According to GB50003-2001 "masonry structures design" can be seen, the design value of the compressive strength of autoclaved lime sand brick and sintered common brick compressive strength design values ??are the same, the difference is autoclaved sand-lime brick intensity level does not C30; when the span of not less than 7.5m of sand-lime brick masonry under the beam adjustment factor of 0.9, which is the difference between sand-lime brick waterproof and sintered common brick, construction quality control level at Level B sand-lime brick density, GB50003-2001 given autoclaved sand-lime brick design value of shear strength and shear strength of sintered common brick design value, it is easy to see the shear strength of autoclaved sand-lime brick is 0.7 times the sintered common brick. 1. Material: clay, shale brick, coal gangue brick, fly ash bricks, sand-lime brick, concrete brick. 2, according to the porosity of points: bricks (no holes or holes less than 25% of the brick), Brick (porosity equal to or greater than 25%, the small size of the hole and more quantity of bricks, commonly used in load-bearing parts of the bulk density of sand-lime brick high intensity level) 3, hollow bricks (porosity equal to or greater than 40%, the size of the hole and a small number of large bricks, commonly used in non-load-bearing parts, the low intensity level) 4, according to the production process points: Brick (after roasting brick), autoclaved brick, steam-cured brick. 5, divided by sintering or not: unburned (cement brick) and fired brick (Brick) bulk density sand-lime brick, cement Wuhan (certified), Enshi sand-lime brick 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.