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Device for measuring segregation resistance and bleeding of fresh concrete

A measuring device and concrete technology, which is applied in the field of civil engineering, can solve the problems that the anti-segregation and bleeding performance of fresh concrete cannot be realized at the same time, and can achieve the effect of short measurement time and accurate measurement

Inactive Publication Date: 2014-11-05
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing concrete measurement technology cannot realize the detection of anti-segregation and bleeding performance of fresh concrete at the same time, and then provide a new concrete measurement device for anti-segregation and bleeding

Method used

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  • Device for measuring segregation resistance and bleeding of fresh concrete
  • Device for measuring segregation resistance and bleeding of fresh concrete

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Specific implementation mode 1: Combination figure 1 with figure 2 To illustrate this embodiment, the device for measuring anti-segregation and bleeding of fresh concrete in this embodiment includes an outer cylinder 1, a middle cylinder 2, an inner cylinder 3, a turntable 4, a chassis 5, a support 7, a ring steel plate 8, a motor 9, T-shaped coupling 10, first metal mesh 11, second metal mesh 12, a plurality of balls 6, at least two first ribs 13 and second ribs 14, which have the same number as the first ribs 13, at least two The third rib 15 and the fourth rib 16 with the same number as the third rib 15;

[0013] The outer cylinder 1 is sleeved outside the middle cylinder 2, the bottom plate of the middle cylinder 2 is in contact with the bottom plate of the outer cylinder 1, the middle cylinder 2 is sleeved outside the inner cylinder 3, and the bottom plate of the inner cylinder 3 is in contact with the bottom plate of the middle cylinder 2. And the outer cylinder 1,...

specific Embodiment approach 2

[0018] Specific implementation manner two: combination figure 2 To illustrate this embodiment, the gap between the outer end surface of the first rib 13 and the second metal mesh 12 of this embodiment, the gap between the inner end surface of the second rib 14 and the outer surface of the annular side wall of the inner cylinder 3, The gap between the outer end surface of the three ribs 15 and the inner surface of the annular side wall of the outer cylinder 1, the gap between the inner end surface of the fourth rib 16 and the outer surface of the annular side wall of the middle cylinder 2, and the gap value is 0.5 mm . This arrangement better guarantees the concentricity of the inner cylinder 3, the middle cylinder 2 and the outer cylinder 1 during the rotation. The other composition and connection relationship are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination figure 1 To describe this embodiment, the hole diameter of the first through hole 3-1 is 8 mm and the hole diameter of the second through hole 2-1 is 5 mm, and the center distance between two adjacent holes is 10 mm. This setting facilitates the passage of water in the cement mortar. Other components and connection relationships are the same as those in the first or second embodiment.

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Abstract

The invention relates to a device for measuring segregation resistance and bleeding of fresh concrete, and aims to solve the problem that the segregation resistance and the bleeding performance of the fresh concrete cannot be detected by the conventional concrete measuring technology at the same time. An outer barrel, a middle barrel and an inner barrel are concentrically sleeved; a turnplate is arranged on the outer barrel; a chassis is arranged below the turnplate; a ball bearing is arranged between the turnplate and the chassis; the chassis is fixedly mounted on a bracket; an annular steel plate is fixedly mounted on the bracket; a motor is fixedly mounted on the annular steel plate; the square horizontal part of a T-shaped coupling is used for connecting the outer barrel with the turnplate; the lower end of the T-shaped coupling is fixedly connected with an output shaft of the motor; through holes are formed in the side walls of the inner barrel and the middle barrel uniformly; metal nets are paved on the inner surfaces of the inner barrel and the middle barrel uniformly; a rib strip on the wall of each barrel is used for concentrically rotating and driving moment; a drainage hole is formed in the outer barrel; and a bolt is screwed into a water outlet end of the drainage hole. The device is used for measuring the segregation resistance and the bleeding performance of the fresh concrete.

Description

Technical field [0001] The invention relates to a device for measuring anti-segregation and bleeding of concrete, in particular to a device for measuring anti-segregation and bleeding of fresh concrete, and belongs to the technical field of civil engineering. Background technique [0002] The segregation of concrete is the phenomenon that the cohesive force between the constituent materials of the concrete mixture is insufficient to resist the sinking of the coarse aggregate, and the components of the concrete mixture separate from each other, resulting in uneven internal composition and structure. It usually shows that the coarse aggregate and mortar are separated from each other, for example, dense particles are deposited at the bottom of the mixture, or the coarse aggregate is separated from the mixture as a whole. In the process of concrete transportation, vibrating, and pumping, the phenomenon of coarse aggregate sinking and water floating is called concrete bleeding. Anti-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
Inventor 杨英姿范广峰何剑
Owner HARBIN INST OF TECH
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