KR20000018103A - The reinforcement bar to restrain shrinkage and crack of concrete - Google Patents

The reinforcement bar to restrain shrinkage and crack of concrete Download PDF

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Publication number
KR20000018103A
KR20000018103A KR1020000001317A KR20000001317A KR20000018103A KR 20000018103 A KR20000018103 A KR 20000018103A KR 1020000001317 A KR1020000001317 A KR 1020000001317A KR 20000001317 A KR20000001317 A KR 20000001317A KR 20000018103 A KR20000018103 A KR 20000018103A
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South Korea
Prior art keywords
concrete
reinforcing material
reinforcement
crack
ring
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KR1020000001317A
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Korean (ko)
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이방지
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이상혁
주식회사 대안산업
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Priority to KR1020000001317A priority Critical patent/KR20000018103A/en
Publication of KR20000018103A publication Critical patent/KR20000018103A/en

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    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • 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
    • C04B16/12—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 characterised by the shape, e.g. perforated strips
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

PURPOSE: A reinforcing material for inhibiting a contraction crack of concrete to make the concrete structure of high strength is provided which improves stabilization of strength of concrete itself. CONSTITUTION: A reinforcing material(2) for inhibiting a contraction crack of concrete comprises a body(3), which is a ring in shape and forms a binding part bound by a knot on one side. Thus, the reinforcing material(2) is cut to a fixed length and wound round, its both ends are bound by the knot to form the ring in shape. Preferably the body(3) consists of 3-5 strands of polypropylene fiber. The binding part is joined in one body by fusion. The ring-shaped reinforcing material(2) improves stabilization of strength of concrete itself because the ring-shaped body(3) opposes the contraction crack of concrete when curing.

Description

콘크리트의 수축 균열 억제용 보강재{THE REINFORCEMENT BAR TO RESTRAIN SHRINKAGE AND CRACK OF CONCRETE}Reinforcement for preventing shrinkage cracking of concrete {THE REINFORCEMENT BAR TO RESTRAIN SHRINKAGE AND CRACK OF CONCRETE}

본 발명은 콘크리트 구조물의 축조시 콘크리트 고유의 결함인 수축 균열을 억제하고, 강도가 높은 콘크리트 구조물을 만들어 주기위해 콘크리트내에 투입되는 콘크리트의 수축 균열 억제용 보강재에 관한 것이다.The present invention relates to a reinforcing material for suppressing shrinkage cracks, which are inherent defects in the construction of concrete structures, to suppress shrinkage cracks of concrete introduced into concrete to make concrete structures with high strength.

일반적으로 콘크리트에 사용되는 보강재는 도 3 에서 도시한 바와같이 폴리프로필렌화이버(Polypropylene Fiber)로 이루어지며, 소정의 길이로 절단되어 있다.In general, the reinforcing material used in concrete is made of polypropylene fiber (Polypropylene Fiber), as shown in Figure 3 is cut to a predetermined length.

또한, 외관상으로는 마치 실과 같이 매우 가늘게 구성되어 있으나 이를 펼쳐보면 마치 그물망 형상으로 되어 있으며(일명 "매쉬타입"이라 함), 콘크리트층의 내부에 매설되어 콘크리트(1)의 보강재(2) 역할을 하는데 다음과 같은 문제가 있었다.In addition, it looks very thin like a thread, but when unfolded, it looks like a mesh shape (aka "mesh type"), and is embedded inside the concrete layer to serve as a reinforcement material (2) of the concrete (1). I had the following problem.

