KR101728231B1 - Manufacturing Method of Steel Fiber Reinforced Mortar Composites And its Production Member - Google Patents

Manufacturing Method of Steel Fiber Reinforced Mortar Composites And its Production Member Download PDF

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Publication number
KR101728231B1
KR101728231B1 KR1020150121229A KR20150121229A KR101728231B1 KR 101728231 B1 KR101728231 B1 KR 101728231B1 KR 1020150121229 A KR1020150121229 A KR 1020150121229A KR 20150121229 A KR20150121229 A KR 20150121229A KR 101728231 B1 KR101728231 B1 KR 101728231B1
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KR
South Korea
Prior art keywords
steel fiber
mortar
composite
fiber reinforced
steel
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KR1020150121229A
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Korean (ko)
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KR20170025189A (en
Inventor
김강수
이득행
최승호
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서울시립대학교 산학협력단
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Priority to KR1020150121229A priority Critical patent/KR101728231B1/en
Publication of KR20170025189A publication Critical patent/KR20170025189A/en
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Publication of KR101728231B1 publication Critical patent/KR101728231B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
    • B28C5/402—Methods
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous

Abstract

A method for manufacturing a steel fiber reinforced composite having a three-dimensional uniform distribution probability that allows the steel fiber of the present invention to have an even distribution probability without aggregation upon mixing into a concrete so as to produce a spherical steel fiber reinforced composite in which the steel fiber is mixed with mortar, ≪ / RTI >
A preferred embodiment of the present invention comprises the steps of: (a) fabricating a bundle of steel fiber bundles by combining a plurality of steel fibers facing each other; (b) inserting the steel fiber assembly into a sphere mold and injecting the mortar into the mold; (c) completing the spherical composite by removing the form after mortar curing.

Description

Technical Field [0001] The present invention relates to a method of manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability,

The present invention relates to a method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability and a composite made therefrom. More particularly, the present invention relates to a method for producing a steel fiber reinforced composite having a spherical shape mixed with a mortar, The present invention relates to a method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability and a composite made therefrom.

The steel fiber reinforced mortar is reinforced by improving the strength and crack resistance by incorporating an appropriate amount of steel fiber in the compounding process in order to supplement ordinary concrete having a disadvantage that cracks easily occur and brittle fracture characteristics are exhibited in the action of tensile or flexural load And energy absorption capacity.

However, when the steel fiber reinforced mortar is mixed with the concrete, the steel fiber is not appropriately dispersed in the concrete due to the shape of the steel fiber. Therefore, when the concrete is laid as shown in FIG. 3, And the distribution shape of the steel fiber 31 is also discontinuous, and the effect of increasing the strength is limited.

As a background of the present invention, there is a patent registration No. 0620866 entitled " A fiber-reinforced cement composite and a method for manufacturing the same "(Patent Document 1). A method of manufacturing a steel fiber reinforced cement composite according to the above background, wherein 100 to 130 parts by weight of sand having a particle size of 5 mm or less based on 100 parts by weight of cement, 10 to 30 parts by weight of reactive powder, 10 to 30 parts by weight of filler, And 0.05 to 1 part by weight of a thickener for reducing the aggregation of fibers; and a step of mixing the mortar with a mixture of 90% by weight to 99.5% by weight of water and 0.5% by weight to 10% by weight of a water reducing agent Mixing the compounding water and the mortar so that the ratio of the binder (cement and reactive powder) is 0.25 or less; mixing a mixture of the compounding water and the mortar with a steel fiber having a diameter of 0.2 mm and a length of 12 mm, A steel fiber filling step of mixing 2 volume% of a steel fiber having a diameter of 0.35 mm to 0.5 mm and a length of 30 mm with respect to the mixture, Wet curing is carried out for 1 to 3 days for the compounding water and the mortar mixture into which the steel fiber has been introduced and then curing is carried out by performing steam curing at a temperature of 60 to 110 DEG C for 2 to 4 days Reinforced cement composite according to the present invention.

