Thermal insulation material life short hidden danger


Release time:

2015-09-02

Author:

New Earth Group

Source:

Thermal insulation material life short hidden danger

The fire case some time ago caused peopleThermal insulation materialof fire performance concerns. The person concerned said that it is not the biggest problem of thermal insulation materials that are easy to cause fire, and the life of thermal insulation materials is worth pondering.
Take EPS (expandable polystyrene) as an example, the state stipulates that its service life must reach 25 years. In other words, as long as the EPS board purchased by the construction unit can be used for 25 years, it is considered a qualified product. What is the life span of a building? The average civil building is 70 years, and other types of buildings may have a longer life span. InBefore the large-scale urbanization process began, there were not many high-rise buildings in our country, and the bungalow area accounted for the largest share of the total construction area in the country, and the use of thermal insulation materials in buildings was not common. Really began to pay attention to the use of exterior insulation materials in recent years, so its impact has not yet fully revealed. obviouslyIt is easy to see that after 25 years of use, there will be two problems: one is who pays the bill. First of all, the real estate business will not bear the responsibility. They did it in accordance with state regulations and were not at fault. Let the residents pay? The residents will say why they let me pay. I bought a house with insulation function. AnotherWhat is caused by white pollution. There is already a lot of construction waste. If you add in the insulation materials such as EPS boards that have been removed and replaced due to expiration, the amount of construction waste in my country will surge. The non-degradable nature of insulation materials is also very scratching, and simple landfill will cause serious pollution to the environment. These twoIt is only a matter of time before the problem emerges.
In view of the many problems of thermal insulation materials, people familiar with the matter have summed up two solutions: one is to improve it and make prefabricated parts for installation; The second is to put it aside and look for other substitute materials. Should be planned and organized to vigorously develop pressurized aerated concrete, sintered thin-walled porous insulation block, composite insulation concrete masonryBlock and other inorganic insulation materials. These insulation materials have high strength and low shrinkage value, and some have formed a certain industrial scale, and some are planning and developing. These materials themselves can be used as walls, which have the same service life as buildings. They are convenient to use materials and save resources. The cost per cubic meter is only 200 or 300 yuan, which is higher than most.Organic materials are cheap. Like Chongqing, Guizhou, Shandong and other places, a lot of sand and gravel, the production of building blocks is very economical and convenient. In general, it is necessary to study and promote various schemes. An important reason for the lack of promotion of concrete blocks is that the occupancy rate will be affected. Why do people like to use exterior walls?External insulation materials instead of concrete blocks directly build walls? This is because increasing the thickness of the wall will reduce the occupancy rate. It is tempting to emphasize the rate of housing, and no buyer does not want to spend the same amount of money to buy the largest possible house. Developers cater to this mentality and try to build thin walls, which also contributes to the externalThe popularity of external wall insulation materials. We specify the thermal conductivity of the wall, but we do not specify the thickness of the wall. The hype in the market is about the occupancy rate, and the propaganda is that thicker walls will reduce the occupancy rate. According to the traditional practice, the thickness of the wall in each direction is different. Since the focus on occupancy rates, the exterior walls of buildings have beenThinning down by all means.
The thickness of the outer wall is slightly increased, and the insulation level will be improved accordingly. Improve the level of insulation is actually very simple, as long as the wall thick some on the line. Or with sintered thin-walled porous insulation block, composite insulation concrete block and other direct masonry exterior wall, is also an effective insulation method. If you spend all your thoughts on securityOn the warm plate, the train of thought will be limited. Should be multi-angle, multi-level, according to local conditions to develop specific building insulation program.
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