| 建筑设计防火规范 |
| 添加时间：2019/4/17 14:15:39 浏览次数： |
| 2015年5月1日施行的GB 50016-2014《建筑设计防火规范》中6.7条款对于建筑保温和外墙装饰有了明确规定，建筑的内、外保温系统，宜采用燃烧性能为A级的保温材料，不宜采用B2级保温材料，严禁使用B3级保温材料。 Article 6.7 of GB 50016-2014 Code for Fire Protection in Architectural Design, which came into effect on May 1, 2015, clearly stipulates building insulation and exterior wall decoration. It is advisable to adopt grade A thermal insulation material with combustion performance, grade B2 thermal insulation material and grade B3 thermal insulation material. A级材料属于不燃材料，一般为无机保温材料，如岩棉、玻璃棉等。火灾危险性很低，不会导致火焰蔓延。因此，在建筑的内、外保温系统中，要尽量选用A级保温材料。 Class A materials belong to non-combustible materials, generally inorganic thermal insulation materials, such as rock wool, glass wool and so on. Fire hazard is very low and will not cause flame spread. Therefore, in the building's internal and external thermal insulation system, we should try to select A-grade thermal insulation materials. B2级保温材料属于普通可燃材料，一般为有机保温材料，在点火源功率较大或有较强热辐射时，容易燃烧且火焰传播速度较快，有较大的火灾危险。如果必须采用B2级保温材料，需采取严格的构造措施进行保护。同时，在施工过程中也要注意采取相应的防火措施，如分别堆放、远离焊接区域、上墙后立即做构造保护等。 Class B2 thermal insulation material belongs to common combustible material, which is generally organic thermal insulation material. When ignition source power is high or thermal radiation is strong, it is easy to burn and flame propagation speed is fast, so it has greater fire risk. If grade B2 insulation material wasiguan.37ix.com.cnfuheguan.37ix.com.cn qingxijii.07858.net chuanganqij.89ix.comhuganqig.89ix.comfangshuix.89ix.commust be used, strict structural measures should be taken to protect it. At the same time, in the construction process, we should also pay attention to the corresponding fire prevention measures, such as stacking separately, away from the welding area, immediately after the wall to do structural protection, and so on. 在A级不燃材料和B2级可燃材料之间，还有B1级难燃材料，一般为有机保温材料，如聚苯板、聚氨酯板等。B1级和B2级材料之间的燃烧性能也存在很大的差别，下图为聚苯板和聚氨酯板两类材料B1级和B2级外墙外保温系统的防火性能试验对比。 Between Class A and Class B2, there are Class B1 flame retardants, which are generally organic thermal insulation materials, such as polyphenyl board, polyurethane board, etc. There are also great differences in the combustion performance between B1 and B2 grade materials. The following is a comparison of the fire protection performance of B1 and B2 grade exterior wall thermal insulation systems made of polyphenyl board and polyurethane board. |
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