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Mastic Asphalt Project in Mainland
China - JiangYin Bridge
Jiangyin Bridge, one of the longest bridges in the world over the Yangtze
River in PRC, was choosing mastic asphalt as the road surface
pavement material. Anderson Asphalt Limited was the specified
contractor.
 Following
are some of the key statistics of the project :
- Span 1,385m. The 4th longest suspension bridge in the
world.
- Water proofing and surfacing system : Mastic Asphalt,
over bituminous waterproofing membrane
- The Mastic Asphalt was designed to accommodate the range
of temperature movement of +70oC to -15oC and
show no softening at 70oC.
- The surfacing consists of a wearing course of machine
laid mastic asphalt over a waterproof membrane applied to
the steel bridge deck. The waterproofing membrane, which
comprises polymer-modified bituminous binder, is fully compatible
with the mastic asphalt.
The mastic asphalt surface is designed to cope with the following
environmental parameters :
- Temperature
- Highest surface temperature 70oC
- Highest air temperature 38.1oC
- Lowest are temperature -14.2oC
- Annual average 15.2oC
- Average hottest month 27.7oC
- Precipitation
- Highest Monthly average 181.8mm
- Highest in a day 219.6mm
- Relative Humidity
- Annual relative humidity 80%
- Highest monthly average 85%
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Design Traffic Capacity:
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Up to year 2000 : 26,910 trucks/day (equivalent to
48,557 cars/day)
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Up to year 2010 : 56,003 trucks/day (equivalent to
95,403 cars/day)
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Up to year 2017 : 61,548 trucks/day (equivalent to
99,608 cars/day)
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Durability:
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15 years for the design traffic load and capacity
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