1前言我国从1958年开始研制和发展蒸压灰砂砖,目前它是仅次于烧结制品、混凝土砌块(砖)、蒸压加气混凝土砌块的建筑墙体块材。除生产纯正的“砂子+石灰”蒸压灰砂砖(砌块)外,也有一些厂家在砂子和石灰为主要原材料外,掺加其它一些原材料生产“蒸压灰砂砖(砌块)”。据测算,全国目前约有蒸压灰砂砖(砌块)厂近千家,正常生产经营的企业数不低于五百家,是一个不大不小的小行业。特别在一些砂子或尾矿砂资源丰富 1 Foreword China began to develop and develop autoclaved lime-sand bricks in 1958. At present, it is the second largest building wall block after sintered products, concrete blocks (bricks) and autoclaved aerated concrete blocks. In addition to the production of pure “sand + lime” autoclaved lime sand bricks (blocks), there are also some manufacturers in the sand and lime as the main raw material, mixed with some other raw materials production “ autoclaved lime sand bricks (blocks )”. According to calculations, there are currently nearly 1,000 autoclaved sand-lime brick (block) plants in the country, and the number of normal production and operation companies is not less than 500, which is a small industry. Especially rich in some sand or tailings resources