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A detection method for the degree of influence of recycled aggregate on the transition zone of concrete interface

A technology of interface transition zone and recycled aggregate, applied in the direction of material impedance, etc., can solve the problems such as the detection method of recycled aggregate that has not yet been seen, and achieve the effect of simple experimental process.

Active Publication Date: 2020-04-03
北京时代思动科技有限公司
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Problems solved by technology

Through consulting a large number of documents, there is no simple and practical detection method for the degree of influence of recycled aggregates on the concrete interface transition zone. In this context, the present invention discloses a detection method for the degree of influence of recycled aggregates on the concrete interface transition zone

Method used

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  • A detection method for the degree of influence of recycled aggregate on the transition zone of concrete interface
  • A detection method for the degree of influence of recycled aggregate on the transition zone of concrete interface
  • A detection method for the degree of influence of recycled aggregate on the transition zone of concrete interface

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with accompanying drawing.

[0035] like figure 1 as shown, figure 1 It is a schematic diagram of the forming test block, including the recycled aggregate or acrylic cube block 1 in the center and the conductive mortar concrete 2 wrapped outside the recycled aggregate or acrylic cube block 1, which together form the forming test block. The forming method of the forming test block is to process the recycled aggregate or acrylic into a cube with a side length of 2-3cm, and vacuumize to maintain the vacuum to absorb the conductive ink. After the recycled aggregate or acrylic is processed, the conductive mortar is produced. The production method is as follows: keep the water-cement ratio 0.4-0.5, and stir it into a cement slurry; put the sand into the conductive ink solution, so that the sand surface is evenly covered with a layer Conductive substance; put sand into the above cement slurry, stir to form ...

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Abstract

The invention relates to a method for detecting the degree of influence of recycled aggregate on the concrete interface transition zone, which is obtained by making a finished test block of recycled aggregate and a finished product test block of acrylic aggregate with conductive properties; and performing an AC impedance spectrum test on the two test blocks. The complex plane plot of the electrochemical impedance, obtained by least squares fitting of the equivalent circuit, R 1 , R 1 * and R 2 , R 2 * ; where R 1 and R 2 are the minimum value and maximum value of the real part of the impedance complex plane diagram of a typical recycled aggregate concrete test block, R 1 * and R 2 * are the minimum value and maximum value of the real part in the impedance complex plane diagram of a typical acrylic concrete test block; the influence factor is calculated by the formula. When the influence factor is larger, it indicates that the recycled aggregate has a greater influence on the interface transition zone, and vice versa . Through the above tests, relatively effective impact test results can be obtained, which can be widely used in the test of the impact of recycled aggregate on the concrete interface transition zone.

Description

technical field [0001] The invention relates to a method for detecting material performance, in particular to a method for detecting the degree of influence of recycled aggregate on concrete interface transition zone in recycled aggregate concrete, and belongs to the technical field of detection of building material performance. Background technique [0002] The development of the world has caused a lot of waste, and solid waste has caused serious damage to the environment. From the perspective of social sustainable development, how to effectively dispose and reuse solid waste is a top priority. Relevant statistics show that the concrete solid waste generated in the rebuilding and expansion of buildings and the demolition of old buildings in my country will reach 0.3-0.4 billion tons every year. The continuous development of recycled aggregate concrete has proposed a solution to this problem. Large-scale production of recycled aggregates will reduce the environmental impac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/02
CPCG01N27/02
Inventor 吴立朋梁甜甜刘昶宏孙少明
Owner 北京时代思动科技有限公司
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