硅酸盐通报2018，Vol.37Issue(3)：800-804,5.
钙硅比对生物质灰渣加气混凝土性能的影响
Influence of Calcium-Silicon Ratio on Performance of Biomass Ash Aerated Concrete
摘要
Abstract
Biomass ash contains high SiO 2and CaO.It is mixed with cement,lime and so on according to a certain proportion to prepare biomass ash aerated concrete blocks.Calcium-silicon ratio of aerated concrete was adjusted to research its influence on hydration products, mechanical properties and microstructure by changing the relative content of biomass ash,fly ash and lime.Results show that with increase of calcium-silicon ratio,dry density of biomass ash aerated concrete blocks gradually increase. When the calcium-silicon ratio is 0.86, the intensity reached its peak, its compressive strength and flexural strength is 2.5 MPa and 1.8 MPa, respectively.And the production of tobermorite is also the largest.Dry shrinkage figure also shows that biomass ash aerated concrete blocks have excellent volume performance when the calcium-silicon ratio is 0.86, and its maximum dry shrinkage is 0.44 mm/m, better than national standard(0.5 mm/m).Electron microscopy map of hydration products shows that with increase of calcium-silicon ratio, hydration products morphology of biomass ash aerated concrete blocks transformed from elongated needle-like structure to lamellar structure.关键词
生物质灰渣/钙硅比/托勃莫来石/干燥收缩/加气混凝土砌块Key words
biomass ash/calcium-silicon ratio/tobermorite/dry shrinkage/aerated concrete block分类
建筑与水利引用本文复制引用
蔡星,奚新国,吕洪杰,高欣..钙硅比对生物质灰渣加气混凝土性能的影响[J].硅酸盐通报,2018,37(3):800-804,5.基金项目
国家自然科学基金(21403184,51772258) （21403184,51772258）
国家重点研发计划项目(2016YFC0209202) （2016YFC0209202）
江苏省高校自然科学研究项目(14KJB150025,15KJA430007,14KJB430023) （14KJB150025,15KJA430007,14KJB430023）
中国博士后科学基金(2014M561622) （2014M561622）
江苏省生态建材与环保装备协同创新中心项目(GX2015102,GP201502) （GX2015102,GP201502）
2016年度江苏省省级新型墙体材料专项基金(201614) （201614）
江苏省高等学校大学生创新创业训练计划(201610305002Z) （201610305002Z）
盐城市农业科技创新专项引导资金项目(YK2016031) （YK2016031）
