1 Scope
This standard specifies classification, requirement, testing method, test rules, packing, marking, storage and transport of pre-applied and wet installed waterproof sheets.
This standard is applicable to waterproof sheets cemented with post-cast-concrete or cement grout mixture.
2 Normative References
For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications are not applicable to this standard. However, the parties who enter into agreement according to this part are encouraged to research whether the latest editions of these documents may be applied or not. For undated references, their latest editions are applicable to this part.
GB/T 328.2-2007 Test methods for building sheets for waterproofing - Part 2: Bitumen sheets for waterproofing - visible defects
GB/T 328.5-2007 Test methods for building sheets for waterproofing - Part 5: Plastic and rubber sheets for waterproofing - thickness and mass per unit area
GB/T 328.8-2007 Test methods for building sheets for waterproofing - Part 8: Bitumen sheets for waterproofing - tensile properties
GB/T 328.9-2007 Test methods for building sheets for waterproofing - Part 9: Plastic and rubber sheets for waterproofing - tensile properties
GB/T 328.10-2007 Test methods for building sheets for waterproofing - Part 10: Bitumen plastic and rubber sheets for waterproofing - watertightness
GB/T 328.11-2007 Test methods for building sheets for waterproofing - Part 11: Bitumen sheets for waterproofing - flow resistance at elevated temperature
GB/T 328.14-2007 Test methods for building sheets for waterproofing - Part 14: Bitumen sheets for waterproofing - flexibility at low temperature
GB/T 328.15-2007 Test methods for building sheets for waterproof - Part 15: Plastic and rubber sheets for waterproof - foldability at low temperature
GB/T 328.18-2007 Test methods for building sheets for waterproofing - Part 18:Bitumen sheets for waterproofing - resistance to tearing (nail shank)
GB/T 328.20-2007 Test methods for building sheets for waterproofing - Part 20: Bitumen sheets for waterproofing - resistance to peeling of joints
GB/T 328.24-2007 Test methods for building sheets for waterproofing - Part 24: Bitumen plastic and rubber sheets for waterproofing - resistance to impact
GB/T 328.25-2007 Test methods for building sheets for waterproofing - Part 25: Bitumen plastic and rubber sheets for waterproofing - resistance to static loading
GB/T 328.26-2007 Test methods for building sheets for waterproofing - Part 26: Bitumen sheets for waterproofing - dissoluble composite of membrane (impregnated and coated asphalt amount)
GB/T 529-2008 Rubber vulcanized or thermoplastic - Determination of tear strength (Trouser, angle and crescent test pieces) (ISO 34-1: 2004, MOD)
GB/T 16777-2008 Test methods for building waterproofing coatings
3 Classification
3.1 Type
3.1.1 Products are classified as pre-applied (Y) type and wet installed (W) type according to construction mode.
3.1.2 By body materials, products are classified as macromolecule waterproof sheets (P type) and bituminous waterproof sheets using polyester reinforcements (PY type)
3.1.3 By cementing surface, products are classified as single-side adhesion (S), and double-side adhesion (D). Bituminous waterproof sheets using polyester reinforcements PY (type) should adopt double-side adhesion.
3.1.4 By property, wet installed products are classified as type I and type II.
3.2 Specification
3.2.1 Thickness of pre-applied waterproof sheets:
Type P: body macromolecule materials in thickness of 0.7 mm, 1.2 mm, 1.5 mm; corresponding sheets in through thickness of 1.2 mm, 1.7 mm, 2.0 mm.
Type PY: 4.0 mm.
3.2.2 Thickness of wet installed waterproof sheets:
Type P (through thickness of sheets): 1.2 mm, 1.5 mm, 2.0 mm.
Type PY: 3.0 mm, 4.0 mm.
3.3 Marks
Products shall be marked by the order "construction mode, type, cementing surface, body material thickness / through thickness, area, and code number of this standard".
Sample: wet installed type I double-side adhesion bituminous waterproof sheets using polyester reinforcements (20 m2, 3.0 mm) is marked as:
W PY I D 3.0 mm 20 m2-GB/T 23457-2009.
3.4 Purpose
Pre-applied waterproof sheets are applicable to underground waterproofing works and so on, and directly cemented with post-cast structural concrete mixture.
Wet installed waterproof sheets are used for non-exposed water-proofing works, and cemented with base course through cement grout; sheets should be lapped each other in a self-adhering way.
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