CN212800176U

CN212800176U - Porous concrete fiber

Info

Publication number: CN212800176U
Application number: CN202021453454.1U
Authority: CN
Inventors: 王勇忠; 杨程
Original assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Current assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-26
Anticipated expiration: 2030-07-21

Abstract

The application discloses concrete fiber of porous type relates to cement base combined material technical field, and it includes the monofilament, the shaping has the joint hole on the monofilament surface, the shaping of joint hole has a plurality ofly on polypropylene monofilament surface, and this application has the effect that improves the cohesiveness between concrete fiber and cement base member.

Description

Porous concrete fiber

Technical Field

The application relates to the technical field of cement-based composite materials, in particular to a porous concrete fiber.

Background

The concrete fiber is a high-performance fiber specially used for concrete/mortar, can effectively control microcracks caused by factors such as plastic shrinkage, drying shrinkage and temperature change of the concrete/mortar, prevent and inhibit the formation and development of the concrete primary cracks, greatly improve the crack resistance and impermeability and the abrasion resistance of the concrete/mortar, increase the toughness of the concrete, and further prolong the service life of the concrete.

Concrete has the defects of large brittleness, low tensile strength, poor toughness and the like, and in the prior art, concrete fibers are usually added into concrete to improve the tensile strength and the toughness of the concrete.

By adopting the scheme, the surface of the common concrete fiber is set to be a rough surface. However, there is a need for improvement in that the engaging force between the outer surface of the concrete fiber arranged in a rough manner and the cement matrix is not sufficiently large, and the adhesion between the concrete fiber and the cement matrix is not sufficiently strong.

SUMMERY OF THE UTILITY MODEL

In order to improve the adhesion between concrete fibers and a cement matrix, the present application provides a porous concrete fiber.

The porous concrete fiber adopts the following technical scheme: a porous type concrete fiber comprises a monofilament, wherein a combination hole is formed on the outer surface of the monofilament, and a plurality of combination holes are formed on the outer surface of a polypropylene monofilament.

Through adopting above-mentioned technical scheme, when pouring, cement gets into in the bonding hole on the monofilament surface, when cement sets, helps improving the interlock between monofilament and the cement base member, and then helps improving the cohesiveness between concrete fibre and the cement base member.

Preferably: and a communication hole is communicated between any two of the combination holes.

By adopting the technical scheme, when pouring is carried out, cement enters the combining hole on the outer surface of the monofilament firstly and then enters the communicating hole along the combining hole, so that the cement matrix and the monofilament are combined more tightly, and the improvement of the cohesiveness between the concrete fiber and the cement matrix is facilitated.

Preferably: the diameter of any combination hole is 0.05mm-1 mm.

By adopting the technical scheme, the strength of the monofilament is ensured by virtue of the combination hole with the diameter of 0.05mm-1 mm.

Preferably: the diameter of the monofilament is 0.1mm-1 mm.

By adopting the technical scheme, the single wires with the diameters of 0.1mm-1mm are used, so that the convenience of stirring the concrete fibers and the concrete is improved, the dispersity of the concrete fibers in a cement matrix is improved, and the tensile strength and the toughness of a cement aggregate are improved.

Preferably: the monofilaments are polypropylene monofilaments.

By adopting the technical scheme, the anti-aging, anti-wind erosion and acid and alkali resistance of the cement matrix are improved by means of the polypropylene monofilaments.

Preferably: and a plurality of polypropylene monofilaments are twisted to form a polypropylene coarse fiber body.

By adopting the technical scheme, the polypropylene coarse fiber body formed by twisting the plurality of polypropylene monofilaments is helpful for improving the strength of the concrete fiber.

Preferably: the polypropylene coarse fiber bodies are arranged in a wavy manner.

Through adopting above-mentioned technical scheme, with the help of the polypropylene coarse fibre body that is the wave setting, help improving the area of contact of polypropylene coarse fibre body and cement base member, and then help improving the cohesiveness between polypropylene coarse fibre body and the cement base member.

Preferably: the polypropylene coarse fiber body is bifurcated at two ends in the length direction and is provided with a branch end.

