Residue on 600 micron sieve, % max
- RS-1
- 0.05
- RS-2
- 0.05
- MS
- 0.05
- SS-1
- 0.05
- SS-2
- 0.05
- CSS-1H
- 0.1
GWC ASPHALT | A GWC GROUP BUSINESS
Bitumen Emulsionsfor Better Roads
Manufactured at our automated plant in Dudhnoi, Assam. Supplied in bulk and in drums to contractors and government departments across Northeast India.
BIS Licensed (IS 8887:2018)ISO 9001:2015 Certified70,000+ MT Annual Capacity1,137 Contractors Assisted
Find Your Grade
Match the work on your site to the right emulsion.
| Application | Grade | Setting |
|---|---|---|
| Tack coat | GWC RS-1 | Rapid |
| Surface dressing, grouting, penetration macadam | GWC RS-2 | Rapid |
| 20 mm premix carpet, patching | GWC MS | Medium |
| Prime coat on WMM or WBM base | GWC SS-1 | Slow |
| Fog seal, slurry seal, premix seal coat | GWC CSS-1H, GWC SS-2 | Slow |
| Pothole repair | GWC IPR, GWC MS | Instant, Medium |
Not sure which grade fits?Our support engineers will recommend one.
Talk to an EngineerAbout GWC Asphalt
GWC Asphalt manufactures and markets bitumen emulsions. Our promoters have a long association with road construction. At our plant on Damra Road, Dudhnoi, Goalpara, we make emulsions to Indian and international standards, backed by a fully equipped laboratory.
We work with contractors and government departments across Northeast India. Our network of support engineers advises on application and recommends the right product for each job.
Our bitumen emulsion products are manufactured in-house and are BIS-certified.
GWC Asphalt
Mission and Vision
Mission
To dominate the Market by offering our customers the best of quality products and the best customer experience at the best possible prices.
Vision
GROW with our customers. WIN their confidence. CONQUER the hearts of all the partners.
Product Range
Eight products for road construction and maintenance. Every emulsion grade is supplied in bulk and in 200 kg RC, MS or HDPE drums.
Use at ambient temperature. Do not dilute with solvent. Roll drums five times before use.
Technical Data
Typical properties by grade. A test certificate comes with every batch.
Viscosity, Saybolt Furol, sec
- RS-1
- 20-100 at 50C
- RS-2
- 100-300 at 50C
- MS
- 50-300 at 50C
- SS-1
- 20-100 at 25C
- SS-2
- 30-150 at 25C
- CSS-1H
- 20-100 at 25C
Binder residue, % min
- RS-1
- 60
- RS-2
- 67
- MS
- 65
- SS-1
- 50
- SS-2
- 60
- CSS-1H
- 57
Setting time
- RS-1
- 15 min avg
- RS-2
- -
- MS
- 30 min
- SS-1
- Under 48 hr
- SS-2
- Under 60 min
- CSS-1H
- 60 min
Storage stability, % max
- RS-1
- 2
- RS-2
- 1
- MS
- -
- SS-1
- -
- SS-2
- 2
- CSS-1H
- 1
Rate, kg per 10 m2
- RS-1
- 2 to 3
- RS-2
- 28 to 32
- MS
- 7% of aggregate
- SS-1
- 6 to 15
- SS-2
- 5 to 12
- CSS-1H
- 5 to 15
Grades are made to IS 8887:2018. GWC CSS-1H is made to ASTM D 2397. Rates depend on surface and application. Dash means not stated.
Certified and Approved
BIS Licence
Licence No. CM/L-5400089653 for bitumen emulsion for roads (cationic type), IS 8887:2018. Valid to 21 July 2031.
ISO 9001:2015
Quality management system certified by Toris Management Pvt. Ltd. Scope: manufacture of bitumen emulsion, IPR and other bituminous products. Valid to 5 August 2029.
Third-party tested
Emulsions are tested by independent laboratories against IS 8887:2018. Reports are submitted with project approvals.
Source approvals
Approved as a source of RS-1 and SS-1 emulsion on National Highway projects in Assam and Mizoram.
Recent source approvals
| Project | Approving body | Date | Scope |
|---|---|---|---|
| NH-306 Silchar to Vairengte to Sairang, Package-2, Assam | NHIDCL PMU Silchar | Mar 2024 | RS-1, SS-1 |
| NH-17 Bilaspur to Guwahati, Package-9, Assam | Authority Engineer, K&J Projects | Sep 2024 | RS-1, SS-1 |
| Guwahati Bypass (NH-37) flyovers, Assam | Authority Engineer, TPF Engineering with MAV Associates | Dec 2023 | RS-1, SS-1 (provisional) |
| NH-29 Package-6, Kwaram Tara to Dillai, Assam | Authority Engineer, Chaitanya Projects Consultancy | Nov 2023 | RS-1, SS-1 (provisional) |
| NH-102B Tuivai to Keifang, Mizoram | Authority Engineer, L.N. Malviya Infra Projects | Oct 2024 | Emulsion |
Certificates and approval letters are available on request.
Request CertificatesPlant and Quality Control
Capacity
70,000+ MT installed annual capacity of bitumen emulsions.
Automation
PLC-controlled plant with a continuous record of batch data.
Process
High-shear colloid mill, fed through water and bitumen phase systems with mass flow and magnetic flow meters.
Laboratory
In-house laboratory with Penetrometer, Ductility and Elastic Recovery testing machines.
Quality checks
Raw materials and finished goods checked. Every batch carries a test certificate.
Technical support
Support engineers advise on application and the correct use of each product.
Clients and Testimonials
Contractors and infrastructure companies that have worked with GWC Asphalt.
GWC Asphalt
Get in Touch
Share the grade, quantity and site location. We respond with availability and pricing.
Call Us+91 75770 10777Visit Us1st Floor, Anil Plaza-II, ABC, Guwahati, Assam, India.
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