Cement paste granulation quantification method

A technology of cement slurry and quantification method, which is applied in the direction of removing certain component weighing, measuring devices, instruments, etc., can solve the problems of agglomerated particle damage test, difficulty in achieving accuracy, inconvenient operation, etc., and achieve maintenance test Consistency, avoiding subjective errors, and stable test conditions

Active Publication Date: 2021-10-22
华润水泥技术研发(广西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to: aim at the limitation that exists in the existing cement slurry agglomeration water sieve method, propose the clean slurry agglomeration test method based on the combination of vibration screening and water sieve, its main purpose is to solve the existing water sieve test method. In the method, it is easy to cause the damage of agglomerated particles, which leads to inaccurate testing, inconvenient operation, and difficulty in achieving accuracy.

Method used

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  • Cement paste granulation quantification method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take PP-1 cement, and the test process is carried out in sequence according to the following steps:

[0027] Use polyethylene preservative film to wrap the outside and bottom of the 250μm square hole screen, and fix the preservative film on the screen with 2 rubber bands, and the preservative film is close to the bottom of the screen.

[0028] Fully mix the 1kg sample of PP-1 cement after standing still, and weigh 50g with an electronic balance. Gently pour 50g of cement into the sieve, place the sieve on an adjustable amplitude and time vibrating sieving instrument, cover the sieve cover, use the vibrating sieve to vibrate the cement with an amplitude of 0.2mm for 1min, and discharge the air in the cement. Strain in a sieve.

[0029] Open the vibrating screen cover, use a beaker to take 1000ml of pure water with a water temperature of 20°C, make the edge of the beaker close to the edge of the screen, and pour the water into the screen gently to avoid water directly po...

Embodiment 2

[0038] Take PP-1 cement, and the test process is carried out in sequence according to the following steps:

[0039] Use polyethylene preservative film to wrap the outside and bottom of the 250μm square hole screen, and fix the preservative film on the screen with 2 rubber bands, and the preservative film is close to the bottom of the screen.

[0040] Fully mix the 1kg sample of PP-1 cement after standing still, and weigh 100g with an electronic balance. Gently pour 100g of cement into the sieve, place the sieve on an adjustable amplitude and time vibrating sieving instrument, cover the sieve cover, use the vibrating sieve to vibrate the cement with an amplitude of 0.5mm for 0.8min, and discharge the air in the cement. Spread out in a sieve.

[0041]Open the vibrating screen cover, use a beaker to take 1000ml of pure water with a water temperature of 20°C, make the edge of the beaker close to the edge of the screen, and pour the water into the screen gently to avoid water dire...

Embodiment 3

[0045] Take PP-1 cement, and the test process is carried out in sequence according to the following steps:

[0046] Use polyethylene preservative film to wrap the outside and bottom of the 250μm square hole screen, and fix the preservative film on the screen with 2 rubber bands, and the preservative film is close to the bottom of the screen.

[0047] Fully mix the 1kg sample of PP-1 cement after standing still, and weigh 80g with an electronic balance. Gently pour 80g of cement into the sieve, place the sieve on an adjustable amplitude and time vibration screening instrument, cover the sieve cover, use the vibrating sieve to vibrate the cement with an amplitude of 0.3mm for 2 minutes, and discharge the air in the cement. Strain through a sieve.

[0048] Open the vibrating screen cover, use a beaker to take 1000ml of pure water with a water temperature of 20°C, make the edge of the beaker close to the edge of the screen, and pour the water into the screen gently to avoid water...

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Abstract

The invention discloses a cement paste granulation quantification method, which comprises the following steps of: making preparation for a test, adding water into cement, hydrating and granulating, taking cement granules, drying and weighing, dividing the obtained weight by the total weight of the cement to obtain an agglomeration rate, and representing the cement paste granulation degree by the agglomeration rate. The invention provides a cement paste granulation test method based on combination of vibration screening and water screening, and mainly aims at solving the problems that in an existing water screening test method, agglomerated particles are prone to being damaged, so that testing is inaccurate, operation is inconvenient, and accuracy is difficult to achieve. The method provided by the invention can realize more convenient test and more accurate test result.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a method for quantifying cement paste agglomeration. Background technique [0002] Cement is one of the most important basic building materials for national economic construction. At present, my country's annual output of cement exceeds 2.4 billion tons. Ordinary Portland cement is usually used in two ways, one is to make concrete with cement and sand and gravel aggregates, and the other is to use cement paste directly for wall approval, brick laying, masonry, etc. Construction, the latter is usually called the bubble slurry method. In the process of using the foam slurry method, it is often found that after the cement is added with water to make a clean slurry, many "bean paste-like" agglomerated particles appear in the cement clean slurry. This phenomenon is called cement slurry agglomeration. The granulation of cement paste leads to poor cement adhesion, which make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N1/28G01N1/38
CPCG01N5/04G01N1/28G01N1/286G01N1/38Y02W30/91
Inventor 韦怀珺曾荣宋洋
Owner 华润水泥技术研发(广西)有限公司
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