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. 418
14.10.6 Test Procedure F:
Impact Resistance of the Coating:
The resistance of a cement polymer coated reinforcing bar to
mechanical damage shall be determined by the failing weight test. A
test apparatus similar to the described in test method G14 of the ASTM
standard shall be used. Impact shall occur on the low lying areas of the
coated bar, that is between deformation and ridges. The test shall be
performed at room temperature. With an impact force of 9NM, no
shattering, cracking or disbondment of the coating shall occur except at
the impact area, that is, area permanently performed by the tup.
Reference documents:
a) ASTM G8-90 Standard Test methods for cathodic disbanding of
pipeline coatings (method A).
b) ASTM G20-88 Standard Test method for chemical resistance of
pipeline coating.
c) ASTM G12-83 Standard Test method for non-destructive
measurement of film thickness of pipeline coating on steel.
d) ASTM D-4060-90 Standard Test method for abrasion resistance
of organic coatings by the Taber abraser.
e) ASTM G14-88 Standard Test method for impact resistance of
pipeline coating (Falling-weight test)
f) BIS 2770- Part 1: 1967 – Methods of Testing bond in Reinforced
Concrete Part 1- Pullout Test (1967).