After autoclaved sand-lime brick out of the kettle temperature, humidity reduction and carbonization Wuhan sand-lime brick, in the course of the general trend is the volume shrinkage. Shrinkage variation is: the first three days of the vessel after the maximum contraction, average value of daily shrink 0.019mm / m; 3 ~ 30 Day Average daily shrinkage is 0.005mm / m; 30 days later the average daily value of contraction 0.003mm / m; in about 60 days, the average daily value of less than contraction 0.001mm / m, until it is stable. Wuhan in different areas using sand-lime brick model, due to temperature, humidity, different, the same sand-lime brick autoclaved different shrink their balance value. At the same time after the temperature, humidity changes still have to change the volume. Compared with the sintered common brick, shrinkage of autoclaved lime-sand brick masonry is much greater. Further influencing factors are not the same variation of Wuhan sand-lime brick offer, this special attention should be applied. ② reasonable set of joints. GB50003-2001 provides for a maximum distance of autoclaved sand-lime brick masonry joints should take sintered common brick masonry joints maximum distance of 0.8 times the price of sand-lime brick Wuhan to reduce the expansion joint spacing. ③ Since the bulk shrinkage caused by shrinkage in masonry interior walls have a certain shrinkage stress, when the tensile shear strength of the masonry will be enough to resist shrinkage stress cracks. Therefore, the stress concentration at the site such as masonry above windows and doors over and under the sill beam welded steel mesh should be set to resist shrinkage stress of brick. Also when the length of such a wall can easily be pulled greater than 5m, and therefore should be properly reinforced. Specific approach is: doors and windows through the inner horizontal beam above the mortar joint and windows Paragraph 1 and the first two levels of gray seam welded steel mesh in the design or 2Φ6 steel, between which extends into both sides of the window wall is not less than 600mm; when the length of the solid wall of more than 5m, set 2 to 3 welded steel mesh or through long horizontal bars 3Φ6 wall in each high school, their vertical spacing of 500mm. Sand-lime brick masonry Wuhan | Wuhan sand-lime brick | cement provided by the Wuhan Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) strong, credible, in Wuhan of cement and related products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Wuhan cement into the brilliant and you work for a better future!