Q. Plastic asphalt is (Solved)
1. used as a water proofing layer over roof
2. a mixture of cement and asphalt
3. a natural asphalt
4. a refinery product.
- b. a mixture of cement and asphalt
1. used as a water proofing layer over roof
2. a mixture of cement and asphalt
3. a natural asphalt
4. a refinery product.