金沙土遗址加固材料的制备及性能研究
Preparation and performance study of the reinforcement material for Jinsha archaeological site
李小洁 1万涛 1林金辉 1肖维兵1
作者信息
- 1. 成都理工大学,材料与化学化工学院,成都,610059
- 折叠
摘要
为了得到综合性能较好的成都金沙土遗址加固材料,采用自由基溶液共聚合和溶胶-凝胶法制备了丙烯酸-有机硅-环氧树脂三元体系的新型有机/无机杂化土遗址保护材料,并将其应用于成都金沙遗址土样的加固,实验结果表明,当TEOS含量为20%时,无机相尺寸为20～70 nm,平均粒度为45 nm,且分散均匀,无机和有机相之间以化学键相连接.增大TEOS的含量可以提高加固材料的耐光老化性和加固土的综合性能(如耐溶剂性、抗水解性等),同时降低加固土的渗透速率,SEM表明加固材料有效地填补了土中的孔洞,降低了孔隙率,并起到了支撑和加固的作用.
Abstract
To obtain the consolidates with good overall performances for the reinforcement of Jinsha archaeological site in Chengdu,a new kind of organic-inorganic acrylic-silicon-epoxy hybrid material was prepared by radical solution copolymerization and sol-gel process. The results show that when the content of TEOS is 20% , the size of inorganic phase is in a range of 20 ～70 nm; the mean particle size is 45 nm, and particles distribute evenly within the polymeric matrix; the inorganic phase and organic phase are linked by chemical bonding. With the increase of TEOS content, the UV light induced aging-resistance of the hybrid material is upgraded , and properties of the consolidated soil treated by the hybrid material, such as solvent-resistance and water-resistance are increased, while the permeating rate is decreased. SEM indicates that the soil-strengthening agent can effectively fill up the cavities in the soil and decrease the porosity ratio, which can be used as a good soil-strengthening agent for Jinsha archaeological site.
关键词
杂化材料/土遗址/溶胶-凝胶法/加固/共聚Key words
hybrid materials/earthen archaeological site/sol-gel/consolidation/copolymerization引用本文复制引用
基金项目
国家科技攻关重点项目(2004BA810802)
出版年
2009
NETL
NSTL
维普
万方数据