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Tester of cement setting time

A time measurement and cement setting technology, which is applied in the field of cement setting time tester and cement performance quality measurement device, which can solve the problems of complicated operation and low work efficiency.

Inactive Publication Date: 2013-06-19
ZHEJIANG TUGONG INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problems of the above-mentioned cement setting time tester are as follows: first, the work efficiency is low, and the setting time of one cement sample can only be measured at a time; second, the operation is complicated, and the height adjustment button must first be turned to adjust the test needle during a measurement. To the position where it is in contact with the surface of the cement slurry, press the test needle fixing button to release the test needle

Method used

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: The test needle head position sensing device includes a distance sensor 13 in the vertical direction and a test needle displacement sensor 14 , and the distance sensor 13 and the test needle displacement sensor 14 are respectively connected to the controller 7 with signals. The distance sensor 13 in the vertical direction can measure the distance between the test needle control frame 4 and the cement sample surface on the test formwork frame 8 on the base 1, and the test needle displacement sensor 14 can measure the distance between the test needle control frame 4 and the test needle control frame. 4 position, the information of the position of the test needle head can also be obtained, and the signal when the test needle head touches the cement sample can be obtained by integrating the above information through the controller 7.

Embodiment 2

[0023] Embodiment 2: The test needle position sensing device is an electrification sensor. When the test needle 3 can be connected to a weak current, when the test needle touches the cement sample, the electrification sensor will sense the test needle control frame 4 The current, so as to obtain the signal when the test needle touches the cement sample. Since its structure is relatively simple, the accompanying drawings are omitted.

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Abstract

The invention discloses a tester of cement setting time. The tester of the cement setting time comprises a base, a support, a test needle and a test needle control support, wherein the base and the support are perpendicularly fixed, and the test needle is fixed on the test needle control support. The tester of the cement setting time further comprises a control support working seat and a controller, wherein a plurality of test mould frames are arranged on the base, the control support working seat is provided with control support positions which are equal to the test mould frames in number, the control support working seat is further provided with a control support moving drive, and the control support moving drive is connected with the test needle control support in a transmission mode. The test needle control support is provided with a test needle drive, a test needle clamping block, a test needle clamping block drive and a test needle head position inductive device, wherein the test needle drive is connected with the test needle in a transmission mode, a clutch is arranged between the test needle drive and the test needle, and the test needle arranged on the test needle clamping block, and the test needle clamping block are connected with the test needle drive in a transmission mode. The controller is respectively connected with the control support moving drive, the test needle drive and the test needle head position inductive device in a signal mode. The tester of the cement setting time has the advantages of being high in working efficiency, simple in operation, and the like.

Description

technical field [0001] The invention relates to a measuring device for cement performance and quality, more specifically a cement setting time measuring instrument, which belongs to the technical field of geotechnical testing instruments. Background technique [0002] Setting time is one of the main indicators of cement quality. The standard GB175-2007 "General Portland Cement" stipulates the initial setting time and final setting time of Portland cement. At the same time, the national standard GB 1346-2011-T is a method for determining the setting time of cement. Cement setting is determined by whether the test needle can sink into a certain depth of the sample installed in the test mold within a certain period of time. [0003] Determination of initial setting time: The first measurement is carried out 30 minutes after the specimen is cured in the moisture curing box and water is added. When measuring, take out the test mold and put it under the test needle. After the te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/38
Inventor 陈志明王士明
Owner ZHEJIANG TUGONG INSTR
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