KR100950717B1 - Maintenance Method of Concrete Layer of Expansion Joint and Bridge Shoe - Google Patents

Maintenance Method of Concrete Layer of Expansion Joint and Bridge Shoe Download PDF

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KR100950717B1
KR100950717B1 KR1020090061467A KR20090061467A KR100950717B1 KR 100950717 B1 KR100950717 B1 KR 100950717B1 KR 1020090061467 A KR1020090061467 A KR 1020090061467A KR 20090061467 A KR20090061467 A KR 20090061467A KR 100950717 B1 KR100950717 B1 KR 100950717B1
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South Korea
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concrete
expansion joint
weight
cement
concrete layer
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KR1020090061467A
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Korean (ko)
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KR20090083313A (en
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전봉희
장용진
최정호
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웅진엔지니어링(주)
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5079Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated

Abstract

본 발명은 신축이음장치 및 교량받침부의 콘크리트층의 보수 방법에 관한 것으로, 보다 상세하게는 신축이음장치 및 교량받침부의 콘크리트층를 보수할 때에, 균열 저감 섬유(화이버)보강재와 속경재를 혼합한 콘크리트를 투입하여 내구성과 내마모성을 보강하는 신축이음장치 및 교량받침부의 콘크리트층의 보수 방법에 관한 것이다.The present invention relates to a method for repairing a concrete layer of a expansion joint and a bridge support. More specifically, when repairing a concrete layer of a expansion joint and a bridge support, concrete mixed with a crack reducing fiber (fiber) reinforcement and a fast hard material is used. The present invention relates to a method of repairing a concrete layer of a expansion joint and a bridge support part that reinforces durability and wear resistance by adding a.

본 발명은, 신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법에 있어서,The present invention, in the method for repairing the concrete layer of the expansion joint device and the bridge support portion,

신축이음장치 또는 교량 받침부의 파손된 콘크리트층을 제거하는 단계; 시멘트와 섬유재질의 화이버와 속경재를 혼합한 콘크리트를 상기 제거된 부분에 타설하는 단계; 상기 혼합한 콘크리트를 양생하는 단계를 포함하는 것을 특징으로 한다.Removing the damaged concrete layer of the expansion joint or the bridge support; Placing concrete in which cement and fiber fibers and hardwood materials are mixed in the removed portion; It characterized in that it comprises the step of curing the mixed concrete.

이상과 같이 파손된 신축이음장치의 후타부나 교량받침부의 콘트리트층을 제거하고, 균열 저감 화이버와 속경재를 혼합한 본 발명의 콘크리트로 조성물을 투입하여 파손된 후타부를 보수를 한다면, 보수 시공성이 간편해지고, 이 파이버가 콘크리트와 견고하게 결합되어 균열 저감 효과가 탁월하게 된다. As described above, if the concrete layer of the foot portion or the bridge support portion of the damaged expansion joint device is removed and the composition is put into the concrete of the present invention in which the crack reduction fiber and the fast solid material are mixed to repair the broken portion, the repairability is easy. This fiber is firmly bonded to the concrete, and the crack reduction effect is excellent.

신축이음장치, 교량받침, 후타부, 섬유보강재, 콘크리트, 속경재 Expansion joint, bridge bearing, futabu, fiber reinforcement, concrete, hardwood

Description

신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법{Maintenance Method of Concrete Layer of Expansion Joint and Bridge Shoe} Maintenance method of Concrete Layer of Expansion Joint and Bridge Shoe}

본 발명은 신축이음장치 및 교량받침부의 콘크리트층의 보수 방법에 관한 것으로, 보다 상세하게는 신축이음장치 및 교량받침부의 콘크리트층를 보수할 때에, 균열 저감 섬유(화이버) 보강재와 속경재를 혼합한 콘크리트를 투입하여 내구성과 내마모성을 보강하는 신축이음장치 및 교량받침부의 콘크리트층의 보수 방법에 관한 것이다.The present invention relates to a method for repairing a concrete layer of a expansion joint and a bridge support. More specifically, when repairing a concrete layer of a expansion joint and a bridge support, concrete mixed with a crack reducing fiber (fiber) reinforcement and a fast hard material is used. The present invention relates to a method of repairing a concrete layer of a expansion joint and a bridge support part that reinforces durability and wear resistance by adding a.

