CN212800177U

CN212800177U - Cellular cross-section polypropylene crude fiber

Info

Publication number: CN212800177U
Application number: CN202021705662.6U
Authority: CN
Inventors: 杨程; 王勇忠
Original assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Current assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-03-26
Anticipated expiration: 2030-08-14

Abstract

The utility model relates to a polypropylene coarse fiber of honeycomb cellular type cross-section, it includes the fibre body, honeycomb holes have been seted up on the fibre body, honeycomb holes's length direction is parallel with the length direction of fibre body, honeycomb holes are provided with six at least intervals on the fibre body. This application helps promoting the area of contact between fibre body surface and concrete to the effect of the cohesiveness between reinforcing fibre body and concrete.

Description

Cellular cross-section polypropylene crude fiber

Technical Field

The application relates to the technical field of concrete composite materials, in particular to a polypropylene coarse fiber with a cellular section.

Background

At present, the concrete fiber is a high-performance fiber specially used for concrete, can effectively control microcracks caused by factors such as plastic shrinkage, drying shrinkage and temperature change of the concrete, prevent and inhibit the formation and development of the original cracks of the concrete, greatly improve the anti-cracking and anti-permeability performance and the anti-abrasion performance of the concrete, and increase the toughness of the concrete, thereby prolonging the service life of the concrete.

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

In view of the above-mentioned related art, the inventors considered that there was a defect that the contact area between the outer surface of the fiber and the concrete was not large enough, and the adhesion between the concrete fiber and the concrete was not strong enough.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the contact area between the outer surface of the fiber and concrete is not large enough, so that the adhesion between the concrete fiber and the concrete is not strong enough, the polypropylene coarse fiber with the honeycomb hole type section is provided.

The polypropylene coarse fiber with the cellular section adopts the following technical scheme:

the polypropylene coarse fiber with the honeycomb hole type cross section comprises a fiber body, wherein honeycomb holes are formed in the fiber body, the length direction of each honeycomb hole is parallel to the length direction of the fiber body, and at least six honeycomb holes are formed in the fiber body at intervals.

Through adopting above-mentioned technical scheme, in the application, the staff stirs fibre body and concrete together, and the concrete is through honeycomb holes and the abundant contact of fibre body on the fibre body, helps promoting the area of contact between fibre body surface and concrete to the cohesiveness between reinforcing fibre body and concrete.

Preferably, the cross section of the fiber body is provided in a polygon shape.

Through adopting above-mentioned technical scheme, through setting up the fibre body into the polygon, help promoting the intensity of fibre body.

Preferably, fins are provided on the peripheral side of the fiber body.

Through adopting above-mentioned technical scheme, by fin and concrete full contact, help promoting the fastness that fibre body and concrete contacted.

Preferably, the cross section of any one of the honeycomb holes is provided with a polygon.

Through adopting above-mentioned technical scheme, set up to the polygon through the cross section with honeycomb holes, help saving the material of fibre body on the one hand, on the other hand helps promoting the intensity of fibre body.

Preferably, the length of the fiber body is 0.5-50mm, and the diameter of the circumcircle is 0.1-1.0 mm.

By adopting the technical scheme, the strength of the fiber body is improved by virtue of the fiber body with the length of 0.5-50mm and the diameter of the circumscribed circle of 0.1-1.0 mm.

Preferably, the cross section of any one of the honeycomb holes is provided in a circular shape.

Through adopting above-mentioned technical scheme, through setting up honeycomb holes into circularly, help promoting honeycomb holes and concrete area of contact.

Preferably, the end of any one of the honeycomb holes is provided with a guide surface.

By adopting the technical scheme, the guide surface guides the concrete, which is helpful for preventing the surface tension of the end surface of the honeycomb hole from obstructing the concrete from flowing into the honeycomb hole.

Preferably, the fiber body is provided with a drainage hole, and the axis of the drainage hole is perpendicular to the central line of the fiber body.

Through adopting above-mentioned technical scheme, carry out the drainage by the drainage hole to the concrete, help promoting the contact rate of concrete and honeycomb holes inside wall.

