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Concrete secondary vibration shrinkage measuring device

A secondary vibrating and measuring device technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of inability to carry out secondary vibrating of concrete, frequent manual operation, etc., and achieve simple structure, convenient operation, and high measurement accuracy high effect

Pending Publication Date: 2018-07-10
CHINA RAILWAY 12TH BUREAU GROUP 7TH CORPORATION LIMITED +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The instruments for measuring the shrinkage and deformation of concrete by the contact method mainly include horizontal concrete shrinkage meters and vertical concrete shrinkage meters. However, the existing contact method shrinkage and deformation measuring instruments cannot carry out secondary vibration of concrete and frequent manual operations during the test process. question

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  • Concrete secondary vibration shrinkage measuring device
  • Concrete secondary vibration shrinkage measuring device
  • Concrete secondary vibration shrinkage measuring device

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Embodiment Construction

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 to Figure 3 An embodiment of the concrete secondary vibration shrinkage measuring device of the present invention is shown, including a support base 1, on which at least two upright columns 2 are arranged at intervals, and a height-adjustable top is installed on the top of each upright column 2. Beam 3, between each adjacent two vertical columns 2 are provided with test piece bobbins 4 for concrete pouring and secondary vibration, each test piece bobbin 4 is carried on the support base 1, each test piece bobbin 4 A measuring device 5 is provided between the top of the device and the top beam 3 . When measuring, first adjust the height of the top beam 3, pour concrete and vibrate twice in the test tube 4, smooth the concrete on the top of the test tube 4 with relevant tools, and fix the top of the measuring device 5 on ...

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Abstract

The invention discloses a concrete secondary vibration shrinkage measuring device, which comprises a support base, wherein at least two upright posts arranged at intervals are arranged on the supportbase; a top cross beam with the adjustable height is arranged on the top of each upright post; a test piece tube pipe used for concrete casting and secondary vibration is arranged between every two adjacent upright posts; each test piece tube pipe is carried on the support base; a measuring device is arranged between the top of each test piece tube pipe and the top cross beam. The measuring devicehas the advantages that the structure is simple; the operation is convenient; the measurement precision is high.

Description

technical field [0001] The invention mainly relates to a technology for measuring the shrinkage and deformation properties of test pieces in different time periods before the initial setting of concrete, in particular to a secondary vibration shrinkage measuring device for concrete. Background technique [0002] In the initial stage of concrete setting or during the hardening process, the phenomenon of volume shrinkage occurs, that is, concrete shrinkage. Cracks caused by concrete shrinkage are the main reason for the formation of concrete cracks, which have a serious impact on the life cycle of the project. The secondary vibration can reduce the shrinkage cracks of concrete and reduce the damage to the quality of the project. In order to understand the shrinkage mechanism of concrete, it is necessary to measure the shrinkage rate of the concrete in accordance with the provisions of GB / T50082-2009. At present, concrete shrinkage measurement methods are divided into non-con...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00
CPCG01N19/00
Inventor 吴道洪徐步齐左明慧张学文张文学张乐康路明
Owner CHINA RAILWAY 12TH BUREAU GROUP 7TH CORPORATION LIMITED