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 Jiangxia gray sand pile to reduce the expansion joint spacing. ③ Since the block wall material shrinkage caused by shrinkage and shrinkage stress certain Xinzhou gray interior masonry sand pile in buying, when a tensile shear strength of masonry will be enough to resist shrinkage stress cracks. So Hongshan gray sand pile manufacturers in stress concentration sites such as doors and windows through the masonry above and under the sill beam welded steel mesh should be provided 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. Product quality must be qualified gray brick sand pile, after the test should be used to have a factory quality certification and test report card. Sampling tests before use in accordance with different varieties and specifications, origin, batch. Brick project will test for compressive strength. As results of the tests fail, it should take a double retest samples. To fail, it is determined that the acceptance of the batch to be ineligible. There are the following circumstances, there is doubt as to its material for load-bearing structures, it should retest. For substandard materials may be used, and should make the appropriate treatment report. For brick need to take certain action again after technology used, should first meet the technical requirements, and there is technical director after approval to use the new continent gray sand pile Wanted _ Wuhan Cement (certified) _ Hannan gray sand pile By Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) was Wuhan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Wuhan cement leadership with the staff warmly welcome all inquiries negotiations to create a better future Wuhan cement.