JC 689-1998 in English
ABOLISHEDMetal skinned EPS Sandwich Panels
- Issued on:1998-06-10
- Implemented on:1998-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
本标准规定了金属面聚苯乙烯泡沫塑料夹芯板的产品规格、原材料要求、技术要求、试验方法、检验规则、包装、运输、贮存等.
本标准适用于以阻燃型聚苯乙烯泡沫塑料作芯材,以彩色涂层钢板为面材,用粘结剂复合而成的金属夹芯板(以下简称“夹芯板,’)。
其他金属面材的夹芯板可参照本标准执行。
Introduction
Background of Standard Formulation and Technical Evolution
This standard was formulated in 1998 as the first special standard for metal-faced polystyrene sandwich panels in my country, filling the gap in domestic standards in this field at that time. Its technical indicators are mainly based on the composite process characteristics of color-coated steel plates and flame-retardant polystyrene foam, combined with more than ten years of engineering practice data. It is worth noting that the standard clearly requires the oxygen index of the core material to be ≥30, which reflects the initial requirements for the fire resistance of buildings at that time.
Analysis of core technical requirements
| Performance indicators | Standard requirements | Test methods | Engineering significance |
|---|---|---|---|
| Surface density | 0.5mm surface material ≥9.0kg/m²(50mm thick) | Weighing method | Influence on structural load calculation |
| Bond strength | >0.1MPa | Tensile test | Ensure the durability of the composite layer |
| Bending bearing capacity | Deflection ≤ L₀/200 at 0.5kN/m² | Uniformly distributed loading test | Evaluation of roof/wall applicability |
Key test method description
Adhesion performance test example
The standard stipulates the use of the double-sided tensile method: 200×200mm specimens are bonded to steel plates through epoxy resin and stretched at a rate of 0.5-1.5mm/min. The actual test data of a laboratory showed that the failure surface of qualified products showed the uniform adhesion of polystyrene particles, rather than the peeling of the adhesive layer.
Engineering application suggestions
- Material selection control: Preferentially use color steel plates with a zinc layer of ≥180g/m² on the substrate, and the core material density should be ≥18kg/m³
- Installation points: Plates with a length of >6m need to be provided with temperature deformation joints, and the support spacing is recommended to be ≤3.5m
- Fireproofing: Although the standard requires flame-retardant core materials, it is recommended to add fireproof coatings in actual projects
Standard limitations and development
This standard does not involve modern building requirements such as wind pressure performance and earthquake resistance. At present, new standards such as GB/T 23932-2009 have added indicators such as wind-resistant test and combustion performance classification. It is recommended that important projects refer to the latest standards for comprehensive evaluation.

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