摘要
目前国内外用于评价岩样风化程度的方法有许多种,但这些方法大多为定性的。提出基于自由吸水率来快速、定量评价岩样的风化程度。首先定义岩样的劣化指数为风化岩样的自由吸水率与新鲜岩样自由吸水率的比值。利用劣化指数的值来快速、定量评价风化岩样的风化程度。以山西大同云冈石窟砂岩和承德避暑山庄砂岩、凝灰岩为例,测量计算了风化剥落岩样的劣化指数,并评价了石质文物的风化程度。
At present,there are many methods for evaluating weathering degree of rock samples at home and abroad,but most of them are qualitative.In this paper,a rapid and quantitative evaluation of weathering degree of rock samples is proposed based on free water absorption.Firstly,the deterioration index of rock samples is defined as the ratio of free water absorption of weathered rock samples to that of fresh rock samples.The weathering degree of weathered samples can be rapidly and quantitatively evaluated by the value of deterioration index.Taking Yungang Grottoes sandstone in Datong,Shanxi and Chengde Summer Resort sandstone and tuff as examples,the deterioration index of weathered and exfoliated samples was measured and calculated,the weathering degree of stone cultural relics was also evaluated.
作者
者瑞
侯志鑫
张中俭
曲永新
Zhe Rui;Hou Zhixin;Zhang Zhongjian;Qu Yongxin(School of Engineering and Technology,China University of Geosciences,Beijing 100083,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China)
出处
《山西建筑》
2020年第13期58-60,共3页
Shanxi Architecture
基金
国家自然科学基金项目(41602329)
中国地质大学(北京)大学生创新创业训练计划项目(201911415024)。
关键词
自由吸水率
劣化指数
风化程度
石质文物
评价方法
free water absorption
deterioration index
weathering degree
stone cultural relics
evaluation methodology
