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

Concrete in-situ non-destructive gas permeability measurement device as well as method

A gas permeability, concrete technology, used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve problems such as inapplicability

Active Publication Date: 2013-09-25
RES INST OF HIGHWAY MINIST OF TRANSPORT
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an in-situ non-destructive gas permeability measurement device and method for concrete to solve the problem that the above measurement method is not suitable for the internal permeability measurement of concrete components

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
  • Concrete in-situ non-destructive gas permeability measurement device as well as method
  • Concrete in-situ non-destructive gas permeability measurement device as well as method
  • Concrete in-situ non-destructive gas permeability measurement device as well as method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] see figure 1 , figure 1 It is a structural diagram of an embodiment, including the following components:

[0024] 1—Concrete component, 2—Gas collecting hood, 3—Aeration valve, 4—Gas pressure transmitter, 5—Desiccant, 6—Filter, 7, 8, 11 and 12—Valve, 9 and 10—Different ranges Gas mass flow controller, 13—vacuum pump, 14—parallel data line of gas mass flow controller, 15—data line of gas mass flow controller, 16—data line of gas pressure transmitter, 17—data acquisition controller, 18— sealant application area;

[0025] An in-situ non-destructive gas permeability measurement device for concrete in an embodiment, comprising:

[0026] The air collecting hood 2 is used for bonding on the concrete surface to be tested to form a closed space;

[0027] The gas pressure transmitter 4 is installed on the outer surface of the gas c...

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 provides a concrete in-situ non-destructive gas permeability measurement method. The device comprises a gas collecting hood, a gas pressure transmitter, a gas quality and flow rate controller, a vacuum pump, a plurality of valves and a controller, wherein the gas collecting hood is used for being bonded on the surface of to-be-tested concrete so as to form a sealed space; the gas pressure transmitter is installed on the outer surface of the gas collecting hood, and is used for collecting the pressure in the gas collecting hood when the gas collecting hood is at the negative pressure state; the gas quality and flow rate controller is installed on a pipeline between the gas collecting hood and the vacuum pump, and is used for detecting and controlling the current gas flow rate; the vacuum pump is used for extracting gases in the gas collecting hood, passing through the gas quality and flow rate controller; the plurality of valves are installed on the pipeline, and are used for controlling the gas on the pipeline to pass through; the controller is connected with the gas pressure transmitter and the gas quality and flow rate controller, and determines the gas permeability of concrete through parameters sensed by the gas pressure transmitter and the gas quality and flow rate controller. According to the device and the method, the permeability can be measured under the negative pressure state; the surface of concrete is not damaged; the measurement process is simple.

Description

technical field [0001] The invention relates to concrete testing, in particular to a device and method for measuring in-situ non-destructive gas permeability of concrete. Background technique [0002] The permeability of concrete-like materials (rock, concrete, brick, etc.) is one of the key factors affecting their durability. At present, the permeability measurement methods are distinguished according to the selected permeation medium, which can be divided into two types: liquid and gas, and the corresponding test methods are hydraulic pressure test and air pressure test method. [0003] According to the measurement method, it can be divided into two types: sampling and non-sampling. ① At present, the premise of sampling is to test the permeability of concrete specimens in the laboratory. This kind of experimental method is generally a destructive experiment. For intact concrete specimens, the sampling method destroys the integrity of the concrete components; for damaged ...

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): G01N15/08
Inventor 李萍王新征牛冠毅赵建伟毛燕杨伟
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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