Introduction
Cutback Bitumen RC70 is a form of liquid asphalt cement that incorporates a solvent or distillate to achieve liquid form at ambient temperatures, enhancing its coating ability on aggregates.
Properties of Cutback Bitumen RC70
Bitumen RC-70 contains a specific percentage of distillate and exhibits unique characteristics.
Solvent Percentage and Types
It can contain between 12 and 40 percent distillate, with gasoline or naphtha commonly used as flux agents. The solvent content influences the curing time and application properties of RC-70.
Declining Use and Environmental Impact
High demand for distillates in energy sectors and air quality regulations have led to a decrease in the use of cutback asphalt, including RC-70, in construction projects.
Types of Cutback Asphalt
Various types of cutback asphalt exist, with RC-70 falling under the rapid curing category with specific ASTM specifications.
Rapid Curing (RC) Cutback Asphalt
RC cutback asphalt, including RC-70, is designed for rapid curing and is suitable for certain pavement construction and maintenance tasks.
Uses of Cutback Bitumen RC-70
It has several practical applications in construction projects.
Penetrating Prime Coats
It is used for penetrating prime coats on surfaces, enhancing adhesion and durability.
Patching Mixtures
RC-70 is incorporated into patching mixtures for repairing damaged asphalt surfaces.
Tack Coats
Ideal for tack coats, RC-70 improves bonding between layers during pavement construction and maintenance.
Packing and Safety Measures
Details regarding the packaging of RC-70 and essential safety precautions are outlined.
Packaging Details
RC-70 is packaged in bulk tankers and new steel drums on pallets to prevent leaks and ensure safe transportation.
Safety Precautions
Safety data sheets should be consulted before use, and precautions such as eliminating ignition sources, wearing appropriate PPE, and avoiding contact with skin or vapors must be followed.Specification of Cutback Bitumen RC-70
|
Property |
specification limit |
Test method |
|
|
Min |
Max |
||
|
Kinematic viscosity at 60°c ,cST |
70 |
140 |
ASTM D2170 |
|
Flash point(tag open cup), °c |
— |
— |
ASTM D3143 |
|
Distillation test |
|||
|
to 437°f(225°c) |
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 |
Download the Specification of Bitumen RC70
Download the MSDS fo Bitumen RC70