Nondestructive testing method for testing reinforcing effect of earthen site
A kind of earthen ruins, non-damage technology, applied in the direction of soil material testing, material inspection products, measuring devices, etc., can solve the quality evaluation method, the effect judgment has not yet formed a quantitative analysis method, limit the application and promotion of weathering reinforcement materials, and affect the specification Sexual construction technology and other issues
Active Publication Date: 2010-06-16
DUNHUANG ACAD
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Problems solved by technology
However, the quality assessment method and effect judgment after the implementation of protection measures on earthen sites have not yet formed a quantitative analysis method
In this way, the formation of normative construction technology has been affected to a large extent, and the application and promotion of existing weatherproof reinforcement materials have been limited.
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[0031] The area of the reinforced soil site is about 10m 2 , the wall thickness is 0.8-1.0m, the steps are:
[0032] 1. Take disturbed soil (generally collapsed objects) at the site of the earthen site, and use the compaction method in the laboratory to make 10 samples of different densities, with a height of 5cm and a diameter of 2.5cm;
[0033] 2. The heat pulse method is used to measure the thermal conductivity λ and specific heat c of the soil indoors; the device of the heat pulse method consists of a heater, three samples placed on both sides of the heater and thermocouples. When the heater is supplied with current, the thermal conductivity and specific heat of the sample can be obtained according to the temperature change of the tested sample. The thermal conductivity and specific heat tests shall be carried out according to the following steps:
[0034] (a) weigh the mass of the sample, measure the size of the sample, and calculate the density of the sample;
[003...
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The invention relates to a nondestructive testing method for testing the reinforcing effect of an earthen site, which adopts a thermal infrared imager and a mobile illumination lamp which is used for artificially warming the surface of the earthen site. The method comprises the following steps of: analyzing the changing process of the temperature along with the time to calculate thermal inertia; inversely calculating the elastic modulus of the earth according to a relationship between the pre-tested thermal inertia of the earth and the elastic modulus of the earth; and comparing the elastic modulus of the reinforced earth with that of the un-reinforced earth to evaluate the reinforcing effect. The method can implement quality assessment and effect judgment after a protective measure so asto perform a nondestructive test and quantitative analysis on the earthen site. The method has an important directive function on the application, the popularization and the normative construction technology of the conventional anti-weathering reinforcing materials.
Description
technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a non-destructive testing method for testing the reinforcement effect of earthen ruins. Background technique [0002] In Xinjiang, Gansu, Ningxia and Shaanxi in Northwest my country, there are many ancient earthen building sites, such as Banpo Village in the outskirts of Xi'an, Shaanxi, Dadiwan human settlements in Qin'an County, Gansu, Jiaohe Ancient City in Turpan, Xinjiang, and Anxi County, Gansu. The ancient city of Suoyang City; the mausoleum of the Xixia kings and other soil sites. These earthen building sites have a long history and are of high archaeological and historical value, fully demonstrating the civilization of the ancient Chinese culture. The types of earth ruins are generally divided into rammed silty clay or silty sand, or directly excavated with raw soil, or built with adobe, or built with wooden formwork. When the climate is dry, the earthen ...
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Login to View More IPC IPC(8): G01N33/24G01N25/20G01N15/08G01N3/00
Inventor 王旭东张得煊郭青林
Owner DUNHUANG ACAD