摘要
为了不破坏黄土本身的微细孔结构,进行了低温(200℃)水热合成黄土为多孔材料的研究。研究结果表明,Ca(OH)2添加量、水热合成时间对水热合成后样品的抗折强度有很大影响。样品强度增加的主要因素是托勃莫来石的生成。水热合成过程中,由于溶解/析出以及晶体生成等原因,可以产生大量微细孔,这使得控制多孔材料的孔径大小与分布成为可能。
In order not to undermine the pore structure of loess,hydrothermal synthesis of porous materials from loess at low temperature（200℃） has been carried out in this paper. The results showed that Ca（OH）2 content and curing time had a great effect on flexural strength of specimens after hydrothermal synthesis. The increase in flexural strength of specimens after hydrothermal synthesis was mainly due to the formation of tobermorite. As dissolution/precipitation,crystal formation or some other faetors,a large number of pores produced during the hydrothermal process,which made it possible to control the pore size and distribution of the porous materials.
出处
《新型建筑材料》
北大核心
2010年第4期1-4,12,共5页
New Building Materials
基金
国家自然科学基金项目(50872096)
上海市浦江人才计划项目(08PJ1409800)
关键词
水热合成
黄土
抗折强度
托勃莫来石
介孔材料
hydrothermal synthesis, loess
flexural strength
tobermorite
porous materials
