Autoclaved aerated concrete block lightweight brick A3.5-A7.5 strength B05-B07 bulk density fireproof insulation

Description :

  Autoclaved aerated concrete block is a new type of lightweight wall material that mainly solves the problems of heavy weight, low construction efficiency, and poor insulation performance of traditional clay bricks. It is made through high-temperature and high-pressure steam curing technology, containing a large number of uniformly sealed air holes inside, and has excellent characteristics such as light weight, thermal insulation, sound insulation, and sound absorption. Typical working conditions are applicable to infill walls in frame structures, non load bearing interior partitions, and load-bearing walls in low rise buildings. This product conforms to the trend of green building development, can effectively reduce the overall load of buildings, reduce foundation costs, and improve living comfort. It is an ideal choice to replace solid clay bricks in modern construction engineering.

  The specifications and sizes of autoclaved aerated concrete blocks are diverse, with a common length of 600mm, height of 200-300mm, and thickness ranging from 60mm to 240mm. There are multiple series, such as 600 * 300 * 100, 600 * 240 * 200, etc. Special specifications support customization. The product strength grades include A3.5, A5.0, A7.5, and the dry density grades are B05, B06, and B07, meeting different structural design requirements. Its fire resistance performance is excellent, with a fire resistance limit of over 4 hours, reaching the national first-class fire protection standard. Implementing the national standard GB/T 11968-2020, strict quality testing is carried out to ensure small dimensional deviations, smooth appearance, and ease of subsequent plastering and decoration construction, ensuring the stability of project quality.

  When selecting autoclaved aerated concrete blocks, the strength and density grade should be determined based on the wall function and stress conditions. A3.5/B05 grade is suitable for non load bearing interior partitions, emphasizing lightweight and insulation; A5.0/B06 grade is suitable for exterior wall filling and general interior walls, balancing strength and insulation; A7.5/B07 grade is suitable for areas with high strength requirements or low rise load-bearing walls. It should be noted that the material has a high water absorption rate, and the moisture content should be controlled during construction to avoid direct use in long-term immersion environments or chemical erosion sites. Compared with ordinary concrete blocks, it has better processing performance and can be sawed and drilled, but its impact resistance is slightly weaker. Therefore, structural measures should be considered in the design.

  When installing autoclaved aerated concrete blocks, a thin layer of special adhesive should be used for masonry to ensure the fullness of the mortar joints and reduce thermal bridging effects. A gap should be reserved at the connection between the top of the wall and the beam slab, and flexible materials should be used to fill it after the settlement is stable to prevent cracks from occurring. In daily maintenance, attention should be paid to moisture-proof treatment of walls, especially in damp areas such as kitchens and bathrooms, where a waterproof layer needs to be installed. Common faults such as wall cracking are often caused by shrinkage deformation or foundation settlement. During construction, the masonry speed and maintenance time should be strictly controlled. Regular inspection of wall integrity and timely repair of damages can extend the service life and maintain the aesthetic and functional stability of the building.

Ningbo Zhongmao Hangzhou Bay New Wall Materials Co., Ltd. Official website:www.bid-china.cn

Ningbo Zhongmao Hangzhou Bay New Wall Materials Co., Ltd. 24-hour contact phone number: 13586607561

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