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Joint former Lightweight, cross-linked, closed cell, expanded Polyethylene joint former
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BASE JACKS
COMBI-NUTS
SCAFFOLDING COUPLERS
APPLICATION
Joint former is used as an expansion / contraction joint former.
ADVANTAGES
Joint former has good compression qualities with good
recovery capacity.
Joint former is supplied with a hinged temporary blocking
piece, leaving a clean, neat and perfectly sized groove
providing a consistent depth channel for joint sealent.
Joint former is cut to size, eliminating wastage and cutting
on site.
The Joint former material is flexible and can be used around
corners.
Joint former Excellent resistance to chemicals.
Joint former is waterproof, does not disintegrate, rot or swell.
No bond breaker required.
JOINT FORMER PHYSICAL PROPERTIES / TECHNICAL DATA
Composition: |
Closed cell, cross-linked expanded \
Polyethylene. |
Colours: |
White. |
Roll size: |
10 meters. |
Density: |
33 kg/m3 (nominal). |
Size: |
Available in various sizes and thicknesses
according to requirements. |
Compression Deflection: |
10 %: 36 kPa; 25 %: 61 kPa; 50 %:
143 kPa. |
Compression-Set: |
25 % 22 hr COMP. / 24 hr REC.: <6 %; 50%
22 hr COMP. / 24 hr REC.: <20 %. |
Resistance: |
Good resistance to dilute acids and alkalis. |
Flammability: |
< 310 mm / min. on a 3 mm sample. |
Thermal Conductivity: |
24°C: 0.037 W/m.K. |
Temperature Range: |
Up to 90°C. |
Tensile Strength: |
> 163 kPa. |
Elongation and Break: |
>144 %. |
JOINT FORMER PRODUCT CODES AND SIZES
Product |
Foam |
Width |
Thickness |
Code |
Colour |
(mm) |
(mm) |
JT50 |
White |
50 |
10 |
JT75 |
White |
75 |
10 |
JT80 |
White |
80 |
10 |
JT90 |
White |
90 |
10 |
JT100 |
White |
100 |
10 |
JT110 |
White |
110 |
10 |
JT115 |
White |
115 |
10 |
JT120 |
White |
120 |
10 |
JT125 |
White |
125 |
10 |
JT130 |
White |
130 |
10 |
JT150 |
White |
150 |
10 |
JT175 |
White |
175 |
10 |
JT180 |
White |
180 |
10 |
JT190 |
White |
190 |
10 |
JT200 |
White |
2100 |
10 |
JT220 |
White |
220 |
10 |
JT230 |
White |
115 |
10 |
JT250 |
White |
250 |
10 |
JT300 |
White |
300 |
10 |
DIRECTIONS FOR USE
Ensure all concrete surfaces are free from base grit and dust.
Apply glue in vertical strips ± 100 mm wide and 25 mm from the
top to avoid the tear-off strip from sticking to the concrete face.
Allow the glue to dry (according to manufacturer’s instructions)
and then stick Joint former onto the glued
concrete face.
Cast the next section of concrete as required. Take care not to
let the wet concrete get behind Joint former as this will result in a
wavy joint.
When the joint sealant is about to be applied, simply peel the
tear-off strip out of the formed joint, leaving an even groove of
uniform depth for filling with sealant.
Please Note: In conjunction with water retaining structures,
Joint former must NOT be used where the water head is in
excess of 3 metres. Use Aquajoint (SPX 120) for applications where the
water head exceeds 3 metres and is not more than 15 metres.
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