Method for quickly evaluating weathering degree of stone cultural relics

A technology of weathering degree and stone cultural relics, applied in the direction of using material absorption weighing, measuring devices, instruments, etc., to achieve the effect of protecting integrity and obtaining easy

Inactive Publication Date: 2020-03-27
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for quickly evaluating the degree of weathering of stone cultural relics to solve the existing rapid, true,

Method used

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  • Method for quickly evaluating weathering degree of stone cultural relics
  • Method for quickly evaluating weathering degree of stone cultural relics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 The test sample comes from the sandstone of the Yungang Grottoes in Datong, Shanxi. The Yungang Grottoes were built in the Northern Wei Dynasty. There are 252 caves and more than 51,000 statues in the Yungang Grottoes. character, cultural relic value, etc. The Yungang Grottoes are mainly composed of sandstone lenses formed by river deposits during the Jurassic period. The weathered samples were taken from the spalled samples of No. 3 and 4 caves, and the fresh samples were taken from different depths of fresh cores in the same layer (the depth of the inclined drilling is about 15-25m).

[0025] In step 100, the number of fresh rock samples for testing is 9, numbered YZ-1 to YZ-9, and the number of weathered rock samples is 15, numbered YF-1 to YF-15.

[0026] Step 200, dry the test block at 105°C for 24 hours to constant weight, and record the weight as m d . Then, soak the test piece in the water tank, take it out after 12 hours, and quickly wipe it with ...

Embodiment 2

[0038] Example 2 The test rock samples come from sandstone and tuff in Chengde Mountain Resort. The pedestal and Xumizuo of the main hall in Chengde Mountain Resort are all made of sandstone and tuff. The sandstone weathered rock samples are taken from the exfoliation of the sandy cultural relics in the Summer Resort, and the fresh sandstone rock samples are taken from the large sandstone pillar foundation of Puren Temple. The sandstone inside the pillar foundation has not been weathered, so it is a fresh rock sample. The tuff weathered rock samples were taken from the exfoliation of the tuff cultural relics in the Summer Resort, and the fresh rock samples were taken from the Yingwugou quarry in Chengde. It should be noted that the stone material of the tuff stone cultural relics in Chengde Mountain Resort is taken from Yingwugou.

[0039] In step 100, the number of fresh sandstone samples for testing is 6, numbered SZ-1 to SZ-6, and the number of weathered rock samples is 8,...

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Abstract

The invention discloses a method for quickly evaluating the weathering degree of stone cultural relics. The method comprises the following steps: drying and weighing a weathered rock sample and a fresh rock sample in a drying oven; soaking the rock sample in water and weighing, and calculating the free water absorption rate of the rock sample; defining the ratio of the free water absorption of theweathered rock sample to the average value of the free water absorption of the fresh rock sample as the degradation index of the weathered rock sample; and determining the weathering degree grade ofthe weathered rock sample according to the degradation index range. The method is convenient to operate, and a quick, accurate and quantitative evaluation method for the weathering degree of the stonecultural relics is provided.

Description

technical field [0001] The invention relates to the technical field of weathering of stone cultural relics, in particular to a method for quickly evaluating the degree of weathering of stone cultural relics. Background technique [0002] The degree of weathering of rock samples and its evaluation have important research significance for the protection of stone cultural relics. At present, there are many methods for evaluating the weathering degree of rock samples at home and abroad, which are usually divided into two types: qualitative evaluation and quantitative evaluation, and qualitative evaluation is the main method. [0003] The first type of method is to qualitatively evaluate the weathering degree of rock samples. This type of method generally divides the rock sample weathering degree into different weathering grades qualitatively according to the color of the rock sample, the integrity of the rock sample, mineral composition, chemical composition, hydraulic properti...

Claims

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Application Information

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IPC IPC(8): G01N5/02
CPCG01N5/025
Inventor 张中俭者瑞侯志鑫
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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