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在钢结构材料的检验中我们需要控制那些要素与事项

发布时间:2015-9-14 9:43:34 浏览次数:539
1、薄涂型防火涂料涂层表面裂纹宽度不应大于0.5㎜;厚涂型防火涂料涂层表面裂纹宽度不应大于1㎜。

2、钢结构防火涂料的品种和技术性能符合设计要求,并经检测符合规定。检查产品质量证明文件、中文标志和检验报告。

3、钢结构防火涂料的粘结强度、抗压强度应符合《钢结构防火涂料应用技术规程》CECS24:90的规定。检验方法应符合《建筑构件防火喷涂材料性能试验方法》GB9978的规定,检查检验报告。

4、防火涂料涂装前钢材表面除锈及防锈底漆涂装应符合设计要求和有关标准的规定。表面除锈用铲刀检查和用《涂装前钢材表面锈蚀等级和除锈等级》GB8923规定的图片对照观察检查。底漆涂装用于漆膜测厚仪检查,每个构件检测5处,每处的数值为3个相距50㎜测点涂层干漆膜厚度的平均值。

5、薄涂型防火涂料的涂层厚度应符合有关耐火极限的设计要求。厚涂型防火涂料涂层的厚度,80%及以上面积应符合有关耐火极限的设计要求,且最薄处厚度不应低于设计要求的85%。用涂层厚度测量仪、测针和钢尺检查。测量方法应符合《钢结构防火涂料应用技术规程》CECS24:90的规定及本规范附录F。



Type 1, thin coating fireproof paint coating surface crack width should not be greater than 0.5 ㎜; Thick type coating fireproof paint coating surface crack width should not be greater than 1 ㎜.

2 varieties of fire retardant coating, steel structure and technical performance meet the design requirements, and tested in accordance with regulations. Check product quality certificate, Chinese logo, and inspection report.

3 of fire retardant coating, steel structure adhesive strength, compressive strength should meet the technical specification for steel structure fire retardant coating CECS24:90. Inspection methods shall comply with the building component fireproof coating material performance test methods GB9978 regulation, check the inspection report.

4, fire-retardant coating steel surface rust removal and before painting anti-rust primer should comply with the design requirements and the provisions of the relevant standards. Surface rust removal with the shovel check and with the steel surface before coating corrosion level and descaling grade GB8923 image contrast observation of the check. Primer is used in the paint film thickness gauge inspection, inspection and five each components every value is three apart 50 ㎜ point average dry film thickness of the coating.

5, thin coating thickness of fire retardant coating shall comply with the design requirements of the fire endurance. Thick type coating fireproof paint coating thickness and area of more than 80% and shall comply with design requirements of fire resistance, and the thinnest thickness should not be less than 85% of the design requirements. With the coating thickness measuring instrument, measuring needle and steel rule checks. Measurement should comply with the "technical specification for steel structure fire retardant coating CECS24: appendix F 90 regulations and this specification.



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