KR101931321B1 - High early strength repair materials compositions for concrete bridge deck and repairing method for concrete bridge deck using that - Google Patents
High early strength repair materials compositions for concrete bridge deck and repairing method for concrete bridge deck using that Download PDFInfo
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Abstract
Description
본 발명은 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법에 관한 것으로서, 보다 상세하게는, 짧은 시간 내에 경화되어 보수공정에 소요되는 시간을 단축시킬 수 있고, 일정 온도 이하로 기온이 낮아지는 동절기에도 보수작업을 진행할 수 있으며, 내마모성, 굴곡성 및 내구성이 우수하고, 임계면과 표면 평탄화 작업을 용이하게 행할 수 있는 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법에 관한 것이다.
More particularly, the present invention relates to a method for repairing a bridging top plate using a bridging topsheet repair material composition, and more particularly, The present invention relates to a composition for repairing superficial bridge topsheet which is excellent in abrasion resistance, flexibility and durability and can easily perform surface planarization with a critical plane, and a method for repairing a bridge topsheet using the same.
일반적으로, 아스콘을 포장한 도로는 계절적 온도변화에 따라 반복되는 <2> 수축 팽창, 차량에 의해 가해지는 정하중 및 동하중과 응력의 불균일, 노화 및 지반 침하, 침투수의 동결융해 및 차량 바퀴에 의한 펌핑현상 등 여러 가지 요인에 의해 아스팔트노면의 일부가 부분적으로 갈라지는 균열이나 포털현상이 발생하게 된다.Generally, roads packed with an ascon are subjected to repeated shrinkage expansion due to seasonal temperature changes, static and dynamic load and stress unevenness imposed by the vehicle, aging and subsidence, freezing and thawing of infiltration water, Pumping phenomenon, and the like, a part of the asphalt road surface is partially cracked and a port phenomenon occurs.
이러한 균열, 포탈 및 아스콘 포장층을 통해 빗물 및 제설제 등이 콘크리트 상판면에 침투하게 되면 콘크리트 열화가 발생되고 철근 부식이 발생되어 콘크리트 교량 상판구조물의 내구성이 급격히 떨어지게 됨은 물론 이로 인해 포장층의 손상이 가속되게 되어 결국 차량통행에 지장을 초래할 뿐만 아니라 안전사고를 유발할 우려가 높아지고 있다.If rainwater and snow remover penetrate through the cracks, portal and asbestos packing layers, the concrete will be deteriorated and corrosion of the reinforcing bars will occur, resulting in a drastic decrease in the durability of the concrete bridge roof structure, Is accelerated and eventually it will not only interfere with vehicle traffic but also cause safety accidents.
특히, 교량의 상판에 파손부위가 발생되면, 교량의 특성상 우회도로를 찾기도 쉽지 않아서 그 교통체증이 더욱 심화되므로 차량의 안전하고 원활한 소통과 교량의 내구성 연장을 위해서는 교량의 상판에 발생된 열화단면을 신속하게 보수해야할 필요가 있다.Particularly, when the upper part of the bridge is damaged, it is difficult to find a detour road due to the characteristics of the bridge. Therefore, in order to secure and smooth communication of the vehicle and extension of the durability of the bridge, It is necessary to repair it quickly.
종래의 열화 콘트리트 교량상판의 단면 보수방법은 초속경 시멘트를 이용 단면보수를 하고 그 위에 방수층을 시공한 다음 그 위에 아스콘을 포장하는 방법이 일반적이다.Conventional deterioration concrete bridge tops are generally subjected to surface repair using a quick-setting cement, and a waterproof layer is formed thereon, and then the ascon is packed thereon.
그러나 이러한 보수방법은 우선 시멘트계의 경우 동절기 작업이 불가능하여 긴급을 요하는 작업이 불가능한 문제점과 단면보수 깊이가 얇은 경우(15mm 미만) 수화반응 온도 및 아스콘 포설 온도에 의한 단면보수몰탈 내부의 수분이 증발하게 되어 수분 부족으로 계속적인 수화반응이 충분히 이루어지지 않아 충분한 강도를 발휘하지 못하게 되고 이로 인해 바탕면과의 접착이 완벽하게 이루어지지 않아 쉽게 탈락되는 문제점이 있어 일정 두께이상 시공을 해야 되기 때문에 열화되지 않은 부위까지 팻칭을 해주어야 하므로 시간과 경비의 부담이 늘어나게 된다.However, such a repair method is problematic in that the cement system can not work in the winter because of the impossibility of urgent work, and when the depth of repair of the section is thin (less than 15 mm), moisture inside the section repair mortar due to hydration reaction temperature and ascon- The hydration reaction is not sufficiently carried out due to lack of water. As a result, sufficient strength can not be exerted. As a result, adhesion with the base surface is not completely performed and thus it is easily removed. Patching should be done to an unused area, which will increase the burden of time and expense.