즉, 보강재(2)가 매우 부드럽고 가늘게 구성되어 있슴에 따라 콘크리트(1)에 넣어 혼합할때 서로 엉켜붙는 문제와, 콘크리트(1)의 고른 강도유지가 어렵고, 보강재(2)가 혼합된 콘크리트(1)를 레미콘 차량에 적재후 작업장소에서 펌핑을 하게 되는데 이때 역시 보강재(2)가 서로 엉켜 펌핑에 저해요인을 주었던 것이다.That is, since the reinforcement (2) is very soft and thin, it is difficult to entangle each other when mixed in the concrete (1), it is difficult to maintain the even strength of the concrete (1), concrete mixed with the reinforcement (2) After loading 1) into ready-mixed concrete vehicle, pumping is done at the work place. In this case, the reinforcement material (2) is entangled with each other, which impedes the pumping.

그리고 건축물의 구축 후 콘크리트(1)가 양생함에 따라 수축 균열이 발생하게 되는데 이때 보강재(2) 자체가 마치 실형상으로 되어 있으므로 균열에 적절히 대응하지 못했던 것이다.In addition, shrinkage cracking occurs as the concrete 1 cures after the construction of the building. At this time, the reinforcing material 2 itself is as if it is a real shape, and thus it did not properly respond to the cracking.

본 출원인은 강도를 높이고 수축 균열의 억제를 위하여 국내특허 제194834호(명칭: 콘크리트의 수축 균열 억제용 보강재)로 제안하여 등록된 바 있다.The present applicant has been registered and proposed in the domestic patent No. 194834 (name: reinforcing material for inhibiting shrinkage cracking of concrete) in order to increase the strength and suppress the shrinkage cracking.

본 출원인에 의해 제안된 상기 특허 제194834호의 보강재는 도 4에서 도시한 바와 같은데 몸체(3)는 PP재로서 복수의 가닥(3-5가닥)으로 하고, 몸체(3)의 양끝부분에 몸체(3) 보다 큰 직경의 팁(4)을 형성하여서 된 것이다.The reinforcement of the patent No. 194834 proposed by the applicant is as shown in Figure 4, the body (3) is made of a plurality of strands (3-5 strands) as a PP material, the body (at both ends of the body (3) 3) by forming a tip 4 of larger diameter.

한편, 상기한 보강재(2)는 콘크리트(1)에 혼합되어 양생될 때 몸체(3)의 양끝부에 몸체(3) 보다 큰 직경으로 된 팁(4)이 형성되어 있으므로 균열발생시 양팁(4)이 콘크리트(1)층에 파묻혀 저항하고 있으므로 균열이 억제되는 이점이 있었던 것이다.On the other hand, the reinforcing material (2) is mixed with the concrete (1) when both ends of the body (3) when the tip (4) having a larger diameter than the body 3 is formed on both ends (4) when cracking occurs There was an advantage that the crack was suppressed because it was buried and resisted in the concrete (1) layer.

하지만 상기한 보강재(2)는 " － "자형으로 되어 있으므로 콘크리트(1)에 고르게 분포되지 못하고 한곳에 집중되는 문제가 따랐다.However, since the reinforcing material 2 has a "-" shape, the reinforcing material 2 is not evenly distributed in the concrete 1, but a problem is concentrated in one place.

본 발명은 콘크리트의 강도를 보다 향상시키고 동시에 콘크리트의 균열을 보다 억제시키며 가능한 보강재가 콘크리트층에 고루 분포되어 콘크리트의 안정화와강성이 향상될 수 있도록 한 보강재를 제공하고자 한 것으로 그 구성 및 작용효과를 첨부된 도면을 토대로 하여 설명한다.The present invention is to provide a reinforcement to improve the strength of the concrete and at the same time to further suppress the cracks of the concrete and to improve the stabilization and stiffness of the concrete by possible distribution of possible reinforcement in the concrete layer. It demonstrates based on an accompanying drawing.

