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

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...

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