A waterproofing membrane made of high-density polyethylene (HDPE) or low-density polyethylene (LLDPE) with an additional antioxidant additive package which extends its design life.
This additional stabilisation means the geomembrane can be used in projects with more abrasive chemical products or more extreme service conditions. The additional antioxidants are more resistant in this type of environment, and are retained inside the polymer matrix. Consequently, the mechanical properties of the Alvatech HP-OIT geomembrane will not deteriorate over time.
Applications
Alvatech HTR provides solutions for industries and applications which require high temperature resistance:
Characteristics and advantages
Product specifications:
| Thicknesses | From 0.75 mm to 3.00 mm |
| Width | 7.5 m and 5.8 m – Other widths available upon request |
Additional information
3 stages in the ageing of most geomembranes
Source: Koerner, Robert “In-situ temperature monitoring of geomembranes”.
Lifetime prediction of HDPE (nonexposed) at various field temperatures.
| In service temperature (ºC) | Stage “A” (years) | Stage “B” Total (years) | Stage “C” Total (years) | Total Prediction * (years) | ||
| Standard OIT | High Press. OIT | OIT Average | ||||
| 20 | 200 | 215 | 208 | 30 | 208 | 446 |
| 25 | 135 | 144 | 140 | 25 | 100 | 265 |
| 30 | 95 | 98 | 97 | 20 | 49 | 166 |
| 35 | 65 | 67 | 66 | 15 | 25 | 106 |
| 40 | 45 | 47 | 46 | 10 | 13 | 69 |
* Total = Stage A (Average) + Stage B + Stage C
Source: Koerner, Robert “In-situ temperature monitoring of geomembranes”.