특히 초속경 시멘트계 단면보수재의 경우 3-4시간내에 조기 경화되므로 후 공정인 방수 및 포장을 하기위한 강도(150-200kgf/cm2)는 발현되지만 완전경화 되기까지 수화반응에 필요한 수분을 포함한 첨가수(시멘트/물비:20%)가 단면보수재 내부에 90% 이상이 잔존하게 된다.In particular, the cement-based cross-section repair material is early cured within 3-4 hours, so that the strength (150-200 kgf / cm 2) for subsequent waterproofing and packaging is exhibited, but the addition amount including water required for hydration Cement / water ratio: 20%) will remain in the inside of the cross-section repair material at least 90%.
이 상태에서 시간의 제약 때문에 후속 공정인 방수층 시공과 아스콘포장을 바로 수행해 줌으로서 단면보수재의 계속적인 수화반응시 발생되는 열과 포설 아스콘의 온도(150-170℃)에 의해 초속경 단면보수재 내부의 잔존수가 기화 팽창되게 되고 이 팽창압에 의해 새롭게 시공해준 방수층이 부풀어 오르는 방수층 들뜸현상이 발생되고 이 여파로 아스콘 포장층 또한 들뜸현상이 발생되어 차량 통행에 따른 계속적인 물리적 충격을 받아 이부위의 포장층이 또다시 파손되는 문제점이 발생된다.Because of the time limit in this state, the waterproof layer construction and the ascon packaging are carried out immediately after the subsequent process, so that the heat generated during the continuous hydration reaction of the cross-sectional repair material and the residual temperature inside the fast repair cross- The water is expanded and the waterproof layer which is newly constructed by the expansion pressure is swollen and the waterproof layer is lifted and the asphalt pavement layer is also lifted due to this expansion pressure, A problem is caused that the substrate is again damaged.
상기한 문제점을 해결하기 위해 MMA 공중합수지를 혼합한 단면 보수재가 개발되었으며, 종래기술에 따른 보수재는, 액상의 MMA 공중합수지와 충진재와 경화개시재 및 골재로 구성되어 열화콘크리트 교량상판을 보수하는 단면보수재에서, 충진재는 전체 100중량%에 대하여 탄산칼슘 15~25중량%, 규사 50~60중량%, 그라스비드 8~12중량%, 실리카 10~20중량%, 탈크 4~6중량%로 구성되고, 경화개시재는 디벤조일 퍼옥사이드(dibenzoyl peroxide)로 구성되는 특징이 있습니다.
In order to solve the above problems, a cross-sectional repair material mixed with an MMA copolymer resin has been developed. The repair material according to the prior art is composed of a liquid MMA copolymer resin, a cross-section for repairing a deteriorated concrete bridge roof composed of a filler, In the repair material, the filling material is composed of 15 to 25% by weight of calcium carbonate, 50 to 60% by weight of silica sand, 8 to 12% by weight of glass beads, 10 to 20% by weight of silica, and 4 to 6% by weight of talc, based on 100% , And the curing initiator is composed of dibenzoyl peroxide.
본 발명의 배경기술은 대한민국 등록특허공보 제10-0831087호(2008년 05월 23일 공고, 발명의 명칭 : MMA 공중합수지를 혼합한 단면보수재와 이를 이용하는 열화콘크리트 교량상판 단면보수방법)에 개시되어 있다.The background art of the present invention is disclosed in Korean Patent Registration No. 10-0831087 (published on May 23, 2008, entitled "Cross-Sectional Maintenance Material Mixed with MMA Copolymer Resin and Method for Repairing Degraded Concrete Bridge Overhead Surface Using Cross Section) have.
종래기술에 따른 보수재는, 경화개시제가 보수재에 혼합되는 시점이 명확하기 않기 때문에 보수재 시공 전에 현장에서 경화개시제가 혼합되는 경우에는 경화개시제의 혼합량을 정확하게 조절하여 혼합해야 하므로 경화개시제의 혼합공정이 용이하지 않아 보수재 시공에 소요되는 시간 및 비용을 절감하기 어려운 문제점이 있다.Since the time point at which the curing initiator is mixed into the repair material is not clear when the curing initiator is mixed in the field before the repair material is applied, the curing initiator can be easily mixed It is difficult to reduce the time and cost required for constructing the maintenance material.
또한, 종래기술에 따른 보수재는, 경화개시제의 함유량을 정확히 조절하여 보수재와 혼합하지 못하게 되는 경우에는 보수재의 경화가 작업자의 예상보다 빠르게 진행될 수 있어 보수재를 교량 상판에 고르게 도포하기 어려운 문제점이 있다.In addition, when the content of the curing initiator can not be precisely controlled and mixed with the repair material, the repair material according to the related art can harden the repair material faster than expected by the operator, which makes it difficult to uniformly apply the repair material to the bridge top plate.
또한, 종래기술에 따른 보수재는, 경화개시제의 함유량을 정확히 조절하지 못하여 교량 상판에 보수재를 고르게 도포하기 전에 경화되는 경우에 교량 상판에 요구되는 내마모성, 굴곡성, 내한성 및 내구성을 이루지 못하게 되는 문제점이 있다.In addition, the conventional repair materials fail to control the content of the curing initiator precisely, thereby failing to achieve abrasion resistance, flexibility, cold resistance, and durability required for the bridge top plate when cured before evenly applying the repair material to the bridge top plate .
