KR101094755B1 - Surface protecting composition for all damaged concrete constructions to repair and repairing method using thereof - Google Patents

Surface protecting composition for all damaged concrete constructions to repair and repairing method using thereof Download PDF

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KR101094755B1
KR101094755B1 KR1020110074455A KR20110074455A KR101094755B1 KR 101094755 B1 KR101094755 B1 KR 101094755B1 KR 1020110074455 A KR1020110074455 A KR 1020110074455A KR 20110074455 A KR20110074455 A KR 20110074455A KR 101094755 B1 KR101094755 B1 KR 101094755B1
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concrete structure
grid
powder
surface protection
material composition
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정시영
이영진
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이영진
정시영
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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
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • 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
    • C04B16/00Use 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
    • C04B16/04Macromolecular compounds
    • C04B16/06Macromolecular compounds fibrous
    • C04B16/0616Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • 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
    • C04B14/00Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02Granular materials, e.g. microballoons
    • C04B14/04Silica-rich materials; Silicates
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/34Flow improvers
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60Agents for protection against chemical, physical or biological attack
    • C04B2103/65Water proofers or repellants

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

PURPOSE: A composition for the surface protective material of a concrete structure and a method for neutralizing and salt damage-repair reinforcing the concrete structure using the same are provided to suppress the corrosion of rebar by adding nickel-chrome powder. CONSTITUTION: A composition for the surface protective material of a concrete structure(100) includes 20-40 wt% of normal Portland cement or slag cement, 3-15 wt% of an inorganic expanding agent, 5-20 wt% of diatomaceous earth, 5-15 wt% of kaolin powder, 20-35 wt% of silica powder, 2-8 wt% of nickel-chrome powder, 4-20 wt% of polymer powder, 0.3-3.0 wt% of a water repellent agent, 0.2-1.0 wt% of an emulsifying agent, and 0.05-0.8 wt% of a thickening agent. The nickel-chrome powder contains nickel powder and chrome powder at the weight ratio of 1:1.

Description

콘크리트 구조물의 표면보호재 조성물과 이를 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법{Surface protecting composition for all damaged concrete Constructions to repair and repairing method using thereof}Surface protecting composition for all damaged concrete constructions to repair and repairing method using

본 발명은 콘크리트 구조물의 표면보호재 조성물과 이를 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법에 관한 것으로, 염화물의 침입, 콘크리트의 중성화 및 화학적부식에 의한 발생된 열화현상을 기존 콘크리트 표면에 부착력이 우수하며, 철근방청 및 보수가 한번에 가능한 단면보호 모르타르를 통해 피해를 입은 철근 콘크리트 구조물의 단면을 보수, 보강하는 콘크리트 구조물의 표면보호재 조성물과 이를 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법에 관한 것이다.
The present invention relates to a surface protective material composition of concrete structures, and to neutralizing, salting, and repairing concrete structures using the same. The present invention has excellent adhesion to existing concrete surfaces due to chloride intrusion, neutralization of concrete, and chemical corrosion. The present invention relates to a surface protective material composition of concrete structures for repairing and reinforcing sections of damaged concrete structures through sectional mortar that can be prevented and repaired at once, and to neutralizing, salting and repairing concrete structures using the same.

콘크리트를 사용한 건축, 토목시설물은 국가의 기반 시설로서, 백년대계를 위한 국가 경제에 매우 중요한 역할을 수행하고 있다. 이러한 콘크리트 구조물은 반영구적으로 100년 이상의 수명을 구비하고 있으나, 날로 심각해져가는 대기환경오염과 염해, 화학적부식 등으로 인한 콘크리트의 붓식을 초래하고 이로 인하여 철근 콘크리트 주 재료인 철근이 부식 하여 구조물의 수명을 현저히 단축되는 현상이 발생되고 있다. Concrete construction and civil engineering facilities are the national infrastructure and play a very important role in the national economy for the centuries. These concrete structures have a life span of more than 100 years semi-permanently, but they cause concrete erosion due to air pollution, salt, chemical corrosion, etc., which are becoming more and more severe. Significantly shortening is occurring.

콘크리트는 시멘트의 수화반응으로 인하여 생성된 Ca(OH)에 의해 강알카리성(pH 12∼13)을 가지고 있기 때문에 콘크리트에 매립되어 있는 철근은 일반적으로 부식되지 않는다. 그러나 공기 중의 탄산가스의 작용을 장기적으로 받게 되면 콘크리트중의 수산화칼슘이 서서히 타산칼슘으로 변하여 pH가 0.8∼10 정도로 낮아져 콘크리트가 알카리성을 상실해 중성화가 발생된다. Since concrete has strong alkalinity (pH 12 ~ 13) by Ca (OH) produced by hydration of cement, reinforcing bars embedded in concrete are not generally corroded. However, when the action of carbon dioxide gas in the air for a long time, the calcium hydroxide in the concrete gradually changes to calcium nitrate, the pH is lowered to about 0.8-10, the concrete loses alkalinity and neutralization occurs.

