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. 536
10.5 Mixes of concrete :
10.6 Mixing :
The proportions of ingredient of plain cement concrete are defined
by bulk. All ingredients shall be measured separately and accurately
in properly constructed gauge box.
The plain cement concrete shall be mixed in a machine, mixing by
hand shall not be permitted normally. However, where the quantity
of work is small or permitted by hand mixing, shall be permitted by
the engineer if requested by contractor.
10.7 Placing and compaction :
10.8 Curing :
The concrete shall be mixed and place in position, compacted and
finished within 30 minutes of mixing. Compaction of plain concrete
may be with vibrators or otherwise at the direction of the Engineer.
The detailed procedure of the work shall be as per Clause No.B6.6,
B.6.7 and B.6.8 of “Standard Specifications of B & C Department of
Government of Maharashtra”.
Concrete shall be protected from damage, excessive heat, rain etc.
and covered with wet Hussein or some absorbent materials soon
after initial set. After final set the concrete shall be kept wet for a
period of not less than 14 days the date of placing.
10.9 Keeping records :
Contractor shall maintain a record approved by the Engineer at site
of work containing the following details / information.
a) Daily receipt of cement and use of cement in various items.