A Method for Predicting the Depth of Concrete Sulfate Attack
A technology of erosion depth and sulfate, applied in the field of concrete, can solve problems such as difficulty in determining environmental parameters, limitations of model engineering practicability, and lack of universality of models
Active Publication Date: 2016-09-21
SHENZHEN UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0017] It can be seen from the above model that the sulfate erosion depth of concrete is significantly affected by the external sulfate environment and the composition of concrete, such as the concentration, temperature and erosion mode of sulfate solution and the content of tricalcium aluminate in cement. Therefore, in order to study The time-varying model of concrete sulfate attack depth usually takes the above environmental factors into consideration, but it is difficult to determine the environmental parameters in actual engineering, which limits the engineering practicability of the model, and each model is not universal. sex
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0038] The depth of concrete sulfate attack is significantly affected by the external sulfate environment and the composition of concrete (such as the concentration, temperature, and erosion mode of sulfate solution, and the content of tricalcium aluminate in cement, etc.), but for any actual environment that suffers from sulfate attack For concrete structures, the development of its erosion depth must be the data statistics point in the predictive model. Therefore, non-destructive testing or chemical analysis techniques can be used to measure any two different time points (such as t 0 a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for predicting the corrosion depth of concrete sulfate. The method comprises the following steps: establishing a sulfate corrosion depth multi-parameter mathematics model according to the diffusion coefficient of a concrete structure, the surface sulfate concentration of concrete, the internal initial sulfate concentration of concrete, the chemical reaction stoichiometric number and the content of calcium aluminate in the concrete structure and with the combination of time parameters and diffusion coefficient decay indexes; acquiring a corrosion depth mathematics model of a moment to be predicted according to a first moment, a second moment and the corrosion depth corresponding to the moments; acquiring the corrosion depth of the moment to be predicted according to the corrosion depth mathematics model of the moment to be predicted. Due to adoption of the sulfate corrosion depth prediction model established by using the method, the corrosion depth can be predicted in practical engineering application without acquiring practical values of parameters such as the concentration of a sulfate solution, the temperature, the corrosion mode and the content of tricalcium aluminate in cement in an environment, and the sulfate corrosion depth model for predicting concrete is relatively high in engineering practicability.
Description
technical field [0001] The invention relates to the technical field of concrete, in particular to a method for predicting the sulfate erosion depth of concrete. Background technique [0002] Atkinson will C 3 The concrete specimen with 8% A content is completely immersed in the mixed solution of 0.19mol / L sodium sulfate and magnesium sulfate. After 5 years of corrosion, the corrosion depth of the specimen is 42mm. Through the regression analysis of the series data, an erosion Empirical models for depth prediction: [0003] X = 4.2 5 · C C 3 A 8 · ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
Inventor 周英武田浩隋莉莉邢锋
Owner SHENZHEN UNIV