基于TEOS原位交联加固对土遗址干湿耐久性能研究  

Study on Durability of Earthen Ruins Based on TEOS in Situ Cross-linking Reinforcement Effect under Wetting and Drying Cyclic

作　　者：汪娟丽[1] 李玉虎[1] WANG Juan-li LI Yu-hu(Engineering Research Center of Historical and Cultural Heritage Protection, Ministry of Education, Shaanxi Normal University, Shaanxi Xi＇an 710119, China)

机构地区：[1]陕西师范大学材料科学与工程学院历史文化遗产保护教育部工程研究中心,陕西西安710119

出　　处：《广州化工》2017年第7期78-81,共4页GuangZhou Chemical Industry

基　　金：中国博士后科学基金(2013M542322);中国博士后科学基金(2014T70902);中央高校基金(GK201603106)

摘　　要：为了研究TEOS原位交联加固对土遗址干湿循环耐久性能的影响,利用SEM、LPSA、MIP等分析方法对重塑土样在经历干湿循环后的微观形貌、粒径、孔径、力学性能等进行了研究。实验结果表明,随着干湿循环次数的增大,未加固重塑土样微观结构受到破坏,力学性能降低,耐久性变差;而TEOS原位交联加固土样仍能保持土壤团粒原有的孔结构及力学性能,这一规律对预防土遗址中以水为载体的病害防治有重要的指导意义。In order to study the durability properties of the earthen ruins by TEOS in situ cross-linking reinforcing effect under drying- wetting cyclic, using scanning electron microscopy （ SEM ） , laser particle size analyzer （ LPSA ） , mercury porosimetry （NIP）, and so on, mechanical properties of the unreinforeed and reinforced remolded sample such as microscopic morphology, particle size, pore size were studied after drying and wetting cycles, in order to reveal the earthen ruins by TEOS reinforced to resist the erosion of natural environment. The experimental results showed that the microstrueture of unreinforeed remolded sample was damaged, mechanics performance was decreased and durability became weaken with the increase of wetting-drying cycles. However, the reinforced remolded sample with TEOS remained original pore structure and mechanical properties. The above research results had certain directive significance to preventing earthen ruins disease due to water.

关 键 词：TEOS 干湿循环 土遗址 耐久性 

分 类 号：TB302[一般工业技术—材料科学与工程]