Description of Cutback Bitumen RC-70

Cutback Bitumen RC-70 is Rapid curing (RC) cut-back asphalt consisting of penetration grade asphalt cement and diluent or cutter of rapid volatility.
Our Cutback Bitumen RC-70 complies with cutback petroleum asphalts of the rapid-curing type for use in the construction and treatment of pavements.
Cutback Bitumen RC-70 is a rapid curing cutback bitumen that contains 55% bitumen, is black in color, and is manufactured strictly as per ASTM D-2028M standard.

Cutback Bitumen RC-70 is dissolved of bitumen in solvents of gasoline. In many countries, kerosene and other volatile petroleum-derived products are added as a cutter or cutback agent to bitumen to reduce (or cutback) the viscosity of the bitumen. The mixture obtained may be called cutback bitumen.

The reduction in viscosity of the bitumen aids the construction of seal coats in road pavements as the softened mixture wets the chips more easily. The cutback agent evaporates from the seal coat, the cutback agent becoming a negligible component of the seal coat a few months after application. If significant amounts of the cutback agent remain in the seal coat an unwanted long term softening effect may result.

CutBack Bitumen RC-70 Uses

This kind of bitumen is suitable to be used in the construction and treatment of pavements as per ASTM D2028-97 reapproved in 2004. Cutback Grade Bitumen is normally used in spraying and in some mixing applications. Current common uses are in penetrating prime coats and in producing patching or stockpile mixtures. Cutback asphalt used in mixing with aggregate will usually contain an adhesion agent to assist in the coating of the aggregate surface.

Cutback agents are used to lowering the viscosity of bitumen when it is applied as a primer to the surface of a road pavement aggregate base course or substrate. Kerosene is used as a bitumen cutback agent at different concentrations according to local conditions and requirements.
The cutback bitumen is ideal for prime coat and cold applied because of easy uses and no need to thinning and heating.
Cutback bitumen RC-70 consists of initial incorporation of asphalt into the surface of non-asphalt based course preparatory to any superimposed treatment of construction.
The cutback asphalt RC-70 applying to waterproof of surfaces plug capillary voids, coat, and bond loose mineral particles.

This kind of bitumen is suitable to be used in the construction and treatment of pavements as per ASTM D2028-97 reapproved in 2004. Cutback Grade Bitumen is normally used in spraying and in some mixing applications.

Bitumen-Aggregate mixtures

Mixed-in-place (road mix):

• Pavement base and surfaces with sandy soi

Bitumen RC70 is ideal for surface treatment as:

• Prime coat on open surfaces
• Prime coat on tight surfaces
• Tack coat
• Dust binder
• Mulch treatment

Guaranty and Safety of Bitumen RC-70

We guaranty the quality of cutback Bitumen RC-70 with the arrangement of the international inspector. By checking the quality and quantity of the bitumen on each shipment during the loading to the vessel. Also controlling the production by QC team via batch test report before shipping.

Packing of Bitumen RC70

Packing of cutback bitumen RC-250 is in a new thick steel drum on the pallet to prevent any leak inside of the container, IBC Tank, and also bulk in vacutainer.

Specification of Cutback Asphalt RC70

property	Specification Limit	Test method
Min	Max
Kinematic viscosity at 60°c , mm2/s	250	500	ASTM D2170
Flashpoint(tag open cup), °c	—	—	ASTM D3143
Distillation test Distillate, volume percent of total Distillate to 680°f(360°c)
to 437°f(225°c) To 500°f(260°c) to 600°f(316°c) Residue from distillation to 680°f(360°c), percent volume by difference	50	—	ASTM D402
70	—
85	—
55	—
Test on Residue from distillation test
Penetration 77°f(25°c) 100g,5s mm	80	120	ASTM D5
Ductility 77°f(25°c) 5cm/min cm	100	—	ASTM D113
Solubility in trichloroethylene %	99	—	ASTM D2042
Water, percent volume	—	0.2	ASTM D95