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RAWMAT HIGH DENSITY BENTONITE (HDB) MEMBRANES |
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RAWMAT® HDB TYPE S Material |
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Type S materials are
a factory prehydrated sodium bentonite membrane for the waterproofing of below ground structures where an oversite blinding has been specified.
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TYPE S1 Structural - one metre rolls |
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The RAWMAT® HDB TYPE S1 material consists of a UV-stabilised woven geotextile layer, a factory pre-hydrated natural sodium bentonite central core and a non-woven perforated scrim layer. The scrim allows intimate contact between the bentonite core and the concrete to which it is applied. Supplied in a one metre roll |
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| Pile sealed with Type S1 and Rawpaste Mastic |
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Dressing Type S1 to Lift Pit |
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Type S1 bonded to wall after being fixed to the shutter prior to pour |
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TYPE S2 Structural - two metre rolls |
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| Supplied in a 2 metre roll which requires lifting equipment but provides large coverage and reduced overlaps. |
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| Type S2 partly covered with 50mm blinding concrete |
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Installation of Type S2 using Installation Frame |
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Type S2 installed under slab |
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RAWMAT® HDB TYPE P1 Material - One metre rolls |
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Suited for small ponds. One metre rolls allow easy handling and installation.RAWMAT® HDB Type P1 is laid with the woven geotextile in contact with the prepared substrate and the non-woven geotextile uppermost. Due to its active nature, overlaps self-seal and minor puncture wounds self-seal. |
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TYPE P1 Structural |
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A factory prehydrated sodium bentonite membrane for the waterproofing of below ground structures where no oversite blinding is used beneath the membrane. |
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| Nailing Type P1 to excavation as Back shutter for Lift Pit. |
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Drilling Type P1 to fix to Secant Pile wall with plugs. |
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Laying Type P1 onto Cordeck. |
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TYPE P1 Landscaping |
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Type P1 Landscaping is used for the lining of small ponds and lagoons where the use of heavy machinary is impractical. 1 metre rolls allow easy handling and installation. |
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| Installation of Type P1 anchor trench |
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Overlap of Type P1. |
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Covering Type P1 |
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TYPE P1 Environmental |
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An effective barrier used to prevent the seepage of any cooling oil into the ground below, used in conjunction with sand identification and stone fill layers. 1 metre rolls allow easy handling and installation. |
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Type P1 Environmental lining the base of a transformer installation |
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Overlapping of Type P1 Environmental on a reed bed. |
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RAWMAT® HDB TYPE P2 Material - Two metre rolls |
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RAWMAT® HDB Type P2 is used for the lining of large ponds, lagoons and canals. Two metre rolls allow easy handling and installation. |
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TYPE P2 Structural |
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| Type P2 laid onto compacted formation & covered with 50mm protective concrete |
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Type P2 used to seal compacted sub-base |
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Type P2 sealing compacted base |
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TYPE P2 Landscaping |
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| Laying of Type P2 at the corner of a basin. |
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Overlapping of Type P2. |
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Formation of Type P2 anchor trench. |
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TYPE P2 Environmental |
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| Placement of unopened Type P2. |
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Compaction of covering layer. |
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Type P2 covering slope with geo-grid. |
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RAWMAT® TYPE SF1 & SF2 Material |
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Rawmat Type SF material provides additional protection to the clay core in the Structural Waterproofing sector, where fluctuating water tables may be present.
SF1 - One metre rolls allow easy handling and installation.
SF2 - Two metre rolls require lifting equipment but give large coverage and reduced overlaps.
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| Type SF laid over Tunnel |
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Type SF applied vertically to a wall |
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Type SF applied to reservoir roof & covered with gravel |
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RAWMAT® Slabseal 2 Material |
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Slabseal consists of a non-woven perforated scrim layer, a factory pre-hydrated natural sodium bentonite central core and a thin polyethylene layer. The scrim allows intimate contact between the bentonite core and the concrete to which it is applied, the polyethylene layer prevents ingress of water to the bentonite central core and provides a dual sealing layer, in the Structural Waterproofing sector. 2 metre rolls reduce overlaps. |
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| Sealing to vent penetration through roof with Slabseal |
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2-metre wide Slabseal installed using Lifting Frame |
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Slabseal 2 laid in rain across roof |
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| Rawpaste Mastic is non-toxic and chemically inert, it has the same composition as the Rawmat® HDB membrane and the Rawseal® waterstops, however it contains additional polymerised liquid to create a trowellable grade of mastic which can be applied to seal cuts and penetrations in the membrane and as a bedding mastic for waterstops. Rawpaste mastic is available in 20kg buckets. |
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© Concrete Waterproofing Manufacturing 2007 |
