CN212687908U

CN212687908U - Polypropylene crude fiber

Info

Publication number: CN212687908U
Application number: CN202021450719.2U
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: 2021-03-12
Anticipated expiration: 2030-07-21

Abstract

The application relates to a polypropylene coarse fiber, it includes the fibre body, the ring form setting is personally submitted in the cross section of fibre body, and one side of fibre body is the disconnection setting and forms the disconnection part, be provided with the arch on the inside wall of fibre body, the arch is provided with three at least. 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

Polypropylene crude fiber

Technical Field

The application relates to the technical field of concrete composite materials, in particular to polypropylene crude fibers.

Background

The concrete fiber is a high-performance fiber specially used for concrete, can effectively control microcracks caused by factors such as plastic shrinkage, dry 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 cohesiveness between the concrete fiber and the concrete is not strong enough, the polypropylene coarse fiber is provided.

The polypropylene crude fiber provided by the application adopts the following technical scheme:

the utility model provides a polypropylene coarse fiber, includes the fibre body, the transversal ring form setting of personally submitting of fibre body, and one side of fibre body is the disconnection setting and forms the disconnection part, be provided with the arch on the inside wall of fibre body, the arch is provided with three at least.

Through adopting above-mentioned technical scheme, in the application, the staff stirs fibre body and concrete together, and the concrete gets into this internal and with protruding contact of fibre through fibre body cyclic annular disconnection department, helps promoting the area of contact between fibre body surface and concrete to the cohesiveness between reinforcing fibre body and concrete.

Preferably, the break-off portion comprises 1/12-1/4 of the circle.

By adopting the technical scheme, the broken parts 1/12-1/4 occupying the circular ring are beneficial to lifting the concrete to be more fully contacted with the protrusions in the circular ring.

Preferably, the protrusion is provided as an arc-shaped protrusion.

Through adopting above-mentioned technical scheme, by arc arch and concrete contact, help promoting the area of contact of fibre body and concrete when saving the cost of manufacture of fibre body.

Preferably, a plurality of the arc-shaped protrusions are arranged at adjacent intervals, and the chord length of each arc-shaped protrusion is 0.5-1.5 times of the radius corresponding to the arc.

Through adopting above-mentioned technical scheme, through setting up the bellied chord length of arc to be 0.5 ~ 1.5 times of the corresponding radius of circular arc, help when material saving, provide bigger area of contact with the concrete will.

Preferably, the arc-shaped protrusions are arranged in a straight line along the axis direction of the fiber body.

Through adopting above-mentioned technical scheme, through setting up the arc arch into the straight line along fibre body axis direction, help promoting the fastness that fibre body and concrete contacted.

Preferably, the fiber body has a length of 0.5 to 50mm and a diameter of 0.1 to 1.0 mm.

By adopting the technical scheme, the fiber body with the length of 0.5-50mm and the diameter of 0.1-1.0mm is beneficial to ensuring the strength of the fiber body.

Preferably, the fiber body is polypropylene coarse fiber.

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

Preferably, the arc-shaped bulges are not adjacently arranged at intervals, and the distance between the circle centers of the arc-shaped bulges is 1.1-3.0 times of the corresponding radius.

Through adopting above-mentioned technical scheme, through setting up a plurality of protruding non-adjacent intervals of arc to set up the bellied centre of a circle distance of arc into the radius that 1.1 ~ 3.0 times correspond, help promoting the cohesiveness of concrete and fibre body.

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

1. the contact area between the surface of the fiber body and concrete is favorably improved by fixing the bulges on the annular disconnected inner side wall of the fiber body, so that the cohesiveness between the fiber body and the concrete is enhanced;

2. the fiber body is made of polypropylene coarse fibers, and the arc-shaped protrusions are arranged in a straight line along the axis direction of the fiber body, so that the use strength of the fiber body is improved;

3. the length of the fiber body is set to be 0.5-50mm, the diameter of the fiber body is 0.1-1.0mm, and the chord length of the arc-shaped protrusion is 0.5-1.5 times of the radius corresponding to the arc, so that the fiber body is guaranteed to be more in contact area while materials are saved.

