Pervious concrete is a special type of concrete that allows water to pass through it, reducing stormwater runoff. It consists of cement, coarse aggregate, and spaces or voids in between the aggregates that are interconnected, allowing water to infiltrate. Pervious concrete has benefits like groundwater recharge, reduced flooding, and replenishing of aquifers. It requires proper maintenance to prevent clogging of the voids and remains permeable. Applications include parking lots, driveways, and other hardscaped areas.

1. PERVIOUS
CONCRETE
Pervious
Concrete
Tech Sethia
FOLLOW FOR VIDEO LECTURE
WITH COMPLETE EXPLAINATION

2. INTRODUCTION
2
 It is a special type of concrete with a high porosity used for
concrete flatwork applications that allows water to pass
directly.
 It reduces the runoff and allowing groundwater recharge
 The high porosity is attained by a highly interconnected
void content.
 Recognized as the best management practice by US
Environment Protection agency (EPA)
Pervious
Concrete

3. PERVIOUS CONCRETE
3
 It is a mixture of Cement, Corse aggregate and with or
without sand and has enough cementitious paste to
coat the coarse aggregate while preserving the
interconnectivity of the voids.
 This concrete is being used as paving material to solve
or reduce the storm water runoff to the drainage
system and minimize water logging problems
Pervious
Concrete

4.  It is an important application for sustainable construction
 It is one of many low impact development techniques
used by builders to protect water quality.
Fig.1 Pervious Concrete
Source: http://www.stevensonconcrete.com
4
Pervious
Concrete

5. Fig. 2 Schematic representation of
Source: http://www.stevensonconcrete.com
5
Pervious
Concrete

6. PERVIOUS CONCRETE IMPERVIOUS CONCRETE
Fig.3 Transpiration rate of Pervious and impervious
Concrete
6
Pervious
Concrete

7. PERVIOUS IMPERVIOUS
Fig. 4 Pervious and impervious concrete pavement
Source: http://www.google.com
7
Pervious
Concrete

8. HISTORY OF PERVIOUS CONCRETE
 It was first used in 1852. Pervious Concrete was first used in
1852.
 It has been employed in European countries Pervious concrete has
been employed in European countries since the nineteenth century.
 The earliest usage of pervious concrete in modern history was for
two houses in England.
 Over 900 houses were built from for two houses in England.
 Most houses using pervious concrete are in the United
Most houses using pervious concrete are in the United Kingdom
8
Pervious
Concrete

9. PROPERTIES OF PERVIOUS
CONCRETE: CONCRETE:
9
 Fresh Properties
 The plastic pervious concrete mixture is stiff compared
to The plastic pervious concrete mixture is stiff
compared to traditional concrete. traditional concrete.
 Slumps, when measured, are generally less than ¾
inches (20 mm), although slumps as high as 2 inches
(50 mm) have been used
Pervious
Concrete

10. HARDENED PROPERTIES
10
 Density and Porosity
 The densities are in the order of 1600 kg/m3 to
2000kg/m3. 2000kg/m3.
 The void contents of the pervious concrete ranges from
20 to 25%. to 25%.
 Permeability
 Typical flow rates for water through pervious concrete
are
120 L/m²/min. 120 L/m²/min and 3.8 MPa.
Pervious
Concrete

11.  Compressive Strength
 Pervious concrete mixtures can develop compressive
strengths in the range of 3.5 MPa to 28 Mpa.
 Typical values are about 17 MPa.
 Flexural strength
 Flexural strength in pervious concretes generally ranges
between about 1 MPa
11
Pervious
Concrete

12. MATERIALS USED
12
 Aggregates
 Cementious Materials
 Water
 Admixtures
Pervious
Concrete

13. AGGREGATES
 Pervious concrete has little or no fine aggregates in the
mixture.
 Aggregate size is typically between 3/8 to1/2 inch
maximum.
Fig. 5 Aggregate
Source: http://www.wikipedia.com
13
Pervious
Concrete

14. CEMENTIOUS MATERIALS
14
 Typically type-I cement is used for the production of pervious
concrete.
 Supplementary cementious materials such as fly ash or slag can
be used in
 Exchange up to about 25% (fly ash) and up to about
50%(slag) of cement.
Pervious
Concrete

15. Table 1 Physical properties of
Cement Source:[1]
15
Pervious
Concrete

16. WATER
 Water meeting standard requirements for conventional
concrete can be used for the production of pervious
concrete
Fig.6 water
Source: http://www.stevensonconcrete.com 16
Pervious
Concrete

17. ADMIXTURES
 Air entraining admixtures may be used to improve the
freeze/thaw durability of the paste/mortar.
Fig.7 Concrete with admixture
Source: http://www.google.com
17
Pervious
Concrete

18. Table 2: Typical Pervious Concrete Materials
Proportions
18
Source :[1]
Pervious
Concrete

19. MAINTENANCE
19
 Maintenance of pervious concrete pavement consists
primarily of prevention of clogging of the void structure.
 Cleaning options may include power blowing and pressure
washing.
 Pressure washing of a clogged pervious concrete
pavement has restored 80% to 90% of the permeability in
some cases.
Pervious
Concrete

20. ENVIRONMENTAL BENEFITS
 Reduces storm water runoff
 Eliminates need for detention ponds
 Replenishes water tables and aquifers.
 Allows for more efficient land development.
 Minimizes flash flooding and standing water.
 Prevents warm and polluted water from entering streams.
 Mitigates surface pollutants.
 Light reflectivity is higher than with asphalt surfaces, reducing any
heat island effect. 20
Pervious
Concrete

21. DISADVANTAGES
21
 Runoff from adjacent areas onto pervious concrete needs to be
prevented.
 The parking areas are generally limited to auto parking and
occasional trucks.
 If reinforcement is required, epoxy coated bars should be used.
 Concrete is variable in permeability; over vibration significantly
reduces permeability.
 It is still a new material that requires acceptance from cities and
states.
Pervious
Concrete

22. APPLICATIONS
22
 Pervious pavement for parking lots.
 Alleys and driveways.
 Trees gates in sidewalk .
 Swimming pool decks.
 Tennis court.
 Greenhouse floors.
Pervious
Concrete

23. CONCLUSION
23
 The pervious concrete helps the water to infiltrate
 Cities with pervious pavements would be safer for traffic, be
cleaner and less pollution.
Pervious
Concrete

24. REFERENCES
 Hisar ,Vikram1, Mahla R.P(2015) “Experimental Study of
Pervious Concrete Pavement” International Journal for
Research in Applied Science & Engineering Technology
(IJRASET) .
 Shri, S. Deepa and R. Thenmozhi. (2012). "Flexural behavior of
hybrid fibrocement slabs with micro concrete and fibers." Int J Emerg
Trends Eng Dev 4(2): 165-177.
 Jing Yang, guoliang jiang. (2003). “Experimental study on
properties of pervious concrete pavement materials”, Cement and
Concrete research 33(2003) Pg No 381-386.
 Krishnaraj, C., Mohanasundram, K. M. and S. Navaneetha
santhakumar.(2012). “Implementation Study Analysis of Ft fmea
Model in Indian Foundry Industry”. Journal of Applied
Sciences Research, 8(2): 1009-1017. 24
Pervious
Concrete

25. THANK YOU
Tech Sethia