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Cutback bitumen MC RC SC emulsion
asphalt is simply a
combination of asphalt cement and petroleum solvent. Like
emulsions, cutbacks are used because they reduce asphalt
viscosity for lower temperature uses (tack coats, fog seals,
slurry seals, stabilization material). Similar to emulsified
asphalts, after cutback asphalt is applied the petroleum solvent
evaporates leaving behind asphalt cement residue on the surface
to which it was applied. Cutback asphalt is said to cure as
the petroleum solvent evaporates away. The use of cutback
asphalts is decreasing because of:
Environmental regulations. Cutback asphalts contain volatile
chemicals that evaporate into the atmosphere.
Emulsified
asphalts evaporate water into the atmosphere.
Loss of high energy products. The petroleum solvents used
require higher amounts of energy to manufacture and are
expensive compared to the water and emulsifying agents used
in emulsified asphalts.
In many places, cutback asphalt use is restricted to patching
materials for use in cold weather
Cutback MC-30 is medium curing (MC) cut-back
asphalt consisting of penetration grade asphalt cement and
diluent or cutter of medium volatility.The diluent temporarily
reduces the viscosity of the asphalt cement for ease of handling
and application. After application the diluent evaporates,
leaving asphalt cement to perform its function
Petrochemical Trade Cutback MC-30 conforms to the specifications
of ASTM D2127 (Medium-Curing Asphalt) or AASHTO M82The major use
for Petrochemical Trade Cutback MC-30 is in the road maintenance
industry where it is used as a prime coat of the base course
prior to placing of the bituminous surface course. Its purpose
is to bind the granular material of the base course to the
asphalt layer. Usual application is by spray using a
distributor.
Cutback MC-70 is medium curing (MC) cut-back
asphalt consisting of penetration grade asphalt cement and
diluent or cutter of medium volatility. The diluent
temporarily reduces the viscosity of the asphalt cement for ease
of handling and application. After application the diluent
evaporates, leaving asphalt cement to perform its function.
Petrochemical Trade Cutback MC-70 conforms to the
specifications of ASTM D2127 (Medium-Curing Asphalt) or AASHTO
M82a) Roofing - As a waterproofing membrane and as an adhesive
to stick chippings onto a flat, horizontal roof to minimize the
effects of weathering from the sun.
b) Damp-Proof Courses - Used as damp-proof membranes in concrete
floors particularly for small repairs or where extensions are
keyed-in to existing structures.
Cutback MC-250 is medium curing (MC) cut-back
asphalt consisting of penetration grade asphalt cement and
diluent or cutter of medium volatility. The diluent
temporarily reduces the viscosity of the asphalt cement for ease
of handling and application. After application the diluent
evaporates, leaving asphalt cement to perform its function.
Petrochemical Trade Cutback MC-250 conforms to the
specifications of ASTM D2127 (Medium-Curing Asphalt) or AASHTO
M82a) Roofing - As a waterproofing membrane and as an adhesive
to stick chippings onto a flat, horizontal roof to minimize the
effects of weathering from the sun.
b) Damp-Proof Courses - Used as damp-proof membranes in concrete
floors particularly for small repairs or where extensions are
keyed-in to existing structures.
Cutback MC-800 is a medium curing (MC) cut-back
asphalt consisting of penetration grade asphalt cement and
diluent or cutter of medium volatility.
The diluent temporarily reduces the viscosity of the asphalt
cement for ease of handling and application. After application
the diluent evaporates, leaving asphalt cement to perform its
function.
Petrochemical Trade Cutback MC-800 conforms to the
specifications of ASTM D2127 (Medium-Curing Asphalt) or AASHTO
M82a) Roofing - As a waterproofing membrane and as an adhesive
to stick chippings onto a flat, horizontal roof to minimize the
effects of weathering from the sun.
b) Damp-Proof Courses - Used as damp-proof membranes in concrete
floors particularly for small repairs or where extensions are
keyed-in to existing structures.
Cutback MC-3000 is a medium curing (MC) cut-back
asphalt consisting of penetration grade asphalt cement and
diluent or cutter of medium volatility.
The diluent temporarily reduces the viscosity of the asphalt
cement for ease of handling and application. After application
the diluent evaporates, leaving asphalt
cement to perform its function.
Petrochemical Trade Cutback MC-3000 conforms to the
specifications of ASTM D2127 (Medium-Curing Asphalt) or AASHTO
M82a) Roofing - As a waterproofing membrane and as an adhesive
to stick chippings onto a flat, horizontal roof to minimize the
effects of weathering from the sun.
b) Damp-Proof Courses - Used as damp-proof membranes in concrete
floors particularly for small repairs or where extensions are
keyed-in to existing structures.
RC GRADES
The specification for Rapid Curing (RC) Cutback Asphalts applies
to liquid asphaltic materials in the form of asphalt cement
combined with a petroleum solvent of a gasoline type. |
