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Temperature stress test-based same condition simulated maintenance test method and inversion simulated maintenance test method and system

A technology of temperature stress and test method, which is applied in the direction of controlling/regulating the system, controlling multiple variables at the same time, using stable tension/pressure to test the strength of materials, etc., and can solve problems such as the inability to test the mechanical properties of concrete

Active Publication Date: 2014-06-11
CCCC FOURTH HARBOR ENG INST +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the temperature stress test can only obtain the cracking sensitivity, volume deformation and early thermal performance of concrete specimens under different temperature histories, and it is still impossible to test the relevant mechanical properties of concrete under the same temperature history, such as resistance Compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, etc.

Method used

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  • Temperature stress test-based same condition simulated maintenance test method and inversion simulated maintenance test method and system
  • Temperature stress test-based same condition simulated maintenance test method and inversion simulated maintenance test method and system
  • Temperature stress test-based same condition simulated maintenance test method and inversion simulated maintenance test method and system

Examples

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Effect test

Embodiment 1

[0038] This example is an example of temperature stress test and maintenance under the same conditions, the specific process can be seen figure 2 .

[0039] (1) The system used in the same-condition curing test based on the temperature stress test in this example includes two devices: a temperature stress test machine and an environment simulation curing test box.

[0040] The temperature stress testing machine adopts the HYPY-II temperature stress testing machine of Beijing Hangyuan Pingyang Technology Development Co., Ltd., and its test mode includes several modes such as approximate adiabatic temperature rise, constant temperature control, and archived data matching.

[0041] Environmental simulation maintenance test chamber such as figure 2 As shown, it has a working room, which can accommodate multiple concrete simultaneous curing specimens a1, a2,,,, ar, r is a natural number greater than or equal to 2, in addition, the environmental simulation curing test box also S...

Embodiment 2

[0056] This example is a temperature and stress data inversion simulation test example, and its specific process can be seen in image 3 .

[0057] (1) The temperature stress data inversion simulation maintenance test system based on the temperature stress test in this example includes two parts: the temperature stress test machine and the environmental simulation maintenance test box.

[0058] The temperature stress testing machine adopts the HYPY-II temperature stress testing machine of Beijing Hangyuan Pingyang Technology Development Co., Ltd., and its test mode includes several modes such as approximate adiabatic temperature rise, constant temperature control, and archived data matching.

[0059] Environmental simulation maintenance test chamber such as figure 2 As shown, it has a working room, which can accommodate multiple concrete simultaneous curing specimens a1, a2,,,, ar, r is a natural number greater than or equal to 2, in addition, the environmental simulation cu...

Embodiment 3

[0075] Test the temperature stress test data and concrete mechanical performance data of a poured concrete pier under the same temperature history.

[0076] The concrete pier is a concrete pier that has been in normal use, and a temperature sensor is embedded inside the concrete solid component. Test its temperature history data and store that data.

[0077] Set up the system as shown in Example 2, import the temperature history data obtained by actual measurement into the temperature stress testing machine and the synchronous simulation curing test box respectively, and obtain the crack resistance of the concrete specimen in the temperature stress testing machine, and the early age Volume deformation, creep, stress relaxation, temperature sensitivity and other performance parameters; the environmental simulation curing test under the same conditions can measure the compressive strength, splitting tensile strength, flexural strength, elastic modulus and other mechanical prope...

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Abstract

The invention discloses a temperature stress test-based same condition simulated maintenance test method which comprises the following steps: (1) setting a temperature stress testing machine and an environmental simulated maintenance test box; (2) manufacturing a test piece a for the temperature stress test according to a preset concrete formula, and putting the test piece a into the temperature stress testing machine; (3) manufacturing a concrete synchronization maintenance test piece according to a formula the same that in the step (2), and putting the concrete synchronization maintenance test piece into the environmental simulated maintenance test box; (4) arranging an external temperature sensor at an input end of the environmental simulated maintenance test box into a core part of the test piece for the temperature stress test, and starting a temperature stress test of the temperature stress testing machine; (5) introducing real-time temperature data acquired by an external temperature sensor into the environmental simulated maintenance test box for maintaining according to the environmental simulated maintenance test box; and (6) closing the environmental simulated maintenance test box after the temperature stress test is ended, and testing the performance data of various test pieces. The invention provides a specific method and thought for researching thermodynamic property of concrete.

Description

technical field [0001] The invention is mainly developed for the influence of temperature and age on the maturity of concrete. It is a new concrete curing test method matched with the temperature stress test, which can be applied to the research or evaluation of the performance of concrete materials. The temperature, stress, strain, elastic modulus, linear expansion coefficient, compressive strength, splitting tensile strength, flexural Strength, volume deformation and other properties. Background technique [0002] Since the first application of the temperature stress testing machine in 1983 to study the concrete cracking performance of the Zillergrundl dam in Austria, with the continuous development of high-efficiency water reducers, measurement and control technology and mechanical processing technology, the use of this technology to evaluate concrete cracking sensitivity in foreign countries has been relatively low. Mature, the research of this technology mainly focuses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G05D27/02
Inventor 王迎飞王胜年宋雪峰李超熊建波
Owner CCCC FOURTH HARBOR ENG INST
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