Drawings

FIG. 1 is a schematic view showing the overall structure of a polypropylene crude fiber which mainly embodies the first embodiment;

FIG. 2 is a schematic view showing the overall structure of a polypropylene crude fiber mainly embodying the second embodiment.

Reference numerals: 1. a fiber body; 11. an inflow port; 2. and an arc-shaped bulge.

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.

Example 1

Referring to fig. 1, a polypropylene coarse fiber, including fiber body 1, fiber body 1 is polypropylene coarse fiber, and polypropylene coarse fiber's cross-section is the ring form setting, and one side of fiber body 1 is the disconnection setting and forms the disconnection portion, is provided with the arch on fiber body 1's the inside wall, and the arch is provided with three on a plane perpendicular with polypropylene coarse fiber axis.

During operation, the polypropylene coarse fibers and concrete are stirred together by a worker during operation, and then the concrete flows into the annular inner part of the polypropylene coarse fibers from the annular disconnected part of the polypropylene coarse fibers to be fully contacted with the protrusions.

Referring to fig. 1, the broken portion occupies 1/4 of the circular ring, and the inflow port 11 is formed at the broken portion. Arbitrary arch all sets up to arc arch 2, and the chord length of arbitrary arc arch 2 is the radial 1.5 times that the circular arc corresponds, and three arc arch 2 is adjacent interval setting, and the length of fibre body 1 is 10mm, and the diameter is 1.0mm, and arc arch 2 on the perpendicular plane of polypropylene coarse fibre axis sets up to the straight line along 1 axis direction of fibre body.

The implementation principle of the embodiment 1 is as follows: in the application, a worker stirs the polypropylene coarse fibers with the length of 10mm and the diameter of 1.0mm together with concrete, then the concrete flows into the polypropylene coarse fibers from the inflow opening 11, and then the concrete is fully contacted with three adjacent arc-shaped protrusions 2 with the chord length of 1.5 times of the radius corresponding to the arc.

Example 2

Referring to fig. 2, the polypropylene crude fiber comprises three arc-shaped protrusions 2 which are arranged on a plane perpendicular to the axis of the polypropylene crude fiber at non-adjacent intervals, and the distance between the circle centers of any arc-shaped protrusion 2 is 3.0 times of the corresponding radius.

The implementation principle of the embodiment 2 is as follows: in the application, the staff stirs polypropylene coarse fiber and concrete together, and the concrete fully contacts with three arc-shaped bulges 2 which are not adjacent and have the circle center distance of 3.0 times of the corresponding radius in the stirring process.

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 polypropylene crude fiber characterized by: including fiber body (1), the transversal ring form setting of personally submitting of fiber body (1), and one side of fiber body (1) is the disconnection setting and forms the disconnection part, be provided with the arch on the inside wall of fiber body (1), the arch is provided with three at least.

2. The crude polypropylene fiber according to claim 1, wherein: the break-off portions occupy 1/12-1/4 of the circle.

3. The crude polypropylene fiber according to claim 1, wherein: the bulges are arc bulges (2).

4. The crude polypropylene fiber according to claim 3, wherein: a plurality of arc arch (2) are adjacent interval setting, arbitrary arc arch (2) chord length is 0.5 ~ 1.5 times of the radius that the circular arc corresponds.

5. The crude polypropylene fiber according to claim 4, wherein: the arc-shaped protrusions (2) are arranged to be straight lines along the axis direction of the fiber body (1).

6. The crude polypropylene fiber according to claim 1, wherein: the length of the fiber body (1) is 0.5-50mm, and the diameter is 0.1-1.0 mm.

7. The crude polypropylene fiber according to claim 1, wherein: the fiber body (1) is polypropylene coarse fiber.

8. The crude polypropylene fiber according to claim 3, wherein: a plurality of arc-shaped bulges (2) are arranged at non-adjacent intervals, and the distance between the circle centers of the arc-shaped bulges (2) is 1.1-3.0 times of the corresponding radius.