Blown grade bitumen

DESCRIPTION
Blown grade bitumen is widely used as an anti-slip layer compound in the piling industry, for manufacture of roofing felts, for sound dampening felts and under carriage sealant in the automobile industry, electric cable joint protection, joint filling compound, sealant compound and many others.

It is also used in the manufacture of bituminous marine mastic for the oil & gas pipeline joints. It comes in various grades such as Grade 10/20, 85/25, 85/40, 115/15. We are also capable of producing other grades of Blown Bitumen upon request by our customers.

TECHNICAL ADVANTAGES

Durability
Flexibility
Water Resistant
Chemical Stability

APPLICATION
Blown grade bitumen shall be broken up into small pieces (for blown grade in moulded cake form) and heated slowly to the application temperature of 220?C to 230?C.

HANDLING PRECAUTIONS
Blown grade bitumen should not be heated to a temperature exceeding 230?C.

Specification

Characteristic/Test    R10/20        R85/25        R85/40        R115/15        Method

Relative density        1.00 - 1.06   1.00 -1.06   1.00 - 1.05   1.01 - 1.06   ASTM D70
at 25 ? C, g/ml     
     
Softening point        90 min          80-90         80-90           110-120      ASTM D36
(Ring and Ball), ? C     
     
Penetration            10-20           20-30          35-45           10-20         ASTMD5
at 25 ? C , 0.1 mm     
     
Flash point            200              200             200               200           ASTMD92
(Cleveland Open Cup), ? C     
Loss on heating     0.5               0.2              0.5               0.2            ASTMD6
% by mass     
     
Ductility               2                 3                 3                  2              ASTMD113
at 25 ? C cm, min