신축이음장치나 교량받침은 도1과 같은 교량이나 고가도로 등에 설치되어 있고 강철 재질이며, 신축이음장치나 교량 받침은 교량이나 고가도로에서 상부구조물 신축거동의 완충 및 이동 작용을 하는 가장 중요한 부분이고, 신축이음장치나 교량받침의 콘크리트층이 손상되거나 파손되는 경우에는 교량이나 고가도로에 치명적인 위험을 초래한다.
따라서, 도2에서와 같은 신축이음장치(1)의 후타부(2)나 교량받침을 고정하는 하부 주변의 콘크리트 층은 강도가 높고 변형이 적은 콘크리트를 사용하여 설치하고, 보수시에는 초속경 몰탈과 자갈, 모래를 혼합하고 일정 높이만큼 철근(보강)없이 콘크리트로 타설한다.
그러나, 예를들어 신축이음장치의 후타부의 경우에, 이렇게 무철근(무보강) 콘크리트를 사용하여 보수하는 하면, 무철근 콘크리트층이 경화와 건조에 따라 큰 수축이 발생하고 도3의 상부 도면과 같이 차량이 통과함에 따라 후타부(2)의 콘크리트는 쉽게 파손되어 갈라지게 되어 이러한 현상이 심화되면 콘크리트층이 파손되어 파손된 콘크리트 조각이 도로 위로 돌아다니게 되고, 마침내는 후타부(2)가 움푹 파이게 되어 통과 차량에 위험을 초래하게 되므로, 수시로 점검을 하여 필요시에 보수를 해야 한다.
이러한 문제점을 해결하기 위하여, 종래기술의 신축이음장치의 후타부의 보수방법에서는 도3의 하부에서와 같이 콘크리트층이 철거된 후타부(2)에, 와이어메쉬(3)를 설치한 후에 그 위에 콘크리트(4)를 투입하여 이 콘크리트층의 표면을 평탄화하여 건조하는 방법을 사용한다.
그러나, 이 방법에서는 차량이 통과함에 따라 와이어메쉬(3)의 처짐 현상이 발생하고, 이 와이어메쉬(3) 바로 위의 콘크리트층(4)은 균열 방지용 보강재가 없기 때문에 차량이 통과함에 따라 여전히 콘크리트층(4)의 균열이 발생하게 되고, 와이어메쉬(3)의 부식 방지를 위한 관리가 필요하며, 설치 공간에 맞게 와이어메쉬(3)를 절단하여 설치해야 하므로, 시공시 불편하고 보수시 소요시간이 많이 걸린다.
Expansion joints or bridge supports are installed on the bridge or overpass as shown in FIG. 1 and are made of steel, and expansion joints or bridge supports are the most important parts for buffering and moving the superstructure stretching behavior in the bridge or overpass. Damaged or broken concrete layers of joints or bridge supports pose a fatal hazard to bridges and overpasses.
Therefore, the concrete layer around the lower part fixing the rear part 2 or the bridge support of the expansion joint device 1 as shown in FIG. 2 is installed using high strength and low deformation concrete, and supersonic mortar for repairing Mix gravel, sand and pour concrete without reinforcement to a certain height.
However, in the case of the futa part of the expansion joint, for example, when repairing using reinforcement-free (reinforced) concrete, the reinforcement-free concrete layer undergoes large shrinkage due to hardening and drying, and the upper drawing of FIG. Likewise, as the vehicle passes, the concrete of the futa part 2 is easily broken and cracked. When this phenomenon is intensified, the concrete layer is damaged and the broken pieces of concrete move around the road, and finally the futa part 2 is pitted. This will cause a danger to the passing vehicle, and should be checked frequently and repaired as necessary.
In order to solve this problem, in the repair method of the rear part of the expansion joint of the prior art, after installing the wire mesh (3) on the rear part (2) where the concrete layer is removed, as shown in the lower part of Figure 3, the concrete thereon (4) is added and the method of flattening and drying the surface of this concrete layer is used.
However, in this method, the deflection of the wire mesh 3 occurs as the vehicle passes, and the concrete layer 4 directly above the wire mesh 3 does not have a crack preventing reinforcement, so the concrete still passes as the vehicle passes. Cracks in the layer 4 occur, management is required to prevent corrosion of the wire mesh 3, and the wire mesh 3 must be cut and installed in accordance with the installation space. This takes a lot.

