A method for manufacturing a circular test mold for testing mortar and concrete shrinkage cracking

A technology of shrinkage cracking and manufacturing methods, which is applied in the field of building materials engineering, can solve the problems of unreasonable design of the ring test mold, long test time of the ring method, and limitation of the application of the ring method, etc., so as to achieve a short time for removing the test piece , good design concept, quick disassembly effect

Active Publication Date: 2017-05-17
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of the ring test mold is unreasonable, too bulky, and inconvenient to carry. There is an urgent need for a reasonable design of the ring test mold.
In addition, the test time of the ring method is long and the sensitivity is poor. It usually takes a long time for the specimen to appear initial cracks, and sometimes it does not appear due to poor sensitivity.
Moreover, the ring method, as a passive constraint, is mostly used in qualitative research, which limits the application of the ring method

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
  • A method for manufacturing a circular test mold for testing mortar and concrete shrinkage cracking
  • A method for manufacturing a circular test mold for testing mortar and concrete shrinkage cracking
  • A method for manufacturing a circular test mold for testing mortar and concrete shrinkage cracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 1-8 shown.

[0026] (1) Making the hollow ring base 1: The hollow ring base 1 is composed of five parts: a hollow base plate, an inner ring 8, a fixing column 5, a fixing groove 6 and a handle 7, all of which are made of Q235 steel; wherein, the hollow base plate is square, Thickness 6mm, length 430mm, cut off a circle with a diameter of 290mm at the geometric center of the square hollow ring base 1, deburr and chamfer after cutting; inner ring 8 inner diameter 302mm, thickness 8mm, height 155mm, inner ring 8 and hollow ring base 1 The geometric centers coincide and are fixed on the hollow floor by welding; the fixed column 5 has a diameter of 18mm and a height of 165mm, and the fixed column 5 is located at a distance of 224mm from the center on the diagonal of the square floor, and is fixed on the hollow floor by welding; the fixed groove 6. The notch has a diameter of 20 mm and a depth of 4 mm, and is symmetrically distributed with the fixed column 5....

Embodiment 2

[0031] (1) Making the hollow ring base 1: The hollow ring base 1 is composed of five parts: a hollow base plate, an inner ring 8, a fixing column 5, a fixing groove 6 and a handle 7, all of which are made of Q235 steel; wherein, the hollow base plate is square, Thickness 6mm, length 432mm, cut off a circle with a diameter of 292mm at the geometric center of the square hollow ring base 1, deburr and chamfer after cutting; inner ring 8 inner diameter 302mm, thickness 10mm, height 165mm, inner ring 8 and hollow ring base 1 The geometric centers coincide and are fixed on the hollow floor by welding; the fixed column 5 has a diameter of 18mm and a height of 167mm, and the fixed column 5 is located at a distance of 224mm from the center on the diagonal of the square floor, and is fixed on the hollow floor by welding; the fixed groove 6 The notch has a diameter of 20 mm and a depth of 5 mm, and is symmetrically distributed with the fixed column 5. It is located at 224 mm in the opposi...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a manufacturing method of a ring test mold for testing the shrinkage and cracking of mortar and concrete. The method comprises the following steps: (1) producing a hollow annular base, wherein the hollow annular base consists of five parts, i.e., a square hollow soleplate, an inner ring, a soleplate fixing column, a soleplate fixing groove and a base lifting hand; (2) producing a paired lifting lug outer ring, wherein the outer ring is formed by two movable half rings identical in size in a pairing manner, and a pair of lifting lugs is respectively welded on one side of an axial edge of the half ring; (3) producing a movable cylindrical bolt; (4) installing the two paired lifting lug outer rings into the hollow base, fixing one end of the outer ring by virtue of the fixing column, and fixing the other end of the outer ring by penetrating the movable cylindrical bolt obtained in the step (3) into the two lifting lugs to enter the fixing groove. The inner ring and the outer ring are paired to form an annular space which is filled with pouring mortar or concrete. The device is matched with a strain recorder, so that the strain caused by the shrinkage of a mortar and concrete sample can be automatically recorded and monitored for a long time, the cracking time can be accurately determined, and the volume deformation of cement concrete material at each period can be qualitatively and quantitatively researched.

Description

technical field [0001] The invention belongs to the technical field of building material engineering, and in particular relates to a manufacturing method of a circular test mold for testing mortar and concrete shrinkage cracking. Background technique [0002] Cracking of building materials (such as mortar and concrete) is an important and difficult point in the safety control of construction engineering structures, and has been widely concerned by various links in the construction industry such as structural design, construction, and materials. From a structural point of view, early (before 7d) cracking is the result of the restriction of early shrinkage development; from a material point of view, the self-drying effect produced by using a large number of ultra-fine rubber materials and adopting a low water-cement ratio design can also easily lead to Self-shrinkage cracking; From the construction point of view, the concrete is exposed to the dry environment prematurely due t...

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 Patents(China)
IPC IPC(8): G01N1/28
Inventor 刘荣进陈俊陈平李三破赵艳荣韦家崭丁欢
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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