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

A device and method for monitoring early freezing of concrete

A monitoring device and concrete technology, which is applied in the direction of measuring devices, instruments, investigation stages/state changes, etc., can solve problems such as the inability to monitor concrete resistance, and achieve the effects of easy operation of measurement methods, accurate and reliable measurement methods, and reasonable design

Active Publication Date: 2021-01-01
HARBIN INST OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current resistivity method is generally divided into two-electrode method, four-electrode method, and electrodeless method. These methods can only test the surface resistance of concrete or the resistance of a specific position inside the concrete, and cannot monitor the resistance of a series of positions in the concrete. In winter, the temperature drop on the concrete surface is usually much faster than the internal temperature drop, so the degree of freezing on the surface and inside of the concrete is not the same. Currently, in various devices for measuring concrete, the electrode shapes are generally divided into sheet electrodes and columnar electrodes. , mesh electrode

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 device and method for monitoring early freezing of concrete
  • A device and method for monitoring early freezing of concrete
  • A device and method for monitoring early freezing of concrete

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0037] Specific implementation mode one: as Figure 1-Figure 6 Shown, a kind of concrete is subjected to freezing ice monitoring device in early stage, and its composition comprises temperature tester 12, resistance tester 13 and two test devices, and described two test devices are test device one 10 and test device two 11 respectively; Described test device one 10 and test device two 11 all comprise ' back ' font hollow support 1 and four hard plastic plates 2; Described test device one 10 also comprises many thermocouples 4 and many pairs of electrode nets 3, described The test device 2 11 also includes a pair of electrode grids 3;

[0038]The specific structure of the test device-10 is as follows: the four sides of the 'back'-shaped hollow support 1 are horizontally provided with multiple openings, and the multiple openings set on each side of the 'back'-shaped hollow support 1 are all along the The depth direction is set, and the multiple openings on the opposite sides ar...

specific Embodiment approach 2

[0044] Specific implementation mode two: as figure 2 , Figure 4 and Figure 6 As shown, this embodiment is a further description of specific embodiment one. The 'back'-shaped hollow bracket 1 in the first test device 10 and the second test device 11 is set opposite to each other by the two L-shaped brackets 7 ( Consists of detachable connections via bolts b).

specific Embodiment approach 3

[0045] Specific implementation mode three: as figure 2 , Figure 5 and Figure 6 As shown, this embodiment is a further description of specific embodiment 1. One end of all the electrode grids 3 in the first test device 10 and the second test device 11 are folded into a right-angle edge, and the electrode grid 3 is inserted into the opening. And it is fixed on the inner side of the 'back'-shaped hollow support 1 by a right-angle edge.

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a concrete early frost freezing monitoring device and method, and belongs to the technical field of concrete detection. According to the structure of a first testing device, a pair of electrode nets are fixedly inserted into each pair of openings of a hollow support shaped like a Chinese character 'hui', all pairs of electrode nets are connected with a wire, the other end ofthe wire is connected with a resistance tester, the resistance tester is connected with a computer, multiple thermocouples are fixed to the outer side face of the hollow support shaped like the Chinese character 'hui', the test point heights of the multiple thermocouples correspond to the multiple pairs of electrode nets, the other ends of the multiple thermocouples are connected with a temperature tester, and the temperature tester is connected with the input end of the computer; according to the structure of a second testing device, a pair of electrode nets are fixedly inserted into a pairof openings of the hollow support shaped like the Chinese character 'hui' and connected with the wire, and the other end of the wire is connected with the resistance tester; and horizontally-arrangedhard plastic plates are fixed to the tops of the four side faces of the hollow support shaped like the Chinese character 'hui' in the first testing device and the second testing device respectively. The concrete early frost freezing monitoring device and method is used for concrete early frost freezing monitoring.

Description

technical field [0001] The invention belongs to the technical field of concrete detection, and in particular relates to a monitoring device and method for early freezing of concrete. Background technique [0002] The winter is long and the temperature is low in most areas of the northeast, northwest and central parts of China. Concrete is the most widely used building material in civil engineering. The huge demand makes concrete engineering in these areas unavoidable for winter construction. When the concrete is frozen in winter, the hydration of the concrete proceeds very slowly, and the moisture inside the concrete will freeze, and the formation of ice will cause 9% volume expansion, thereby destroying the internal pore structure of the concrete, forming large voids, and reducing the strength. At the same time, when the concrete is frozen, the internal moisture will be redistributed, and the migration of moisture inside the concrete will cause irreversible damage to the c...

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): G01N25/04G01N27/04
CPCG01N25/04G01N27/041
Inventor 杨英姿桑源江守恒于清林高金麟吕承博邱从国
Owner HARBIN INST OF TECH
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com