Water Swelling Waterstop Strip for Tunnels

• Customization: Available
• Shape: Strip
• Transport Package: with Paper Tube Inside and Waterproof Kraft and Pl
• Model NO.: 30*40mm
• Specification: 10mm*20mm, 15mm*20mm, 20mm*25 mm
• Trademark: YIZHUO
• Origin: Hebei, China
• HS Code: 4016931000
• Production Capacity: 10000meters/Day

Product Description

YIZHUO Bentonite Waterbar is a swellable hydrophilic Bentonite waterstop, made from a combination of synthetic rubber and sodium Bentonite clay. When it is installed in a confined joint it will swell upon contact with water to ensure a waterproof joint is created. Expansion of the waterbar creates a positive pressure against the faces of the concrete creating a joint that is resistant to hydraulic pressure.YIZHUO Bentonite Waterbar has a swelling capacity of up to 400% of its original volume. The expansive clay mass will seal any hairline shrinkage cracks that appear in the concrete. 
Bentonite is used for the integral sealing of horizontal and vertical construction joints in fresh concrete, pipe penetrations and sealing concrete to steel joints. It may be used in the place of conventional PVC waterbars as an effective method of preventing passage of water at construction joints. 

Item	Value
Size	25 mm x 20 mm
Colour	Black
Expansion volume rate	≥250%
Temperature resistance	- 20 ºC to 80 ºC
Weight	0.8kg/M
Density	1.5 Kg/cm3

Item	Value
Size	20 mm x 10 mm
Colour	Black
Expansion volume rate	≥250%
Temperature resistance	- 20 ºC to 80 ºC
Weight	0.34kg/M
Density	1.5 Kg/cm3

Applications include:
1.Foundation walls and slabs
2.Slabs-on-grade
3.Precast wall panels
4.Manholes
5.Pipe connections
6.Box culverts
7.Utility and burial vaults
8.Wet wells
9.Portable water tanks

SIZE AND PACKAGING
bentonite swelling type
25mm x 20mm x 5meter (30 Meter/box) 
20mm x 15mm x 6meter (36 Meter/box) 
20mm x 10mm x 9meter (54 Meter/box)
(20mm*5mm, 20*20mm,20*30mm 30*40mm 30*50mm 50*50mm)