A Rapid Method for Preparing Samples with Different Water Saturation

Abstract

The invention discloses a method for quickly preparing samples with different water saturations, which belongs to the technical field of rock samples and concrete samples, and comprises the following steps: 1) cutting the samples; 2) putting the cut samples into an oven to obtain a Dry samples; 3) Prepare water saturation samples under negative pressure and constant humidity environment; 4) Prepare samples with different water saturations in sequence according to the test plan. A method for quickly preparing samples with different water saturations in the present invention reduces the air in the pores of the sample under negative pressure, accelerates the penetration of water vapor in the sample, and shortens the preparation time; Control the humidity of the hygrostat to accurately prepare samples with different water saturations. The invention has the advantages of simple operation and high efficiency, and can quickly prepare high-precision samples meeting the research requirements and having uniform moisture distribution.

Description

technical field [0001] The invention belongs to the technical field of rock samples and concrete samples, in particular to a method for quickly preparing samples with different water saturations. Background technique [0002] The influence of water on the mechanical properties of engineering materials such as rocks and concrete is very significant. Therefore, in the research of mechanics, architecture, geology and other fields, the influence of water on samples is often considered. Therefore, how to quickly and accurately prepare water-containing materials with uniform distribution Samples with different water saturations have become a problem that researchers must consider, but so far there is no relatively complete method to prepare samples with different water saturations, and the common problems are long time, low precision, and uneven water distribution And so on. Therefore, there is an urgent need for a relatively complete method to prepare samples with different wate...

AI Technical Summary

Problems solved by technology

Although this method speeds up the preparation time, the sample can be saturated with water in about 6 hours, and the corresponding relationship between the soaking time and the water saturation of the sample is relatively clear, but the disadvantage of this method is that the distribution of water in the sample is not uniform, Affect the mechanical properties of the sample;

[0006] 3. Conventional chemical-thermodynamic method: Zhou Hui et al. have published a patent "a method for preparing rock test samples with different water content", publication number CN102393320A, which studies the conventional chemical-thermodynamic method for preparing rocks with different water content. Although the method can prepare rock samples with uniform water content distribution, the preparation time is long, usually about 3 months. If the time is too long, the accuracy of rock sample preparation will be affected, and it cannot meet the needs of scientific researchers for preparing samples with different water saturations during experiments.

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