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外墙外保温防火不得不知的三大误区有哪些
来源: 日期:2018-11-27 发布人:admin

外墙外保温防火不得不知的三大误区有哪些

What are the three major misunderstandings we have to know about exterior thermal insulation and fire prevention

一:严厉依照欧美规范进行分级和规范

1. Classification and regulation in strict accordance with European and American norms

该专家以为,如能严厉选用欧美分级规范及相关规定也是比较抱负的,但我国现在的实际情况是不容许的。该专家指出,欧美等发达国家对外墙保温的研讨现已近半个世纪,在根底理论、实验研讨、实验室测验目标与实际工程运用对照等方面做了很多作业,打下了较好的根底,并且从他们的起点看,要点强调了以人为本、安全榜首的指导思想,是我们应该认真学习和借鉴的。因而,如能直接选用也是比较抱负的,但我国的现状也有必要加以考虑。我国现在墙体保温很多选用有机可燃保温资料(EPS、XPS、PU等),十分缺乏质量过关的不燃保温资料如矿(岩)棉板,并且由于我国大部分修建是中高层,假如彻底依照欧美国家规范规范履行,将有机保温资料约束在22米以下,则有机保温资料将严重过剩而不燃资料又供应不足,会严重影响我国修建节能作业的开展。

According to the expert, it is also ambitious to strictly select European and American grading standards and related regulations, but the actual situation in China is not allowed. The expert pointed out that the research on external wall insulation in developed countries such as Europe and the United States has lasted nearly half a century. A lot of work has been done in the aspects of fundamental theory, experimental research, comparison between laboratory test objectives and practical engineering application, which has laid a good foundation. From their starting point, the key points are people-oriented and safety first. The guiding ideology is that we should earnestly study and draw lessons from it. Therefore, if we can choose it directly, we are quite ambitious, but it is necessary to consider the current situation of our country. At present, many wall insulation materials in our country choose organic flammable insulation materials (EPS, XPS, PU, etc.). There is a great lack of non-flammable insulation materials such as mineral (rock) cotton boards with good quality. Because most of our country's construction is middle and high-rise, if they are fully implemented in accordance with the norms of European and American countries, the organic insulation materials will be restricted below 22 meters, then they are organic. Thermal insulation materials will be excessive and non-combustible materials will be inadequate, which will seriously affect the development of energy-saving construction in China.

二:处理施工阶段的火灾隐患即可处理外保温防火问题

2. To deal with the hidden fire hazards in the construction stage, we can deal with the problem of external thermal insulation and fire prevention.

有一种观念以为:现有外保温修建工程发作火灾大部分为施工现场火灾导致,而运用中的外保温修建工程火灾事例很少,处理施工阶段的火灾隐患即可确保外保温的防火安全性。

One idea is that most of the fires in exterior insulation construction projects are caused by construction site fires, while there are few fire cases in exterior insulation construction projects in use. The fire safety of exterior insulation can be ensured by dealing with hidden fire hazards in construction stage.

对此,该专家则以为,从重要性和长期性而言,处理修建物运用进程中的火灾隐患是防火安全的核心。他指出,在国内现有外保温工程的火灾中,大部分发作在施工进程中,外保温修建物运用进程中的火灾事例相对较少。原因在于施工进程中有机保温板裸放,无任何保护层,施工进程常遇动火交叉作业,易发作火灾。但很少有人意识到,运用中的修建发作火灾时,防火性差的外保温体系对于火灾有促进作用。

In this regard, the expert believes that, in terms of importance and long-term, dealing with hidden fire hazards in the process of building use is the core of fire safety. He pointed out that most of the fires in the existing external thermal insulation projects occurred in the construction process, and there were relatively few fire cases in the application process of external thermal insulation buildings. The reason is that the organic thermal insulation board is bare in the construction process, without any protective layer, the construction process often encounters cross-fire operation, which is prone to fire. However, few people realize that the external thermal insulation system with poor fire resistance can promote the fire when the fire breaks out in the construction in use.

