious concrete is also called as no fines concrete.Pervious concrete is also called as no fines concrete.
The permeability and strength of pervious concreteThe permeability and strength of pervious concrete
depends on the particle sizes and proportions of thedepends on the particle sizes and proportions of the
constituent materials of which the concrete is made of.constituent materials of which the concrete is made of.
This project describes about the effect of size ofThis project describes about the effect of size of
aggregates and proportions of cement, aggregates,aggregates and proportions of cement, aggregates,
admixtures and water on porosity.admixtures and water on porosity.

7. AIM AND OBJECTIVEAIM AND OBJECTIVE
 To determine the effect of material proportionsTo determine the effect of material proportions
on the engineering properties of the perviouson the engineering properties of the pervious
concreteconcrete
 The main objective is to investigate theThe main objective is to investigate the
performance characteristics of the perviousperformance characteristics of the pervious
concrete such as porosity, compressiveconcrete such as porosity, compressive
strength, infiltration rate etc…strength, infiltration rate etc…

8. INTRODUCTION
 Pervious concretePervious concrete is a special type of concrete with a highis a special type of concrete with a high
porosity used for concrete flatwork applications.porosity used for concrete flatwork applications.
 It allows water from precipitation and other sources to passIt allows water from precipitation and other sources to pass
directly through, thereby reducing the runoff from a site anddirectly through, thereby reducing the runoff from a site and
allowing groundwater recharge.allowing groundwater recharge.
 It is also known as gap graded concreteIt is also known as gap graded concrete or permeable
concrete.

9.  Pervious concrete has little or no fine aggregate.Pervious concrete has little or no fine aggregate.
 It has just enough cementitious paste to coat the coarseIt has just enough cementitious paste to coat the coarse
aggregate particles while preserving the interconnectivity ofaggregate particles while preserving the interconnectivity of
the voids.the voids.
 Pervious concrete is traditionally used in parking areas, areasPervious concrete is traditionally used in parking areas, areas
with light traffic, pedestrian walkways, and greenhouses andwith light traffic, pedestrian walkways, and greenhouses and
contributes to sustainable construction.contributes to sustainable construction.
 It consists of 15 to 35% voids, allowing for quick drainage.
 The infiltration rate of pervious concrete will fall into the range
of 80 to 720 liters per minute per square meter.

11. LITERATURE REVIEWLITERATURE REVIEW
 INDIAN CONCRETE JOURNAL,(INDIAN CONCRETE JOURNAL,(AUGUST 2010)AUGUST 2010)
PERVIOUS CONCRETE –AN OVERVIEW BYPERVIOUS CONCRETE –AN OVERVIEW BY
KARTHIK H.OBLA(PH.D IN CIVIL ENGG.)KARTHIK H.OBLA(PH.D IN CIVIL ENGG.)
 INTERNATIONAL JOURNAL OF ENGINEERING ANDINTERNATIONAL JOURNAL OF ENGINEERING AND
TECHNOLOGY(VOL.2 NO.5,MAY,2012)TECHNOLOGY(VOL.2 NO.5,MAY,2012)
EVALUATION OF STRUCTURAL PERFORMANCE OFEVALUATION OF STRUCTURAL PERFORMANCE OF
PERVIOUS CONCRETE IN CONSTRUCTIONPERVIOUS CONCRETE IN CONSTRUCTION
S.O.AJAMU,A.A.JIMOH AND J.R.OLUREMIS.O.AJAMU,A.A.JIMOH AND J.R.OLUREMI

12. HISTORY OF PERVIOUS CONCRETEHISTORY OF PERVIOUS CONCRETE
 Pervious Concrete was first used in 1852.Pervious Concrete was first used in 1852.
 Pervious concrete has been employed in European countriesPervious concrete has been employed in European countries
since the nineteenth century.since the nineteenth century.
 The earliest usage of pervious concrete in modern history wasThe earliest usage of pervious concrete in modern history was
for two houses in England. Over 900 houses were built fromfor two houses in England. Over 900 houses were built from
1942.1942.
 Most houses using pervious concrete are in the UnitedMost houses using pervious concrete are in the United
Kingdom (ACI 522 Pervious Concrete, 2006).Kingdom (ACI 522 Pervious Concrete, 2006).