따라서 이를 개선할 필요성이 요청된다.Therefore, there is a need for improvement.
본 발명은 짧은 시간 내에 경화되어 보수공정에 소요되는 시간을 단축시킬 수 있고, 일정 온도 이하로 기온이 낮아지는 동절기에도 보수작업을 진행할 수 있으며, 내마모성, 굴곡성 및 내구성이 우수하고, 임계면과 표면 평탄화 작업을 용이하게 행할 수 있는 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법을 제공하는데 그 목적이 있다.The present invention can shorten the time required for a repair process by curing within a short time, and can perform a maintenance operation even in the winter season when the temperature is lowered to a certain temperature or less, and is excellent in abrasion resistance, bending property and durability, The present invention is directed to a method for repairing a bridge top plate using the same, and a method for repairing a bridge top plate using the same.
본 발명은, 메타크릴산메틸(Methyl Methacrylate) 구조와 불포화 폴리에스테르 구조를 구비하는 수지상의 MMA폴리머를 포함하는 A부; 및 상기 A부와 혼합되어 보수재를 이루고, 혼합된 후에 설정 시간 내에 경화되도록 세라믹 파우더 형태로 이루어지며, 탄산칼슘, 마이크로 실리카, 고강도 규사6호, 고강도 규사5호, 무기질 증점제 및 경화개시제를 포함하여 이루어지는 B부를 포함하는 것을 특징으로 한다.The present invention relates to an A part comprising a resinous MMA polymer having a methyl methacrylate structure and an unsaturated polyester structure; And a part A which is mixed with the part A to form a repairing material and is formed in the form of a ceramic powder so as to be cured within a set time after mixing and includes calcium carbonate, micro silica, high strength silica No. 6, high strength silica No. 5, an inorganic thickener and a hardening initiator And a part (B).
또한, 본 발명의 상기 A부는, 12~18중량부로 혼합되는 상기 MMA폴리머를 포함하고, 상기 B부는, 32~28중량부로 혼합되는 상기 탄산칼슘, 2~8중량부로 혼합되는 상기 마이크로 실리카, 32~38중량부로 혼합되는 상기 고강도 규사6호, 7~13중량부로 혼합되는 상기 고강도 규사5호, 0.1~0.5중량부로 혼합되는 상기 무기질 증점제 및 0.3~0.9중량부로 혼합되는 경화개시제를 포함하는 것을 특징으로 한다.The part A of the present invention comprises the MMA polymer mixed in 12 to 18 parts by weight, the part B comprises the calcium carbonate mixed in 32 to 28 parts by weight, the microsilica mixed in 2 to 8 parts by weight, The high tenacity silicate No. 5 mixed with 7 to 13 parts by weight of the high strength silicate No. 5 mixed with 38 to 38 parts by weight, the inorganic thickening agent mixed with 0.1 to 0.5 part by weight and the curing initiator mixed with 0.3 to 0.9 part by weight .
또한, 본 발명의 상기 A부는, 무색투명하며, 30~35cps의 점도를 이루어지고, 1.06±0.02의 비중을 갖으며, 44±2중량부의 불휘발분을 갖는 2액형 액상 아크릴 변성 불포화 폴리에스테르 수지로 이루어지는 것을 특징으로 한다.The part A of the present invention is a two-part liquid acrylic-modified unsaturated polyester resin which is colorless and transparent, has a viscosity of 30 to 35 cps, has a specific gravity of 1.06 ± 0.02 and has a nonvolatile content of 44 ± 2 parts by weight .
또한, 본 발명의 상기 무기질 증점제는, 벤토나이트 파우더를 포함하고, 상기 경화개시제는, 과산화망간 또는 과산화벤조일(benzoyl peroxide)을 포함하는 것을 특징으로 한다.In addition, the inorganic thickener of the present invention comprises bentonite powder, and the curing initiator is characterized by comprising manganese peroxide or benzoyl peroxide.
또한, 본 발명은, (a) 교량 상판의 콘크리트 열화부분, 들뜸 부분, 이물질을 제거하고, 건조시키는 단계; (b) 교량 상판에 침투형 강화 프라이머를 도포하는 단계; (c) 교량 상판에 초속경 교량 상판 보수재 조성물을 이루는 A부 및 B부를 혼합하여 보수재를 제조하는 단계; 및 (d) 상기 A부와 상기 B부를 혼합하여 이루어지는 보수재를 교량 상판에 도포하는 단계를 포함하는 것을 특징으로 한다.
Further, the present invention provides a method of manufacturing a bridge, comprising the steps of: (a) removing and drying concrete deteriorated portions, floating portions, and foreign matter of a bridge top plate; (b) applying the penetrating reinforcing primer to the bridge top plate; (c) mixing a part A and a part B constituting a composition for a super fast bridge top board on a bridge top plate to prepare a repair material; And (d) applying a repair material comprising the A part and the B part to a bridge top plate.
본 발명에 따른 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법은, 보수재를 시공 현장에서 혼합되는 A부와 B부로 분류하여 제조하여 이송하고, B부에 정확한 양의 경화개시제가 첨가되어 제조되므로 시공 현장에서 경화개시제를 정밀하게 혼합하여 작업이 생략될 수 있게 되어 교량 상판의 보수작업을 용이하게 행할 수 있게 되고, 보수재 시공에 소요되는 시간 및 비용을 절감할 수 있는 이점이 있다.
