Crumb Rubber Modified Bitumen (CRMB)

Crumb Rubber Modified Bitumen (CRMB)

Introduction to CRMB:

Crumb Rubber Modified Bitumen (CRMB) is a specialized material created by blending bitumen with finely ground particles sourced from old tires. This unique blend significantly enhances road performance, particularly in colder climates. It improves resistance to damage, thereby extending the lifespan of roads by making them stronger and more durable.

History

The use of rubber in road construction traces back to the early 1900s, with commercial adoption accelerating in the 1960s, starting in the United States. Today, it has gained global popularity, especially in regions with abundant scrap tires.

Advantages and Benefits of Crumb Rubber Modified Bitumen 

Better Roads: It enhances road strength, stability, and resistance to damage such as cracks and fatigue. This results in reduced repair needs and longer-lasting roads.

Environmentally Friendly: Repurposing old tires, contributes to waste reduction in landfills and conserves natural resources, making it an eco-friendly option for road construction.

Cost Savings: It offers cost advantages over materials like concrete, leading to savings in construction projects. Additionally, it reduces construction time and minimizes traffic disruptions.

Versatility: It is adaptable for various road projects, from high-traffic highways to quieter streets, and performs well in diverse climates and designs.

Crumb Rubber Modified Bitumen Grades and Types

It is available in different grades tailored to specific climates and road networks:

CRMB 60: Suited for warm climates, enhancing bitumen elasticity and softening point to mitigate rutting and heat-related damage.

CRMB 55: Ideal for general climates with temperature fluctuations, ensuring optimal performance in a variety of road construction projects.

CRMB 50: Designed for colder climates, maintaining flexibility at lower temperatures and enhancing resistance to cold-temperature cracking.

Applications of CRMB

Its applications in various road construction scenarios, include:

Asphalt Mixtures: Enhancing pavement performance and longevity.

Surface Treatments: Improving skid resistance and sealing cracks.

Asphalt Emulsions: Strengthening the bond between asphalt layers.

Warm Mix Asphalt: Lowering temperatures and conserving energy.

Polymer Modified Asphalt (PMA): Enhancing pavement resistance.

Comparison Between CRMB and Traditional Bitumen

Opting for Crumb Rubber Modified Bitumen over traditional Bitumen yields significant benefits. It boasts a thinner topcoat and a longer lifespan of 5 to 15 years, leading to substantial maintenance cost savings. It exhibits strength under heavy loads, flexibility, resistance to skidding and wear, and better performance in extreme weather conditions. Additionally, It offers quieter road surfaces, resulting in an overall smart, cost-effective choice for road construction.

CRMB Pricing, Handling, Storage, and Transportation:

 For detailed information on pricing, storage, and transportation, contact us for expert advice tailored to your project needs. Ensure safety by wearing appropriate personal protective equipment (PPE) during handling, storage, and transportation. Train workers on safe practices and emergency protocols, adhering to local regulations, and safety standards, and obtaining necessary permits.

Packing

They are packaged in bulk tanker trucks or drums for transport and storage. Tanker trucks are suitable for large projects, while drums are used for smaller or remote areas. Packaging must comply with local safety regulations to prevent spills and leaks.

 

Specifications For All Grades of CRMB

S.NO

PROPERTIES

CRMB 50

CRMB 55

CRMB 60

ASTM STANDARDS

1

Penetration at 25 ֯C, 1/10mm, 100g, 5 sec

< 70

< 60

< 50

D5

2

Softening Point, (R&B), ֯C, Min

50

55

60

D36

3

Elastic Recovery at 15 ֯C ,%, Min

 50

50

50

D6084

4

Flash point , COC, ֯C , Min

220

220

220

D92

5

Separation, Difference in Softening Point,(R&B), ֯C, Max

4

4

4

6

Viscosity at 150 ֯C, Poises

1-3

2-6

3-9

D2170/D4402

Thin Film Oven Test & Test on Residue

7a

Loss in Mass, %, Max

1.0

1.0

1.0

D6

7b

Reduction in Penetration of residue at 25 ֯C , 100g, 5s, %,Max

40

40

40

D5

7c

Increase in Softening Point, ֯C, Max

7

6

5

D36

7d

Elastic Recovery at 25 ֯C, %, Min

35

35

35

D6085