Three-dimensional reconstruction method of concrete mesostructure model

Abstract

The invention belongs to the technical field of concrete model reconstruction, and relates to a three-dimensional reconstruction method of a concrete mesostructure model. A precision screw is used tocontrol the grinding interval of a concrete section. The continuous section image of a smaller layer spacing is acquired through repeated concrete grinding and photographing. When three-dimensional model reconstruction is carried out, the computation of the inter-layer difference of the image is reduced. The section image is aligned in the Z-axis direction when the continuous section image is acquired. The degree of calibration of the acquired continuous section image is high. A model basis is provided for the numerical simulation study of the material and the interface layer of each phase ofconcrete. The degree of fitting of extracted different phases is high. The precision of an established three-dimensional numerical model is high. The principle of the method is scientific and reliable. The acquisition method of the continuous section image is simple, feasible and highly cost effective. Compared with a model established by a CT scan image, the established concrete mesostructured three-dimensional model has less image interference, and can truly reflect the internal structural characteristics of the concrete and the structure distribution of each phase.

Description

Technical field: [0001] The invention belongs to the technical field of concrete model reconstruction, and relates to a method for three-dimensional reconstruction of a concrete mesostructure model, which can quickly and accurately acquire small-space continuous section images of multiphase materials. Background technique: [0002] Concrete (abbreviated as concrete) refers to the general designation of engineering composite materials that aggregate aggregates into a whole by cementitious materials. Concrete is composed of coarse aggregate, fine aggregate, cement hydrate, unhydrated cement particles, pores and cracks. Heterogeneous composite materials composed of the same composition; mixed with water (may contain admixtures and admixtures) in a certain proportion, the cement concrete obtained by mixing, also known as ordinary concrete, is widely used in civil engineering, and is often used in civil engineering Concrete is regarded as a macroscopic, homogeneous, and isotropic...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the CT scanning image is interfered by factors such as artifacts or noises in the current three-dimensional reconstruction technology, resulting in large errors in the extraction of different phases of concrete materials, and to provide a method for extracting various phases of concrete materials based on true-color concrete profile images. and 3D reconstruction methods

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