t e c h n i c a l d a t a s h e e t t e c h n i c a l d a t a s h e e t t e c h n i c a l d a t a s h e e t

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1 ADCO Waterstop (Rearguard R) is the profile designed for external installation to construction / contracting joints. ADCO Waterstop (Rearguard S) is the profile designed for external installation to expansion joints. ADCO Waterstop (Dumbell) is the profile designed for internal installation to construction / contracting joints. ADCO Waterstop (Centrebulb) is the profile designed for internal installation to expansion joints. External PVC Waterstop profiles : ADCO Waterstop and 2 Proven design developed specifically for water excluding and retaining structures. Flexible aommodates movement during installation and service life. Pilable even at low temperatures. External seal anti-corrosion protection of steel reinforced at water face. Extended water path multiple ribs provide extended water path and back-up if ADCO Waterstop 841 shifts during installation. Nailing flange simplifies fastening. Stabilizing flange prevents rib displacement and folding during concreting. USES ADCO Waterstop 841 is designed to provide integral, waterproof sealing of movement and construction joints in the following types of in-situ : Water retaining Reservoirs, water towers and sewage tanks Dams, spillways, canals and culverts Swimming pools Bunded areas surrounding liquid retaining areas Water excluding Basement structures and underground parking areas Tunnels and subways Abutments and retaining walls Roof decks and podium areas Waterproofing of basements and sub-structures ADCO Waterstop 841 (1 and 2) is a special external, PVC Waterstop system for use in reinforced and is manufactured in a range of sizes. To be effective, Waterstops must form a continuous network at all joints to prevent the ingress of water / moisture. It is vital to use factory-produced intersections for changes of direction of profile. On-site jointing should be limited to simple butt-welds. The external Waterstop system has been designed with multiple T-shaped ribs that ensure solid embedment in-situ concrete and create a valve action to seal the water path. They are designed to suit either horizontal- or vertical applications. Extruded from high-grade polyvinylchloride compounded with first quality plasticizers, ADCO Waterstop 841 is ideal for sealing joints in subject to water pressure. When cast into the outside water face, they prevent the ingress of moisture while protecting the outer layer of reinforcement from corrosion. Locating them on the outside face of a concrete member promotes better compaction of concrete around the T-shaped ribs of the ADCO Waterstop 841 as there is less reinforcement congestion and the weight of wet concrete makes consolidation easier. APPLICATION External placing of waterstops in slabs enables the ADCO Waterstop 841 network to be fixed prior to installation of the reinforcement with simple stop-ends. This helps produce dense concrete free from segregation or honey-combing. The ADCO Waterstop 841 network should be loose laid directly onto the blinding concrete with timer stop-ends, or securely fixed into the vertical shutters using double-headed fasteners staggered at 500 mm cross-centres. A fully-continuous ADCO Waterstop 841 network must be formed using factory-made junctions, with site joints limited to simple butt welds of similar section. Page 1 of 6

2 APPLICATION (cont d ) Typical construction / contraction joint (Rearguard R) Details of separate kicker joint for retaining walls Basement walls can be constructed with plain, stop-end shutters with the external placement of the ADCO Waterstop 841 allowing fixing to take place before reinforcement is installed. Using double-headed fasteners allows formwork to be struck early, as waterstops will not shift during stripping. ADCO Waterstop 841 can also be used for non-suspended slabs in water retaining structures such as reservoirs, swimming pools and sewage treatment tanks. It should not be used externally in walls subject to hydraulic pressure. In water-retaining structures, retaining walls should always have internal ADCO Waterstop 841 cast centrally into the concrete wall to resist the water pressure. TECHNICAL ADVICE AND SUPPORT ADCON provides technical advice and support to comprehensive layouts, estimates and quantities and detailed advice on all aspects of waterproofing to suit your specific needs. NAILING FLANGE ADCO Waterstop 841 (1 and 2) sections are provided with a nailing flange. Special double-headed fasteners are used for wooden shutters. ADCO Waterstop 841 can also be used with steel shuttering, as the weight of the waterstop is carried on tying wires through secura clips and fastened back to the reinforcement. Shot-fired fixings can be used for fastening back to concrete walls, blockwork or masonry. Details of separate kicker joint for retaining walls Vertical L Flat L Flat X Flat T Page 2 of 6

3 FACTORY-PRODUCED JUNCTIONS Mitred and fuse-welded ribs maintain waterproofing. Extensive range of special fabrications to meet all project needs. Can be constructed from all sizes of ADCO Waterstops. Special transitions to link external and internal waterstops. CIRCULAR FABRICATIONS When ADCO Waterstop 841 (1 and 2) is used to form circular fabrications, the following general guidelines can be used to establish the number of chords needed for various diameters depending on the auracy required. USING ADCOseal WATERSTOP IN CIRCULAR STORAGE TANKS, ETC Radius (m) Number of Chords Deviation from true circle (mm) Waterstops bent on site PRODUCT RANGE ADCO Waterstop 841 (1 and 2) Sizes available under ADCO Waterstop (Rearguard R) : 150mm ; 200 mm and 240 mm. Sizes available under ADCO Waterstop (Rearguard S) : 150mm ; 200 mm and 240 mm. Supply for wall kicker joints : ADCO Size : 320 mm. AUXILIARY MATERIALS Internal Waterstops See ADCO Waterstop 841 (3 and 4) / ADCOswell 851 / ADCOjoint 470 (closed cell polyethylene joint forming material). ADCOseal 422 Polysulphide sealant. ADCOseal 412 Polyurethane sealant. ADCOseal 424 High chemical resistance sealant. SPECIFICATION ADCO Waterstops shall be used to form a continuous network as shown on the detailed drawings and shall be fixed in position with site jointing limited to butt joints, all strictly in aordance with the manufacturer s instructions and supplied by ADCON as per details below. Rearguard R Rearguard S Standard Waterstop available in 150 mm ; 200 mm and 240 mm. Page 3 of 6

