Material structure
A multicomponent mass consisting of petroleum bitumen (or a mixture of bitumen), a filler and a plasticizer.Destination
It is used to isolate underground steel pipelines and other structures in order to protect them from soil corrosion and to seal joints of elements of underground structures.Technical specifications
| № | Indicators | norm for stamps | |||
| МБР-65 | МБР-75 | МБР-90 | МБР-100 | ||
| 1 | Softening temperature by the method of "Rings and balls", C, not less |
65 | 75 | 90 | 100 |
| 2 | Depth of penetration of a needle at 25 ° C, 0,1 mm, not less |
40 | 30 | 20 | 15 |
| 3 | Water saturation in 24 h,%, no more |
0.2 | 0.2 | 0.2 | 0.2 |
| 4 | Elongation at 25 ° C, cm, not less |
4 | 4 | 3 | 2 |
Recommendations on conditions of application
| Mastic brand | Ambient air temperature during mastic application, 0 C |
| МБР-65 | from +5 to - 30 |
| МБР-75 | from +15 to - 15 |
| МБР-90 | from + 35 to - 10 |
| МБР-100 | from + 40 to - 5 |