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Supervision and inspection method for field workability of high-performance concrete

A high-performance concrete and inspection method technology, which is applied in the preparation of material inspection products, test samples, instruments, etc., can solve the problems of low efficiency and low accuracy, and achieve the effect of high speed, reducing errors and improving efficiency.

Pending Publication Date: 2020-09-04
郑州大学建设科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a supervision and inspection method for on-site workability of high-performance concrete, which solves the problems of low accuracy and low efficiency of existing inspection methods

Method used

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  • Supervision and inspection method for field workability of high-performance concrete

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Experimental program
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specific Embodiment 1

[0021] figure 1 It shows a supervision and inspection method of on-site workability of high-performance concrete, which includes the following steps: a. Obtain the numerical basis of the division standard through tests for five types of special products and conventional products in high-performance concrete, and collect them through engineering practice The testing standard is obtained after continuous optimization of the information data; b. Place the layered separation cylinder on a flat ground during the inspection, and then pour the mixed concrete to be tested into the storage bin of the layered separation drum. The storage bin includes The upper storage bin and the lower storage bin; c. Lift the layered separation cylinder and shake it 3-5 times in the vertical direction to eliminate the large pores in the concrete; d. Then put the layered separation cylinder on the vibration table and open Vibrating table, measure the height of the concrete in the upper storage bin and t...

specific Embodiment 2

[0024] This embodiment further illustrates the structure of the layered separation cylinder on the basis of the specific embodiment 1. The layered separation cylinder includes an upper cylinder 1 and a lower cylinder 2, and an upper cylinder 1 and a lower cylinder 2 are also provided. There is a partition plate 3, and a through hole is provided at the center of the middle part of the partition plate 3. The inner diameter of the through hole is the same as that of the upper cylinder 1 and the lower cylinder 2. One side of the upper cylinder 1 is provided with a rotating mechanism 4, which rotates The fixed shaft of the mechanism 4 is connected to the top of the partition plate 3, and one side of the middle part of the partition plate 3 is also provided with an upper cylinder leakage hole.

[0025] When measuring the concrete height in the upper storage bin of the upper cylinder, it is enough to directly observe the scale on the side of the upper cylinder, but to measure the qual...

specific Embodiment 3

[0027] In this embodiment, a fixing mechanism is added on the basis of the specific embodiment 1, and a fixing mechanism for easy fixing is also provided between the layered separation cylinder and the vibrating table.

[0028] It is convenient to fix the layered separation cylinder.

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Abstract

The invention discloses a supervision and inspection method for field workability of high-performance concrete, which comprises the following steps: a, respectively testing five types of special products and conventional products in the high-performance concrete to obtain a numerical basis of a division standard, and continuously optimizing to obtain a detection standard; b, pouring the stirred concrete to be detected into a containing bin of a layered segregation cylinder during inspection; c, lifting the layered segregation cylinder and shaking the cylinder for 3-5 times in the vertical direction; d, placing the layered segregation cylinder on a vibration table, rapidly measuring the height and the mass of the concrete in the upper material containing bin after vibration is completed, and measuring the height and the mass of the concrete in the lower material containing bin at the same time; and e, after measurement, calculating the density rho1 of the concrete in the upper materialcontaining bin and the density rho2 of the concrete in the lower material containing bin respectively to obtain a concrete segregation comparison coefficient I = rho2 / rho1, and comparing the obtainedconcrete segregation comparison coefficient with a detection standard for determination. The problem that an existing inspection method is low in accuracy and efficiency is solved.

Description

technical field [0001] The invention relates to a supervision quality control method for on-site delivery and acceptance of high-performance concrete, in particular to a supervision inspection method for on-site workability of high-performance concrete. Background technique [0002] Concrete engineering is separated into several industries in my country (mainly raw materials, preparation and mixing, and construction). Controlling the concrete process is an important responsibility of construction and supervision. The performance of concrete mixture is one of the key points of concrete quality control. 1. Concrete design and construction will put forward requirements on the performance of concrete mixtures such as slump. If there is a problem with the mixture, the quality of the concrete cannot be guaranteed. Therefore, the performance of the mixture is one of the key points of concrete quality control, especially High-performance concrete HPC has more prominent workability r...

Claims

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Application Information

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IPC IPC(8): G01N33/38G01N9/04G01N5/00G01N1/28
CPCG01N33/383G01N9/04G01N5/00G01N1/286
Inventor 贾雪军张晓萍王小艳张震徐斌李赛陈露邵旭卢东央张璐
Owner 郑州大学建设科技集团有限公司
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