13. SCHEDULING OF PROJECTSCHEDULING OF PROJECT
S.NO MONTHS WORK SCHEDULED
01. AUGUST Collection of literature
02. September to
November
Procurement of materials and
casting
03. December and
January
Casting and testing of cubes
04. February and
march
Analysis of the results
obtained

14. MATERIALSMATERIALS
 Pervious concrete mainly consists of:Pervious concrete mainly consists of:
 Ordinary Portland cementOrdinary Portland cement
 Coarse aggregate (19mm – 9.5mm)Coarse aggregate (19mm – 9.5mm)
 Water (Free from salts and impurities)Water (Free from salts and impurities)
 In normal concrete the fine aggregates typically fills the voidsIn normal concrete the fine aggregates typically fills the voids
between the coarse aggregates.between the coarse aggregates.
 In pervious concrete fine aggregate is non-existent or presentIn pervious concrete fine aggregate is non-existent or present
in very small amounts (<10% by total weight of aggregates).in very small amounts (<10% by total weight of aggregates).

15.  Supplementary cementitious materials (SCMs) such asSupplementary cementitious materials (SCMs) such as
Flyash, pozzolonas and blast-furnace slag also are used.Flyash, pozzolonas and blast-furnace slag also are used.
 These added materials will affect the performance, settingThese added materials will affect the performance, setting
time, strength, porosity, and permeability of the final product.time, strength, porosity, and permeability of the final product.
 The overall durability of the pervious concrete is increasedThe overall durability of the pervious concrete is increased
with the use of flyash, pozzolonas and blast-furnace slag duewith the use of flyash, pozzolonas and blast-furnace slag due
to decrease in permeability and cracking.to decrease in permeability and cracking.
 Since pervious concrete has low workability, retardingSince pervious concrete has low workability, retarding
admixtures or hydration stabilizing admixtures are useful.admixtures or hydration stabilizing admixtures are useful.

16. The National Ready-Mix Concrete Association provides theThe National Ready-Mix Concrete Association provides the
following chart of typical Ranges of Materials Proportions infollowing chart of typical Ranges of Materials Proportions in
Pervious Concrete.Pervious Concrete.
MATERIALMATERIAL PROPORTIONSPROPORTIONS
Cementitious materialsCementitious materials 270 to 415270 to 415 Kg/m3Kg/m3
AggregateAggregate 1190 to 14801190 to 1480 Kg/m3Kg/m3
Water: Cement ratioWater: Cement ratio
(by mass)(by mass)
0.27 to 0.340.27 to 0.34
Aggregate: cement ratioAggregate: cement ratio
(by mass)(by mass)
4 to 4.5:14 to 4.5:1
Fine: coarse aggregateFine: coarse aggregate
ratioratio
(by mass)(by mass)
0 to 1:10 to 1:1

17. PROPERTIES OF PERVIOUSPROPERTIES OF PERVIOUS
CONCRETE:CONCRETE:
Fresh Properties:Fresh Properties:
 The plastic pervious concrete mixture is stiff compared toThe plastic pervious concrete mixture is stiff compared to
traditional concrete.traditional concrete.
 Slumps, when measured, are generally less than ¾ inchesSlumps, when measured, are generally less than ¾ inches
(20 mm), although slumps as high as 2 inches (50 mm)(20 mm), although slumps as high as 2 inches (50 mm)
have been used.have been used.
 However, slump of pervious concrete has no correlationHowever, slump of pervious concrete has no correlation
with its workability it is not be specified as an acceptancewith its workability it is not be specified as an acceptance
criterion.criterion.

18. Hardened Properties:Hardened Properties:
Density and Porosity:Density and Porosity:
 The densities are in the order of 1600 kg/m3 toThe densities are in the order of 1600 kg/m3 to
2000kg/m3.2000kg/m3.
 The void contents of the pervious concrete ranges from 20The void contents of the pervious concrete ranges from 20
to 25%.to 25%.
Permeability:Permeability:
 Typical flow rates for water through pervious concrete areTypical flow rates for water through pervious concrete are
120 L/m²/min.120 L/m²/min.

