ppt on permeable pavement for stormwater management.

1. Water Absorbing Road(W.A.R.): New technique for Road
construction using permeable Pavement
Department of Civil Engineering
JSPM’s Imperial College of Engineering and Research
Presented by: Saurabh Pawar (S190510157)
Guided by: Rahul Kesarkar

2. CONTENTS
1.Introduction
2.Objectives of study
3.Area of study
4.Observations
5.Resarch Methodology
6. Merits/Demerits
7.Future Scope of Study
8.Conclusions
9.Referances

3. Introduction:
• Permeable pavement is a technique which allows storm water to enter
through it.
• In addition to reducing runoff this technique efficiently traps
suspended solids, filters and pollutants from water and we can even
get more filtered water.

4. • India has one of the largest road networks in the world , aggregating
to about 71 lakh kilometer at present.
Expressways/Nation
al highway
37%
State Highways
2%
Major district Roads
36%
Other district Roads
24%
Village Roads
1%
Expressways/National highway State Highways
Major district Roads Other district Roads
Village Roads

5. Main three Types of Permeable Pavement:
• Permeable Concrete Pavement:(PC)
PC is produced by reducing the fines in a conventional concrete mix to maintain interconnected void space for drainage.
Pervious concrete has a coarser appearance than standard concrete.
Permeable Asphalt Concrete:(PA)
Porous asphalt is very similar to standard asphalt except that the fines have been removed
to maintain interconnected void space. PA may not be approved unless the designer shows
that the design provides equal or better performance than PICP and PC.
• Porous Interlocking Concrete Pavers:(PICA)
PICPs are a type of unit paver system that maintains drainage through gaps between the pavers filled with small, uniformly graded gravel. The pavers are
bedded on a gravel layer that provides uniform support and drainage.

6. Objectives of Study:
• Volume Reduction and Flood Control.
• Water Quality
• Road Safety and Durability
• Heat island Effect Mitigation

7. Area of Study:
• Jaipur_Sitapur
• Proposed Method of Construction at Site:

8. Observations:
• Compressive Strength of pervious & Conventional
Concrete for 7& 28 days respectively:

9. Maintenance:
Maintenance
1.Routine
2.Periodic
3.Annual
4.Other
1.Routine Maintenance: It should be performed to keep entire pavement clean.
Blowing (Leaf blower). Truck sweeping.
2.Periodic Maintenance: Mainly done when Temperature changes.
Vacuum street sweepers.
3.Annual Maintenance: It is performed annually (yearly)
Deep cleaning or unclogging.
4.Other: a. Winter maintenance
b. Oil & grease stains

10. Comparing Cost of Pervious Concrete with Conventional :
Conventional Concrete
Residential Driveway 100m2
NZD$
Contractor 1 Quote 10,700
Contractor 2 Quote 10,438
Contractor 3 Quote 10,036
Average Cost 10,391
Premium for Pervious Concrete 15%

11. Research Methodology:

12. Hydrological Design: Structural design:
HYDROLOGICAL
DESIGN OF
PERMEABLE
PAVEMENT
Available
Space.
Minimum
depth in
seasonal
water table.
Informed
owner.
Soil.

13. INSTALLATION OF PERMEABLE CONCRETE
PAVEMENT:
1.Sub-grade and sub-base
preparation
3.Placement
4.Joint placement 5.Finishing 6.Curing 7.Opening to traffic
2.Batching and mixing

14. Merits/Demerits:
Merits
• Effective surface Runoff Management
• Control over Pollutants
• Ground Water Recharge
• Eliminates Costly Drainage Systems
• Reduced heat island effect (due to evaporative
cooling effect of water and convective airflow).
Demerits
• It requires specialized construction practices.
• The bond strength between particles is lower than
conventional concrete and therefore provides a
lower compressive strength.
• Clogging of voids thus affecting the purpose of
pavement.
• Special attention possibly required with high
groundwater.
• Special attention and care in design of some soil
types such as expansive soils and frost-susceptible
ones.

15. Future Scope of Study:
• Flaky aggregate can be use to provide easy passes of water without any
extra drainage system provided. (Flaky aggregate have more strength).
• Water can be filtered and stored as fresh water below the ground.
• We can also give direction to water specifically according to need. By
providing certain angle to the flacky aggregate water which gets
drained will make its way to the slope going down towards the sewer
line or any other drainage arrangement. This could be useful where soil
strata have less water absorption capacity.
• A better understanding of the performance of permeable pavements
over a time frame that better corresponds with a life-span of 20 years.
• To scale up, the national government should encourage the formation
of this new technique at both national and international level for open
conversations in exchange of experience, good practices and
innovations, enabling sponge-related knowledge to be institutionalize.

16. Conclusions:
• Pervious concrete has less strength than conventional concrete by 18.2% for M15, 14.5% for M20 and 12.6%
for M25.
• Though the pervious concrete has low compressive, tensile and flexural strength it has high coefficient of
permeability hence the following conclusions are drawn based on the permeability, environmental effects and
economical aspects.
• It is evident from the project that no fines concrete has more coefficient of permeability. Hence, it is capable
of capturing storm water and recharging the ground water. As a result, it can be ideally used at parking areas
and at residential areas where the movement of vehicles is very moderate.
• In many cities’ diversion of runoff by proper means is complex task. Use of this concrete can effectively
control the run off as well as saving the finances invested on the construction of drainage system. Hence, it
can be established that no fines concrete is very cost effective apart from being efficient.

17. References:
• Bethany Eisenberg , LEED AP., “Permeable Pavement”(book which
deals with layout , site selection and benefits of permeable
pavements)
• North Carolina State University Biological and Agricultural Engineering
(NCSU-BAE).www.bae.ncsu.edu/stormwater/downloads.html
• Articles:
Urban waterways permeable pavement article – published by: NC state
university

18. “Our relationship with the Land-will Pre-
determine Our relationship with water”
Any Queries??