Preparation method of rock test samples with different water ratios

A technology of rock test and water content, applied in the preparation of test samples, etc., can solve the problems of uniform and non-uniform water content inside and outside

Inactive Publication Date: 2012-03-28
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] But this kind of sample has big problems: one is inhomogeneity, because the sample is generally large, it is impossible to make the moisture content inside and outside uniform during the baking process; Rocks with low water content, and then accurately prepare several samples with similar water content

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  • Preparation method of rock test samples with different water ratios
  • Preparation method of rock test samples with different water ratios
  • Preparation method of rock test samples with different water ratios

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Embodiment Construction

[0030] Below in conjunction with embodiment describe in detail:

[0031] 1. Humidistat

[0032] Such as figure 1 , The hygrostat is a self-modified glass desiccator 1 that is commercially available, that is, some kind of supersaturated constant humidity solution 2 is added to the bottom of the desiccator to keep the humidity in the hygrostat constant. Based on different supersaturated constant humidity solutions 2, different humidity can be obtained; based on different humidity, the equilibrium water content in the sample can be changed to obtain samples with different water content.

[0033] According to the requirements of the experiment, choose a certain supersaturated constant humidity solution 2 to put in the hygrostat, some have very low humidity, some have high humidity, and some have medium humidity; many chemical manuals have clearly introduced it, and you can refer to relevant For example, see "Soviet Chemistry Handbook (Volume 1)", (translated by Tao Kun, Science ...

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Abstract

The invention discloses a preparation method of rock test samples with different water ratios and relates to the technical field of tests about rock mechanics. The preparation method comprises the following steps of: setting a test environment with a certain humidity in a hygrostat; weighing a sample to be prepared to obtain an original sample; marking the quality of the original sample as m1; feeding the original sample with the quality being m1 in a baking oven; drying the original sample at the temperature of 105-110DEG C and then weighing to obtain a dried sample; making the quality of the dried sample as m2 and feeding the dried sample with the quality being m2 in the hygrostat for preserving moisture; saturating the original sample with the quality being m1 with water and weighing to obtain a saturated sample; marking the quality of the saturated sample as m3; feeding the saturated sample with the quality being m3 into the hygrostat for preserving moisture; periodically weighing the sample in the hygrostat until the weight of the sample is constant to obtain a sample with constant weight; and marking the quality of the sample as m4. The solving method of the water ratio is shown in the description. The water content of the sample prepared in the invention is quite uniform and reaches a thermodynamic equilibrium state; and samples with little difference in the water ratio can be prepared.

Description

technical field [0001] The invention relates to the technical field of rock and soil mechanics tests, in particular to a method for preparing rock test samples with different water contents. Background technique [0002] The rock is massive, and it is impossible to directly add water to a certain amount of soil powder to control its moisture content like preparing soil samples with different moisture contents. To obtain rock test samples (abbreviated as samples) with different water contents, it is usually saturated with water first, and then forced to partially lose water by baking to achieve different water contents. [0003] But this kind of sample has big problems: one is inhomogeneity, because the sample is generally large, it is impossible to make the moisture content inside and outside uniform during the baking process; For rocks with low water content, several samples with similar water content are accurately prepared. [0004] However, in the study of rock and soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 周辉李震张传庆卢景景冯夏庭程昌炳
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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