4 TECHNICAL DATA Form : Extruded thermoplastic section Solids content : 100% Colour : Green Physical properties of PVC Compound : Tensile Strength : 13,78 N/mm 2 minimum Elongation at break : 285% minimum BS softness : Specific Gravity : 1.3 Hardness : Shore A Compound tested in aordance with BS 2571 and US Corps of Engineers CRD-C Complies with CKS Internal PVC Waterstop profiles : ADCO Waterstop and 4 High-performance, internal waterstop system extruded from high polyvinylchloride compounds formulated for sealing critical joints in reinforced. Robust profile large solid circular bulbs promote better anchorage and embedment into concrete and simplifies site joining. Flexible will aommodate large movements during construction and service life. Pliable remains flexible at low temperatures. Valve action created by concrete shrinkage around end bulbs. Factory-made transitions available to link with ADCO External Waterstop. Approved for potable water. Flat Dumbell for construction / contraction joints. Centre Bulb for expansion joints. USES ADCO Waterstops are designed to provide integral, waterproof sealing of movement and construction joints in the following types of in-situ : Water Retaining : Reservoirs, water towers and sewage tanks. Dams, spillways, canals and culverts. Swimming pools. Bunded areas surrounding liquid retaining areas. Roof decks and podium areas. PVC WATERSTOP Extruded PVC waterstop manufactured from high grade polyvinylchloride resins and fist quality plasticisers to the requirements of CKS Internal waterstops integrally cast water barriers for construction and expansion joints in water retaining and other structures. Page 4 of 6

5 ADCO INTERNAL WATERSTOPS ADCO Waterstop and 4 are high performance, internal waterstop systems which have been developed with large solid circular end bulbs for positive embedment in in-situ concrete. The shrinkage of the concrete creates a valve action seal to prevent the passage of water and is suitable for horizontal and vertical applications. They are extruded from specially formulated high-grade polyvinyl compounds with first quality plasticizers ideally suited for sealing critical joints in concrete structures subject to large water pressure or large dynamic movements. Being cast into the centre of the concrete member, ADCO Waterstop will provide resistance against hydrostatic pressure from both faces. ADCO Waterstop is an internally cast specially formulated PVC waterstop system manufactured in a range of sizes for use in reinforced concrete structures. It is essential to form a continuous waterstop network at all joints to prevent the ingress or escape of moisture / water. For changes of direction or profile it is essential to use factory-produced fabrications, with site joining limited to butt welds. APPLICATION Slab Joints : The ADCO Waterstop and 4 should be supported in specially prepared split stop-end formwork which holds the waterstop in the horizontal plane so preventing displacement and folding so that half of its width will be cast into concrete approximately halfway through the thickness of the slab. Care must be taken so that the waterstop is retained in the horizontal plane so that adequate compaction of concrete takes place below the web of the waterstop in order to avoid honeycombing of concrete. Lifting the waterstop during compaction to release entrapped air will assist in forming dense compacted concrete. After stripping the formwork supporting the waterstop, the second half can be cast into the adjoining slab with similar precautions taken with regard to the honeycombing. Wall Joints : The waterstop must be supported in the split-end formwork as described for slab joints, great care taken to ensure that the waterstop does not fold over under the weight of poured concrete. If fully retained fixing is required to prevent folding-over, the waterstop may be securely wired to the reinforcing steel using large secure clips fastened over the end bulbs. A fully continuous waterstop network must be formed using factory junctions with site joints limited to simple butt welds for a similar section. RANGE OF SIZES Type Dimensions A B C mm 12 mm 4 mm mm 16 mm 4.5 mm mm 18 mm 4.5 mm Type Dimensions A B C D mm 16 mm 4 mm 18 mm mm 16 mm 4.5 mm 20 mm mm 18 mm 4.5 mm 25 mm mm 18 mm 4.5 mm 27 mm mm 18 mm 5 mm 27 mm TECHNICAL DATA Form : Extruded thermoplastic section Solids content : 100% Colour : Green Physical properties of PVC Compound : Tensile Strength : 13,78 N/mm 2 minimum BS softness : Specific Gravity : 1.3 Hardness : Shore A Compound tested in aordance with BS 2571 and US Corps of Engineers CRD-C Complies with CKS Page 5 of 6

6 SITE JOINING The process of heat fusion or welding is used to provide butt joints between lengths of ADCO Waterstop 841 or between lengths of waterstop and performed junction pieces. TYPICAL JUNCTION PIECES Vertical T Vertical L Irregular Flat L Flat L Irregular Flat Y Flat X Flat T Moulded Transition External to Internal Waterstop HEALTH AND SAFETY Fused site welded jointing of PVC waterstops can result in the liberation of hydrochloric acid fumes. In confined spaces forced ventilation must be provided or a suitable respirator used. There is no health risk involved in handling ADCO Waterstop 841. The standard protective measures such as wearing gloves and goggles are recommended. Ensure that all site-weld jointing takes place in a well-ventilated area. Do not inhale fumes. Use a suitable respirator if necessary. PACKAGING ADCO Waterstop 841 is supplied in rolls of minimum 15 metres. UPDATE May This supercedes all previous documentation. Page 6 of 6