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Construction method and application of a cement-based material early-age hydration prediction model mixed with hydration thermal control material

A technology of cement-based materials and predictive models, applied in the field of concrete construction, can solve problems such as laws and mechanisms that are not clear enough

Active Publication Date: 2020-03-17
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the law and mechanism of this material regulating cement hydration are not clear enough, and further analysis and characterization of its influence on the cement hydration process is needed in order to provide a theoretical basis and technical support for the prevention and control of cracks in actual concrete engineering.

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  • Construction method and application of a cement-based material early-age hydration prediction model mixed with hydration thermal control material
  • Construction method and application of a cement-based material early-age hydration prediction model mixed with hydration thermal control material
  • Construction method and application of a cement-based material early-age hydration prediction model mixed with hydration thermal control material

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Embodiment Construction

[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] The present invention designs a method for constructing a hydration prediction model of a cement-based material with a hydration heat-regulating material at an early age, which is used to realize the early-age hydration reaction rate for the target cement-based material mixed with a hydration heat-regulating material The construction of the model, in practical application, specifically includes the following steps:

[0038] Step 001. Pour a preset number of target cement-based material samples, and each target cement-based material sample has a different water-cement ratio w / c and different hydration heat control material content m H , each target cement-based material sample was stirred separately, put into a cylindrical glass tube with a diameter of 27 mm and a length of 200 mm for pouring, and the pouring heigh...

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Abstract

The invention relates to a construction method and application of a cement-based material early-age hydration prediction model mixed with a hydration heat regulating material. 2 According to the experimental data of the first echo peak amplitude value changing with the hydration time, the relationship between the model and the water-cement ratio, hydration heat control material content is obtained by model fitting; and the hydration reaction rate model is obtained by derivation , so that the model can reflect the influence of water-cement ratio and the amount of hydration heat-regulating material on the hydration rate; through this model, it is very convenient to know the effect of different water-cement ratios and different hydration heat-regulating materials at different times The hydration rate, without real-time testing by the test device, has profound significance for the performance research of cement-based materials.

Description

technical field [0001] The invention relates to a construction method and application of a cement-based material early-age hydration prediction model mixed with a hydration heat regulating material, and belongs to the technical field of concrete construction. Background technique [0002] With the promotion of modern concrete and the application of large-volume concrete structures, the problem of early cracks in concrete caused by heat of hydration has become more and more serious. In recent years, the crack prevention and control technology based on temperature field regulation and mixed with hydration heat control materials has been used in practical projects. The results are remarkable. The hydration heat control material is made of natural starch, which can adjust the cement hydration process, reduce the peak value of hydration heat release rate, effectively reduce the internal temperature rise of concrete and prevent and control cracks. However, at present, the law and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08G01N33/38
CPCG01N24/08G01N33/383
Inventor 赵海涛陈晓东陈硕万意吴霞洪彬秦骁蒋凯迪李士海贾瑞明程淑君丁健
Owner HOHAI UNIV