| 钙基液态水硬性加固剂用于潮湿土遗址的加固保护 |
| |
| 引用本文： | 魏国锋,张秉坚,杨富巍,胡宝忠,陈兵,王旭东.钙基液态水硬性加固剂用于潮湿土遗址的加固保护[J].岩土力学,2012,33(3):702-712. |
| |
| 作者姓名： | 魏国锋 张秉坚 杨富巍 胡宝忠 陈兵 王旭东 |
| |
| 作者单位： | 1. 浙江大学 文物与博物馆学系，杭州 310027；2. 安徽大学 历史系，合肥 230039；3. 敦煌研究院，甘肃 敦煌 736200 |
| |
| 基金项目： | 国家科技支撑计划资助项目(No.2010BAK67B16);浙江省文物保护专项(浙财教[2010]264号);中国博士后科学基金资助项目(No.20100471728) |
| |
| 摘 要： | 通过对钙基液态水硬性加固剂的研制，对潮湿环境土遗址的加固保护进行了探索性研究。X射线衍射（XRD）和扫描电镜（SEM）分析结果表明，已成功制出了潮湿土样水硬性加固所需的纳米材料。同时，研究发现，氢氧化钙在650 ℃下用马弗炉煅烧1.5 h后，可得到直径约50 nm、长度约200 nm的针状二次生石灰；这种二次生石灰经水消化后，会成为粒径在200～300 nm左右、大小十分均匀的扁平椭圆状纳米氢氧化钙颗粒；氧化钙在密封陈化一段时间后，也可使氢氧化钙的粒径达到纳米级。土样加固试验的结果显示，纳米石灰的乙醇分散液的渗透性优于分析纯氢氧化钙，钙基水硬性加固剂对潮湿土样的加固效果较为明显，有望成为一种适合于潮湿环境土遗址加固的新型材料。
|
| 关 键 词： | 土遗址 潮湿环境 水硬性 加固 |
| 收稿时间： | 2010-10-08 |
Consolidation of historical earthen sites under moisture circumstance using calcium-based hydraulic consolidant |
| |
| WEI Guo-feng
,
ZHANG Bing-jian
,
YANG Fu-wei
,
HU Bao-zhong
,
CHEN Bing
,
WANG Xu-dong.Consolidation of historical earthen sites under moisture circumstance using calcium-based hydraulic consolidant[J].Rock and Soil Mechanics,2012,33(3):702-712. |
| |
| Authors: | WEI Guo-feng ZHANG Bing-jian YANG Fu-wei HU Bao-zhong CHEN Bing WANG Xu-dong |
| |
| Institution: | 1. Department of Cultural Relics and Museology, Zhejiang University, Hangzhou 310027, China; 2. Department of History, Anhui University, Hefei 230039, China; 3. Dunhuang Academy, Dunhuang, Gansu 736200, China |
| |
| Abstract: | On the basis of preparation and characterization of calcium-based hydraulic consolidant,this paper makes a preliminary study of consolidation conservation of historical earthen sites under moisture circumstance.Analytic results of scanning electron microscope and X-ray diffractometry show that Ca(OH)2 are transformed into a kind of acicular secondary CaO with diameter 50 nm and length 200 nm after being calcined,and this nano-sized secondary CaO are transformed into oval plate-like Ca(OH)2 with size 200-300 nm after being slaked.Meanwhile,research results indicate that calcium hydroxide crystals undergo both substantial size reduction and clear morphological change,developing nanometer,plate-like and acicular crystals upon aging.Results of consolidation experiment of moist earthen samples reveal that permeabilities of nanometer lime-alcohol dispersions are superior to that of analytically pure Ca(OH)2-alcohol dispersions,and consolidation effects of calcium-based hydraulic consolidant are obvious.It is possible that calcium-based hydraulic consolidant will become a new consolidation material used for conservation of historical earthen sites under moisture circumstance. |
| |
| Keywords: | historical earthen sites moisture circumstance hydraulic consolidation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