도 1 은 본 발명의 보강재를 나타낸 확대사시도1 is an enlarged perspective view showing a reinforcing material of the present invention

도 2 는 본 발명의 보강재가 콘크리트층에 투입된 상태의 확대단면도Figure 2 is an enlarged cross-sectional view of the reinforcement of the present invention is put into the concrete layer

도 3 은 종래 보강재를 나타낸 것으로, 보강재가 콘크리트층에 투입된 상태의 확대단면도Figure 3 shows a conventional reinforcement, an enlarged cross-sectional view of the state in which the reinforcement is put into the concrete layer

도 4 는 종래 보강재의 다른 예를 나타낸 것으로 보강재가 콘크리트층에 투입된 상태의 확대단면도Figure 4 is an enlarged cross-sectional view showing a conventional example of the reinforcement is a state in which the reinforcement is put into the concrete layer

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 콘크리트 2 : 보강재1: concrete 2: reinforcement

3 : 보강재의 몸체 4 : 결속부3: body of reinforcing material 4: binding part

도 1 은 본 발명의 보강재를 나타낸 확대사시도이고, 도 2 는 본 발명의 보강재가 콘크리트층에 투입된 상태의 확대단면도로서, 이하 종래구조와 동일한 부분에 대하여는 편의상 동일부호를 붙여 설명한다.1 is an enlarged perspective view showing a reinforcing material of the present invention, Figure 2 is an enlarged cross-sectional view of the state in which the reinforcing material of the present invention is put into the concrete layer, the same parts as in the conventional structure will be described with the same reference numerals for convenience.

보강재(2)의 몸체(3)는 링형상으로 구성하고 일측에 결속부(4)가 형성되며, 상기한 결속부(4)는 매듭식으로 결속된다. 즉, 상기한 보강재(2)는 마치 실형상으로 소정의 길이로 절단한 후 이를 둥글게 말아 양측끝부를 매듭식으로 결속하므로서 링형상이 유지되는 것이며, 몸체(3)는 PP재로서 3∼5가닥이 적합하다. 이때 몸체(3)의 각 가닥들은 칫솔의 모(毛 )와 같이 다소 딱딱한 상태가 된다.The body 3 of the reinforcing material 2 is formed in a ring shape and a binding portion 4 is formed at one side, and the binding portion 4 is tied in a knot type. That is, the reinforcing material (2) is cut in a thread shape to a predetermined length, and then rolled it roundly to bind both ends at the knot, so that the ring shape is maintained, and the body (3) is 3 to 5 strands as a PP material. This is suitable. At this time, each of the strands of the body 3 is in a somewhat hard state, such as the hair of the toothbrush.

한편, 상기한 매듭식의 결속부(4)는 마치 한줄로 된 몸체(3)의 양측 끝부분을 서로 합쳐 손으로 묶는 것과 같은 형식이 바람직하며, 또한 필요에 따라 열융착에 의해 몸체(3) 양측끝부를 접합하면 되는 것으로 어느 형식을 취하더라도 상관 없으며 결속부(4)는 몸체(3)의 직경보다 큰 직경으로 되는 것이 바람직스럽다.On the other hand, the knot-type binding portion 4 is preferably a type such as joining the two ends of the one-line body (3) together by hand and tied together by hand, and the body (3) by heat fusion as necessary What is necessary is just to join both ends, and it is preferable that the binding part 4 is set to the diameter larger than the diameter of the body 3.

이와같이 된 본 발명의 보강재(2)는 구조가 극히 간단하지만 본 발명 보강재(2)가 콘크리트(1)에 투입되었을때는 도 2에서 도시한 바와같이 큰크리트(1)가 몸체(3)의 두께(직경)만큼 그리고 몸체(3)의 면적만큼 몸체(3) 내부에 충진되어 있는 상태가 되므로, 즉 콘크리트(1)가 링형으로 된 보강재(1)내에 충진된 상태에 있게 되므로 예로써 콘크리트(1)가 양생시 수축에 의한 균열이 생길때 PP재로 된 경질의 보강재(2)가 균열에 대하여 대응하기 때문에 균열이 최소화되는 것이다.The reinforcement 2 of the present invention thus obtained is extremely simple in structure, but when the reinforcement 2 of the present invention is introduced into the concrete 1, the large concrete 1 has the thickness of the body 3 as shown in FIG. Diameter) and the area of the body 3 to be filled inside the body 3, that is, the concrete 1 is filled in the ring-shaped reinforcement 1, for example, concrete 1 When the crack occurs due to shrinkage during curing, the crack is minimized because the hard stiffener 2 made of PP corresponds to the crack.