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본 발명은 이상과 같은 종래기술의 문제점을 감안하여, 내구성과 내마모성을 보강하고 편리하고 단시간 내에 신축이음장치부나 교량받침부의 콘크리트층을 보수 가능하게 하는 보수방법을 제공한다.The present invention, in view of the problems of the prior art as described above, provides a repair method that reinforces durability and wear resistance, and makes it possible to repair the concrete layer of the expansion joint portion or the bridge support portion in a convenient and short time.

이상과 같은 기술적 과제를 달성하기 위하여 본 발명은, 신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법에 있어서,
신축이음장치 또는 교량 받침부의 파손된 콘크리트층을 제거하는 단계; 시멘트와 섬유재질의 화이버 보강재와 속경재를 혼합한 콘크리트를 상기 제거된 부분에 타설하는 단계; 상기 혼합한 콘크리트를 양생하는 단계를 포함하는 것을 특징으로 한다.
In order to achieve the above technical problem, the present invention, in the method for repairing the concrete layer of the expansion joint device and the bridge support portion,
Removing the damaged concrete layer of the expansion joint or the bridge support; Placing concrete in which the fiber reinforcement material and the cement hard material of cement and fiber material are mixed in the removed portion; It characterized in that it comprises the step of curing the mixed concrete.

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이상과 같이 파손된 신축이음장치의 후타부나 교량받침의 콘트리트층을 제거하고, 균열 저감 화이버 보강재와 속경재를 혼합한 본 발명의 콘크리트로 조성물을 투입하여 파손된 후타부를 보수를 한다면, 보수 시공성이 간편해지고, 이 화이버 보강재가 콘크리트와 견고하게 결합되며, 이렇게 내구성 및 내마모성이 향상된 콘크리트는 빈번하게 반복되는 보수 주기를 최대한 연장시켜 공사 중 교통차단에 따른 불편 및 경제적 손실을 최소화 할 수 있다.As described above, if the concrete layer of the foot portion or the bridge support of the damaged expansion joint device is removed, and the composition is put into the concrete of the present invention mixed with the crack reducing fiber reinforcement material and the fast solid material to repair the broken foot portion, Simpler, this fiber reinforcement is firmly combined with concrete, and this improved durability and wear-resistant concrete can extend the frequent recurring repair cycles as much as possible to minimize inconvenience and economic loss due to traffic blocking during construction.