The present invention relates to a composition for repairing a superficial bridge top plate and a method for repairing a bridge top plate using the same, wherein the repair material is manufactured by being divided into parts A and B mixed at a construction site and transferred, and precise amount of a curing initiator is added Therefore, the work can be omitted by precisely mixing the curing initiator at the construction site, so that the repair work of the bridge top plate can be easily performed, and the time and cost required for constructing the repair material can be reduced.
도 1은 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 제거단계가 도시된 사진이다.
도 2는 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 청소단계가 도시된 사진이다.
도 3은 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 프라이머 도포단계가 도시된 사진이다.
도 4는 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 보수재 포설단계가 도시된 사진이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a photograph showing removal steps of a repair method using a super fast bridge top plate repair material composition according to an embodiment of the present invention. FIG.
FIG. 2 is a photograph showing cleaning steps of a repair method using a super fast bridge top plate repair material composition according to an embodiment of the present invention.
FIG. 3 is a photograph showing a primer application step of a repair method using a super fast bridge top board repair material composition according to an embodiment of the present invention.
FIG. 4 is a photograph showing a step of installing a repair material in a repair method using a super fast bridge top plate repair material composition according to an embodiment of the present invention.
이하, 첨부된 도면들을 참조하여 본 발명에 따른 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법의 일 실시예를 설명한다.Hereinafter, one embodiment of a quick-change bridging top plate repair material composition and a bridge top plate repair method using the same will be described with reference to the accompanying drawings.
이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.
또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.
그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.
Therefore, definitions of these terms should be made based on the contents throughout this specification.
도 1은 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 제거단계가 도시된 사진이고, 도 2는 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 청소단계가 도시된 사진이고, 도 3은 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 프라이머 도포단계가 도시된 사진이고, 도 4는 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 보수방법의 보수재 포설단계가 도시된 사진이다.FIG. 1 is a photograph showing a removal step of a repair method using a super fast bridge top plate repair material composition according to an embodiment of the present invention. FIG. 2 is a view showing a step of removing a repair using a super fast bridge top plate repair material composition according to an embodiment of the present invention. FIG. 3 is a photograph showing a primer application step of a repair method using a super fast bridging top plate repair material composition according to an embodiment of the present invention. FIG. 4 is a view And a step of installing a repair material in a repair method using a super fast bridge top board repair material composition according to the present invention.
도 1 내지 도 4를 참조하면, 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물은, 메타크릴산메틸(Methyl Methacrylate) 구조와 불포화 폴리에스테르 구조를 구비하는 수지상의 MMA폴리머를 포함하는 A부와, A부와 혼합되어 보수재를 이루고, 혼합된 후에 설정 시간 내에 경화되도록 세라믹 파우더 형태로 이루어지며, 탄산칼슘, 마이크로 실리카, 고강도 규사6호, 고강도 규사5호, 무기질 증점제 및 경화개시제를 포함하여 이루어지는 B부를 포함한다.Referring to FIGS. 1 to 4, the quick-change bridge top plate repair composition according to an embodiment of the present invention includes a resin MMA polymer having a methyl methacrylate structure and an unsaturated polyester structure, And is composed of a ceramic powder such that it is cured within a set time after mixing with calcium carbonate, micro silica, high strength silica 6, high strength silica 5, inorganic thickener and curing initiator And a B part formed by
본 실시예의 A부는, 수지 형태로 이루어지고, B부는, 세라믹 파우더 형태로 이루어지므로 A부와 B부를 각각 별도로 수납하여 교량 상판 보수작업이 진행되는 현장으로 이동한 후에 현장에서 A부와 B부를 혼합하여 보수재를 제조하고, 제조된 보수재를 교량 상판에 도포하여 교량 상판 보수작업을 진행하게 된다.Part A of the present embodiment is made of a resin and part B is formed of a ceramic powder. Therefore, parts A and B are separately stored and moved to a site where the bridge upper part maintenance work is performed. Then, part A and part B are mixed And the repair material is applied to the bridge top plate to carry out maintenance work on the bridge top plate.
이때, 본 실시예의 B부에는 경화개시제가 포함되어 이루어지므로 정밀한 양을 혼합하여 보수재의 경화시간을 조절하는 경화개시제를 현장에서 혼합하지 않고, 공장에서 미리 제조되는 B부에 혼합된 상태로 현장에 제공할 수 있게 된다.Since the curing initiator is included in Part B of this embodiment, the curing initiator for controlling the curing time of the repair material by mixing precise amounts is not mixed in the field, .
따라서 작업자는 경화개시제를 정밀한 양으로 조절하여 혼합시키는 공정을 생략하고, 미리 준비된 A부와 B부를 혼합하여 보수재를 제조할 수 있게 되므로 보수재 도포공정에 소요되는 시간 및 비용을 절감할 수 있게 된다.Therefore, the worker can omit the process of adjusting and mixing the curing initiator with a precise amount, and the repair material can be manufactured by mixing the previously prepared parts A and B, thereby reducing the time and cost required for the repair material application process.
