基于仰韶水泥的砂岩石窟裂隙灌浆材料物理力学特性研究  

Study on the physical and mechanical properties of the grouting materials of Yangshao cement applied on the sandstone grottoes cracks

作　　者：赵林毅[1,2] 王旭东 李黎[3] 严绍军 蒋思维 李志鹏[6] 李最雄 方云 

机构地区：[1]敦煌研究院,甘肃敦煌736200 [2]国家古代壁画与土遗址保护工程技术研究中心,甘肃敦煌736200 [3]中国文化遗产研究院,北京100029 [4]中国地质大学(武汉),湖北武汉430074 [5]大足石刻研究院,重庆大足402360 [6]敦煌研究院文物保护技术服务中心,甘肃兰州730000

出　　处：《文物保护与考古科学》2018年第1期47-52,共6页Sciences of Conservation and Archaeology

基　　金：国家科技支撑计划资助(2014BAK16B02);国家文物局重点科研课题资助(20120207);甘肃省基础研究创新群体项目资助(145RJIF336)

摘　　要：为寻找适宜砂岩石窟岩体裂隙灌浆的材料,进行了基于仰韶水泥的砂岩石窟岩体裂隙灌浆材料室内筛选。研究表明,以烧料礓石为胶凝材料,以偏高岭土、石英砂为填料的浆液可作为砂岩石窟裂隙灌浆的初选材料。进一步试验表明,当浆液材料添加总质量10%膨胀剂后,最优的配比为烧料礓石、偏高岭土、石英砂以质量比1∶0.6∶0.4,最佳水灰比为0.5~0.6。针对该配比的灌浆材料开展物理力学特性测试及耐候性试验,结果表明,该种配比的浆液结石体除具有孔隙率大、收缩小、强度好的特点外,还具有较好的抵御温湿度循环、冻融循环及盐碱侵蚀等的能力,是一种较为适宜的砂岩石窟裂隙灌浆材料。研究结果也可为类似石窟岩体裂隙灌浆材料的选择作参考。Based on earlier experiences with Yangshao cement,we did preliminarily laboratory experiments that revealed that a grouting material consisting of hydraulic lime（ obtained from calcinated ginger nuts）,metakaolin and silica sand was ideal for treating the cracks developing in sandstone grottoes. Further research also showed that when the grouting material was mixed with 10% of swelling agent,the optimum mixture ratio of hydraulic lime,metakaolin,silica sand was 1∶ 0. 6∶ 0. 4 and ratio of water to cement was 0. 5 ~ 0. 6 ∶ 1. Physical,mechanical and durability tests on the grouting material were carried out. The results showed that the hardened grout not only had the merits of large porosity,weak shrinkage and suitable strength,but also had high temperature-humidity cycle resistance,freezing and thawing cycle resistance and a low rate of erosion by salt and alkali. The studied material is suitable for the grouting conservation of sandstone grottoes.

关 键 词：仰韶水泥 砂岩石窟 裂隙灌浆 加固材料 特性 

分 类 号：G264.3[历史地理—考古学及博物馆学]