먼저, 본 발명의 콘크리트에 혼합하여 사용 가능한 콘크리트 섬유보강재에 대해 설명하기로 한다.
예를들어, 폴리비닐알콜(PVA, Poly Vinyl Alcohol)섬유(화이버) 보강재는 종래의 섬유 보강재에 비해 콘크리트와 몰탈 속에서 혼련성 분산 성능이 우수하고, 보강성능이 우수하며, 시멘트 메트릭스와의 접착성이 높고, 내알카리성, 내구성, 인장강도 및 인장 탄성 등이 뛰어난 특성을 가진 콘크리트/몰탈의 보강용 섬유이다.
즉, PVA 화이 보강재는 스틸 화이버에 필적하는 높은 인장강도, 인장 탄성율을 갖고 있으며, 섬유자체에 OH-기를 함유하고 있는 친수성이기 때문에 시멘트 경화시에 높은 접착력을 가지므로, 몰탈/콘크리트의 수축 응력을 분산시켜 균열 제어에 유효하게 작용한다.
또한, PVA 화이버 보강재는 뛰어난 내알카리성, 내후성 및 내약품성을 가지며, 연소시에 다이옥신과 암모니아 등의 유해물질의 발생이 없는 친환경적인 물질이다.
이제, 본 발명의 후타부 보수에 사용하기 위하여, 이러한 PVA 파이버와 같은 섬유 보강제를 혼합한 콘크리트 조성물의 바람직한 실시예에 대해 설명하기로 한다.
본 발명의 보수 방법에 사용되는 콘트리트 조성물은, 포틀랜드 시멘트, 미립자 시멘트, 미분말 시멘트, 마이크로 시멘트, 혼합시멘트, 알루미나 시멘트 중의 적어도 하나에서 선택된 시멘트 10-20 중량%, 칼슘설퍼알루미네이트, 쇼듐 알루미네이트, 칼슘 알루미네이트 중의 적어도 하나에서 선택된 속경재 15-30 중량%, 알킬 옥시드, 에테르형 비온계 중의 적어도 하나에서 선택 되어진 수축 저감재 5-13 중량%, 내마모재인 칼슘 실리케이트 하이드라이트 8-12 중량%, 나프타렌, 멜라민, 리그닌, 폴리카르본산계 중의 적어도 하나에서 선택 되어진 유동화제 0.1-2.0 중량%, EVA, SRB, PVA 중의 적어도 하나에서 선택 되어진 폴리머 0.02-1.5 중량%, 촉진제 0.01-1.1 중량%, 발수제 0.03-0.8 중량%, 지연제 0.04-1.1 중량%, 소포제 0.05-5.0 중량%, 나이론, PP, PVA 파이버 중의 적어도 하나에서 선택된 섬유보강재 0.1-4.0 중량%, 규사 SiO2 40-60 중량%를 포함한다. 물론 상기의 조성 비율 및 조성물은 각 조성물의 특성 및 타설 장소의 특성을 고려하여 조정될 수 있다.
종래기술에서 사용하는 일반 무근콘크리트 또는 와이어메쉬가 적용된 경우와 대비하여, 본 발명의 섬유보강재가 적용된 콘크리트 조성물이 어떤 특성을 가지는지를 비교하는 비교표가 도4에 도시하였다.
이 도4에서 알수 있는 바와 같이, 본 발명의 섬유보강재가 적용된 콘크리트 조성물은 균열도 적고, 휨강도 및 인장강도도 우수하며, 시공이 편리하고 저렴하다는 것을 알 수 있다.
이제 본 발명의 콘크리트 조성물을 이용하여 신축이음장치의 후타부를 보수하는 방법에 대해 도5를 참고로 하여 설명하기로 한다.
먼저 파손된 후타부(2)의 기존 콘크리트층을 커터와 브레이커를 이용하여 제거하여 본 발명의 콘크리트 조성물을 설치하기 위한 단면을 확보한다.
그리고 나서 콘크리트 유입방지 테이프(5)로 신축이음장치를 감싸고, 후타부(2)의 양측 부분(6)을 비닐로 덮고 나서, 균열 저감 화이버 보강재와 초속경재를 포함하는 본 발명의 콘크리트 조성물을 혼합하여 이 공간에 투입하면서 바이브레이터(7)를 이용하여 콘크리트 조성물이 골고루 분포하도록 한 후에, 양생 과정을 수행한다.
이상과 같은 과정을 마치면 신축이음부 보수가 완료된다.
이렇게 하면, 작업자는 기존의 와이어매쉬 설치시의 와이어매쉬의 절단 등의 공정을 거치지 않고서, 간단하게 본 발명의 콘크리트 조성물을 파손된 후타부에 투입하여 평탄화 및 건조 과정을 거치게 되므로 보수 공정이 아주 간단하게 된다.
이때에, 도6에서와 같이, 후타부의 하부는 섬유보강재가 적게 포함된 본 발명의 콘크리트 조성물로 1차 타설하고, 상부(노면 부분)는 하부에 비해 섬유보강재가 2-4배가 함유된 본 발명의 콘크리트 조성물로 2차 타설하는 것도 가능하다.
즉, 차량과 직접 접촉하여 차량 하중이 많이 가해지는 상부에는 섬유보강재를 많이 함유한 콘크리트 조성물을 사용하여 하부에 비하여 균열 저감, 내구성 및 내마모성을 높게 하는 것도 가능하다.
이상과 같이, 섬유보강재가 사용된 콘크리트로 신축이음장치의 후타부를 보수를 하면, 도7에서와 같이 차량이 지속적으로 통과하더라도 콘크리트 조성물에 포함된 섬유보강재가 시멘트와 단단하게 결합, 보강 밀도가 높게 되어 있어서 균열이 발생하지 않기 때문에 획기적인 균열 저감 효과를 달성하게 된다.
한편, 이상에서는 신축이음장치의 후타부를 예를들어 설명하였으나, 교량받침 하부의 주변 콘크리트층의 보수에서도 동일한 방법을 적용가능하다.
First, it will be described with respect to the concrete fiber reinforcement can be mixed and used in the concrete of the present invention.
For example, polyvinyl alcohol (PVA) fiber (fiber) reinforcement has better kneading and dispersing performance in concrete and mortar than conventional fiber reinforcement, and has excellent reinforcing performance and adhesion to cement matrix. It is a reinforcing fiber for concrete / mortar that has high properties, excellent alkali resistance, durability, tensile strength and tensile elasticity.
In other words, PVA fiber reinforcement has high tensile strength and tensile modulus comparable to that of steel fiber, and has high adhesive strength during cement hardening because of its hydrophilicity containing OH- group in the fiber itself, thus reducing the shrinkage stress of mortar / concrete. Dispersion is effective for crack control.
In addition, PVA fiber reinforcement has excellent alkali resistance, weather resistance and chemical resistance, and is an environmentally friendly material that does not generate harmful substances such as dioxins and ammonia during combustion.
Now, a preferred embodiment of a concrete composition in which fiber reinforcing agents such as PVA fibers are mixed for use in the futabu repair of the present invention will be described.
The concrete composition used in the repairing method of the present invention is 10-20% by weight of cement selected from at least one of portland cement, particulate cement, fine powder cement, micro cement, mixed cement, alumina cement, calcium sulfoaluminate, sodium aluminate, 15-30% by weight fastener selected from at least one of calcium aluminate, 5-13% by weight of shrinkage reducing material selected from at least one of alkyl oxide, ether type nonionic, 8-12 weight of calcium silicate hydrite which is abrasion resistant %, 0.1-2.0 wt% of a fluidizing agent selected from at least one of naphtharene, melamine, lignin, polycarboxylic acid, 0.02-1.5 wt% of a polymer selected from at least one of EVA, SRB, PVA, 0.01-1.1 wt. %, Water repellent 0.03-0.8 wt%, retardant 0.04-1.1 wt%, antifoam 0.05-5.0 wt%, at least one of nylon, PP, PVA fiber And a fiber reinforcement selected 0.1-4.0% by weight, SiO 2 40-60% by weight of silica sand. Of course, the above composition ratio and composition can be adjusted in consideration of the properties of each composition and the properties of the place of pouring.
Compared to the case where ordinary plain concrete or wire mesh used in the prior art is applied, a comparison table comparing the characteristics of the concrete composition to which the fiber reinforcement of the present invention is applied is shown in FIG. 4.
As can be seen in Figure 4, the concrete composition to which the fiber reinforcement of the present invention is applied, it can be seen that there is little crack, excellent bending strength and tensile strength, and construction is convenient and inexpensive.
Now, a method of repairing the futa part of the expansion joint using the concrete composition of the present invention will be described with reference to FIG.
First, the existing concrete layer of the broken rear part 2 is removed by using a cutter and a breaker to secure a cross section for installing the concrete composition of the present invention.
Then, the expansion joint is wrapped with concrete inflow preventing tape (5), and both sides (6) of the rear part (2) are covered with vinyl, and then the concrete composition of the present invention including the crack reducing fiber reinforcement and the super hard wood is mixed. After the concrete composition is evenly distributed using the vibrator 7 while being put into this space, a curing process is performed.
After completing the above process, the expansion joint repair is completed.
In this way, the operator simply puts the concrete composition of the present invention into the damaged futa part without undergoing a process such as cutting the wire mesh at the time of installing the existing wire mesh, so that the repair process is very simple. Done.
At this time, as shown in Figure 6, the lower part of the rear part is primarily cast with the concrete composition of the present invention containing less fiber reinforcement, the upper portion (surface portion) of the present invention containing 2-4 times the fiber reinforcement than the lower portion It is also possible to pour secondary with concrete composition.
That is, it is possible to increase the crack reduction, durability and wear resistance compared to the lower portion by using a concrete composition containing a lot of fiber reinforcement in the upper portion in direct contact with the vehicle is a lot of vehicle load.
As described above, when the futa part of the expansion joint is repaired with the concrete using the fiber reinforcement, even if the vehicle continues to pass as shown in FIG. 7, the fiber reinforcement contained in the concrete composition is firmly bonded to the cement and has a high reinforcement density. Since no cracking occurs, a breakthrough effect for reducing cracking is achieved.
On the other hand, the above described the futa part of the expansion joint device, for example, the same method can be applied to the repair of the surrounding concrete layer under the bridge support.