본 실시예의 A부는, 12~18중량부로 혼합되는 상기 MMA폴리머를 포함하고, B부는, 32~28중량부로 혼합되는 탄산칼슘, 2~8중량부로 혼합되는 마이크로 실리카, 32~38중량부로 혼합되는 고강도 규사6호, 7~13중량부로 혼합되는 고강도 규사5호, 0.1~0.5중량부로 혼합되는 무기질 증점제 및 0.3~0.9중량부로 혼합되는 경화개시제를 포함한다.Part A of the present embodiment includes the MMA polymer mixed in 12 to 18 parts by weight and part B is mixed with 32 to 28 parts by weight of calcium carbonate mixed with 2 to 8 parts by weight of microsilica mixed with 32 to 38 parts by weight High strength silica sand No. 6, high strength silica sand No. 5 mixed with 7-13 parts by weight, an inorganic thickener mixed with 0.1-0.5 part by weight, and a curing initiator mixed with 0.3-0.9 part by weight.
MMA(Methyl methy acrylate reactive resin) 반응 수지는 에스테르, 아크릴 또는 메타크릴산에 기초로 한 화합물로써, 이런 화학적 합성물의 특징은 탄소이중결합 집합체(c=c)로 이루어져 있다.Methyl methy acrylate reactive resin (MMA) reaction resin is a compound based on ester, acrylic or methacrylic acid, and the chemical composition is characterized by a carbon double bond aggregate (c = c).
A부의 주요 화학성분은 메틸메타크릴염(MMA)이고, 반응수지의 경화는 제2성분으로 분말 경화개시제(벤질과산화물)를 첨가해서 제조하며, 전체적으로 경화를 달성하기 위해서 일정 비율로 혼합되어야 하는 분말 경화개시제로 구성되는 것이 다른 반응수지와의 차이점이다.The main chemical component of Part A is methyl methacrylate (MMA), and the curing of the reactive resin is prepared by adding a powder curing initiator (benzyl peroxide) as a second component, and a powder to be mixed at a certain ratio And a curing initiator is different from other reaction resins.
본 실시예의 A부는, MMA 수지계를 이용한 콘크리트 상판 보수 몰탈로서, 30분 정도의 짧은 시간 내에 경화가 이루어지고, 교량 상판에 접착되어 불투수성과 염이온 및 각종 유류를 포함한 화학물질에 대한 탁월한 내구성을 가지고 있어 장기간 교량 교면을 보호할 수 있게 된다.Part A of this embodiment is a repair mortar for a concrete upper plate using an MMA resin system and is cured within a short time of about 30 minutes and has an excellent durability against chemicals including impermeability and salt ions and various oils adhered to a bridge top plate And it is possible to protect bridge bridges for a long time.
상기한 바와 같이 A부의 특징에 의해 보수재의 경화 시간이 단축되어 교통 통제에 따른 불편함과 비용을 감소시킬 수 있게 되고, 섭씨-20℃에서도 작업이 가능하여 연중 시공 및 보수작업이 가능하게 된다.As described above, the curing time of the repair material is shortened by the feature of the portion A, thereby making it possible to reduce inconvenience and cost due to traffic control and to work at -20 캜.
또한, A부를 이루는 MMA수지는 분자구조가 치밀하여 내마모성, 굴곡성, 내한성, 내구성이 우수한 보수재를 이루게 되고, 하지 부재의 움직임에 충분히 적응할 수 있는 유연성과, 저온 하에서의 동적 적응성이 우수하며, 흐름성과 작업성이 좋아 임계면 시공과 표면 평탄작업을 용이하게 진행할 수 있게 된다.In addition, the MMA resin constituting part A has a dense molecular structure, which results in a maintenance material having excellent abrasion resistance, bending property, cold resistance and durability. The MMA resin is excellent in flexibility capable of sufficiently adapting to the movement of the lower member and in dynamic adaptability under low temperature, It is possible to easily perform critical plane construction and surface flattening work.
표 1에 기재된 바와 같이 본 실시예의 A부는 다양한 온도 하에서 작업이 가능하며, 짧은 경화시간이 소요되므로 교량 상판 보수작업에 소요되는 시간 및 비용을 절감할 수 있게 된다.As shown in Table 1, part A of the present embodiment can work under various temperatures, and it takes a short curing time, so that it is possible to save time and cost for maintenance work on the bridge top plate.
본 실시예의 A부는, 무색투명하며, 30~35cps의 점도를 이루어지고, 1.06±0.02의 비중을 갖으며, 44±2중량부의 불휘발분을 갖는 2액형 액상 아크릴 변성 불포화 폴리에스테르 수지로 이루어지므로 표 1에 기재된 작업조건을 만족하는 보수재를 이루게 된다.Part A of the present example is made of a two-pack type liquid acrylic-modified unsaturated polyester resin which is colorless and transparent, has a viscosity of 30 to 35 cps, has a specific gravity of 1.06 ± 0.02 and has a nonvolatile content of 44 ± 2 parts by weight, 1 < / RTI >
또한, 무기질 증점제는, 벤토나이트 파우더를 포함하고, 상기 경화개시제는, 과산화망간 또는 과산화벤조일(benzoyl peroxide)을 포함한다.In addition, the inorganic thickener includes bentonite powder, and the curing initiator includes manganese peroxide or benzoyl peroxide.
