| 1.General |
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This specification applies to a construction
work of road paving using ECOPHALT mixture. |
| 2.Raw meterial |
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Coarse aggregate : Based on KSF 2357
Fine aggregate : based on KSF 2358
asphalt: Based on KSM 2201 and KSM 2208 |
| 3.Coloring : A predefined coloring by the authorities |
| |
Dark Brown
Dark Red
Black |
| 4.Mix Ration of
Ecophalt |
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|
Gradation of Aggregate
| Size |
Shieve |
Pass(%) |
| 19M/M |
100 |
| 13M/M |
95¡100 |
| 4.75M/M |
10¡31 |
| 2.36M/M |
10¡21 |
| 0.074M/M |
2¡7 | |
Polymer modified agent(DAMA)
|
| |
Needs to stably adhere to asphalt. |
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Dye : There should be no problem in adhering to asphalt, and to
be mineral-based dye. (if a coloring is required) |
|
Mixing ratio
|
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Additive(asphalt) : 4.5¡5.5 of the weight of aggregate
Dye(Each coloring) : 2¡3% of the total mixture (if a coloring is required)
Polymer modified agent(DAMA) : About 1% of the total mixture in weight
|
| 5.Reguirement of
Ecophalt |
| |
|
ECOPHALT mixture will be tested according to the resistance test
to plastic flow of a asphalt mixture using KSF 2337 marshall tester, and shall
satisfy following criteria, |
Stability(Kgf)=over 500
Flowage(1/100§¯)=20¡40
Water permiability(§¯/sec)=over 1.0×10-2 N.B.)Number of Compaction of
the specimen is 50 times each side. |
| 6.Manufacturing process
|
| |
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It should be manufactured by Hot Asphalt Mixing Plant, and
Adding DAMA shall be added by manual or automatic control equipment. |
| 7.Construction |
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Because the material is porous, the work has to be completed in
a short period of time to control the temperature (use a finisher). To obtain a
predefined density, second and third application have to be done after the first
application. |
|
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Compaction of the third layer shall be done at a temperature of
over 90¡É, and traffic has to be allowed at a temperature of lower than 50¡É.
|
| 8.Test method |
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Testing aggregate: According to KSF 2357 and KSF 1247
Testing asphalt material: According to KSM 2201 and KSF 2208.
Testing asphalt mixture: According to KSF 2337. |
|
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Testing water permeability: For the case of ECOPHALT mixture,
in-situ water permeability shall be used after completing the pavement.
|
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Other tests Client shall
instruct constractor after completing the pavement.
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| 9.Test and inspection |
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Testing: For the case of ECOPHALT mixture, test record from the
constructor shall be used. Regarding manufacturing, Client can do intermediate
test during the manufacturing to verify the quality. |
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Inspection: Visual inspection will be carried out by inspectors from the
Client. |
| 10.Others |
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Considering that ECOPHALT mixture is porous, transportation
distance needs to be less than 40km and the transportation time has to be within
1 hour. |