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도 1은 신축이음장치와 교량받침이 설치된 교량의 부분을 도시함
도 2는 신축이음장치와 후타부를 도시함.
도3은 종래기술에서 무근콘크리트 사용하는 경우와 와이어메쉬를 사용하는 경우의 후타부의 균열을 도시함.
도4는 종래기술에서 사용하는 무철근(무보강)콘크리트, 와이어메쉬 포함 콘크리트, 본 발명의 섬유 보강재 사용 콘크리트의 특성을 비교함.
도5는 본 발명에 따라 신축이음장치의 후타부를 보수하는 방법을 도시함.
도6은 본 발명에서 섬유 보강재의 함유율이 다른 콘크리트로 1, 2차에 걸쳐 타성하는 경우를 도시함.
도7은 본 발명의 섬유 보강재 함유 콘크리트를 사용하는 경우에 후타부의 균열을 도시함.
1 shows a part of a bridge in which the expansion joint and the bridge support are installed
Figure 2 shows the expansion joint and the futabu.
Figure 3 shows the crack of the rear part in the case of using plain concrete and wire mesh in the prior art.
Figure 4 compares the characteristics of the concrete without reinforcing (reinforced) concrete, wire mesh-containing concrete, fiber reinforcement using the present invention used in the prior art.
Figure 5 shows a method for repairing the rear part of the expansion joint according to the present invention.
Figure 6 shows the case of inertia over the first and second concrete with different content of fiber reinforcement in the present invention.
Fig. 7 shows cracks in the rear part when using the fiber reinforcement-containing concrete of the present invention.

