Concrete collapsed slump on-line monitoring method and detection device

A detection device and slump technology are applied in the field of concrete slump on-line monitoring and detection devices, which can solve the problems of high price, inaccurate measurement accuracy, and inability to detect changes in slump, and achieve low cost and guaranteed measurement. The effect of precision

Active Publication Date: 2012-01-18
FUJIAN SOUTHERN HIGHWAY MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual way to detect the slump is to take part of the concrete that has been mixed this time after the concrete has been mixed, and use a slump meter to measure it off-line, and continue production according to the formula until it passes the inspection. Changes in other factors during the production process lead to Changes in slump cannot be detected
Another method is to detect the moisture content in concrete. The detection equipment is capacitive or uses microwaves to measure the moisture content in concrete to indirectly measure the slump. However, the measurement accuracy is not accurate after a period of use due to the condensation of concrete. , and the price is high

Method used

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  • Concrete collapsed slump on-line monitoring method and detection device
  • Concrete collapsed slump on-line monitoring method and detection device
  • Concrete collapsed slump on-line monitoring method and detection device

Examples

Experimental program
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Effect test

Embodiment 1

[0024] refer to figure 1 , a concrete slump detection device of the present invention, comprising a housing 15, a detection head 9, a load cell 10, a support 12, a drive motor is also provided behind the support 12, which is not shown in the figure, and a detection circuit and The computer, the detection head 9 , the load cell 10 and the support 12 are all installed in the housing 15 . An elastic body 11 is disposed between the shell 15 and the support member 12 . The detection head 9 is provided with an elastic block 16 for elastically supporting the detection head 9 to separate the detection device from the concrete and protect the detection device. The support member 12 is provided with through holes 13 and 14 for leading out the wires of the load cell 10 .

[0025] refer to figure 1 , one end of the detection head 9 is in direct contact with the concrete to be detected, and its shape is such that it can transmit force backwards and has a limited position in the forward ...

Embodiment 2

[0028] refer to figure 2 , A concrete slump detection device of the present invention includes a front housing 18, a rear housing 24, a detection head 19, a load cell 21, a support member 22, a handwheel 23, a detection circuit and a computer. One end of the detection head 19 is in direct contact with the concrete to be detected, and its shape is such that it can transmit force backwards and has a limited step 20 in the direction of forward contact with the concrete for force transmission. The other end is connected with the load cell 21 to apply force to the test On the force sensor 21, a support member 22 is provided at the rear end of the force sensor 21, and the support member 22 applies a preload through the hand wheel 23, and the hand wheel 23 is connected with the rear shell 24 through threads; the rear shell 24 and the front shell 18 are used through bolt holes 26 The bolts are connected to each other, and are fixedly connected to the mixing cylinder through the bolt ...

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Abstract

A concrete collapsed slump on-line monitoring method and a detection device. The method comprises the following steps: step one, establishing a corresponding relationship table between a detected value of the detection device and a concrete collapsed slump value; step two, mounting the detection device on a concrete production line; step three, obtaining a detected value by the detection device; step four, converting the detected value into a collapsed slump value; step five, if the collapsed slump value does not meet the requirement, controlling the adding amount of water for next pot stirring, and returning to step three; step six, detecting till a qualified collapsed slump value is detected, and performing real-time monitoring of the collapsed slump value during production. Compared with the prior art, the invention reflects the concrete viscosity by the force applied to the concrete; based on the corresponding relationship between the concrete viscosity and the collapsed slump, the collapsed slump of the concrete can be determined; the error problems that concrete measurement is performed off-line or the collapsed slump is determined by measuring water content are solved.

Description

technical field [0001] The invention relates to an online monitoring method and detection device for concrete slump. Background technique [0002] Concrete slump is an important index in the concrete production process. The usual way to detect the slump is to take part of the concrete that has been mixed this time after the concrete has been mixed, and use a slump meter to measure it off-line, and continue production according to the formula until it passes the inspection. Changes in other factors during the production process lead to Changes in slump cannot be detected. Another method is to detect the moisture content in concrete. The detection equipment is capacitive or uses microwaves to measure the moisture content in concrete to indirectly measure the slump. However, the measurement accuracy is not accurate after a period of use due to the condensation of concrete. , and the price is high. Contents of the invention [0003] The main purpose of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00G01N19/04
Inventor 严子利郑伟王惠风李金
Owner FUJIAN SOUTHERN HIGHWAY MECHANICAL
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