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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL INDEX 428 Technical Data Hydrocor Type 2 Sheet Non expanding cork joint filler Uses Forming and filling expansion and static joints in: „ Pavements and slabs „ Roads, bridges and carparks „ Internal or external traffic areas Advantages „ E conomical „ Will not extrude under pressure „ Light weight and easy to handle „ Resilient and waterproof Standards Compliance Hydrocor Type 2 ASTM Specification D1752-84 (Type 111) Description Hydrocor comprises a range of joint fillers made from cork granules bound together with insoluble, synthetic resin. Hydrocor Type 2 provides the necessary rigid, void-free backing for elastomeric sealants. Technical Support Parchem offers a technical support package to specifiers and contractors as well as on-site technical advice from staff experienced in the construction industry. Design Criteria Internal & external traffic areas Hydrocor Type 2 provides the necessary support for joint sealants subject to pedestrian or wheeled traffic. Where traffic loads may be high it is preferable to recess the joint sealant approximately 2 mm below the surface to avoid direct abrasion. Examples of sealed expansion joints Thioflex 600*, Colpor 200*, Emer-Seal 200 etc Polyethelene bond breaker tape Hydrocor Type 2 Properties Technical data Hydrocor Type 2 Form: Compressible sheet, resin bonded cork Recovery after 50%: Greater than 90% Extrusion at 50% compression: Less than 1 mm in use Load required to compress to 50%: 0.75 MPa Expansion in boiling water (1 hour): 190 kg/m³ Application Instructions Do not remove waterproof wrapping from Hydrocor until immediately prior to fixing. Hydrocor must be fixed against one section of concrete after shutter removal. It may be fixed in place by copper nails or by bonding to concrete using Fosroc Construction Adhesive. The next section of concrete is then poured in place with minimal delays, directly against the Hydrocor. After initial cure of the concrete, the top section of the Hydrocor is removed by power brush, grinder or saw to form a sealing slot of the required dimensions. To avoid the cutting or grinding step, Hydrocor may be initially placed below concrete surface (at depth of required sealing slot) then another section of Hydrocor, timber or polystyrene foam placed above the fixed Hydrocor, reaching to the concrete surface. This unattached top section of filler is easily removed once concrete has cured. Note: a bond breaker such as polyethylene tape must be applied over the Hydrocor prior to application of the joint sealant. See individual Technical Data Sheets for details. Limitations Hydrocor may cause staining of the surrounding concrete in damp conditions, especially light coloured concrete or where exposed aggregate finishes are produced by high pressure hosing. Staining usually disappears after 6-8 weeks normal weathering. Stiffjoint, a non staining polyethelene foam filler may be more suitable in such applications. June 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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