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Claims (7)

신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법에 있어서,In the method of repairing the concrete layer of the expansion joint and the bridge support, 신축이음장치 또는 교량 받침부의 파손된 콘크리트층을 제거하는 단계;Removing the damaged concrete layer of the expansion joint or the bridge support; 콘크리트 조성물을 상기 제거된 부분에 타설하는 단계;Pouring concrete composition to the removed portion; 상기 혼합한 콘크리트 조성물을 양생하는 단계를 포함하고,Curing the mixed concrete composition, 상기 콘트리트 조성물은,The concrete composition, 포틀랜드 시멘트, 미립자 시멘트, 미분말 시멘트, 마이크로 시멘트, 혼합시멘트, 알루미나 시멘트 중의 적어도 하나에서 선택된 시멘트 10-20 중량%; 칼슘설퍼알루미네이트, 쇼듐 알루미네이트, 칼슘 알루미네이트 중의 적어도 하나에서 선택된 속경재 15-30 중량%; 알킬 옥시드, 에테르형 비온계 중의 적어도 하나에서 선택 되어진 수축 저감재 5-13 중량%; 내마모재인 칼슘 실리케이트 하이드라이트 8-12 중량%; 나프타렌, 멜라민, 리그닌, 폴리카르본산계 중의 적어도 하나에서 선택 되어진 유동화제 0.1-2.0 중량%; EVA, SRB, PVA 중의 적어도 하나에서 선택 되어진 폴리머 0.02-1.5 중량%; 촉진제 0.01-1.1 중량%; 발수제 0.03-0.8 중량%; 지연제 0.04-1.1 중량%; 소포제 0.05-5.0 중량%; 나이론, PP, PVA 파이버 중의 적어도 하나에서 선택 되어진 섬유보강재 0.1-4.0 중량%; 규사 SiO2 40-60 중량%를 포함하고,10-20% by weight cement selected from at least one of portland cement, particulate cement, fine powder cement, micro cement, mixed cement, alumina cement; 15-30% by weight of a hardwood material selected from at least one of calcium sulfur aluminate, sodium aluminate and calcium aluminate; 5-13 wt% of a shrink reducing material selected from at least one of alkyl oxides and ether type nonionics; 8-12% by weight of abrasion resistant calcium silicate hydrate; 0.1-2.0% by weight of a fluidizing agent selected from at least one of naphthalene, melamine, lignin, and polycarboxylic acid; 0.02-1.5% by weight of a polymer selected from at least one of EVA, SRB, PVA; 0.01-1.1 weight percent accelerator; 0.03-0.8% by weight of water repellent; 0.04-1.1 weight percent of retardant; Antifoaming agent 0.05-5.0 wt%; 0.1-4.0 wt% of fiber reinforcement selected from at least one of nylon, PP, and PVA fibers; 40 to 60% by weight of silica sand SiO 2 , 상기 타설하는 단계는 하부를 위한 1차 타설과 상부를 위한 2차 타설로 구성되고, 2차 타설시에는 1차 타설시에 비해 상기 섬유 보강재의 함유율이 큰 혼합 콘크리트를 사용하는 것을 특징으로 하는 신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법.The placing step is composed of a primary pour for the lower portion and a secondary pour for the upper portion, when the second pour is characterized in that the use of mixed concrete having a higher content of the fiber reinforcement than the primary pour How to repair the concrete layer of the joint and bridge support. 삭제delete 제1항에 있어서,The method of claim 1, 상기 2차 타설시의 섬유 보강재의 함유율은 1차 타설시의 함유율의 2-4배인 것을 특징으로 하는 신축이음장치 및 교량 받침부의 콘크리트층을 보수하는 방법.The content of the fiber reinforcement at the time of secondary casting is 2 to 4 times the content of the primary pouring, the method of repairing the concrete layer of the expansion joint and the bridge support. 삭제delete 삭제delete 삭제delete 삭제delete
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101701067B1 (en) * 2015-12-21 2017-02-01 한서대학교 산학협력단 Expansion joint structure for tunnel
KR102127329B1 (en) * 2020-02-27 2020-06-26 이해영 High speed hardening concrete composition
KR102279023B1 (en) 2020-12-15 2021-07-19 (주)엔텍 Graphene mortar for concrete maintenance, paint of preventing neutralization and maintenance method of concrete

