Method for testing concrete viscous effect evolution under erosion condition

A technology of concrete and determination method, which is applied to the analysis of solids by using sonic/ultrasonic/infrasonic waves, can solve the problem that the evolution of concrete viscous effect cannot be well characterized, and the determination method and calculation method of concrete material damage, and the measurement method of relaxation time are not proposed. Limited to problems such as one-dimensional states

Inactive Publication Date: 2015-02-25
SOUTHEAST UNIV
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Problems solved by technology

[0003] Chinese patent 200910152927.6 discloses a method for measuring the relaxation time of viscoelastic materials, which relates to the test method for the relaxation time of concrete under erosiv...

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  • Method for testing concrete viscous effect evolution under erosion condition
  • Method for testing concrete viscous effect evolution under erosion condition
  • Method for testing concrete viscous effect evolution under erosion condition

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Embodiment Construction

[0105] The present invention will be further described below in conjunction with the accompanying drawings.

[0106] Concrete cylindrical specimen (length 500mm, diameter 45mm) is used as the specimen to be tested, and its viscous effect evolution under erosion conditions is determined, including the following steps:

[0107] (1) Take out the non-metallic ultrasonic detector, and connect the transducer to the host firmly and stably;

[0108] (2) According to the size of the test piece, etc., set the parameters of the non-metallic ultrasonic detector. The parameter settings of the ultrasonic detector for this measurement are shown in Table 1 below.

[0109] Table 1 Parameters of non-metal ultrasonic detector

[0110]

[0111] (3) Mark a cylindrical concrete sample with a length of 500mm at intervals of 100mm along the length direction, and record it as 0, 1, 2, 3, 4 according to the increase of the distance from the starting end;

[0112] (4) Apply coupling agent evenly on...

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Abstract

The invention provides a method for testing concrete viscous effect evolution under an erosion condition. The method comprises concrete relaxation time evolution test and concrete damage evolution determination under an erosion condition. The method can be operated simply, provides a concrete relaxation time test method under an erosion condition, provides a concrete damage evolution determination method, can accurately test a concrete material viscous effect evolution rule under the erosion condition and does not damage a test piece to be detected.

Description

technical field [0001] The invention relates to a method for measuring the viscous effect evolution of concrete under erosion conditions, in particular to a method for measuring the relaxation time evolution and damage evolution of concrete materials. Background technique [0002] The viscous effect is one of the important characteristics reflecting the performance of concrete. The evolution of viscous effect can be characterized by the evolution of relaxation time and the evolution of concrete wave velocity and density. Relaxation time is an important parameter to characterize the constitutive model of concrete materials, and the evolution law of concrete relaxation time reflects the failure process of concrete under erosion conditions. Therefore, it is of great practical significance to study the evolution law of the viscous effect of concrete for predicting the failure degree of concrete under erosive conditions. [0003] Chinese patent 200910152927.6 discloses a method...

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Application Information

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IPC IPC(8): G01N29/11
Inventor 孙伟褚洪岩蒋金洋
Owner SOUTHEAST UNIV
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