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Building method and predicted application of cement-based material pore size distribution model

A technology of cement-based materials and pore size distribution, which is applied to the analysis of suspensions and porous materials, analysis materials, measurement devices, etc., to achieve good correlation results

Active Publication Date: 2016-05-25
HOHAI UNIV
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  • Application Information

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Problems solved by technology

[0003] In the traditional pore structure model research, only the pore size distribution of cement paste is described

Method used

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  • Building method and predicted application of cement-based material pore size distribution model
  • Building method and predicted application of cement-based material pore size distribution model
  • Building method and predicted application of cement-based material pore size distribution model

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Embodiment Construction

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] The construction method of a cement-based material pore size distribution model designed by the present invention specifically includes the following steps in the actual application process:

[0036] Step 001. Pour a preset number of cement-based material samples. The size of each poured cement-based material sample is 20mm×20mm×20mm, and each cement-based material sample has a different water-cement ratio ω / c and different blending. materials and their corresponding different blending amounts m, and then enter step 002; wherein, the blending materials include fly ash, slag, and silica fume.

[0037] Step 002. Place each cement-based material sample in a standard curing box for curing, and then proceed to step 003.

[0038] Step 003. For each cement-based material sample, observe according to the preset observati...

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Abstract

The invention relates to a building method of a cement-based material pore size distribution model. By testing cement-based materials with different water-cement ratios w / c, different admixtures and different admixture numbers m corresponding to the different admixtures, test data of changes of pore size distribution of the cement-based materials along with age t is acquired, model fitting is performed, the relations between the model and the water-cement ratios w / c, the age t and the admixture numbers m of the admixtures are obtained, and therefore the cement-based material pore size distribution model can reflect influences of the water-cementer ratios w / c, the age t and the admixture numbers m of the admixtures on cement-based material pore size distribution. Besides, the invention relates to predicted application of the cement-based material pore size distribution model. By designing the cement-based material pore size distribution model, pore size distribution of a cement-based material with any water-cementer ratio w / c and the admixture number m of any admixtures can be acquired quite conveniently.

Description

technical field [0001] The invention relates to a construction method and prediction application of a cement-based material pore size distribution model, belonging to the technical field of concrete construction. Background technique [0002] For the study of the relationship between the macroscopic properties of cement-based materials such as shrinkage, deformation, strength and microstructure, it is first necessary to find a suitable calculation model to characterize the distribution of the internal pore structure of the slurry. A suitable pore structure distribution model must first be established on the basis of the physical meaning of the pore structure, and at the same time be consistent with the test results. The pore structure models currently used are all semi-empirical models, that is, the model parameters are given on the basis of experiments, and then the pore size distribution at different water-cement ratios and different ages is obtained. [0003] In the trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/088
Inventor 赵海涛祁潇周亮亮邸云菲殷新龙黄煜煜杨睿
Owner HOHAI UNIV
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