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101995861B1 (en) 2018-12-05 2019-07-04 주식회사 리얼테크 An expansion joint
KR102209681B1 (en) 2019-05-22 2021-01-29 주식회사 리얼테크 An expansion joint

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100699451B1 (en) 2005-03-11 2007-03-26 (주)에이엠에스 엔지니어링 Paving method of bridge having the excellent waterproofing performance and fatigue resistance
KR100770389B1 (en) * 2007-04-11 2007-10-26 (주)피엔알시스템 Composite of fire-resisting mortar with ultra high ductility, and a combined methods of fire-proof coating and repair using its material
KR100807761B1 (en) * 2007-04-27 2008-02-28 주식회사 콘크리닉 Cement composition using alpha type calcined gypsum and constructing method thereof
KR100868673B1 (en) 2008-07-21 2008-11-13 에이엠에스서비스(주) High speed hardening compound using for mending concrete structure and thin stratum mending method using the compound

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100699451B1 (en) 2005-03-11 2007-03-26 (주)에이엠에스 엔지니어링 Paving method of bridge having the excellent waterproofing performance and fatigue resistance
KR100770389B1 (en) * 2007-04-11 2007-10-26 (주)피엔알시스템 Composite of fire-resisting mortar with ultra high ductility, and a combined methods of fire-proof coating and repair using its material
KR100807761B1 (en) * 2007-04-27 2008-02-28 주식회사 콘크리닉 Cement composition using alpha type calcined gypsum and constructing method thereof
KR100868673B1 (en) 2008-07-21 2008-11-13 에이엠에스서비스(주) High speed hardening compound using for mending concrete structure and thin stratum mending method using the compound

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101701067B1 (en) * 2015-12-21 2017-02-01 한서대학교 산학협력단 Expansion joint structure for tunnel
KR102127329B1 (en) * 2020-02-27 2020-06-26 이해영 High speed hardening concrete composition
KR102279023B1 (en) 2020-12-15 2021-07-19 (주)엔텍 Graphene mortar for concrete maintenance, paint of preventing neutralization and maintenance method of concrete

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