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Concrete mix proportion optimization calculation method

A technology for optimizing calculation and mixing ratio, applied in the field of concrete, it can solve the problems of high viscosity and low viscosity of concrete, and achieve the effects of high concrete strength, good sense and high accuracy.

Pending Publication Date: 2022-04-15
ANGANG MINE CONSTR
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for optimizing the calculation of concrete mix proportions in view of the problems existing in the calculation of existing concrete mix proportions
The invention solves the problem of excessively high and low viscosity of concrete by theoretical calculation

Method used

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  • Concrete mix proportion optimization calculation method
  • Concrete mix proportion optimization calculation method
  • Concrete mix proportion optimization calculation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0357] 1. Calculate the proportion of mixed aggregate and apparent density:

[0358] 1-1. Find the percentage of each aggregate in the total weight of the aggregate

[0359] By formula 2:

[0360] G1a%=r 1 / (r 1 + r 2 + r 3 + r 4 )=1472 / (1472+1390+1618+1280)≈25.56%

[0361] G2a%=r 2 / (r 1 + r 2 + r 3 + r 4 )=1390 / (1472+1390+1618+1280)≈24.13%

[0362] S1a%=r 3 / (r 1 + r 2 + r 3 + r 4 )=1618 / (1472+1390+1618+1280)≈28.09%

[0363] S2a%=r 4 / (r 1 + r 2 + r 3 + r 4 )=1280 / (1472+1390+1618+1280)≈22.22%

[0364] 1-2. Calculate the apparent density of the aggregate after mixing:

[0365]According to the densities of the four substances are ρ 1 , ρ 2 , ρ 3 , ρ 4 , the mass mixing ratio is a%, b%, c%, d%, and the mass after mixing is M, then V1=M×a% / ρ 1 , V2=M×b% / ρ 2 , V3=M×c% / ρ 3 , V4=M×d% / ρ 4 , then: apparent density kg / m after mixing 3 : ρ=M / (V1+V2+V3+V4)=ρ 1 ρ 2 ρ 3 ρ 4 / (a%ρ 2 ρ 3 ρ 4 +ρ 1 b%ρ 3 ρ 4 +ρ 1 ρ 2 c%ρ 4 +ρ 1 ρ 2 ρ 3 d%)

[...

Embodiment 2

[0471] 1. Calculate the proportion of mixed aggregate and apparent density:

[0472] 1-1. Calculate the proportion of concrete aggregate

[0473] With embodiment 1.

[0474] 1-2. Calculate the apparent density d of the mixed aggregate 3 :

[0475] With embodiment 1.

[0476] 2. The total amount of selected cementitious materials is 305kg / m 3 , select the weight of cement accounted for 213.5kg / m 3 , The weight of mineral admixture is 91.5kg / m 3 , to calculate the cement a 3 %, mineral admixture b 3 % Each proportion, calculate the apparent density d after mixing cement and mineral admixtures 1 :

[0477] 2-1. Calculate the ratio of cement to the total amount of cementitious materials a 3 %:

[0478] By formula 4: a 3 %=C / (C+F)=213.5÷(213.5+91.5)=70%

[0479] Calculate the ratio of mineral admixture to the total cementitious materialb 3 %:

[0480] b 3 %=F / (C+F)=91.5÷(213.5+91.5)=30%

[0481] 2-2. Calculate the apparent density d of the cementitious material cem...

Embodiment 3

[0570] 1. Calculate the proportion of mixed aggregate and apparent density:

[0571] 1-1. Calculate the proportion of concrete aggregate:

[0572] With embodiment 1.

[0573] 1-2. Calculate the apparent density d of the aggregate after mixing 3 :

[0574] With embodiment 1.

[0575] 2. The total amount of selected cementitious materials is 360kg / m 3 , select the weight of cement as 252kg / m 3 , The weight of mineral admixture is 108kg / m 3 , to calculate the cement a 3 %, mineral admixture b 3 % Each proportion, calculate the apparent density d after mixing cement and mineral admixtures 1 :

[0576] 2-1. Calculate the ratio of cement to the total amount of cementitious materials a3 %:

[0577] By formula 4: a 3 %=C / (C+F)=252÷(252+108)=70%

[0578] Calculate the ratio of mineral admixture to the total cementitious materialb 3 %:

[0579] b 3 %=F / (C+F)=108÷(252+108)=30%

[0580] 2-2. Calculate the apparent density d of the cementitious material cement and mineral a...

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Abstract

The invention aims to provide a concrete mix proportion optimization calculation method for solving the problems existing in existing concrete mix proportion calculation. The method comprises the following steps: step 1, carrying out a raw material experiment; step 2, carrying out calculation according to a common concrete mix proportion method; step 3, listing different mix proportions of a cementing material; and step 4, optimizing the mix proportion. According to the method, the problems that the viscosity of concrete is too high and too low are solved through theoretical calculation.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to an optimal calculation method for concrete mix ratio. Background technique [0002] With the increase in the amount of cementitious materials in the concrete mix ratio, the viscosity of the concrete increases correspondingly, which affects the construction performance of the concrete. In the prior art, there is a method of adding a viscosity reducer to the concrete to reduce the viscosity of the concrete, such as adding phosphate ester, etc. , but the difficulty of concrete construction will increase accordingly, and the wastewater generated during concrete mixing and construction will pollute the environment and degrade slowly. It may also adversely affect the durability and strength of concrete. Contents of the invention [0003] The object of the present invention is to provide a method for optimizing the calculation of the concrete mix ratio in view of the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20C04B28/04G06F119/02
Inventor 杨宇林尹承龙李志刚陶贵闪刘宇张晓蕊汤春志舒景峰武成兵张俊博袁冰川徐海斌寇红梅
Owner ANGANG MINE CONSTR
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