상기와 같이 구성된 본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물를 이용하는 교량 상판 보수방법을 살펴보면 다음과 같다.Hereinafter, a method of repairing a bridge top plate using the quick-change bridge top plate repair material composition according to an embodiment of the present invention will be described.
본 발명의 일 실시예에 따른 초속경 교량 상판 보수재 조성물을 이용하는 교량 상판 보수방법은, 교량 상판의 콘크리트 열화부분, 들뜸 부분, 이물질을 제거하고, 건조시키는 단계와, 교량 상판에 침투형 강화 프라이머를 도포하는 단계와, 교량 상판에 초속경 교량 상판 보수재 조성물을 이루는 A부 및 B부를 혼합하여 보수재를 제조하는 단계와, A부와 B부를 혼합하여 이루어지는 보수재를 교량 상판에 도포하는 단계를 포함한다.A method for repairing a bridge top plate using a super fast bridge top plate repair material composition according to an embodiment of the present invention includes the steps of removing and dehydrating concrete deteriorated portion, A step of mixing a part A and a part B constituting a super fast bridge top board repair material composition on a bridge top plate to prepare a repair material; and a step of applying a repair material formed by mixing parts A and B to the bridge top board.
본 실시예의 보수재를 도포하기 전에는 콘크리트의 들뜸이 있는 부분을 전동헤머로 파치하고, 연약부분은 와이어브러시로 제거하며, 이물질 및 부착물은 와이어브러시 및 에어펌프로 제거한다.Prior to application of the repair material of this embodiment, the portion of the concrete where the lifting of the concrete is pierced with an electric hammer, the soft portion is removed with a wire brush, and the foreign matters and the attachment are removed with a wire brush and an air pump.
전동헤머 및 에어치핑기를 사용하는 경우에는 치핑으로 인해 구체의 추가 손상이 없는 규격으로 기기를 선택해야 하며, 콘크리트 표면의 열화부분을 완전히 제거한 후에 압축공기나 진공흡입기를 사용하여 교량 표면 위에 남아 있는 이물질을 완전히 제거한다.In case of using electric hammer and air chipping machine, it is necessary to select the equipment without any additional damage due to chipping due to chipping. After removing the deteriorated part of concrete surface completely, it is necessary to use compressed air or vacuum inhaler, Is completely removed.
이물질 제거가 완료되면 침투형 강화 프라이머를 도포하는데, 교량 표면에 붓이나 롤러를 사용하여 고임 없이 고르게 침투형 강화 프라이머를 도포하며, 균열폭이 크거나 심하게 파인 부분은 침투형 강화 프라이머를 2회 이상 충분히 도포한다.When the foreign material removal is completed, the penetrating reinforcing primer is applied. The penetrating reinforcing primer is applied evenly without using a brush or a roller on the surface of the bridge, and a portion having a large crack width or a very fine portion penetrates the penetrating reinforcing primer more than once Lt; / RTI >
본 실시예에 사용되는 침투형 강화 프라이머는, 시중에서 판매되는 일반적인 프라이머이며, "아스크리트 MFP201"로 판매되는 제품이고, 표 2에 기재된 바와 같은 양의 침투형 강화 프라이머를 교량 상판에 도포한다.The penetration-type reinforcing primer used in this example is a commercially available primer, which is a product sold under the trade name "ASCREIT MFP201 ", and the penetrating reinforcing primer as shown in Table 2 is applied to the bridge top plate.
이후에, A부와 B부를 혼합하여 이루어지는 보수재를 교량 상판에 도포하는데, A부로 사용되는 MMA수지는 시중에 판매되는 "로드콘 M40"를 사용하여 시공하게 되며, 표 3에 기재된 사용량으로 B부와 혼합하게 된다.The MMA resin used as part A is applied by using "rod cone M40 " sold in the market, and the amount of the part shown in part B .
공장에서 정량 공급되는 A부와 B부를 현장에 이송한 후에, A부를 믹서에 투입하여 혼합하고, B부 혼합 전에 보수재의 가사시간 약10분 이내에 시공할 수 있는 양을 계산하여 필요한 만큼씩 B부를 믹서에 투입하여 혼합한다.After transferring parts A and B supplied from the factory to the site, add part A to the mixer and mix. Calculate the amount that can be applied within about 10 minutes after the repair part is mixed before part B, and add part B Add to mixer and mix.
A부와 B부가 혼합되어 이루어지는 보수재를 시공 부위에 포설한 후에 미장칼이나 헤라를 이용하여 고르게 펼치고, 넓은 면적을 시공하는 경우에는 일부분씩 분할하여 시공하고, 1차 시공부위와 이후에 시공되는 부위 사이에 간격이나 단차가 생성되지 않도록 밀실하게 시공한다.A repair material made of a mixture of parts A and B is laid on a construction site and then spread evenly using a knife or a saw blade. When a large area is to be constructed, it is divided into several parts and applied. Tightly so as not to create a gap or step between them.
