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Hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and preparation method thereof

A technology of mixing fiber and concrete, which is applied in the field of concrete, can solve the problems of poor fiber dispersion and achieve the effects of improving durability, increasing bending toughness, and increasing safety and reliability

Active Publication Date: 2016-05-18
北京中企卓创科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the inventor found that the problem of poor fiber dispersion can be effectively improved by controlling the amount of fiber, the order of fiber incorporation, and the amount of high-efficiency polycarboxylate water reducer.

Method used

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  • Hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and preparation method thereof
  • Hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and preparation method thereof
  • Hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and preparation method thereof

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Embodiment 1

[0021] Table 1 Example mix ratio

[0022] for Table 1 The materials used in are described in detail:

[0023]

[0024] The grade of ordinary Portland cement used is PO.42.5.

[0025] The sand is construction sand, the particle gradation is 2-gradation area, and the fineness modulus is 2.7.

[0026] The water used complies with the provisions of "Concrete Water Standard" JGJ63-06, Table 1 The mass of reclaimed water is the mass of water after removing the water contained in the water reducing agent.

[0027] The stones are limestone crushed stones, using synthetic gradation, including three particle sizes ranging from (5-10) mm, (10-20) mm, (20-31.5) mm, and the particle size of the stones is from small to large. The mass ratio is 3:9:8.

[0028] The thick polyvinyl alcohol fibers used have a diameter of 1 mm, a length of 38 mm, and a density of 0.91×10 3 kg / m 3 .

[0029] The diameter of the fine polyethylene fibers used is 12 μm, the length is 12 mm; the densit...

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Abstract

The invention discloses hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from ordinary Portland cement, water, sand, gravel, polyvinyl alcohol fibers, crude polyolefin fibers and a water reducing agent. In the preparation process, the gravel, the sand, the cement and the crude polyolefin fibers are firstly poured into a blender and evenly stirred, then a mixed solution of the water reducing agent and the water is poured into the blender, and when the mixture is converted into a colloidal state from a particle state, the polyvinyl alcohol fibers are mixed for stirring; after the fibers are evenly dispersed, briquette pouring and maintenance are carried out. According to the hybrid fiber high-crack-resisting and high-tenacity airfield pavement concrete and the preparation method thereof, the crack resistance and tenacity of cement concrete can be remarkably improved, the durability of a civil aircraft airfield pavement in China can be improved, the structural quality of the airfield pavement can be comprehensively improved, the service life can be prolonged, and a large amount of maintenance and rebuilding cost is saved for the country.

Description

Technical field [0001] The present invention involves a mixed fiber high -cracking high -resilience airport road surface concrete and preparation method. It is a concrete technology field and is used to improve the poor durability and short service life of the civil aviation airport on my country. Background technique [0002] In order to ensure flight safety and normal use, the airport road surface should not only have sufficient carrying capacity, but also have good climate stability, impact resistance, toughness, contraction, crack resistance, fatigue and other properties.At present, most of my country's cement concrete airport roads cannot reach 30 years of design years. The average life expectancy is generally 15 to 20 years.Early corner of the road, the phenomenon of broken corners, broken plates, and falling angles caused a large amount of FOD damage.Traditional cement concrete airport road surface surface -to -pull strength and anti -fatigue performance is low, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B16/06
Inventor 刘岩邓宗才耿雪辉王辉
Owner 北京中企卓创科技发展有限公司
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