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Low-cost high-strength C45 fine aggregate concrete and preparation method thereof

A fine stone concrete, high-strength technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of concrete unable to meet market needs, reduced concrete strength, and reduced compressive capacity, etc. Filling effect, good self-compactness and low production cost

Inactive Publication Date: 2020-08-11
ZHONGQINGDA PREFABTED BUILDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, by simply adding fly ash to solve the air bubble problem, there are still some defects: the addition of fly ash leads to the reduction of cement material, which leads to the reduction of concrete strength and the reduction of compressive capacity, and the prepared concrete satisfies the Can't meet market needs

Method used

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  • Low-cost high-strength C45 fine aggregate concrete and preparation method thereof
  • Low-cost high-strength C45 fine aggregate concrete and preparation method thereof
  • Low-cost high-strength C45 fine aggregate concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] according to figure 1 A low-cost high-strength C45 fine stone concrete is shown, the basic materials used in the fine stone concrete are composed of coarse aggregate, fine aggregate, cementitious material, active material, admixture and water, and are calculated according to the unilateral amount , the consumption of each component of this fine stone concrete is as follows:

[0030] Water cement ratio: 0.35

[0031] Gravel: 1118kg / m 3

[0032] Sand: 602kg / m 3

[0033] Cement: 500kg / m 3

[0034] Admixture: 6.02kg / m 3

[0035] Water: 175kg / m 3

[0036] Wherein, the coarse aggregate is specifically grade 9.5 crushed stone with a maximum diameter of 9.5 mm;

[0037] The fine aggregate is specifically medium-coarse sand of 0.15-0.5mm;

[0038] Described cement is specifically P.O42.5 ordinary portland cement;

[0039] The fly ash is Class II fly ash discharged from the power station;

[0040] The average particle size of the nano-silica is 7-40nm, and the param...

Embodiment 2

[0049] according to figure 1A low-cost high-strength C45 fine stone concrete is shown, the basic materials used in the fine stone concrete are composed of coarse aggregate, fine aggregate, cementitious material, admixture and water, and the fine stone concrete The dosage of each component of stone concrete is as follows:

[0050] Water cement ratio: 0.35

[0051] Gravel: 1118kg / m 3

[0052] Sand: 602kg / m 3

[0053] Cement: 450kg / m 3

[0054] Fly ash: 50kg / m 3

[0055] Admixture: 6.02kg / m 3

[0056] Water: 175kg / m 3

[0057] The amount of fly ash is 10% of the cementitious material, and the fly ash is mixed with nano silicon dioxide;

[0058] Wherein, the coarse aggregate is specifically grade 9.5 crushed stone with a maximum diameter of 9.5 mm;

[0059] The fine aggregate is specifically medium-coarse sand of 0.15-0.5mm;

[0060] Described cement is specifically P.O42.5 ordinary portland cement;

[0061] The fly ash is Class II fly ash discharged from the power...

Embodiment 3

[0071] according to figure 1 A low-cost high-strength C45 fine stone concrete is shown, the basic materials used in the fine stone concrete are composed of coarse aggregate, fine aggregate, cementitious material, admixture and water, and the fine stone concrete The dosage of each component of stone concrete is as follows:

[0072] Water cement ratio: 0.35

[0073] Gravel: 1118kg / m 3

[0074] Sand: 602kg / m 3

[0075] Cement: 400kg / m 3

[0076] Fly ash: 100kg / m 3

[0077] Admixture: 6.02kg / m 3

[0078] Water: 175kg / m 3

[0079] The amount of fly ash is 20% of the cementitious material, and the fly ash is mixed with nano silicon dioxide;

[0080] Wherein, the coarse aggregate is specifically grade 9.5 crushed stone with a maximum diameter of 9.5 mm;

[0081] The fine aggregate is specifically medium-coarse sand of 0.15-0.5mm;

[0082] Described cement is specifically P.O42.5 ordinary portland cement;

[0083] The fly ash is Class II fly ash discharged from the pow...

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Abstract

The invention discloses low-cost high-strength C45 fine aggregate concrete and a preparation method thereof, and particularly relates to the field of concrete preparation processes. Basic materials used by the fine aggregate concrete are composed of coarse aggregate, fine aggregate, a cementing material, an active material, an additive and water. The fine aggregate concrete comprises 1118kg / m < 3> of coarse aggregate, 602kg / m < 3 > of fine aggregate, 500kg / m < 3 > of cementing material, 2.4 kg / m < 3 > of active material, 6.02 kg / m < 3 > of additive and 175 kg / m < 3 > of water. The use amountof cement is reduced, the fly ash is adopted to replace a large amount of cement, the cost of the fine aggregate concrete can be reduced, the fluidity of the fine aggregate concrete can be improved, the strength can be better improved by adopting the nano silicon dioxide, and the prepared concrete is not easy to foam, high in density, high in strength and strong in pressure resistance by adoptingthe mixed grading of the coarse and fine aggregates and the nano silicon dioxide.

Description

technical field [0001] The invention relates to the technical field of concrete preparation technology, more specifically, the invention relates to a low-cost high-strength C45 fine stone concrete and a preparation method thereof. Background technique [0002] Dense concrete has the advantages of good compactness, durability, and stable related mechanical properties, making it favored by all walks of life in material application. The advantages of self-compacting concrete are reflected even when the steel bars of the building frame are too dense, the vibrating equipment is not well vibrated, or the formwork to be poured is complex and varied, and the vibrating equipment cannot be operated. out, it can compact itself without vibrating. [0003] Self-compacting concrete can reduce the construction difficulty of complex engineering construction, but self-compacting concrete is easy to form air bubbles during the hardening process, which will affect the performance of concrete....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B40/00C04B14/06C04B18/08
CPCC04B28/04C04B40/0028C04B2201/50C04B2201/52C04B18/08C04B14/02C04B14/06C04B14/062C04B2103/302Y02W30/91
Inventor 谢帮华
Owner ZHONGQINGDA PREFABTED BUILDING CO LTD
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