particular specifications (road works) - CIDCO Maharashtra Ltd.

CIDCO OF MAHARASHTRA LTD
C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 285
9.1 GENERAL :
9.2 MATERIALS:
9.2.1 Bitumen:
The work consists of supply of all materials and labour required for
providing and laying bituminous bound macadam surface for
compacted thickness of 75 mm. This item include preparing the existing
road surface to receive the bituminous bound macadam course i.e.
application of tack coat, spreading of 40 mm size metal layers in
required thickness with compaction with vibratory roller, spreading
20mm thick, compaction with vibratory roller, heating and spraying
bitumen with equipment plant etc. Spreading key aggregate 12mm.
chips and final compaction with vibratory roller etc. complete. The work
shall be finished in accordance with the requirements of this
specifications and in close conformity with grades, lines, cross sections
and thickness as per approved drawings or as directed by the Engineer.
The bitumen shall be penetration grade 60/70 bituminous as per
Indian Standards Specifications.
9.3 AGGREGATES:
The aggregates shall comprise of 40 mm size and broken stone
satisfying standard specifications clause Rd. 22.3.2, Page 201 of
edition 1979, 20 mm size & 12 mm size crush aggregate satisfying
standard specifications clause Rd.41.3.2 Page 216 of edition 1979 for
respective size of crush metal. The aggregate shall be free from
disintegrated pieces, organic or other deleterious set for in table 500/4
of Ministry of Surface Transport’s specifications for Road & Bridges
edition June 1992.