A flow concrete rheological parameter determining method

A technology of fluid concrete and rheological parameters, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of low detection efficiency and high cost, and achieve the effect of avoiding interference from human factors

Inactive Publication Date: 2016-10-12
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These traditional methods have been widely used in actual engineering practice, but in actual engineering these methods have many shortcomings such as high cost and low detection efficiency.

Method used

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  • A flow concrete rheological parameter determining method
  • A flow concrete rheological parameter determining method
  • A flow concrete rheological parameter determining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like figure 1 As shown in the figure, in the specific implementation process of the program, the establishment of the discrete model of rheological concrete and the acquisition of test parameters mainly include the following steps:

[0032] Step 1, establish a rheological concrete discrete particle slump test model;

[0033] Step 2, using discrete elements to calculate the slump of fluid concrete;

[0034] Step 3: Substitute the calculated slump into formula (1) to calculate the yield stress of the flowing concrete:

[0035] τ 0 =ρ(300-s) / 270 (1)

[0036] In the formula: τ 0 - Yield stress; ρ - density of fluid concrete; S - slump.

Embodiment 2

[0038] like figure 2 As shown, for the L-box test, there are the following steps:

[0039] Step 1, establish the L-shaped box test model of rheological concrete discrete particles;

[0040] Step 2, using discrete elements to calculate the left height of the fluid concrete in the horizontal groove;

[0041] Step 3: Substitute the calculated parameters into formula (2) to calculate the yield stress of the fluid concrete;

[0042] τ 0 = ρgl 0 2 L [ h 0 + l 0 2 l n ( l 0 l 0 + 2 h ...

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Abstract

The invention provides a flow concrete rheological parameter determining method. The method realizes analogue simulation of the behavior of flow concrete via the discrete element granular flow method, simulates conventional concrete rheological test experiments by using the discrete element granular flow method, calculates the experiment parameter thereof according to a flow concrete simulation result, and finally determines the rheological parameter of the flow concrete according to a calculation formula. The method has the outstanding advantages of being simple, rapid, great in operability and low in cost.

Description

technical field [0001] The invention relates to a method for determining rheological parameters of fluidized concrete, which is used for simple and quick determination of rheological parameters of fluidized concrete, and belongs to the technical field of hydraulic structural materials. Background technique [0002] The fluid concrete in the prior art is a heterogeneous composite material composed of aggregate, cement slurry (or fine mortar), air, etc. Due to its complex and time-varying components, the most critical rheological mechanism is still unclear. , and has not formed a theoretically perfect mechanical parameter system. The traditional methods for determining the rheological parameters of fluid concrete are experimental methods such as slump test, ductility test, L-box test and rotational viscometer method. These traditional methods have been widely used in practical engineering practice, but these methods have many shortcomings such as high cost and low detection e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 田正宏苏伟豪
Owner HOHAI UNIV
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