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Loading device for concrete durability test

A technology of durability test and loading device, which is applied in the direction of testing the strength of materials by applying a stable bending force, which can solve the problems of damage, prolong the test period, and cannot carry out experiments of multiple factors at the same time, and reduce labor intensity and height. The effect of low and saving equipment investment

Inactive Publication Date: 2010-07-14
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Although the technical solution disclosed in the above-mentioned patent application is "suitable for larger-sized concrete specimens, and can maintain no stress relaxation during long-term loading", however, due to the electronic Components and instruments are integrated with mechanical components, so they are inevitably damaged by various factors (such as temperature, various corrosive media, etc.) in environmental experiments after loading
In addition, one set of equipment can only conduct experiments on one set of test blocks, and it is impossible to conduct experiments on multiple factors at the same time, which will undoubtedly prolong the experiment cycle. However, to conduct experiments on multiple factors at the same time, it is necessary to purchase multiple sets of experimental equipment, which increases the number of experiments. investment is predictable

Method used

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  • Loading device for concrete durability test
  • Loading device for concrete durability test
  • Loading device for concrete durability test

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] The loading device of the concrete durability test in this example is as follows: Figure 1~3 shown in the bending force applying unit 1 and Figure 4~6 The shown stable bending force maintains unit 2.

[0024] see figure 1 , figure 2 and image 3 , the whole bending force applying unit 1 is a frame structure, it has a base 3, two ends of the base 3 are respectively provided with a guide column 4, and is arranged in the lateral symmetrical plane P of the base 3; a beam 5 is sleeved on On the guide column 4, a pressure sensor 6 is provided on the lower surface of its vertical center; an electric push rod 7 is respectively provided at the two ends of the transverse symmetrical plane P between the base 3 and the beam 5, and the two electric push rods 7 are located on the two guide columns. 4; the upper surface of the base 3 is provided with a vertical centerline 14.

[0025] see Figure 4 , Figure 5 and Figure 6 , the stable bending force holding unit 2 has a ba...

example 2

[0027] The loading device of the concrete durability test in this example is as follows: Figure 7 shown in the bending force applying unit 1 and Figure 8 The shown stable bending force maintains unit 2. Depend on Figure 7 and Figure 8 It can be seen that the two ends of the base 3 of the bending force application unit 1 in this example are respectively provided with two guide columns 4, and are symmetrically arranged on both sides of the transverse symmetrical plane P of the base 3; Two guide poles 9 are respectively provided at both ends, and are symmetrically arranged on both sides of the transverse symmetrical plane Q of the bottom plate 8 . Embodiments other than the above in this example are the same as Example 1.

[0028] The method for loading using the loading device for concrete durability test of the present invention will be briefly described below in conjunction with the accompanying drawings and Example 1.

[0029] see Figure 9 and combine Figure 1~6 ...

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Abstract

The invention discloses a loading device for a concrete durability test, which comprises a bending force application unit (1) and a stable bending force maintaining unit (2); when in loading, a concrete block to be tested is put between a bottom plate (8) and a lower horizontal plate (10); the whole stable bending force maintaining unit (2) is arranged between the base (3) and a cross beam (5) of the bending force application unit (1); and at this time, two electric push rods (7) pull down the cross beam (5) synchronously; and a pressure sensor (7) acts on the center of the upper surface of an upper horizontal plate (11). Because the bending force application unit (1) and the stable bending force maintaining unit (2) of the invention are mutually independent units, the loading device for concrete durability test can not only prevent the pressure sensor (6) and the electric push rods (7) in the bending force application unit (1) from contacting with harmful media and being damaged, but also cut the investment for the equipment of the experiments.

Description

technical field [0001] The invention relates to the durability test of concrete materials under the condition of constant load, in particular to an application device acting on the constant load on the concrete test block. Background technique [0002] Research on the durability of concrete is a hot topic in the field of civil engineering. A lot of manpower, material and financial resources are spent every year because of durability failure, maintenance and reinforcement at home and abroad. A large amount of literature shows that the durability of concrete under the coupling effects of loads, corrosive solutions, and dry-wet cycles has not been fully studied. However, the research on the durability of concrete under the coupling effects of multiple factors must be based on the test objectives. Design matching loading device. [0003] On October 1, 2008, the State Intellectual Property Office disclosed a "concrete multi-factor durability experimental device under the couplin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20
Inventor 焦楚杰魏晓峰
Owner GUANGZHOU UNIVERSITY