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High performance foam concrete blocks
In recent years, the technology of the foam concrete insulation products has been developing constantly, particularly, the production and application of high performance blocks have become a hot spot topical in the industry. The key technical property of the high-performance foam concrete self-insulating blocks is that the thermal indicators of the walls and coverings, constructed from them, can comply with the existing standards of the building energy-saving forms, without any other insulations. It is typically less than 700kg/m3 , less than 0.15W/(m•K), and it can meet the building energy-saving standards in various climate regions when it is 200-400mm.
The main features of high performance foam concrete block products are:
(1) Used for exterior walls and roofs to achieve self-insulation
(2) Used for interior walls, it can achieve good sound insulation and thermal insulation
(3) Thin walls can increase the usable area of the building
(4) Small size, light weight, easy to construct
(5) Avoid the formation of wall cracks and reduce wall cracking
(6) Effectively reduce the building’s own weight and achieve lightweight construction
At present, the performance of high-quality high-performance foam concrete blocks in the industry can reach a high level in all aspects. The main performance of medium and high-density high-performance foam concrete blocks has been able to surpass its main competitor, aerated concrete blocks.
The crack resistance of high-performance foam concrete blocks produced by advanced enterprises in the industry has been greatly improved, and they will not crack under the condition of rapid temperature changes. In terms of low-density products, high-performance foam concrete blocks can reach a dry density of 160kg/m3 , a thermal conductivity of 0.045~0.05 W/(m•K), and a strength of 0.6MPa, which is highly competitive among inorganic thermal insulation products . At present, the high-performance foam concrete blocks of advanced domestic enterprises are ahead of similar foreign products in terms of strength performance.