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

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一凝胶法制备了丙烯酸一有机硅一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20-70nm，平均粒度为45nm，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．

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 distrib- ute 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 wa- ter-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.