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

1. the honeycomb holes are formed in the fiber body, so that the contact area between the surface of the fiber body and concrete is favorably increased, and the bonding property between the fiber body and the concrete is enhanced;

2. the fiber body and the honeycomb holes are both polygonal, so that the strength of the fiber body is improved;

3. through the setting of guide face and drainage hole, help promoting the speed that concrete and honeycomb holes inside wall contacted.

Drawings

FIG. 1 is a schematic view showing the overall structure of a polypropylene crude fiber mainly embodying a honeycomb-hole type cross section according to an embodiment;

FIG. 2 is a schematic diagram of the overall structure of polypropylene coarse fibers mainly embodying a honeycomb-hole type cross section in the second embodiment.

Reference numerals: 1. a fiber body; 11. honeycomb holes; 111. a guide surface; 12. a fin; 13. and (4) drainage holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a polypropylene crude fiber with a honeycomb hole type section.

Example 1

Referring to fig. 1, the polypropylene coarse fiber with a honeycomb-type cross section comprises a fiber body 1, wherein the length of the fiber body 1 is 5.0mm, and the diameter of a circumscribed circle is 1.0 mm. The cross section of fibre body 1 is the polygon, and the week side of fibre body 1 is fixed with fin 12 at even interval, and the one end of arbitrary fin 12 all with fibre body 1 fixed connection, and the other end of arbitrary fin 12 extends to the one side of keeping away from fibre body 1. Seted up honeycomb holes 11 on fibre body 1, honeycomb holes 11 evenly spaced apart on fibre body 1 is equipped with seven, and the length direction that sets up direction and fibre body 1 of arbitrary honeycomb holes 11 is parallel and honeycomb holes 11 run through fibre body 1 both ends, and arbitrary honeycomb holes 11's cross section all sets up to the hexagon.

The implementation principle of the embodiment 1 is as follows: in the application, the staff is 5mm with length, and circumscribed circle diameter is 1.0 mm's polygon fiber body 1 and concrete and stirs together, then in the concrete flowed into fiber body 1 from honeycomb holes 11, fin 12 and honeycomb holes 11 fully contacted with fiber body 1.

Example 2

Referring to fig. 2, the cross section of a cellular polypropylene coarse fiber includes any one of the cellular holes 11 is circular, and guide surfaces 111 are provided at both ends of the fiber body 1 of any one of the cellular holes 11. Evenly spaced apart on the horizontal plane of fibre body 1 and 1 axis vertically of fibre body is equipped with drainage hole 13, and drainage hole 13 is provided with a plurality ofly around 1 central line interval of fibre body, and the axis of arbitrary drainage hole 13 all is perpendicular with the central line of fibre body 1, and the drainage hole 13 on the horizontal plane has seted up seven along the even interval of length direction of fibre body 1.

The implementation principle of the embodiment 2 is as follows: in operation, the worker mixes the fiber body 1 with the concrete sufficiently, and the concrete flows into the fiber body 1 through the guide surface 111 and the drainage hole 13 to be in sufficient contact with the fiber body 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cellular cross-section polypropylene crude fiber, which is characterized in that: including fibre body (1), honeycomb holes (11) have been seted up on fibre body (1), the length direction of honeycomb holes (11) is parallel with the length direction of fibre body (1), honeycomb holes (11) are provided with six at least the interval on fibre body (1).

2. The cellular cross-section polypropylene crude fiber according to claim 1, wherein: the cross section of the fiber body (1) is polygonal.

3. The cellular cross-section polypropylene crude fiber according to claim 2, wherein: fins (12) are arranged on the periphery of the fiber body (1).

4. The cellular cross-section polypropylene crude fiber according to claim 1, wherein: the cross section of any honeycomb hole (11) is provided with a polygon.

5. The cellular cross-section polypropylene crude fiber according to claim 1, wherein: the length of the fiber body (1) is 0.5-50mm, and the diameter of the circumscribed circle is 0.1-1.0 mm.

6. The cellular cross-section polypropylene crude fiber according to claim 1, wherein: the cross section of any honeycomb hole (11) is round.

7. The cellular cross-section polypropylene crude fiber according to claim 6, wherein: the end of any one of the honeycomb holes (11) is provided with a guide surface (111).

8. The cellular cross-section polypropylene crude fiber according to claim 6, wherein: the fiber body (1) is provided with drainage holes (13), and the axes of the drainage holes (13) are perpendicular to the central line of the fiber body (1).