Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cement soil uniaxial tensile tester and test method

A uniaxial stretching and cement-soil technology, applied to instruments, scientific instruments, and using stable tension/pressure to test the strength of materials, etc., can solve problems such as easy formation of eccentric loads, cumbersome operations, stress concentration damage, etc., and achieve test results Good repeatability, uniform tension distribution and wide applicability

Inactive Publication Date: 2021-06-15
SOUTHEAST UNIV
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the cumbersome operation in the prior art and the cross-section position of the sample is not easy to control; the sample is difficult to fix during the tensile test, and eccentric loads are easily formed; the test piece is easily damaged or broken at the restraint of the chuck; Sudden changes in the cross-section of the specimen are likely to cause large stress concentration damage at the variable cross-section, which reduces the reliability of the test results; the stress-controlled loading method cannot measure the complete tensile stress-strain curve of the cement-soil sample, and the loading process is easy. Affected by human factors, the accuracy of the test results cannot be guaranteed, etc., and the cement-soil uniaxial tensile tester and test method are provided

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
  • Cement soil uniaxial tensile tester and test method
  • Cement soil uniaxial tensile tester and test method
  • Cement soil uniaxial tensile tester and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The present invention is composed of four parts as a whole: test main body platform 1, power loading system 2, measurement system 3 and sample positioning and stretching system 4, and power loading system 2, measurement system 3 and sample positioning and stretching system 4 are all installed on Test on the main platform 1.

[0041] Such as figure 1 an...

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 cement soil uniaxial tensile tester and test method, and belongs to the field of cement soil sample test equipment. A dynamic loading system, a measuring system and a sample positioning and stretching system are arranged on a test main body platform of the tester; the sample positioning and stretching system is used for placing a detected cement soil sample; and the dynamic loading system drives the sample positioning and stretching system, and the measuring system is used for collecting tension and displacement change data of the sample positioning and stretching system. According to the cement soil uniaxial tensile tester, the loading mode is a strain control mode; and compared with a traditional uniaxial tensile test device, the tester can measure the complete cement soil tensile stress-strain relation curve, and analyzes the influence of the loading rate on the cement soil tensile property, so comparison is performed to select the loading rate with the minimum influence on the tensile strength test of the cement soil sample.

Description

technical field [0001] The invention relates to a cement-soil uniaxial tensile tester and a test method, belonging to the field of cement-soil sample test equipment. Background technique [0002] The tensile strength of cement-soil is generally not used in engineering construction, but under some specific working conditions, it is not uncommon for the cement-soil structure to crack and fail. For example, the cement-soil structure around tall buildings such as high-voltage transmission line towers often cracks due to insufficient tensile strength. Cement-soil mixing piles often have tensile stress in part of the structure due to eccentric compression. When the pile body is deformed due to large bending deformation, it will cause Problems such as cracking and damage. In recent years, many geological and geotechnical experts and scholars at home and abroad have paid attention to improving the tensile properties of cement-soil and how to accurately measure the tensile strength ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0012G01N2203/0017G01N2203/0252G01N2203/0676G01N2203/0682
Inventor 徐慧敏章定文
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products