Detail of GB 18242-2008

Introduction of GB 18242-2008

1 Scope This standard specifies the classification and label, raw materials, requirements, test methods, inspection rules, marking, packaging, storage and transportationof styrene butadiene styrene modified bituminous sheet materials (abbreviated as “SBS waterproof sheet”). This standard is applicable to sheetmaterialwith padding of polyester felt, glass fibre felt or glass fibre reinforced polyester felt, bitumen modifier of styrene butadiene styrene (SBS) thermoplastic elastomer and coating ofinsulation materialson both sides. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies. GB/T 328.2 Test Methods for Building Sheets for Waterproofing - Part 2: Bitumen Sheets for Waterproofing - Visible Defects GB/T 328.4 Test Methods for Building Sheets for Waterproofing - Part 4: Bitumen Sheets for Waterproofing - Thickness and Mass Per Unit Area GB/T 328.6 Test Methods for Building Sheets for Waterproofing - Part 6: Bitumen Sheets for Waterproofing - Length, Width and Straightness GB/T 328.8 Test Methods for Building Sheets for Waterproofing - Part 8: Bitumen Sheets for Waterproofing - Tensile Properties GB/T328.10-2007 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 Test Methods for Building Sheets for Waterproofing - Part 14: Bitumen Sheets for Waterproofing - Flexibility at Low Temperature GB/T 328.17-2007 Test Methods for Building Sheets for Waterproofing - Part 17: Bitumen Sheets for Waterproofing -Adhesion of Granules GB/T 328.18 Test Methods for Building Sheets for Waterproofing - Part 18: Bitumen Sheets for Waterproofing - Resistance to Tearing (Nail Shank) GB/T 328.20 Test Methods for Building Sheets for Waterproofing - Part 20: Bitumen Sheets for Waterproofing - Resistance to Peeling of Joints GB/T 328.26 Test Methods for Building Sheets for Waterproofing - Part 26: Bitumen Sheets for Waterproofing - Dissoluble Composite of Membrane (Impregnated and Coated Asphalt Amount) GB/T 18244 Test Methods for Resistance to Weathering of Building Water Proofing Materials GB/T 18840 Padding for Bituminous Waterproof Sheets JC/T 904 Styrene Butadiene Styrene (SBS) Modified Bitumen 3 Classification and Label 3.1 Types 3.1.1Itis classified into polyester felt (PY), glass fibre felt (G) and glass fibre reinforced polyester felt (PYG) according to padding. 3.1.2It is classified into polyethylene film (PE), fine sand (S) and mineral granule (M) according to upper surface insulation material; the lower surface insulation materialis fine sand (S) orpolyethylene film (PE). Note: fine sand refers to mineral granules with diameternot greater than 0.60mm. 3.1.3It is classified into Type I and Type II according tomaterial property. 3.2 Specification The nominal width of sheet material is 1000mm. The nominal thickness of PY felt sheet material is 3mm, 4mm, 5mm. The nominal thickness of G felt sheet material is 3mm, 4mm. The nominal thickness of PYG feltsheet material is 5mm. The nominal area per coilof each sheetmaterial is 7.5m2, 10m2, 15m2. 3.3Label The product is labelledinthe following sequence: name, model, padding, upper surface material, lower surface material, thickness, area and number of this standard. Example: type I SBS modified bituminous sheet materials, withmineral granules as the upper surface (area: 10m2; thickness: 3mm) and polyethylene film polyester felt as the lower surface, is labelledas: SBS I PY M PE 3 10 GB 18242-2008 3.4 Application 3.4.1SBS modified bituminous sheet materials are mainly applicable to roofand underground waterproof engineering work for industrial and civil buildings. 3.4.2PYGfelt sheetmaterial may be used in machinery fixed single layer waterproof, but it needs to pass the test of resistance to wind load. 3.4.3TheGfelt sheetmaterial is applicable to the bottom layer in multi-layer waterproof work. 3.4.4Thesheetmaterial with the upper surface insulation material of opaque mineral granules is applicable to exposed application. 3.4.5Thesheetmaterial with the surface insulation material of fine sand isapplicable tounderground waterproof engineering work.

Contents of GB 18242-2008

Foreword I 1 Scope 2 Normative References 3 Classification and Label 4 Raw Materials 5 Requirements 6 Test Methods 7 Inspection Rules 8 Marking, Packaging, Storage and Transportation