Two problems of aerated concrete in use now

Since 1990s, a series of policies for land protection have been implemented in China: restricting the use of solid clay bricks, popularizing the use of new wall materials which are soil-saving, energy-saving and waste-profiting are the basic contents of wall material reform, while aerated concrete is a new type of wall material, and the product conforms to the characteristics of brick masonry construction. Habits, physical, mechanical and masonry properties can be sintered brick conditions, with a wide range of application prospects. According to the application of aerated concrete for more than ten years, there are still two main problems in practical application. One is people's conceptual problems. Qin bricks and Han tiles have gone through thousands of years and are deeply rooted in the minds of the people. Great perseverance and effort are needed to change the traditional thinking of the people and eliminate all kinds of worries. The two is the application of technical problems. The shrinkage of aerated concrete is relatively large, coupled with the shorter production time, application technology is not popular enough, skilled operators are lack, so in use there are often some common quality defects, mainly wall cracks. According to the investigation and arrangement of wall cracks in our city, it should be said that most types of cracks are basically consistent with the cracks in traditional masonry structures.