A1级防火保温材料

该专家强调,施工现场火灾是有必要要提高注重并予以处理的,但处理修建物运用进程中火灾隐患是防火安全的核心。这主要是根据以下两个因素:一是施工进程中发作火灾时触及人员少,修建物内易燃、易爆物品少,逃生渠道多,救援难度小。而修建物运用进程中发作的火灾恰恰相反,一旦发作火灾,人员和产业安全及消防的救援才能将面对重大检测。二是外保温施工周期短,一般不超越3个月,而修建物的运用寿命通常在50年以上,因而,就人员与产业安全的重要性和修建物运用的长期性而言,减少修建物运用进程中火灾的伤害就显得尤为重要。

The expert emphasized that it is necessary to pay more attention to and deal with the fire at the construction site, but dealing with the hidden fire hazards in the process of building application is the core of fire safety. This is mainly based on the following two factors: first, in the process of construction, when a fire breaks out, fewer people are touched, fewer flammable and explosive materials are in the building, more escape channels and less difficulty in rescue. On the contrary, fires occur in the process of building use. Once a fire breaks out, people and industry safety and fire rescue will face major testing. Second, the construction period of external thermal insulation is short, usually not more than 3 months, and the service life of buildings is usually more than 50 years. Therefore, in terms of the importance of personnel and industrial safety and the long-term use of buildings, it is particularly important to reduce fire damage in the process of building application.

三:只规定简单防火结构,不进行防火分级

3. Simple fire prevention structure is stipulated, and no fire prevention classification is carried out.

有观念以为,只对有机保温资料体系在24米以上运用时,每一层或两层添加一道防火隔离带,不对外保温体系进行防火分级。

Some people think that when the organic thermal insulation data system is only used over 24 meters, a fire-proof isolation belt is added to each or two layers, and the fire-proof classification of the external thermal insulation system is not carried out.

对此,该专家以为,该观念不够体系科学。首要,假如只是针对聚苯板薄抹灰体系,虽然比欧美国家规范要求大大放松,但最起码是“有比没有强”,在操作上也是能够履行的。但假如写入具有权威性的规范中,这样的做法就太不体系、不科学了。由于,没有分级规范、实验方法、断定目标,就不可能对各类保温体系的防火性能进行体系点评,这样不只不能将规程中现已包括的各类外保温体系的防火性能进行有用的和体系的点评,更不能给未来新研发的外保温体系提供研讨方向和进行合理、有用和体系的点评。

In this regard, the expert believes that the concept is not systematic and scientific. Above all, if only for the thin plastering system of polyphenyl board, although the requirements of European and American standards are greatly relaxed, but at least it is "better than no" and can be implemented in operation. But it would be too unsystematic and unscientific to write into authoritative norms. Because there is no grading standard, experimental method and determination target, it is impossible to comment on the fire protection performance of all kinds of thermal insulation systems systematically. In this way, it is not only impossible to make useful and systematic comment on the fire protection performance of all kinds of external thermal insulation systems already included in the regulations, but also impossible to provide new research and development of external thermal insulation systems in the future. Discuss the direction and make reasonable, useful and systematic comments.

一起,该专家指出,仅有防火隔离带不能处理外保温防火的悉数问题。首要火灾发作的3个时段中,发作最频繁的时段是施工阶段。该阶段发作火灾时通常在面层施工之前,所以,火焰有可能经过防火隔离带直接突击有机保温资料表面,一样能够形成火势延伸。其次,防火隔离带与有机保温资料之间材质差异导致面层裂缝的几率加大,带来新的隐患,彻底成熟的防火隔离带技能需要经过很多的实验研讨加以确认。

Together, the expert pointed out that only the fire isolation belt can not deal with all the problems of external thermal insulation and fire prevention. Among the three periods of primary fire attack, the most frequent one is the construction stage. When a fire breaks out in this stage, it usually occurs before the construction of the surface layer. Therefore, the flame may directly attack the surface of the organic thermal insulation data through the fire-proof isolation zone, which can also form a fire extension. Secondly, the material difference between the fireproof isolation zone and the organic thermal insulation material increases the probability of surface cracks and brings new hidden dangers. The thoroughly mature fireproof isolation zone skills need to be confirmed through many experimental studies.

综上所述有山东广日建材有限公司提供,想了解更多A1级防火保温材料知识,欢迎关注我们的网站:谢谢支持!

In summary, all the above-mentioned materials provided by Shandong Guangri Building Materials Co., Ltd. would like to know more about A1 class fire and thermal insulation materials. Welcome to pay attention to our website: . Thank you for your support!


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