POROUS ASPHALT

1. POROUS ASPHALT PAVEMENT
CHARLY OUSEPH
S7CA
CLASS NO. : 26
M.A.COLLEGE OF ENGINEERING
KOTHAMANGALAM
Guided by,
Prof. Leni Stephen
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2. CONTENTS
 INTRODUCTION
 POROUS ASPHALT
 DESIGN CRITERIA
 CONSTRUCTION OF PAVEMENT
 COST & MAINTENANCE
 ADVANTAGES
 DISADVANTAGES
 CONCLUSION
 REFERENCES
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3. INTRODUCTION
 Allow water to drain
 Open graded asphalt concrete (OGAC), open graded
friction course (OGFC), and permeable asphalt
 Storm water management
 Allow the water to spread over
 Does not require additives
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4. POROUS ASPHALT
 Lower concentration of fines
 Voids more than 20%
 Polymers and/or fibers can be used
 Mixed at a standard asphalt plant
 “recharge bed” built of stones
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5. DESIGN CRITERIA
Slope
 Limit surface slope to 5%.
 Construct bottom as flat as
possible.
 Use conventional HMA for
steeper slopes.
Avoid compacting soils
during construction.
Avoid excessive earthwork.
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4” OPEN GRADED
FRICTION COURSE
(POROUS PAVEMENT)
4” OF 3/4”WASHED
CRUSHED STONE
12”-18”OF 1.5”- 2.5”
WASHED CRUSHED STONE
GEOTEXTILE LAYER
UNCOMPACTED
SUBGRADE

6. 6
SECTION OF POROUS ASPHALT PAVEMENT

7. CONSTRUCTION OF PAVEMENT
/PARKING LOT
A. EXCAVATED WITHOUT HEAVY
EQUIPMENT COMPACTING THE BED
BOTTOM.
B. NON-WOVEN GEOTEXTILE IS LAID
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8. C. CLEAN (WASHED) UNIFORMLY
GRADED AGGREGATE IS PLACED IN
THE BED AS THE STORAGE MEDIA.
D. THE ASPHALT IS LAID DOWN JUST LIKE
STANDARD ASPHALT AND
COMPACTED.
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9. This road is made of porous asphalt.
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11. COMPARISON 11
Low visibility
Water splash
And spray
Traffic noise
High visibility
Secured skid
resistance
Quiet
Dense Graded Asphalt Pavement Porous Asphalt Pavement

12. COST & MAINTENANCE
 Total project cost is comparable with ordinary asphalt
pavement
 Material cost is 20-25% more than ordinary asphalt
 Vacuum sweep twice per year
 Clean inlets twice per year
 Do not seal coat
 Repairs can be made with standard asphalt not to exceed 10%
of surface area
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13. ADVANTAGES
 Flood control
 Recharges groundwater to underlying aquifers
 Extended pavement life due to well drained base
 maintains traction while wet
 Reduced spray from traveling vehicles, reduced roadway noise
 Allows for reduction of storm water infrastructure
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14. DISADVANTAGES
 Requires routine vacuum sweeping
 Accidental seal-coating, will cause failure
 Quality control for material production and installation are
essential for success
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15. CONCLUSION
 Most effective and affordable techniques for addressing storm
water management
 Recharging and replenishing ground water
 Longer life than ordinary pavements
 High pollutant removal efficiency by reducing runoff
 Improving the quality of water
 Maintaining a cooler pavement
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16. REFERENCES
 Akihiro Moriyoshi , Toshiro Jin , Takaaki Nkai and Hiroshi Ishikawa (2013),
Construction and Building Materials , Evaluation methods for porous asphalt
pavement in service for fourteen years Vol.42 ,pages 190-195.
 Robert M Roseen, Thomas P Ballestro,James J Houle,Joshua F Briggs and
Kristopher M Houle(2012),Journal of environmental vol.138engineering,water
quality and hydrologic performance of aporous apalt pavement asastorm
water treatment strategy in a cold climate
 Mohd Rosli Mohd Hasan,Jia Yih Eng,Moer Othman Hamzah and J.L.m
Voskuilen (2013),Construction and Building Materials, The effects of breakpoint
location and normal maximum aggregate size on porous asphalt properties vol
44,pages 360-367
 Glanluca Dell Acgua ,Moro kura ,Raffaelo Mauro and Francesca Russo
(2012),procedia-Social and Behaviour Sciences , Freeway crashes in wet
weather ;the comparative influence of porous and conventional asphalt
surfacing Vol 54,pages 618-627
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