However, the background art is a method in which a steel fiber is mixed with a premixed mortar material preliminarily mixed with cement, sand or the like, which is difficult to incorporate into a steel fiber during mixing, as in the case of conventional steel fiber reinforced mortar, There was a problem.

Patent No. 0620866 "Steel fiber reinforced cement composite and method for manufacturing the same"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide a steel fiber reinforced composite having a spherical shape so as to have uniform distribution probability without aggregation upon mixing into concrete, And a method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability that can realize economical efficiency while controlling cracks, solving the difficulty of mixing steel fibers into concrete, and enabling uniform distribution of steel fibers, The purpose is to provide.

The present invention provides a method of manufacturing a steel fiber aggregate, comprising the steps of: (a) fabricating a steel fiber aggregate by combining a plurality of steel fibers facing each other; (b) inserting the steel fiber assembly into a sphere mold and injecting the mortar into the mold; and (c) removing the form after the mortar curing to complete a spherical composite. The present invention also provides a method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability.

Also, in the step (a), the steel fiber group aggregate is formed by inserting and joining the steel fiber into the sphere-shaped adhesive balls so that the steel fibers are oriented in different directions, respectively, to provide a method for manufacturing a steel fiber reinforced mortar composite having a three- I want to.

Also, in the step (a), it is desired to provide a method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability, characterized in that the adhesive ball is made of any one of mortar, rubber and soft synthetic resin.

Also, it is intended to provide a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability produced by the above method.

The method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability of the present invention and the composite prepared therefrom can form a spherical steel fiber reinforced composite so as to have a uniform distribution probability without aggregation upon mixing into concrete, It is possible to realize a high tensile strength, ductility and crack control, and economical efficiency at the time of incorporation into the concrete, to solve the difficulty of mixing steel fiber into concrete, and to enable uniform distribution of steel fiber.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a manufacturing method of a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability according to the present invention in the order of manufacturing.
FIG. 2 is a perspective view illustrating an embodiment of a concrete beam incorporating a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability of the present invention. FIG.
FIG. 3 is a perspective view showing an embodiment of a beam constructed by a conventional steel fiber reinforced concrete. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a manufacturing method of a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability according to the present invention in the order of manufacturing.

In the method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability of the present invention, as shown in FIG. 1A, a steel fiber aggregate 10 is manufactured (a).

The steel fiber assembly 10 is manufactured by assembling a plurality of steel fibers 11 such that the plurality of steel fibers 11 are directed in different directions.

At this time, the length and shape of the steel fiber 11 may be variously formed, and the length and shape of each of the plurality of steel fibers 11 may be differently formed.

The steel fibers 11 may be formed by superposing the steel fibers 11 so that the respective steel fibers 11 are directed in different directions and then joining the center portions with an adhesive to bond the steel fibers 11 to each other. A separate adhesive ball 12 may be formed at the center and the end of the steel fiber 11 may be inserted into the adhesive ball 12 so as to face in different directions.

The adhesive ball 12 may be made spherical and dispersed in various directions when the steel fiber 11 is inserted.

In addition, the material of the adhesive ball 12 may be various materials that can be inserted into the steel fiber 11, and in particular, it may be made of any one of spherical mortar, rubber, and soft synthetic resin.

The mortar is inserted into the steel fiber assembly (10) by inserting the steel fiber (11) in a state that the mortar is not completely solidified, and the rubber and the soft synthetic resin are inserted and formed by applying pressure to the steel fiber (11).

Then, as shown in FIG. 1B, the steel fiber aggregate 10 is inserted into the spherical mold 20 and the mortar 30 is injected into the mold 20 (b).

The mortar is injected into the hole 21 of the mold 20 after the steel fiber assembly 10 is inserted into the hole 21 so that the mortise 20 is formed in the hole 21 do.

Finally, as shown in FIG. 1C, the mold 20 is removed after the curing of the mortar 30 to complete the spherical composite 1 (c).

