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Silty mudstone similar material and preparation method thereof

A similar material, mudstone technology, applied in the field of silty mudstone similar materials and its preparation, can solve the problems of low similarity of rock materials, uncontrollable compaction, poor colloidal brittleness, etc., to save sample preparation costs and avoid The effects of artificial on-site sampling and sampling speed, increasing compactness

Active Publication Date: 2021-04-09
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The rock-like materials developed in the past mainly use the chemical reaction of cement to form cohesive colloids to control the characteristics of similar materials, but the colloids have disadvantages such as poor brittleness and uncontrollable compaction.
Therefore, the existing similar materials usually only have a single or a few features similar to the original rock, and there are problems such as low similarity with rock materials.
In addition, few previous studies have involved the preparation of similar materials specifically for silty mudstone.
In short, the existing methods for preparing similar materials cannot be similar to the original silty mudstone in terms of important physical parameters, similar mechanical properties, simple process, easy forming, convenient raw material acquisition, and economical benefits.

Method used

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  • Silty mudstone similar material and preparation method thereof
  • Silty mudstone similar material and preparation method thereof
  • Silty mudstone similar material and preparation method thereof

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preparation example Construction

[0046] A kind of preparation method of silty mudstone similar material, concretely carries out according to the following steps:

[0047] S1, according to the following parts by mass, weigh 20-80 parts of gypsum, 20-80 parts of organically modified montmorillonite powder, 0.3-3.6 parts of nano-alumina, and 10-21 parts of saturated alcohol rosin solution; preparation of saturated alcohol rosin solution Method: Put the weighed rosin powder into the container, pour alcohol slowly, stir clockwise with a glass rod at a constant speed, filter out the remaining rosin at the bottom, and obtain a saturated alcohol rosin solution.

[0048] S2, pour the weighed gypsum, organically modified montmorillonite powder, and nano-alumina into the mixer at the same time, mix well and evenly, and form a solid mixture; stir at a speed of 30-50rad / s, stir for 5-10min, and quickly form a uniform mixture material, save sample preparation time, avoid material inhomogeneity in stirring, and cause defect...

Embodiment 1

[0053] A kind of preparation method of silty mudstone similar material, concretely carries out according to the following steps:

[0054] S1, weigh 20 parts of gypsum, 80 parts of organically modified montmorillonite powder, 0.3 parts of nano-alumina, and 21 parts of saturated alcohol rosin solution according to the following parts by mass;

[0055] S2, pour the weighed gypsum, organically modified montmorillonite powder, and nano-alumina into the mixer at the same time, fully mix evenly, form a uniform solid mixture, stir at a stirring speed of 50rad / s, and stir for 5min;

[0056] S3, pour the saturated alcohol rosin solution into the uniform solid mixture and stir quickly evenly, the stirring speed is 80rad / s, stir for 5min, and quickly form a uniform mixture;

[0057] S4, taking out the homogeneous mixture, putting it into a mold to control the degree of compaction in layers, and the degree of compaction of each layer is 0.75; it is used to control the density of similar ma...

Embodiment 2

[0060] A kind of preparation method of silty mudstone similar material, concretely carries out according to the following steps:

[0061] S1, according to the following parts by mass, weigh 80 parts of gypsum, 20 parts of organically modified montmorillonite powder, 3.6 parts of nano-alumina, and 10 parts of saturated alcohol rosin solution;

[0062] S2, pour the weighed gypsum, organically modified montmorillonite powder, and nano-alumina into the mixer at the same time, fully mix evenly, form a uniform solid mixture, stir at a speed of 30rad / s, and stir for 10min;

[0063] S3, pour the saturated alcohol rosin solution into the uniform solid mixture and stir quickly evenly, the stirring speed is 100rad / s, stir for 2min, and quickly form a uniform mixture;

[0064] S4, taking out the homogeneous mixture, putting it into a mold to control the degree of compaction in layers, and the degree of compaction of each layer is 0.85;

[0065] S5, put the filled sample mold in a constan...

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Abstract

The invention discloses a silty mudstone similar material and a preparation method thereof. The silty mudstone similar material is composed of the following parts by mass: 20-80 parts of gypsum, 20-80 parts of organically modified montmorillonite powder, and nano-alumina 0.3-3.6 parts, 10-21 parts of saturated alcohol rosin solution. The silty mudstone similar material of the invention has high similarity with silty mudstone, wide adjustment range of mechanical parameters, good plasticity and uniformity, wide source of raw materials, low price and simple preparation method.

Description

technical field [0001] The invention belongs to the technical field of geomechanics model tests, and relates to a silty mudstone similar material and a preparation method thereof. Background technique [0002] Silty mudstone is a kind of soft rock widely distributed in southern my country, which has the characteristics of shrinking and swelling when it dries up, and is easy to weather. In southern my country, the climate is mainly subtropical monsoon climate, with significant diurnal and seasonal changes in temperature. In spring and summer, there are characteristics of rain and heat at the same time, with high temperature and high humidity. When carrying out slope excavation, underground mining, underground chamber excavation and other projects in this area, the silty mudstone under the excavation surface is easily affected by the ambient temperature and humidity, resulting in attenuation of its strength and large deformation, causing rock The instability and damage of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/22C04B111/54
CPCC04B26/22C04B2111/542C04B14/104C04B14/303C04B24/34C04B14/365
Inventor 付宏渊戚双星史振宁曾铃
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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