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Device and method for detecting disintegration rate and stability of concrete on construction site

A construction site and concrete technology, which is applied to the field of devices for detecting concrete segregation rate and stability at the construction site, can solve problems such as insufficient representation of concrete stability, inconvenience for construction site tests, and complicated operation of segregation rate jumping table tests, and achieves structural Simple, reliable results and easy-to-use results

Inactive Publication Date: 2018-12-11
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the segregation rate sieve analysis test only characterizes its anti-segregation performance by detecting the proportion of concrete flowing through the 4.75mm square hole sieve slurry in the upper section of the container. This value is not enough to represent the stability of concrete, and the segregation rate of coarse aggregate vibration jumps The table test operation is more complicated, and it is inconvenient to carry out the test on the construction site

Method used

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  • Device and method for detecting disintegration rate and stability of concrete on construction site
  • Device and method for detecting disintegration rate and stability of concrete on construction site
  • Device and method for detecting disintegration rate and stability of concrete on construction site

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 A device for detecting the segregation rate and stability of concrete at a construction site is shown, including a container 1, a first opening 3, a second opening 4, a third opening 5, a first baffle 6, a second baffle 7, The third baffle plate 8, the bottom plate 9, the fixing device 10, the connecting bolt 11, the container 1 is provided with a bung 12, the top is provided with a handle 2, and the bottom is provided with a bottom plate 9.

[0027] Working process of the present invention is as follows:

[0028] When the present invention is used, the first opening 3, the second opening 4, and the third opening 5 are closed with the first baffle plate 6, the second baffle plate 7, and the third baffle plate 8, and then the concrete mixture is packed into In the container 1, fill the back and cover the bucke...

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Abstract

The invention discloses a device and method for detecting the disintegration rate and the stability of concrete on a construction site. The device comprises a material container, openings and baffles,wherein the top, the middle and the bottom of the material container are provided with the openings and the baffles; the baffles are connected to the bottoms of the openings through connecting bolts;and fixing devices are arranged on the two sides of the baffles and are arranged on the two sides of the openings and the two sides of the corresponding baffles separately and are used for fixing thebaffles so as to seal the openings. According to the device and the method, the disintegration rate and the stability of the concrete can be accurately tested, meanwhile, the stability of the concrete in the pumping process can be quantitatively predicted, and the pumpability of the concrete can be evaluated.

Description

technical field [0001] The invention relates to the field of concrete workability testing, in particular to a device and method for testing the segregation rate and stability of concrete at a construction site. Background technique [0002] The stability of concrete mainly refers to its ability to resist segregation, which is an important performance of fresh concrete. During the process of mixing, transportation, pumping and pouring, segregation may occur due to the sinking or floating of aggregates, resulting in stable Sexual deterioration. With the continuous rise of super high-rise buildings, the pumping distance of concrete continues to increase. During the super high-rise pumping process, the concrete stays in the pump pipe for a long time. Due to segregation, pipe plugging occurs frequently, which seriously affects the reliability of concrete. Pump sex. During the standing process before pouring and setting, due to the separation of aggregate and slurry, the distrib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/38
CPCG01N33/383
Inventor 李悦王瑞金彩云李亚强
Owner BEIJING UNIV OF TECH
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