보수재의 사용량은 표 4에 기재한 바와 같으며, 보수재의 품질기준은 표 5에 기재한 바와 같다.The amount of the repair material used is as shown in Table 4, and the quality standard of the repair material is as shown in Table 5.
<실시예1>≪ Example 1 >
MMA폴리머 12중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.6중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 12 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of microsilica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.6 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<실시예2>≪ Example 2 >
MMA폴리머 15중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.6중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 15 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of micro silica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.6 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<실시예3>≪ Example 3 >
MMA폴리머 18중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.6중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 18 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of micro silica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.6 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<비교예1>≪ Comparative Example 1 &
MMA폴리머 10중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.6중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 10 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of microsilica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.6 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<비교예2>≪ Comparative Example 2 &
MMA폴리머 20중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.6중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 20 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of micro silica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.6 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<비교예3>≪ Comparative Example 3 &
MMA폴리머 15중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 0.1중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 15 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of micro silica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 0.1 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
<비교예4>≪ Comparative Example 4 &
MMA폴리머 15중량부로 이루어지는 A부와, 35중량부의 탄산칼슘, 5중량부의 마이크로 실리카, 35중량부의 고강도 규사6호, 10중량부의 고강도 규사5호, 0.3중량부의 벤토나이트 파우더 및 1.0중량부의 과산화망간으로 이루어지는 B부를 혼합하여 교량 상판에 도포하여 경화시킨다.A part composed of 15 parts by weight of MMA polymer, 35 parts by weight of calcium carbonate, 5 parts by weight of micro silica, 35 parts by weight of high strength silica 6, 10 parts by weight of high strength silica 5, 0.3 part by weight of bentonite powder and 1.0 part by weight of manganese dioxide And then the mixture is applied to a bridge top plate and cured.
표 6에 기재한 바와 같이 A부의 투입량을 조절하여 보수재의 경화시간 변화를 시험한 결과, A부의 사용량이 12~18중량부로 포함되는 경우에는 보수재의 경화시간이 30분을 초과하지 않았으며, A부의 사용량이 12중량부 미만인 경우에는 보수재의 경화시간이 30분을 초과하였고, A부의 사용량이 18중량부를 초과하여도 보수재의 경화시간이 더 이상 단축되지 않는 것을 알 수 있다.As shown in Table 6, when changing the curing time of the repair material by controlling the amount of the part A, the curing time of the repair material did not exceed 30 minutes when the amount of the part A was 12 to 18 parts by weight, The curing time of the repairing material is more than 30 minutes and the curing time of the repairing material is not shortened even if the amount of the part A is more than 18 parts by weight.
또한, 경화개시제의 사용량이 0.3중량부 미만인 경우에는 보수재의 경화시간이 30분을 초과하게 되고, 경화개시제의 사용량이 0.9중량부를 초과하는 경우에는 보수재의 경화시간이 20분 이내로 단축되어 필요 이상으로 보수재의 경화가 급격하게 진행되는 것을 알 수 있다.When the amount of the curing initiator used is less than 0.3 parts by weight, the curing time of the repairing agent exceeds 30 minutes. When the amount of the curing initiator is more than 0.9 parts by weight, the curing time of the repairing agent is shortened to 20 minutes or less It can be seen that the hardening of the repairing material proceeds rapidly.
따라서 본 실시예의 A부는 12~18중량부로 포함되고, 경화개시제는 0.3~0.9중량부로 포함되는 것이 바람직함을 알 수 있다.Therefore, it can be understood that part A of the present embodiment is included in 12 to 18 parts by weight, and that the curing initiator is included in 0.3 to 0.9 part by weight.
이로써, 짧은 시간 내에 경화되어 보수공정에 소요되는 시간을 단축시킬 수 있고, 일정 온도 이하로 기온이 낮아지는 동절기에도 보수작업을 진행할 수 있으며, 내마모성, 굴곡성 및 내구성이 우수하고, 임계면과 표면 평탄화 작업을 용이하게 행할 수 있는 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법을 제공할 수 있게 된다.
As a result, it is possible to shorten the time required for the repairing process by curing within a short period of time, to perform the maintenance work even in the winter season when the temperature is lowered to a certain temperature or lower and to provide excellent abrasion resistance, bending property and durability, It is possible to provide a super fast bridge top plate repair material composition and a bridge top plate repair method using the same.
본 발명은 도면에 도시되는 일 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .
또한, 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법을 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 초속경 교량 상판 보수재 조성물 및 이를 이용하는 교량 상판 보수방법이 아닌 다른 제품에도 본 발명의 보수재 조성물 및 이를 이용하는 보수방법이 사용될 수 있다.In addition, although a description has been made by taking as an example the composition of a super fast bridge topsheet repair material and a method of repairing a bridge topsheet using the same, it is merely an illustrative example. In addition to the above- The composition and the repair method using the same can be used.
따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.Accordingly, the true scope of the present invention should be determined by the following claims.
