Volume-IF - JantERmantER

DCPL-K4A02
Finishes : Repairs of surface defects, screening,
floating, steel trowelling and brooming, special
finishes.
o) Curing : Methods and length of time.
Copies of records and tests for the items noted above, as well as,
records of corrective action taken shall be submitted to the Engineer for
approval as may be desired.
3.0 INSTALLATION
All installation requirements shall be in accordance with IS:456 and as
supplemented or modified herein or by other best possible standards
where the specific requirements mentioned in this section of the
specification do not cover all the aspects to the full satisfaction of the
Engineer.
3.1 Washing and Screening of Aggregates
3.2 Admixture
Washing and Screening of coarse aggregate shall be carried out to remove
fines , dirts or other deleterious materials.
Washing of fine aggregate shall not be allowed, Fine aggregates shall
be screened only to remove dirt or other deleterious materials.
However , all washing & screening of aggregates shall be carried out by
approved means to ensure compliance with the aggregate specification.
All concrete shall be designed for normal rate of setting and hardening at
normal temperature. Variations in temperature and humidity under different
climatic conditions will affect the rate of setting and hardening, which will,
in turn, affect the workability and quality of the concrete.
Admixtures may be permitted to be used in accordance with IS:456 to
modify the rate of hardening, to improve workability or as an aid to
control concrete quality. The Engineer reserves the right to require
laboratory test or use test data, or other satisfactory reference before
granting approval. The admixture shall be used strictly in accordance
with the manufacturer's directions and/or as directed by the Engineer.
3.3 Grades of Concrete
(PCA.774.S034sca2) V.II-D2/S-III : 11