IZOMAX® STB PVC-DO
IZOMAX® STB PVC-DO is a flexible waterstop based on modified PVC with a centre bulb, placed on the outer face of the concrete section on the water-bearing side in expansion joints of reinforced concrete structures. It is used where dense reinforcement prevents an internal waterstop from being placed, or where an integrated solution with external waterproofing systems is required. Externally applied waterstops work on the principle that water pressure presses the waterstop against the concrete face.
Areas of Application
• Externally applied expansion joints beneath raft foundations
• Expansion joints on the earth side of walls
• Sections where dense reinforcement prevents an internal waterstop
• Integrated applications with external waterproofing membrane systems
• External face joints in tunnels, culverts and service galleries
Advantages
• The centre bulb accommodates joint movements
• Easy to install by fixing to the formwork before concreting
• Sealing ribs lengthen the water path
• Can be welded easily and homogeneously on site with heating-element (hot plate) welding equipment
• Produced from high-quality modified PVC for a long service life
• Resistant to ageing, alkaline environments and natural groundwater
• Forms a continuous sealing system with T, L and X junction pieces
|
Material composition |
PVC – Modified Polyvinyl Chloride |
|
Joint type |
Expansion joint |
|
Tensile strength (EN ISO 527-1 / -3) |
≥ 10 N/mm² |
|
Elongation at break (EN ISO 527-1 / -3) |
≥ 300 % |
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Elongation at break, −20 °C (EN ISO 527-1 / -3) |
≥ 200 % |
|
Tear strength (ISO 34-1) |
≥ 12 N/mm |
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Shore A hardness (ISO 48-4) |
75 ± 5 |
|
Density (EN ISO 1183-1) |
1.27 g/cm³ |
|
Water absorption by mass (EN ISO 62) |
≤ 1.5 % |
|
Ash content by mass (ISO 3451-1) |
≤ 5 % |
|
Softening point |
+42 °C – +52 °C |
|
Service temperature range |
−35 °C / +55 °C |
|
Standard |
TS 3078-1 / TS 3078-2 (DIN 18541-1 / DIN 18541-2) |
The values stated above are measured at +20 °C and 50 % relative humidity.
Dimensions
|
Type |
Width (cm) |
Thickness (mm) |
Weight (kg/m) |
Roll Length (m) |
|
DO 19 |
19 |
4 |
1.8 |
20 |
The values given in the tables are based on our experience and on the correct placement of the waterstop in the concrete. Cross-sections other than those listed can be produced on request.