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Recycled concrete mesoscopic model construction method based on random polygon aggregate

A technology of recycled concrete and construction method, which is applied in the field of concrete research, can solve problems such as not considering the interface area, and achieve the effect of ensuring convexity and concavity

Inactive Publication Date: 2021-11-02
XIAN UNIV OF TECH
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Problems solved by technology

However, the above studies have not considered different interface regions, and the generated two-dimensional stochastic model still has certain limitations.

Method used

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  • Recycled concrete mesoscopic model construction method based on random polygon aggregate
  • Recycled concrete mesoscopic model construction method based on random polygon aggregate
  • Recycled concrete mesoscopic model construction method based on random polygon aggregate

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0051] Specific implementation (i.e. algorithm):

[0052] 1) Algorithm

[0053] (1) Define the particle size range of the polygonal aggregate (r min ,r max ), the delivery boundary range (width, height). The coordinates (x 0 ,y 0 ), the radius of a random circle generated based on the particle size range (r min / 2, r max / 2).

[0054] (2) Define the number of sides of the polygonal aggregate, the angle θ between each corner point and the x-axis, and the capture x of the coordinates of each corner point i =x 0 +Lcos(θ),y i =y 0 +Lsin(θ).

[0055] (3) Define the delivery rate of the polygonal aggregate model and the replacement rate of the recycled aggregate (that is, the percentage of the wrapped old mortar aggregate to the total aggregate).

[0056] (4) To define the thickness of the interface transition zone and the thickness of the old mortar, the required parameter assignment algorithm is as follows:

[0057] Define the thickness of the transition zone of the f...

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Abstract

The invention provides a recycled concrete mesoscopic model construction method based on random polygon aggregate. The recycled concrete is refined into a complex homogeneous material consisting of six-phase materials. Six-phase materials comprise aggregate, old mortar, new mortar, a first old interface transition area between the aggregate and the old mortar, a second old interface transition area between the old mortar and the new mortar and a new interface transition area between the aggregate and the new mortar, and different interface transition areas are constructed through a surface translation method. The obtained model is closer to an actual recycled concrete test block, and the damage process of the recycled concrete can be further studied from a mesoscopic level by adopting the model provided by the invention.

Description

technical field [0001] The invention relates to the field of concrete research, in particular to a method for constructing a mesoscopic model of recycled concrete based on random polygonal aggregates. Background technique [0002] With the acceleration of the social process, new buildings, roads, bridges and other buildings consume a large amount of concrete. At the same time, the demolition of old buildings and the influence of force majeure and other factors make the waste concrete continue to increase, and construction waste pollutes water sources. It consumes a lot of processing costs. Therefore, the recycling of waste concrete is a key research direction for the sustainable development of my country's building resources. [0003] Recycled concrete is a more complex multiphase composite material than concrete. Many scholars have done a series of macroscopic experiments on recycled concrete. Liu Guangting and others designed a series of experiments to obtain the tensile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F111/04G06F111/10G06F119/14
CPCG06F30/13G06F30/23G06F2119/14G06F2111/10G06F2111/04
Inventor 姚泽良崔婷婷
Owner XIAN UNIV OF TECH
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