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Pressure-resistant polypropylene fiber concrete with mixed crude and fine fibers and preparation method of pressure-resistant polypropylene fiber concrete

A polypropylene fiber and concrete technology, applied in the field of civil engineering, can solve rare and other problems and achieve good practical effects

Inactive Publication Date: 2019-09-20
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the past, the invention of polypropylene fiber concrete mixed with thick and thin fibers was rare

Method used

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  • Pressure-resistant polypropylene fiber concrete with mixed crude and fine fibers and preparation method of pressure-resistant polypropylene fiber concrete
  • Pressure-resistant polypropylene fiber concrete with mixed crude and fine fibers and preparation method of pressure-resistant polypropylene fiber concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A compression-resistant polypropylene fiber concrete mixed with thick and thin fibers, consisting of the following mix ratio: cement 406kg / m 3 , sand 548kg / m 3 , Stone 1221kg / m 3 , water 207kg / m 3 .

Embodiment 2

[0033] A compressive polypropylene fiber concrete mixed with coarse and fine fibers, consisting of the following mix ratio: FF1 (0.9kg / m 3 ), cement 406kg / m 3 , sand 548kg / m 3 , Stone 1221kg / m 3 , water 207kg / m 3 .

Embodiment 3

[0035] A compression-resistant polypropylene fiber concrete mixed with thick and thin fibers, consisting of the following mix ratio: FF2 (0.9kg / m 3 ), cement 406kg / m 3 , sand 548kg / m 3 , Stone 1221kg / m3 , water 207kg / m 3 .

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Abstract

The invention discloses pressure-resistant polypropylene fiber concrete with mixed crude and fine fibers and a preparation method of the pressure-resistant polypropylene fiber concrete. The concrete consists of the following components in mix proportions: FF1 (fine fiber 1) (0-0.9kg / m<3>), FF2 (0-0.9kg / m<3>), FF3 (0-0.9kg / m<3>), FF4 (0-0.9kg / m<3>), CF1 (crude fiber 1) (0-6kg / m<3>), CF2 (0-6kg / m<3>), cement of 406kg / m<3>, sand of 548kg / m<3>, stone of 1221kg / m<3> and water of 207kg / m<3>. An optimal mix proportion for pressure resistance of polypropylene fiber concrete is obtained through indoor experiments, difficulties in improving the pressure resistance of the polypropylene fiber concrete can be solved through mixing of crude and fine fibers, and good practical significances can be achieved.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a compression-resistant polypropylene fiber concrete mixed with thick and thin fibers and a preparation method thereof. Background technique [0002] In the past, steel fibers were used to prevent cracking of hardened concrete and improve toughness. However, steel fibers are easy to rust, heavy, clumping, easy to damage mixing machines, magnetic interference, and high prices. Concrete mixing plants are generally reluctant to provide steel fiber commercial concrete. Polypropylene crude fiber is a new type of reinforced and toughened material, which has good corrosion resistance, light weight, easy dispersion, no damage to the mixing machine, no magnetic interference, and low price, which overcomes the shortcomings of steel fiber. Therefore, the mixed use of coarse and fine polypropylene synthetic fibers can improve the early cracking of concrete and improve the later cracking per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B16/06
CPCC04B28/00C04B2201/50C04B14/02C04B14/06C04B16/0633C04B20/0052
Inventor 杨欣林一哲梁宁慧于昂原浩杰杨伟聪徐吉斌
Owner FUJIAN UNIV OF TECH
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