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Mix proportion design method of high-toughness cement-based engineering composite material based on uniform experiments and ACE nonparametric regression

An engineering composite material and non-parametric regression technology, which is applied in design optimization/simulation, calculation, complex mathematical operations, etc., can solve problems such as unreliable design, and achieve the effect of reasonable and feasible optimization method, simple operation, and less number of experiments

Inactive Publication Date: 2017-11-07
KUNMING UNIV OF SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Orthogonal design experiment method cannot achieve a reliable design oriented to design goals when the relationship between the objective functions is unknown
The calculation method of micromechanics and fracture mechanics has high requirements on the test equipment, test process and test sample number in the test design process, and there are certain limitations in the use of this method

Method used

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  • Mix proportion design method of high-toughness cement-based engineering composite material based on uniform experiments and ACE nonparametric regression
  • Mix proportion design method of high-toughness cement-based engineering composite material based on uniform experiments and ACE nonparametric regression
  • Mix proportion design method of high-toughness cement-based engineering composite material based on uniform experiments and ACE nonparametric regression

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: as figure 1 As shown, a method of mix ratio design of high-toughness cement-based engineering composites based on uniformity test and ACE non-parametric regression includes the following steps:

[0023] (1) Determine the optimization target A of the mix ratio of high toughness cement-based engineering composite materials;

[0024] (2) Determine the main factors that affect the optimization target of the mix ratio of high-toughness cement-based engineering composites as test factors X i , i =(1,2,…m), m is the experimental factor X i Quantity, determining factor range [ X imin , X imax ];

[0025] (3) Determine the level of each test factor, select the uniform design table and the use table of the uniform design table according to the level number of each test factor and the number of test factors to carry out the uniform test design, and obtain the mix ratio table;

[0026] (4) Conduct tests according to the mix ratio table, and use ACE non-param...

Embodiment 2

[0028] Example 2: Firstly, the optimization goal, that is, the test goal is determined to obtain the maximum ultimate tensile strain of the high-toughness cement-based engineering composite material. According to the test objectives, the test parameters are determined as fly ash content, water-cement ratio content and fiber volume content, the factor is 3, and then the constraints are determined, that is, the value range of the test parameters, such as the range of fly ash content is 0.11 -3.0; the water-cement ratio is 0.42-1.2; the fiber volume is 0%-2%.

[0029] Select the uniform design table U* according to 3 factors and 9 levels 10 (10 8 ) and uniform design table U* 10 (10 8 ) using the table for a uniform design of experiments and conduct the experiments.

[0030] According to the obtained optimal mix ratio, the axial tension test was carried out to prove its rationality.

[0031] where U* 10 (10 8 ) uniform design table is shown in Table 1 below:

[0032] Tabl...

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Abstract

The invention discloses a mix proportion design method of a high-toughness cement-based engineering composite material based on uniform experiments and ACE nonparametric regression. The method comprises the following steps that firstly, the optimal objective of the mix proportion of the high-toughness cement-based engineering composite material is determined; then experimental factors are selected, the levels of each factor are determined, a uniform design table and an application table of the uniform design table are selected to combine the factors, a mix proportion table is obtained, and the experiments are conducted; experimental data is processed and analyzed by using the ACE nonparametric regression method, screening is conducted according to the experimental objective and constraint conditions, the optimal mix proportion of the high-toughness cement-based engineering composite material is obtained, and finally, an experiment is conducted according to the optimal mix proportion so as to verify the reasonability of the experiments. Compared with other experiment design methods, the optimization design method has the advantages that under the condition of the same number of the levels, the method has the fewest experiment times, and the experimental data has more uniformity and representativeness, and the method is simple in operation.

Description

technical field [0001] The invention relates to an optimal design method of the mix ratio of high-toughness cement-based engineering composite materials, in particular to design an optimal mix-ratio design method of high-toughness cement-based engineering composite materials based on uniform test design and ACE non-parametric regression method. Background technique [0002] The high-toughness cement-based engineering composite material is based on cement mortar, using polyethylene fiber (Polyethylene, PE) or polyvinyl alcohol fiber (Polyvinyl alcohol, PVA) as fiber reinforcement, and adding an appropriate amount of silica fume and first-grade fly ash , Chemical additives such as water reducer, thickener, defoamer, etc., are prepared according to the mixing process of "Standards for Test Methods of Fiber Concrete". High-toughness cement-based engineering composites exhibit strain-hardening, multi-slit cracking characteristics under tensile, bending, and shear loads, and exhib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/18
CPCG06F17/18G06F30/20
Inventor 李晓琴杜茜丁祖德宋志刚陈前均李洛克
Owner KUNMING UNIV OF SCI & TECH
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