Concrete hydrothermal curing and its stress-strain integration test device and test method

A stress-strain and testing device technology, which is applied in the direction of measuring devices, test sample preparation, instruments, etc., can solve the problems of unsuitable steam curing concrete swelling and shrinkage stress research, different height-to-diameter ratios, and large differences in results, etc. , to achieve the effect of eliminating low repetition rate of test results, avoiding data distortion, and eliminating data drift
CN111912686BActive Publication Date: 2021-08-17CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2021-08-17

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Abstract

The invention discloses a concrete hydrothermal curing and its stress-strain integrated testing device and testing method, which relates to the technical field of civil engineering material testing; the integrated testing device consists of a circulating water bath system, a mold system, a strain monitoring system and a stress-strain analysis system. The calculation program and other parts are composed; the full automatic and accurate collection and analysis of the internal stress and strain of concrete during the hydrothermal unsteady state curing process is realized, and the traditional contact hoop strain collection is converted into the non-contact radial length change collection, which solves the problem It solves the problems of data drift caused by pasting resistive strain gauges, low repetition rate of test results, and interference of hydrothermal unsteady conditions on test equipment and data acquisition process. It is suitable for real-time analysis and presentation of concrete interior in hydrothermal curing environment. The monitoring of stress and strain evolution rules provides support for the regulation of concrete hydrothermal curing conditions and performance optimization.
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Description

technical field

[0001] The invention belongs to the technical field of civil engineering material testing, and in particular relates to concrete hydrothermal curing and its stress-strain integration testing device and testing method. Background technique

[0002] my country is currently in the golden period of high-speed railway construction. The use of steam-cured concrete prefabricated components, such as track slabs, sleeper rails and simply supported box girders, has greatly accelerated the pace of high-speed railway construction in my country, shortened the construction period, and has significant economic benefits. benefit.

[0003] However, research in recent years has found that accelerated curing processes such as hydrothermal or steam will cause thermal damage to concrete (products), resulting in concrete (products) prone to swelling and deformation, coarsening of pore structure, and thermal embrittlement, etc. Quality defects will adversely affect the structural s...

Claims

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