As described above, the composite 1 of the present invention has a spherical shape in which a plurality of steel fibers 11 are dispersed therein. Therefore, when the composite 1 is mixed into the concrete, aggregation does not occur in the concrete, , It is economical at the same time as it controls high tensile strength, ductility and cracking.

FIG. 2 is a perspective view illustrating an embodiment of a concrete beam incorporating a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability of the present invention. FIG.

The steel fiber reinforced mortar composite (1) having the three-dimensional uniform distribution probability of the present invention is manufactured by the above method and has a spherical shape as shown in FIG. 1C. Therefore, as shown in FIG. 2, Even when concrete (1) is mixed with concrete (1), it is possible to uniformly distribute the distribution of the steel fiber evenly, so that the strength distribution and cracks It is possible to effectively improve the mechanical characteristics such as the improvement of the resistance ability and the energy absorption ability.

However, as shown in FIG. 3, in the conventional case, when the beam 3 is installed by pouring concrete, the steel fibers 31 are not appropriately dispersed in the concrete so that it is difficult to mix the concrete into the concrete. This appears as a discontinuity.

The method for manufacturing a steel fiber reinforced mortar composite having the three-dimensional uniform distribution probability of the present invention and the composite prepared from the same have the same probability of forming a spherical steel fiber reinforced composite, Therefore, it is possible to realize a high tensile strength, ductility and crack control and economic efficiency when mixed in concrete, and it is very useful to solve the difficulty of mixing steel fiber into concrete and enable uniform distribution of steel fiber.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

1: Steel fiber reinforced mortar composite
10: steel fiber group aggregate
11: Steel fiber
12: Adhesive ball
20: Form
30: Mortar

Claims (4)

(a) assembling a steel fiber bundle (10) by bonding a plurality of steel fibers (11) to a spherical bonding ball (12) so as to face each other;
(b) inserting the steel fiber assembly 10 into a sphere 20 and injecting the mortar 30 into the sphere 20;
(c) removing the mold (20) after the curing of the mortar (30) to complete the spherical composite (1) to be mixed at the time of concrete mixing. A method for producing a mortar composite. delete The method according to claim 1,
In step (a)
A method for manufacturing a steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability, characterized in that the adhesive ball (12) is made of any one of mortar, rubber and soft synthetic resin. A steel fiber reinforced mortar composite having a three-dimensional uniform distribution probability produced by the method of claim 1 or claim 3.
KR1020150121229A 2015-08-27 2015-08-27 Manufacturing Method of Steel Fiber Reinforced Mortar Composites And its Production Member KR101728231B1 (en)

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KR1020150121229A KR101728231B1 (en) 2015-08-27 2015-08-27 Manufacturing Method of Steel Fiber Reinforced Mortar Composites And its Production Member

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KR101728231B1 true KR101728231B1 (en) 2017-04-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003246662A (en) * 2002-02-26 2003-09-02 Toray Ind Inc Agent for strengthening adhesion of concrete and method of constructing wall strengthened in adhesion to mortar
KR100772622B1 (en) * 2007-05-02 2007-11-02 고삼석 Mortar ball composition and method for repairing the chipped portion of concrete structures using the same
KR101253056B1 (en) * 2011-11-16 2013-04-10 한국건설기술연구원 Reinforced concrete structure having multiple cylinder type steel fiber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100620866B1 (en) 2004-02-16 2006-09-13 한국건설기술연구원 Steel fiber reinforced cementitious composites and manufacturing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003246662A (en) * 2002-02-26 2003-09-02 Toray Ind Inc Agent for strengthening adhesion of concrete and method of constructing wall strengthened in adhesion to mortar
KR100772622B1 (en) * 2007-05-02 2007-11-02 고삼석 Mortar ball composition and method for repairing the chipped portion of concrete structures using the same
KR101253056B1 (en) * 2011-11-16 2013-04-10 한국건설기술연구원 Reinforced concrete structure having multiple cylinder type steel fiber

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