Claims (5)
상기 A부는, 수지 형태로 이루어지고, 상기 B부는, 세라믹 파우더 형태로 이루어지므로 상기 A부와 상기 B부를 각각 별도로 수납하여 교량 상판 보수작업이 진행되는 현장으로 이동한 후에 현장에서 상기 A부와 상기 B부를 혼합하여 보수재를 제조하고,
상기 초속경 교량 상판 보수재 조성물은, 시공 가능온도 영하20℃~영상35℃와, 습도 10%이내와, 가사시간 10~15분과, 경화시간(20℃ 기준) 30~40분의 작업조건을 만족하는 것을 특징으로 하는 초속경 교량 상판 보수재 조성물.
An A part comprising a resinous MMA polymer having a methyl methacrylate structure and an unsaturated polyester structure; And a part A which is mixed with the part A to form a repairing material and is formed in the form of a ceramic powder so as to be cured within a set time after mixing and includes calcium carbonate, micro silica, high strength silica No. 6, high strength silica No. 5, an inorganic thickener and a hardening initiator Wherein the portion A comprises the MMA polymer mixed with 12 to 18 parts by weight and the portion B comprises the calcium carbonate mixed with 32 to 28 parts by weight, the microsilica mixed with 2 to 8 parts by weight, The high strength silicate No. 5 mixed with 32 to 38 parts by weight of the high strength silicate No. 6, the high strength silicate No. 5 mixed with 7 to 13 parts by weight, the inorganic thickening agent mixed with 0.1 to 0.5 part by weight, and the curing initiator mixed with 0.3 to 0.9 part by weight, Wherein the inorganic thickener comprises a bentonite powder, the curing initiator comprises manganese peroxide or benzoyl peroxide, the part A is colorless transparent And a nonvolatile matter content of 44 ± 2 parts by weight and having a specific gravity of 1.06 ± 0.02 and having a viscosity of 30 to 35 cps,
Since the part A is made of resin and the part B is made of a ceramic powder, the part A and the part B are stored separately and moved to a site where the bridge upper plate maintenance work is performed, B part were mixed to prepare a repair material,
The above-mentioned quick-change bridging top plate repair composition satisfies the working conditions of a temperature of -20 ° C. to 35 ° C., a humidity of 10% or less, a pot life of 10 to 15 minutes, and a curing time of 20 to 40 minutes Wherein the topsheet and the topsheet are coated with a coating composition.
상기 A부는, 수지 형태로 이루어지고, 상기 B부는, 세라믹 파우더 형태로 이루어지므로 상기 A부와 상기 B부를 각각 별도로 수납하여 교량 상판 보수작업이 진행되는 현장으로 이동한 후에 현장에서 상기 A부와 상기 B부를 혼합하여 보수재를 제조하고,
상기 초속경 교량 상판 보수재 조성물은, 시공 가능온도, 영하20℃~영상35℃와, 습도 10%이내와, 가사시간 10~15분과, 경화시간(20℃ 기준) 30~40분의 작업조건을 만족하는 것을 특징으로 하는 초속경 교량 상판 보수재 조성물을 이용하는 교량 상판 보수방법.
(a) removing and drying the concrete deterioration part, excursion part and foreign matter of the bridge top plate; (b) applying the penetrating reinforcing primer to the bridge top plate; (c) mixing a part A and a part B constituting a composition for a super fast bridge top board on a bridge top plate to prepare a repair material; And (d) applying a repair material comprising the A part and the B part to a bridge top plate, wherein the repair material is a resinous MMA having a methyl methacrylate structure and an unsaturated polyester structure, An A moiety comprising a polymer; And a part A which is mixed with the part A to form a repairing material and is formed in the form of a ceramic powder so as to be cured within a set time after mixing and includes calcium carbonate, micro silica, high strength silica No. 6, high strength silica No. 5, an inorganic thickener and a hardening initiator Wherein the portion A comprises the MMA polymer mixed with 12 to 18 parts by weight and the portion B comprises the calcium carbonate mixed with 32 to 28 parts by weight, the microsilica mixed with 2 to 8 parts by weight, The high strength silicate No. 5 mixed with 32 to 38 parts by weight of the high strength silicate No. 6, the high strength silicate No. 5 mixed with 7 to 13 parts by weight, the inorganic thickening agent mixed with 0.1 to 0.5 part by weight, and the curing initiator mixed with 0.3 to 0.9 part by weight, The part A is colorless and transparent, has a viscosity of 30 to 35 cps, has a specific gravity of 1.06 ± 0.02, and has a nonvolatile content of 44 ± 2 parts by weight. The two-part liquid acrylic modified unsaturated polyester Made of a resin according to Le, the inorganic thickener, comprises a bentonite powder, and the cure initiator, manganese peroxide or benzoyl peroxide bridge deck repair method using the initial velocity around bridge deck repair material composition comprising a (benzoyl peroxide),
Since the part A is made of resin and the part B is made of a ceramic powder, the part A and the part B are stored separately and moved to a site where the bridge upper plate maintenance work is performed, B part were mixed to prepare a repair material,
The composition of the above super fast bridging upper plate repair material composition can be suitably applied under the following operating conditions: a workable temperature, a temperature of -20 ° C to 35 ° C, a humidity of 10% or less, a pot life of 10 to 15 minutes and a curing time (20 ° C) The method for repairing a bridge deck according to claim 1,
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