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Ultra-high performance lightweight concrete taking pottery sand as lightweight aggregate and preparation method thereof

A lightweight concrete, ultra-high-performance technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of complex production process, self-heavy concrete, high production cost, and achieve a significant increase in strength, The effect of reducing cost and excellent mechanical properties

Inactive Publication Date: 2020-12-25
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to provide an ultra-high-performance lightweight concrete using pottery sand as a lightweight aggregate and its preparation method, which can solve the problems of large concrete weight, large shrinkage deformation, high production cost, and complicated production process. question

Method used

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  • Ultra-high performance lightweight concrete taking pottery sand as lightweight aggregate and preparation method thereof
  • Ultra-high performance lightweight concrete taking pottery sand as lightweight aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of ultra-high performance lightweight concrete that uses pottery sand as lightweight aggregate, and the concrete includes the following components in proportion by weight:

[0036] 524 parts of cement, 172 parts of superfine fly ash, 123 parts of microsilica

[0037] Particle size 0.60-1.18mm shale pottery sand 195 parts

[0038] Particle size 1.18-2.36mm shale pottery sand 195 parts

[0039] 15 parts of superplasticizer, 104 parts of steel fiber.

[0040] The cement is PO52.5 ordinary Portland cement.

[0041] Ultrafine fly ash is fly ash with a particle size not greater than 3 μm.

[0042] Silica fume is SiO2 content ≥ 94%, specific surface area ≥ 22000m 2 / kg of silica fume.

[0043] The pottery sand is high-quality shale pottery sand with a density grade of 800, a 1h water absorption rate of 4.0%, and a barrel pressure strength of 6MPa.

[0044] The high-efficiency water reducer is polycarboxylate high-performance water reducer, the liquid has a solid c...

Embodiment 2

[0046] An ultra-high-performance lightweight concrete using clay sand as a lightweight aggregate, the concrete includes the following components in proportion by weight:

[0047] 749 parts of cement, 246 parts of ultra-fine fly ash, 176 parts of silica fume

[0048] Particle size 0.60-1.18mm shale pottery sand 195 parts

[0049] Particle size 1.18-2.36mm shale pottery sand 195 parts

[0050] 21 parts of superplasticizer, 173 parts of steel fiber.

[0051] The cement is PO52.5 ordinary Portland cement.

[0052] Ultrafine fly ash is fly ash with a particle size not greater than 3 μm.

[0053] Silica fume as SiO 2 Content ≥ 94%, specific surface area ≥ 22000m 2 / kg of silica fume.

[0054] The pottery sand is high-quality shale pottery sand with a density grade of 800, a 1h water absorption rate of 4.0%, and a barrel pressure strength of 6MPa.

[0055] High-efficiency water-reducer is polycarboxylate high-performance water-reducer, the liquid has a solid content of 40% and a...

Embodiment 3

[0057] A kind of ultra-high performance lightweight concrete using pottery sand as lightweight aggregate, the concrete includes the following components in proportion by weight:

[0058] 600 parts of cement, 197 parts of superfine fly ash, 140 parts of silica fume

[0059] Particle size 0.60-1.18mm shale pottery sand 195 parts

[0060] Particle size 1.18-2.36mm shale pottery sand 195 parts

[0061] 17 parts of superplasticizer, 138 parts of steel fiber.

[0062] The cement is PO52.5 ordinary Portland cement.

[0063] Ultrafine fly ash is fly ash with a particle size not greater than 3 μm.

[0064] Micro silica fume is SiO2 content ≥ 94%, specific surface area ≥ 22000m 2 / kg of silica fume.

[0065] The pottery sand is high-quality shale pottery sand with a density grade of 800, a 1h water absorption rate of 4.0%, and a barrel pressure strength of 6MPa.

[0066] High-efficiency water-reducer is polycarboxylate high-performance water-reducer, the liquid has a solid content...

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Abstract

The invention relates to ultra-high performance lightweight concrete taking pottery sand as a lightweight aggregate. The concrete comprises the following components in parts by weight: 524-749 parts of cement, 140-246 parts of ultrafine fly ash, 123-176 parts of micro silicon, 190-200 parts of shale pottery sand with the particle size of 0.60-1.18 mm, 190-200 parts of shale pottery sand with the particle size of 1.18-2.36 mm, 15-21 parts of a superplasticizer, and 104-173 parts of steel fiber. According to the ultra-high-performance lightweight concrete taking the pottery sand as the lightweight aggregate and the preparation method of the ultra-high-performance lightweight concrete, the problems that concrete is large in dead weight, large in shrinkage deformation, high in production cost,complex in production process and the like can be solved. The working performance of the concrete is improved while the ultrahigh strength is realized, and the construction requirement of self-leveling is met.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an ultra-high-performance lightweight concrete using pottery sand as a lightweight aggregate and a preparation method thereof. Background technique [0002] With the development of my country's economic construction, there will be more and more large-span and super-high engineering constructions, and there are still many problems to be solved in the application of high-performance concrete. Ultra-high-performance lightweight concrete is a new type of structural material that combines the performance advantages of high-performance concrete and structural lightweight aggregate concrete. As a new material different from traditional ordinary concrete, ultra-high performance lightweight concrete has its own characteristics and advantages. Its advantages of light weight, high strength, and economy make it widely used in high-rise buildings, long-span bridges, marine enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/02C04B18/08C04B18/14C04B14/48C04B111/40
CPCC04B14/48C04B18/023C04B18/08C04B18/146C04B28/04C04B2111/40C04B2201/20C04B2201/50C04B2103/302Y02W30/91
Inventor 徐港丁超占世兵刘冬梅陈少坤
Owner CHINA THREE GORGES UNIV
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