Cold Mix
Understanding Cold Mix
Cold Mix is a bituminous mixture composed of mineral aggregate, water, and a tailor-made cationic bitumen emulsion. It can be prepared using concrete mixers, Cold Mix plants, or modified hot mix plants. This technology enables production in all seasons, even with wet aggregates.
Advantages
- Cost-Effective: Provides an economical solution for road construction and maintenance.
- Environmentally Friendly: Utilizes a process that does not require heating, minimizing energy consumption.
- Versatile Application: Suitable for new road construction as well as preventive and corrective maintenance.
Technology Features
- Mix Design: Field application of mix design tailored to available aggregates, without the need for specific grades of bitumen emulsions.
- Stability: Designed for mixing stability with a wide variety of graded aggregates.
BTC Cold Mix
Characteristics:
- Water-Based Bitumen Emulsion: Formulated with moderate viscosity and optimized setting time for enhanced mixing stability.
- High Binder Content: Suitable for applications like premix carpeting and premix seal coat, ensuring robust performance.
BTC Cold Mix technology is a reliable choice for sustainable and efficient road construction and maintenance, utilizing specially designed bitumen emulsions that cater to various aggregate types without the need for heating.
Applications:
- Premix Carpeting
- Premix Seal Coat
Properties of Cationic Bitumen Emulsion ColdMix as per IS:8887-2004 with BTC Report
| Test Parameters | Test Results | IS Specification | Grades of Conformity | Test Method |
| Viscosity by Say bolt viscometer | 44 SEC | 30-150 (at 50 °C) | SS-2 | IS 3117 |
| Residue on 600μ IS Sieve | 0.03% | 0.05% (Max) | MS & SS-2 | IS:8887 |
| Storage Stability | 0.83 | 2% (Max) | SS-2 | IS:8887 |
| Particle Charge | Positive | Positive | MS & SS-2 | IS:8887 |
| Coagulation of Emulsion at low temp. | Nil | Nil | ||
| Miscibility with water | No Coagulation | No Coagulation | MS & SS-2 | IS:8887 |
| Coating ability & water resistance | ||||
| a) Coating, dry aggregate | Good | Good | MS | |
| b) Coating, after spraying | Fair | Fair | IS:8887 | |
| c) Coating, wet aggregate | Fair | Fair | ||
| d) Coating, after spraying | Fair | Fair | ||
| Tests on Residue | ||||
| a) Residue by Evaporation | 66.5 | 60% Min | MS & SS-2 | IS:8887 |
| b) Penetration (25 °C/100 gm/5 sec) | 84 | 60-150 dmm | MS & SS-2 | IS:1203 |
| c) Ductility (27 °C/cm) | 100+ | 50 min | MS & SS-2 | IS:1208 |