Method for judging water demand of cementing material

A gelling material and water demand technology, applied in the direction of analyzing materials, measuring devices, flow characteristics, etc., can solve the problems of large water demand and inability to intuitively express the water demand of blended materials, and achieve a practical and intuitive detection method Effect

Active Publication Date: 2013-01-16
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology

As a result, the test method in the national standard has the following problems: Since the water-cement ratio of 0.50 used in the original standard requires too much water, it cannot directly express the water demand of the blended material itself when it is used to measure a single blended material

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  • Method for judging water demand of cementing material
  • Method for judging water demand of cementing material
  • Method for judging water demand of cementing material

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with specific examples.

[0040] A method for judging the water demand of a gelling material of the present invention comprises the following steps:

[0041] First, mix fixed quality cement and standard sand to form contrast mortar, and add water until the contrast mortar reaches the specified fluidity, and the specified fluidity range is 130mm to 140mm;

[0042] Then, a certain amount of cement is replaced by admixture materials, and cement, admixture materials and standard sand are mixed to form experimental mortar, and water is added until the comparison mortar reaches the specified fluidity; the admixture materials are fly ash, slag powder or A mix of both.

[0043] The substitution of admixtures relative to cement is determined by the following steps:

[0044] Weigh the same amount of cement and admixture, add water with the same water-cement ratio respectively, and after manual mixing, compare ...

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Abstract

The invention discloses a method for judging water demand of a cementing material. The method comprises the following steps of: mixing cement with fixed mass and standard sand to form contrast mortar, and adding water until the fluidity of the contrast mortar reaches a specified standard; replacing a certain amount of the cement by using a blending material, mixing the cement, the blending material and the standard sand to form experimental mortar, and adding water until the experimental mortar reaches the specified standard; comparing the water added quantity of the contrast mortar with the water added quantity of the experimental mortar, and determining the water demand of the blending material; and weighing the cement and the blending material which are equal, respectively adding water with the same water cement ratio in the cement and the blending material, manually blending the cement and the blending material uniformly, and comparing the viscosity of the cement with the viscosity of the blending material to determine the substitution quantity of the blending material relative to the cement. By the method for judging the water demand of the cementing material, a rapid and visualized method for detecting the water demand of the cementing material is realized. The method for judging the water demand of the cementing material is high in practicality, visualized and rapid, and appropriate blending quantities of various materials can be compared when the materials are used simultaneously.

Description

technical field [0001] The invention relates to a method for judging water demand, in particular to a method for judging water demand for gelling materials. Background technique [0002] In concrete mix design and concrete mixture composition, cement, fly ash and slag powder are the most commonly used cementitious materials. Due to the great difference in the properties of admixtures across the country, especially the performance of fly ash and slag powder, mixing them into concrete as admixtures may lead to increased concrete viscosity or increased concrete segregation. In the practical application of engineering, there is another notable feature, that is, the addition of fly ash and slag powder at the same time. As for the admixture effect of the admixture material, usually in the mass-proportion test of concrete, the admixture amount and effect are determined after repeated trials, adjustments, and verifications. When a new admixture material is adopted, a large number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
Inventor 王桂玲王龙志张海霞张雪危鼎杜栋
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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