By adopting the technical scheme, the bonding stability of the polypropylene coarse fibers and the cement matrix is improved by virtue of the two branch ends.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) the combination holes formed on the outer surface of the monofilaments are beneficial to improving the biting force between the monofilaments and the cement matrix, and further beneficial to improving the cohesiveness between the concrete fibers and the cement matrix;

(2) the polypropylene coarse fiber bodies which are arranged in a wavy manner and formed on the outer surfaces of the monofilaments are beneficial to improving the contact area between the concrete fibers and the cement matrix, so that the cohesiveness between the concrete fibers and the cement matrix is improved.

Drawings

FIG. 1 is a schematic view of the present embodiment mainly showing the overall structure of polypropylene monofilament;

fig. 2 is a schematic diagram mainly showing the overall structure of the polypropylene coarse fiber in this embodiment.

Reference numerals: 1. a monofilament; 2. a coupling hole; 3. a communicating hole; 4. a polypropylene coarse fiber body; 41. a branch end.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a porous concrete fiber.

Example 1

Referring to fig. 1, the concrete fiber includes a monofilament 1, and the monofilament 1 has a diameter of 0.5 mm. The monofilament 1 is a polypropylene monofilament 1, a plurality of combining holes 2 are formed on the outer surface of the polypropylene monofilament 1, and the combining holes 2 are formed on the outer surface of the polypropylene monofilament 1. A communication hole 3 is communicated between any two combination holes 2. The diameters of the combination hole 2 and the communication hole 3 are both 0.1 mm. When the concrete curing agent is used, workers uniformly mix the polypropylene monofilaments 1 with concrete, the concrete enters the combination holes 2 and the communication holes 3 in the mixing process, and when the concrete is cured, the combination holes 2 and the communication holes 3 are tightly bonded with the cement, so that the improvement of the bonding property of concrete coarse fibers and a cement matrix is facilitated.

The implementation principle of the embodiment 1 is as follows: when the concrete is solidified, the combination holes 2 and the communication holes 3 are tightly bonded with the cement matrix, so that the bonding property of the polypropylene monofilaments 1 and the cement matrix is improved.

Example 2

Referring to fig. 2, the present embodiment is different from embodiment 1 in that four polypropylene monofilaments 1 are twisted to form a polypropylene coarse fiber body 4, the polypropylene coarse fiber body 4 is arranged in a wavy shape, and both ends of the polypropylene coarse fiber body 4 in the length direction are branched and form branch ends 41. When the concrete condenses, the polypropylene coarse fiber body 4 that is the wavy setting has increased the area of contact of polypropylene coarse fiber body 4 with the cement base member, and the branch fork end 41 at 4 length direction both ends of polypropylene coarse fiber body is fixed in the cement base member to it is more stable to make polypropylene coarse fiber body 4 and cement base member bond.

The implementation principle of the embodiment 2 is as follows: during the use, the staff is with polypropylene coarse fibre body 4 and concrete misce bene, in the mixing process, the concrete gets into in combination hole 2 and the intercommunicating pore 3, when the concrete solidifies, the polypropylene coarse fibre body 4 that is wavy setting has increased the area of contact of polypropylene coarse fibre body 4 with the cement base member, combination hole 2 and intercommunicating pore 3 two are inseparable with the cement base member bonding, and the branch fork end 41 at 4 length direction both ends of polypropylene coarse fibre body is fixed in the cement base member, thereby make the polypropylene coarse fibre body 4 more stable with the cement base member bonding.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The porous concrete fiber is characterized by comprising a monofilament (1), wherein a plurality of combining holes (2) are formed in the outer surface of the monofilament (1), and the combining holes (2) are formed in the outer surface of the monofilament (1).

2. A porous concrete fibre according to claim 1, characterised in that a communication hole (3) is connected between any two of said bonding holes (2).

3. A porous concrete fibre according to claim 1, characterised in that any of said bonding pores (2) has a diameter of 0.05mm to 1 mm.

4. A cellular type concrete fibre according to claim 1, characterised in that said monofilaments (1) have a diameter of 0.1mm to 1 mm.

5. A cellular type concrete fibre according to claim 1, characterised in that said monofilaments (1) are polypropylene monofilaments (1).

6. A cellular type concrete fibre according to claim 5, characterised in that a plurality of said polypropylene monofilaments (1) are twisted to form a polypropylene coarse fibre body (4).

7. Porous concrete fibre according to claim 6, characterised in that said polypropylene coarse fibre bodies (4) are arranged in a wave-like manner.

8. A porous concrete fiber according to claim 6, wherein said polypropylene coarse fiber body (4) is bifurcated at both ends in the longitudinal direction thereof and formed with bifurcated ends (41).