Concrete Cracking Monitoring Method Based on Pull Sensitive Effect of Conductive Polymer
A conductive polymer, concrete cracking technology, applied in the direction of material resistance, can solve the problem of unreinforced geotechnical materials, and achieve the effect of reducing the risk of concrete cracking, prolonging life, and ensuring safety
Active Publication Date: 2015-08-12
SHANDONG UNIV
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, there is no self-testing reinforced geotechnical material
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] Example 1: Cracking Safety Pre-warning Monitoring of Concrete Beams
[0028] When using light concrete for beam construction, the dry bulk density of light concrete is less than 1950kg / m 3 , The intensity level ranges from CL15 to CL50. The conductive polymer 2 filled with carbon fiber is made into a shape that matches the concrete beam 4, and embedded in the concrete parallel to the steel bar 3, such as image 3 shown. In order to prevent the surface of the conductive polymer 2 from being affected by other factors other than external force, resulting in significant changes in resistivity, resulting in inaccurate monitoring results, a protective coating was applied to the surface of the conductive polymer 2. According to the length of the concrete beam 4, the wire 1 that is in good contact with the conductive polymer 2 is drawn out in proportion. In order to prevent the wire 1 from being damaged, it is covered with an insulating and anti-corrosion coating. Connect th...
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
Login to View More Abstract
The invention discloses a concrete cracking monitoring method based on a tensile sensitive effect of a conductive polymer. The concrete cracking monitoring method comprises the specific steps of: step 1, coating a protective coating on the surface of the conductive polymer; step 2, measuring a relation between a tension strain value of the conductive polymer and an electrical resistivity of the polymer, wherein the measured tension strain value of the conductive polymer is an allowable tension strain value of the conductive polymer; step 3, pouring the conductive polymer and concrete into a needed shape and leading out a lead wire from the conductive polymer; step 4, connecting the led-out lead wire with a resistance measurement device and collecting an actual resistance value of the conductive polymer in real time; and step 5, determining an actual tension strain value of the conductive polymer and comparing the actual tension strain value with the allowable tension strain value of the conductive polymer, wherein if the actual tension strain of the conductive polymer is higher than the allowable tension strain of the conductive polymer, the concrete has the danger of cracking. With the adoption of the concrete cracking monitoring method disclosed by the invention, the effect of ribbing and reinforcing is realized and the risk of cracking the concrete can be effectively reduced.
Description
technical field [0001] The invention relates to a concrete cracking monitoring method based on the pulling sensitivity effect of conductive polymer, which belongs to the field of civil engineering. Background technique [0002] As an important material in engineering construction, concrete can be used in almost all construction projects, but the concrete itself has the risk of cracking due to various reasons. Once the concrete as a structure cracks, its bearing capacity will drop rapidly, and then cause fracture , causing damage to buildings, causing huge social and economic losses and even life-threatening. However, the cracking of concrete is a long-term process. Practice shows that only when the internal damage state of concrete develops to a certain extent, the cracking will appear on the surface, which often delays the best time for repair and early warning. Therefore, it is of great significance to monitor the cracking of concrete. In recent years, geotechnical mater...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/20
Inventor 崔新壮李术才隋伟杨为民张炯高智珺张娜
Owner SHANDONG UNIV