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金属矿山 ›› 2012, Vol. 41 ›› Issue (12): 140-143.

• 综合利用 • 上一篇    下一篇

用石英尾砂制备蒸压加气混凝土

王长龙1,2,3,倪文1,2,乔春雨1,2,王爽1,2,吴辉1,2   

  1. 1.北京科技大学土木与环境工程学院;2.金属矿山高效开采与安全教育部重点实验室;3.河北工程大学土木工程学院
  • 出版日期:2012-12-15 发布日期:2012-12-28
  • 基金资助:

    * 国家高技术研究发展计划(863计划)项目(编号:2012AA062405)。

Preparation of Autoclaved Aerated Concrete with Silica Tails

Wang Changlong1,2,3,Ni Wen1,2,Qiao Chunyu1,2,Wang Shuang1,2,Wu Hui1,2   

  1. 1.School of Civil and Environmental Engineering,University of Science and Technology Beijing;2.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines;3.School of Civil Engineering,Hebei University of Engineering
  • Online:2012-12-15 Published:2012-12-28

摘要: 利用秦皇岛鑫华玻璃厂的石英尾砂制备石英尾砂-水泥-石灰体系蒸压加气混凝土,在石英尾砂粉磨至比表面积为321.57 m2/kg,4种原料石英尾砂、石灰、水泥、脱硫石膏的质量比为65∶20∶10∶5,铝粉膏加入量为原料总量的0.06%,水料比为0.57,拌和水温为55 ℃,静停养护温度和时间分别为50±2 ℃和4 h,蒸养压力、温度、时间分别为1.25 MPa、185 ℃、12 h的条件下,制品的强度达到A3.5级,干密度达到B06级。X射线衍射分析和场发射扫描电镜分析结果显示,制品中主要水化产物为托贝莫来石和C-S-H凝胶。

关键词: 石英尾砂, 蒸压加气混凝土, 细度, 原料配比

Abstract: The autoclaved aerated concrete (AAC) of silica tails, cement and lime is prepared with the silica tails from Qinhuangdao Xinhua Glass Factory.Under the conditions of specific surface area of 321.57 m2/kg by grinding of quartz tailings, the mass ratio of 4 kinds of raw materials quartz tailing, lime, cement and desulfurized gypsum 65∶20∶10∶5, aluminum powder addition with total raw materials of 0.06%, the water ratio 0.57, the mixing water temperature at 55 ℃, the static curing temperature at 50±2 ℃ for 4 h, and the steam curing pressure, temperature and time of 1.25 MPa, 185 ℃ and 12 h respectively, the strength of the product reaches A3.5 level and its dry density is at B06 level.X-ray diffraction analysis and field emission scanning electron microscopy analysis indicate that the main hydration masses in the product are tobermorite and C-S-H gel.

Key words: Silica tails, Autoclaved aerated concrete, Fineness, Raw material ratio