다시 말해서 보강재(2)의 링형상으로 된 몸체(3) 내부에 콘크리트(1)가 끼워져 있는 상태가 되므로 콘크리트(1)의 균열시 보강재(2)가 콘크리트(1) 자체를 벌어지지 않도록 꼭 붙들고 있는 상태가 되어 균열억제를 보다 확실히 할 수 있으며 이와같은 연유에 의하여 콘크리트(1) 자체의 강도가 향상되는 것이다.In other words, the concrete (1) is inserted into the ring-shaped body (3) of the reinforcement (2), so when the concrete (1) cracks, the reinforcement (2) is held firmly so as not to open the concrete (1) itself. The cracks can be more reliably suppressed and the strength of the concrete 1 itself is improved by such condensed milk.

이상 살펴본 바와같이 본 발명의 링형상으로 된 보강재는 종래의 단순히 일자("－"자)형으로 된 보강재 및 몸체가 "－"자형으로 되고 양 끝부에 몸체보다 큰 직경의 팁을 구성시킨 보강재에 비하여 균열억제력이 크게 향상되는 것이며, 동시에 보강재가 링형으로 구성되어 있으므로 콘크리트 혼합시 고르게 혼합 분포되므로 콘크리트 자체의 안정화와 강도향상을 가져올 수 있는 것이다.As described above, the ring-shaped reinforcement of the present invention is a conventional reinforcement of a simple straight ("-") shape and the body is a "-"-shaped reinforcement formed a tip of larger diameter than the body at both ends Compared with this, cracking resistance is greatly improved, and at the same time, since the reinforcement is composed of a ring shape, the concrete is evenly distributed and mixed, which may lead to stabilization and strength improvement of the concrete itself.

Claims (2)

PP재로 구성된 보강재(2)에 있어서, 상기한 보강재(2)의 몸체(3)는 링형상으로 구성하되 결속부(4)에 의해 결속되며, 상기 결속부(4)는 매듭식으로 결속되어 있는 것을 특징으로 하는 콘크리트의 수축 균열 억제용 보강재.In the reinforcing material 2 composed of a PP material, the body 3 of the reinforcing material 2 is formed in a ring shape and is bound by a binding part 4, and the binding part 4 is knotted. Stiffener for suppressing shrinkage cracking of concrete. 제 1 항에 있어서,The method of claim 1, 결속부(4)는 열융착에 의해 일체화로 접합된 것을 특징으로 하는 콘크리트의 수축 균열 억제용 보강재.Bonding portion (4) is a reinforcement for shrinkage crack suppression of concrete, characterized in that the joint is joined by heat fusion.
KR1020000001317A 2000-01-12 2000-01-12 The reinforcement bar to restrain shrinkage and crack of concrete KR20000018103A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030047069A (en) * 2001-12-07 2003-06-18 한천구 Method of producing for spalling resistance of high performance concrete and high performance concrete using that method
WO2019101072A1 (en) * 2017-11-21 2019-05-31 临沂大学 Rubber-plastic concrete and preparation method therefor
CN113653289A (en) * 2021-10-21 2021-11-16 上海建工五建集团有限公司 Floor anti-cracking method based on concrete shrinkage theory

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030047069A (en) * 2001-12-07 2003-06-18 한천구 Method of producing for spalling resistance of high performance concrete and high performance concrete using that method
WO2019101072A1 (en) * 2017-11-21 2019-05-31 临沂大学 Rubber-plastic concrete and preparation method therefor
CN113653289A (en) * 2021-10-21 2021-11-16 上海建工五建集团有限公司 Floor anti-cracking method based on concrete shrinkage theory

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