Sandstone similar material based on freeze-thaw cycle model tests and preparation method thereof

A similar material, freeze-thaw cycle technology, applied in the preparation of test samples, ceramic products, other household appliances, etc., can solve the problems of similar mechanical properties, shrinkage and expansion differences, etc., to achieve stable properties, strong cementing ability, and reliability High adjustment effect

Inactive Publication Date: 2019-10-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of sandstone similar material based on freeze-thaw cycle model test and preparation method thereof, to solve the present sandstone similar material model test proposed in the above-mentioned background technology is mostly developed for other similar properties of rock, for rock There are not many similar materials with similar frost resistance, and only the mechanical properties similar to those before freezing and thawing are considered. The physical and mechanical properties after freezin...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sandstone similar material based on freeze-thaw cycle model tests and preparation method thereof
  • Sandstone similar material based on freeze-thaw cycle model tests and preparation method thereof
  • Sandstone similar material based on freeze-thaw cycle model tests and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A sandstone-like material based on a freeze-thaw cycle model test and a preparation method thereof, comprising: by weight, 186-280 parts of aggregate, 213-225 parts of cement, and 86-89 parts of water;

[0024] Preferably, the aggregate includes 158-278 parts of standard river sand, 0-35 parts of 40-80 mesh pottery sand, 0-42 parts of 32-40 mesh pottery sand, and 0-28 parts of 20-32 mesh pottery sand.

[0025] Preferably, the cement used in the aggregate is prepared by mixing 21-68 parts of gypsum and 149-203 parts of cement.

[0026] Preferably, a method for preparing sandstone-like materials based on a freeze-thaw cycle model test, comprising:

[0027] (1): Take cement, gypsum, river sand, and distilled water according to the above ratio and put them into a container and stir evenly;

[0028] (2): Pour the mixture obtained in S1 into a grinding tool for compaction, wherein: each group of experiments has 6 test pieces, and 3 of them are used for the uniaxial compressi...

example 1

[0033] The sandstone-like model material raw materials of this example include: by weight, 278 parts of aggregate, 226 parts of cement, and 86 parts of water, wherein the cement includes 23 parts of gypsum and 203 parts of cement.

[0034] The preparation method of the sandstone similar model of this implementation case includes:

[0035] (1): Take cement, gypsum, river sand, and distilled water according to the above ratio and put them into a container and stir evenly;

[0036] (2): Pour the mixture obtained in S1 into a grinding tool and compact it, (6 test pieces for each group of experiments, 3 for the uniaxial compressive strength measurement (average value) before freezing and thawing, and 3 for freezing and thawing. Uniaxial compressive strength measurement after melting), remove the mold after curing for 24 hours, and cure in water for 14 days, you can get the similar material of sandstone;

[0037] (3): Measure the uniaxial compressive strength of sandstone similar m...

example 2

[0040] The raw materials of the sandstone similar model material of this example include: by weight, 232 parts of aggregate, 225 parts of cement, 86 parts of water, wherein cement comprises 45 parts of gypsum, 180 parts of cement; aggregate comprises 209 parts of river sand, 32- 23 parts of 40 mesh pottery sand.

[0041] After saturating the pottery sand with water, repeat the preparation steps in Example 1 to obtain the compressive strength of sandstone similar materials;

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a sandstone similar material based on freeze-thaw cycle model tests and a preparation method thereof. The sandstone similar material comprises, by weight, 186-280 parts of anaggregate, 213-225 parts of a bonding agent and 86-89 parts of water; the aggregate comprises, by weight, 158-278 parts of standard river sand, 0-35 parts of 40-80 mesh pottery sand, 0-42 parts of 32-40 mesh pottery sand, and 0-28 parts of 20-32 mesh pottery sand; the bonding agent adopted in the aggregate is prepared by mixing 21-68 parts of plaster and 149-203 parts of cement. The preparation method of the sandstone similar material includes the step that according to the proportion, the cement, the plaster, the river sand and the distilled water are weighed and then placed into a containerto be evenly stirred. By adopting the sandstone similar material, freezing resistance of sandstone can be well simulated; according to the sandstone similar material, a mixture of the plaster and thecement serves as the bonding agent; the mixture of the plaster and the cement has the advantages of having high bonding capability, stable properties, a high adjustable degree and the like, after themixture of the plaster and the cement serves as the bonding agent to be mixed with the aggregate, the similar material which is compact, uniform and stable in physical and mechanical property is obtained, and thus properties of the similar material coincide with those of sandstone.

Description

technical field [0001] The invention relates to the technical field of model-like materials, in particular to a sandstone-like material based on a freeze-thaw cycle model test and a preparation method thereof. Background technique [0002] Traditional geotechnical engineering The area of ​​cold regions in my country ranks third in the world. About 75% of the country’s land area is frozen in winter and thawed in summer, and the cycle of freezing at night and thawing at the turn of spring and summer. The development of resources in cold regions, the process of engineering construction and the service During the period, the problem of freeze-thaw disasters in rock mass engineering was not uncommon. A large number of engineering examples in cold regions showed that although the freeze-thaw cycle affected the depth of slope rock mass to a limited extent, it would induce local landslides and collapses, and cause a wider range of slope damage due to chain reactions. In addition, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B28/14C04B38/08G01N1/28
CPCC04B28/14C04B38/08C04B2201/50G01N1/28C04B38/0074C04B7/00C04B22/002C04B14/068C04B18/027
Inventor 胡萌杨小敏周盛涛罗学东
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap