加气混凝土砌块用生石灰的改性研究  

Study on Modification of Quicklime for Aerated Concrete Blocks

作　　者：张美霞 杨朝刚 张慧月 赵尉廷 ZHANG Meixia;YANG Chaogang;ZHANG Huiyue;ZHAO Weiting(Baowu Environmental Science Shanxi Resource Recycling Co.,Ltd.,Taiyuan 030003,China)

机构地区：[1]宝武环科山西资源循环利用有限公司,太原030003

出　　处：《中国资源综合利用》2023年第12期25-27,共3页China Resources Comprehensive Utilization

基　　金：山西省重点研发计划项目“粉煤灰基高强地聚物预制构件及保温材料开发与应用”。

摘　　要：生石灰是粉煤灰加气混凝土的主要原料,生石灰活性钙含量(CaO)与消解时间的关系密切。CaO含量越高,消解时间越短。生石灰消解时间短,会造成铝粉发气与料浆稠化。因此,本文开展条件试验,研究硅油改性生石灰的可行性。结果发现,甲基含氢硅油可延迟生石灰与水的放热反应,生石灰中添加适量的甲基含氢硅油,可延长生石灰消解时间,并优化气孔结构,提高成品强度。Quicklime is the main raw material for fly ash aerated concrete,and the active calcium content(CaO)of quicklime is closely related to the digestion time.The higher the CaO content,the shorter the digestion time.Short digestion time of quicklime can cause aluminum powder to vaporize and slurry to thicken.Therefore,this paper conducts conditional experiments to study the feasibility of silicone oil modified quicklime.It is found that methyl hydrogenated silicone oil can delay the exothermic reaction between quicklime and water,and adding an appropriate amount of methyl hydrogenated silicone oil to quicklime can prolong the digestion time of quicklime,optimize the pore structure,and improve the strength of the finished product.

关 键 词：加气混凝土砌块 生石灰 改性 消解时间 甲基含氢硅油 

分 类 号：TU578.1[建筑科学—建筑技术科学]