Hydrophobicity and carbonation treatment of earthen monuments in humid weather condition  

作　　者：LI Min ZHANG HuYuan 

机构地区：[1]Key Laboratory of Mechanics on Disaster and Environment in Western China,Ministry of Education,Lanzhou University,Lanzhou 730000,China [2]School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China

出　　处：《Science China(Technological Sciences)》2012年第8期2313-2320,共8页中国科学（技术科学英文版）

基　　金：supported by the National Key Technology R & D Program in the 11th Five Year Plan of China (Grant No. 2010BAK67B16);the Outstanding Doctorial Research Scholarship of Lanzhou University (Grant No. )

摘　　要：Water stability of soil is crucial to the durability of earthen monuments,especially those located in the humid weather condition.This paper discusses the selection reason of materials(tung oil and quicklime) for earthen monument treatment,and then validates the applicability of these materials with tests of soil-water characteristic curve(SWCC),aggregate stability test(AST) and scanning electron microscope(SEM).The soil tested was sampled from Da Bao'en temple in Nanjing,Jiangsu province,China.The test results indicate that the carbonation reaction of quicklime offers a favorable environment for the formation of tung oil film.Meanwhile,the regulatory function of tung oil restricts the crystallinity of calcium carbonate(CaCO3) and forms fine crystals.Soil treated with both of tung oil and quicklime has good water repellency and aggregate stability without obvious changing in aesthetic appearance.Hydrophobicity and carbonation treatment can be applied prospectively in the conservation of earthen monument located in humid weather condition.

关 键 词：water repellency CARBONATION earthen monuments SWCC AST SEM tung oil QUICKLIME 

分 类 号：TU46[建筑科学—结构工程]