19. Compressive Strength:Compressive Strength:
 Pervious concrete mixtures can develop compressivePervious concrete mixtures can develop compressive
strengths in the range of 3.5 MPa to 28 MPa.strengths in the range of 3.5 MPa to 28 MPa.
 Typical values are about 17 MPa.Typical values are about 17 MPa.
Flexural strength:Flexural strength:
 Flexural strength in pervious concretes generally rangesFlexural strength in pervious concretes generally ranges
between about 1 MPa and 3.8 MPa.between about 1 MPa and 3.8 MPa.

20. APPLICATIONS:APPLICATIONS:
The various applications of pervious concrete are as follows:The various applications of pervious concrete are as follows:
 Residential roads, alleys, and drivewaysResidential roads, alleys, and driveways
 Low-volume pavementsLow-volume pavements
 Sidewalks and pathwaysSidewalks and pathways
 Parking areasParking areas
 Tennis courtsTennis courts
 Sub base for conventional concrete pavementsSub base for conventional concrete pavements
 Well liningsWell linings
 Swimming pool decksSwimming pool decks
 Noise barriers.Noise barriers.

21. ADVANTAGES :
 Reduces runoff from site.
 Helps in unchanging ground water.
 Eliminates need for retention ponds & other costly storm
water management practices.
 Provides for more efficient use of land development.
 Water resources are conservedWater resources are conserved
 Adjacent trees and vegetation are allowed moreAdjacent trees and vegetation are allowed more
rainwater.rainwater.
 The permeability of pervious concrete providesThe permeability of pervious concrete provides
increased safety for drivers.increased safety for drivers.

22. IMPERVIOUSIMPERVIOUS PERVIOUSPERVIOUS

23. PERVIOUS CONCRETE RESIDENTIAL STREET SHOWING WATER
INFILTRATION

24. Walkway in Beijing, China built for 2008 Olympics

25. Pervious concrete in IndiaPervious concrete in India
 Pervious concrete can be successfully used in India inPervious concrete can be successfully used in India in
applications such as parking lots, driveways,applications such as parking lots, driveways,
gullies/sidewalks, road platforms, etc.gullies/sidewalks, road platforms, etc.
 Massive urban migration in Indian cities is causing theMassive urban migration in Indian cities is causing the
ground water to go much deeper and is causing waterground water to go much deeper and is causing water
shortages.shortages.
 Further, the rain water that falls on the concrete and asphaltFurther, the rain water that falls on the concrete and asphalt
surfaces tend to carry a high level of pollution and thissurfaces tend to carry a high level of pollution and this
pollution ends up in our waterways ultimately.pollution ends up in our waterways ultimately.

26.  The use of pervious concrete can help alleviate theThe use of pervious concrete can help alleviate the
damage of all of these ills.damage of all of these ills.
 In future with increased urbanization, diminishingIn future with increased urbanization, diminishing
ground water levels and focus on sustainability,ground water levels and focus on sustainability,
technologies such as pervious concrete are likely totechnologies such as pervious concrete are likely to
become even more popular in India as well as otherbecome even more popular in India as well as other
countries.countries.

27. References:References:
 Karthik H . Obla., “pervious concrete – an overview,” IndianKarthik H . Obla., “pervious concrete – an overview,” Indian
Concrete Journal, August 2010 pp. 9-18.Concrete Journal, August 2010 pp. 9-18.
 NRMCA, “What, Why, and How? Pervious Concrete,NRMCA, “What, Why, and How? Pervious Concrete,
“Concrete in practice series, CIP 38, Silver Spring,“Concrete in practice series, CIP 38, Silver Spring,
Maryland, May 2004, 2pp..Maryland, May 2004, 2pp..
 Pervious concrete pavements, southeast Association,Pervious concrete pavements, southeast Association,
www.pervious.infowww.pervious.info
 NRMCA, “Freeze Thaw Resistance of Pervious Concrete,”NRMCA, “Freeze Thaw Resistance of Pervious Concrete,”
National Ready Mixed Concrete Association, May 2004.National Ready Mixed Concrete Association, May 2004.
 RMC Research Foundation Pervious Concrete ResearchRMC Research Foundation Pervious Concrete Research
Compilation: Past, Present and Future.Compilation: Past, Present and Future.
 CONCRETE TECHNOLOGY TODAY, Portland CementCONCRETE TECHNOLOGY TODAY, Portland Cement
Association.Association.

28. THANK YOU..!THANK YOU..!