Volume-IF - JantERmantER

DCPL-K4A02
TABLE-IX : QUANTITIES OF MATERIALS REQUIRED FOR 10 SQ.M OF ROAD
SURFACE FOR 2 CM THICK OPEN-GRADED PREMIX CARPET
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Aggregates of Carpet
a) Stone chippings - 12 mm size; passing
20 mm sieve and retained on 10 mm sieve 0.18 Cu.m
b) Stone chippings - 10 mm size; passing
12.5 mm sieve and retained on 6.3 mm sieve 0.09 Cu.m
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Binder for premixing (quantities in terms of straight run bitumen)
Total : 0.27 Cu.m
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a) For 0.18 Cu.m of 12 mm size stone
chippings at 52 kg per Cu.m
9.5 kg
b) For 0.09 Cu.m of 10 mm size stone
chippings at 56 kg per Cu.m
5.1 kg
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Total : 14.6 kg
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3.7.3 Construction Operation
3.7.3.1 Weather and Seasonal Limitations
Open-graded premix carpet shall not be laid during rainy weather or when
the base course is damp or wet or when the atmospheric temperature in
shade is 16 Deg.C or below.
3.7.3.2 Preparation of Base
The underlying base on which the bituminous carpet is to be laid shall be
prepared, shaped and conditioned to the specified lines, grade and cross
section in accordance with Table I as directed by the Engineer. The surface
shall be well cleaned by removing caked earth and other foreign matter with
wire brushes, sweeping with brooms and finally dusting with sacks as
necessary.
3.7.3.3 Tack Coat
A tack coat complying with clause 3.5 shall be applied over the base
preparatory to laying of the carpet. Application of tack coat shall, however,
(PCA.775.S034sca7) V.II-D2/S-VII : 20