Intelligent water reducing agent tester

A technology of water reducing agent and tester, applied in the direction of instruments, scientific instruments, flow characteristics, etc., can solve the problems of large influence of levelness, high cost, time-consuming, etc., to improve work efficiency, change detection indicators, and accurate detection methods. Effect

Inactive Publication Date: 2013-07-10
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The first method mentioned above is the detection method stipulated in the "Ordinary Concrete Mix Proportion Design Regulations" (JGJ55). The water reducing rate of the water reducing agent is greatly affected by material homogeneity and human factors, and the final water reducing rate The rate error is large, and it is time-consuming, laborious and costly
[0007] The second method is to use the flow expansion degree of the cement slurry on the glass plate as an index to determine the water reducing rate. The measurement of the flow expansion degree value is greatly affected by human factors and the levelness of the glass plate, and the final water reduction rate is determined. The error of the water rate is large, and the disadvantages of repeated tests cannot be avoided

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1 Determination of water reduction rate of intelligent water reducing agent tester: turn on the instrument, adjust the program of the instrument to the test program of water reduction rate measurement, fill the water storage tank (3) with water, and weigh an equivalent amount of fresh cement six Pour parts into the six test tubes 0, 1, 2, 3, 4, 5 (11) respectively, press the water release button of the single-chip microcomputer control part (10), and the program automatically controls the water output of the water storage tank (3) Controller 0, 1, 2, 3, 4, 5 (14), sequentially inject P0, P1, P2, P3, P4, P5 into the six test tubes 0, 1, 2, 3, 4, 5 (11) The amount of water, and pour the same amount of water reducing agent into the test tubes 1, 2, 3, 4, 5 (11) respectively, put down the fixing frame (9) of the stirring mechanism, and make the stirring blade (4) Submerged in the cement, press the motor button of the single-chip microcomputer control part (10), the ...

Embodiment 2

[0022]Example 2 Determination of the loss of fluidity of cement slurry over time by intelligent water reducing agent tester: turn on the instrument, adjust the built-in program of the instrument to the test program of fluidity loss of cement slurry over time, and test the six test tubes 0, 1, and 2 , 3, 4, 5 (11) into the same amount of cement, and then use the single-chip microcomputer control part (10) to issue instructions to the water storage bin water output controller 0, 1, 2, 3, 4, 5 (14) , inject the same amount of water P and the same amount of water reducing agent into the six test tubes 0, 1, 2, 3, 4, 5 (11), and put down the stirring mechanism fixing frame (9), so that the stirring blade (9) After submerged in the cement, the single-chip microcomputer control part (10) sends an instruction to the stirring motor (6), and the stirring motor (6) rotates at a low speed to mix water, cement and water reducing agent. At time t1 Get the cement particle resistance F0, F1, ...

Embodiment 3

[0023] Example 3 Compatibility detection of admixtures and cement with intelligent water reducing agent tester: turn on the instrument, adjust the built-in program of the instrument to the compatibility test program of admixtures and cement, when selecting an admixture for a certain cement, each test Select an admixture and add it into the cement slurry of the six test tubes 0, 1, 2, 3, 4, 5 (11) according to different dosage Lx, and measure the cement particle resistance Fx in the cement slurry at time t; When choosing cement for a certain admixture, select a cement for each test and add the admixture with different dosage Lx, and measure the cement particle resistance Fx in the cement slurry at time t, and then draw the abscissa with the dosage Lx , the resistance value Fx of cement particles in the cement paste is a function curve of the ordinate, the single-chip microcomputer control part (10) analyzes and compares multiple tests, the amount of admixture Lx is low, the resi...

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Abstract

The invention discloses a device for rapidly and accurately determining the water reduction rate of a water reducing agent, rapidly judging the compatibility of additives and cement and confirming cement paste fluidity loss. The device comprises a base, test tubes, stirring motors, stirring shafts, stirring blades, a stirring mechanism fixing rack and a singlechip control part from bottom to top. The device changes detection indexes of a conventional experiment method; the cement grain resistance values in cement paste in different dispersion states is detected by sensors on the stirring shafts so as to express the fluidity of the cement paste; and with combination of the test tubes for experiments and a singlechip, an experiment process and data analysis are carried out synchronously, so that the purpose of rapid detection is achieved. The device has the advantages that the water reduction rate of the water reducing agent is rapidly and accurately tested, the compatibility of the additives and the cement can be rapidly judged, and the cement paste fluidity loss under the action of the water reducing agent are determined; and the three experiment processes are modularized and combined, so that the working efficiency is improved, the experiment material waste is reduced, and the cost is lowered.

Description

technical field [0001] The patent of the present invention relates to the method and device of the water reducing agent test, more specifically, the patent of the present invention relates to a method for quickly and accurately measuring the water reducing rate of the water reducing agent, quickly determining the compatibility between the admixture and the cement, and determining the A device for the loss of cement slurry fluidity over time. Background technique [0002] Water reducing agent is a kind of surfactant, which can diffuse, lubricate and moisten cement particles, and can make cement particles evenly distributed, so as to reduce water consumption, reduce water-cement ratio and save cement, so as to improve working performance. [0003] Water reducers are widely used in high-performance concrete, and have a significant effect on improving the mechanical properties and compactness of concrete. [0004] The compatibility between water reducing agent and cement, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/10G01N33/00
Inventor 熊春龙李九苏关宏信
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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