Confecting method of modern concrete and the mixing proportion thereof

A preparation method, concrete technology, applied in the direction of clay preparation equipment, mixing operation control, chemical instruments and methods, etc., can solve the problems of low preparation strength, low data accuracy, long test period, etc.

Inactive Publication Date: 2007-12-05
王昱海
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Problems solved by technology

[0003] The absolute volume method assumes that the sum of the absolute volumes of the components of the concrete mixture is equal to the volume of the concrete, and calculates the weight of each component material in the concrete, and then determines the concrete mix ratio through trial mixing adjustment; the method of assumed bulk density assumes that the bulk density of the concrete mixture is known. The weight of each component material of concrete in the concrete is adjusted by trial mixing to determine the concrete mix ratio; the preparation method of ordinary concrete is based on the water-cement ratio theory proposed by American D.A. Abrams in 1918 and applied so far, and the data is accurate The rate is low, the test volume is large, the preparation intensity is low, and the test period is long, all of which are total amount control based on experience

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  • Confecting method of modern concrete and the mixing proportion thereof
  • Confecting method of modern concrete and the mixing proportion thereof
  • Confecting method of modern concrete and the mixing proportion thereof

Examples

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example 1

[0211] Example 1. Use P.o42.5 grade cement (58Mpa), qualified sand, stone, fly ash S 1 , S 2 , High-efficiency water reducer, trial mix C110 plastic high-strength concrete.

[0212] 1. Determine the design strength of concrete: R s 28 =1.15×100=115MPa plastic high-strength concrete

[0213] 2. Determine the particle diameter and apparent density of concrete constituent materials:

[0214] Gravel particle diameter 05-10mm; fineness modulus greater than 2.9 medium sand; cement specific surface area 4.3-10.6 times fly ash S 1 , S 1 The specific surface area is 4.3-10.3 times more than fly ash S 2 . Px=2750, Py=2700, P c =2680,PS 1 =PS 2 =1900

[0215] 3. Determine the dosage of the main component materials for preparing nearly unit volume (close to one cubic meter) concrete:

[0216] e 集 =40%, A=0.8, W / C=0.26

[0217] X=2750×(0.8-0.4)=1100kg

[0218] Y=2700×(1-0.4)×0.4=648kg

[0219] C 灰 =2680×(1-0.4)×0.4 2 =257kg

[0220] C=C 胶 +C 灰 =138+257=395kg

[0221] ...

example 2

[0231] Example 2. Prepare C50 self-compacting concrete with P.o32.5 grade cement (42.1Mpa), high-efficiency water reducer, and qualified sand and gravel.

[0232] 1. Determine the design strength of concrete: R s 28 =58Mpa self-compacting concrete

[0233] 2. Particle diameter and apparent density of concrete constituent materials: gravel particle diameter 05-10mm; fineness modulus greater than 2.7 medium sand; Px=2750, Py=2700, Pc=2650;

[0234] 3. Determine the dosage of the main constituent materials for the preparation of nearly unit volume concrete:

[0235] e 集 =50%, A=0.8, W / C=0.28;

[0236] X=2750×(0.8-0.5)=825kg

[0237] Y=2700×(1-0.5)×0.5=675kg

[0238] C 灰 =2650×(1-0.5)×0.5 2 =331kg

[0239] C=C 胶 +C 灰 =138+331=469kg

[0240] W=469×0.28=131.3kg

[0241] 4. Concrete mix volume: V 砼 =0.3+0.5×0.5+469 / 2650+0.1313=0.858m 3 ;

[0242] Concrete porosity: e 砼 = 131.3 / 858 = 15.3%;

[0243] Five. Concrete preparation strength: m=log 1.9 15.3 = 4.24996,

[...

example 3

[0252] Example 3. Prepare C60 plastic permeable concrete with P.o42.5 grade cement (50.1Mpa), high-efficiency water reducer, qualified sand and gravel, ground mineral powder (fly ash), and gasoline. The ambient temperature is above 20°C and water seepage The rate is about 0.001 cm / s.

[0253] 1. Determine the design strength of concrete: R s 28 =69Mpa permeated concrete

[0254] 2. Particle diameter and apparent density of concrete constituent materials:

[0255] Crushed stone particle diameter 05-10mm; fineness modulus greater than 2.7 medium sand; cement specific surface area 4.3-10.3 times the finely ground mineral powder S 1 , S 1 The specific surface area is more than 4.3 times the ground fine mineral powder S 2 . Px=2750, Py=2700, Pc=2680, PS 1 =PS 2 =1900,P H =660

[0256] 3. Determine the amount of the main constituent materials of the concrete near unit volume:

[0257] e 集 =40%, A=0.8, W / C=0.28,

[0258] X=2750×(0.8-0.4)=1100kg

[0259] Y=2700×(1-0.4)×0...

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Abstract

The present invention is one kind of completely new concrete compounding process suitable for compounding various kinds of concrete, including high strength concrete and penetrative concrete. The present invention compounds concrete through optimizing the material proportion and size proportion of concrete without altering available concrete construction process and by means of the concrete theory of the present inventor. The compounded concrete has theoretic strength as high as 4.1466-5.4624 times the compression strength of the cement, and infinite theoretic service life similar to stone. The concrete compounding process is simple, practical, reliable, controllable in strength, low in cost and environment friendly.

Description

Technical field: [0001] The invention relates to a preparation method of cement concrete, a kind of building material, and the mixing ratio of cement concrete prepared by the method. Background technique: [0002] There are two methods for preparing common cement concrete before the present invention: assumed bulk density method and absolute volume method. There are also two methods for preparing lightweight aggregate concrete mixtures: loose volume method and absolute volume method. There is no accurate and effective preparation method for permeable concrete. [0003] The absolute volume method assumes that the sum of the absolute volumes of the components of the concrete mixture is equal to the volume of the concrete, and calculates the weight of each component material in the concrete, and then determines the concrete mix ratio through trial mixing adjustment; the method of assumed bulk density assumes that the bulk density of the concrete mixture is known. The weight o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/00B28C7/00
Inventor 王昱海
Owner 王昱海
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