이와 같은 중성화는 콘크리트 표면에서 내부로 진해하며 콘크리트는 탄산가스와 반응한 중량만큼 무거워지고 치밀해진다. 콘크리트가 중성화되고 물과 공기가 침투하면 철근이 녹 쓸고 철근의 체적이 팽창하여 콘크리트에 균열이 발생하여 구조물의 내력과 내구성을 상실하게 된다. This neutralization thickens from the concrete surface to the inside, and the concrete becomes as heavy and dense as the weight reacted with carbon dioxide. When the concrete is neutralized and water and air penetrate, the steel is rusted and the volume of the steel is expanded, causing cracks in the concrete, which results in loss of strength and durability of the structure.

따라서, 기존 철근콘크리트 구조물의 염해, 중성화 및 화학적부식에 대한 방지 기술로서는 표면탈락 및 박리 부분에는 일반적인 신구접착제 도포 후 단면보호 모르타르 도포하고, 이후 콘크리트 표면에 표면 보호재를 도포하고 에폭시 코팅제를 도포하여 보수를 하는 것이 일반적인 보수 방법이다. 이러한 일반적인 보수공법들은 공정이 여러 단계로 나누어져 있어 시공하기가 까다로우며, 전문지식이 있는 자만이 공사를 진행할 수 있는 단점이 있으며, 재료적인 측면에서는 신구접착제는 기존 콘크리트 표면에 이질층을 형성하며, 이로 인하여 모체와 단면 복구 모르타르가 재 탈락 되는 원인이 되었다. 또한 단면복구 모르타르는 단면복구 기능만 부여하다. 기존의 표면 보호재는 무기계 및 유기계가 주로 사용되었으나 유기계 및 무기계의 시공 두개가 아주 얄아 단면보수재와 표면 보호재사이에서 부착력이 떨어져 단면보수재 표면에서 떨어져 나가는 현상이 발생하였다.Therefore, as a technique for preventing salt, neutralization, and chemical corrosion of existing reinforced concrete structures, the surface dropping and peeling parts are applied with a typical new adhesive agent and then a cross-sectional protection mortar is applied, and then a surface protective material is applied to the concrete surface, and an epoxy coating agent is applied for repair. Is a common repair method. These general repair methods are difficult to construct because the process is divided into several stages, and only those with expertise can proceed with the construction. In terms of materials, the old and new adhesives form heterogeneous layers on existing concrete surfaces. This caused the mortality of the matrix and the cross-sectional restoration mortar to fall back. In addition, the cross-sectional recovery mortar gives only the cross-sectional recovery function. Conventional surface protective materials were mainly used for inorganic and organic materials, but two organic and inorganic constructions were very thin, resulting in the adhesion between the surface repair material and the surface protection material falling off from the surface of the surface repair material.

또한, 도장재는 에폭시 및 우레탄을 주성분으로 하는 유기계가 주로 사용되었으나, 도포 후 취성파괴 및 자외선에서 색상이 변질되고 통기성이 없어 콘크리트 속의 수분이 표면으로 밀려 나와 도장제 부착부분을 밀어 도장제가 떨어지는 문제점이 있었다.
In addition, the organic material mainly composed of epoxy and urethane is mainly used, but the color is changed from brittle fracture and ultraviolet rays after the application and the air is not breathable. there was.

공개번호 2006-0086901 (2006.08.01)Publication number 2006-0086901 (2006.08.01) 등록특허공보 10-0995244 (2010.11.12)Patent Registration 10-0995244 (2010.11.12) 등록특허공보 10-0909349 (2009.07.20)Patent Registration 10-0909349 (2009.07.20) 등록특허공보 10-1039833 (2011.06.01)Patent Publication 10-1039833 (2011.06.01) 등록특허공보 10-0787477 (2007.12.13)Patent Registration 10-0787477 (2007.12.13) 등록특허공보 10-0959415 (2010.05.14)Patent Registration 10-0959415 (2010.05.14)

본 발명의 목적은 중성화 진행, 염화물 침투, 화학적 부식 및 동해로 인하여 콘크리트 구조물에 피해가 있을 경우, 보수공정이 단순하고, 콘크리트 구조물의 손상부위를 신속하게 재생할 수 있는 콘크리트 구조물의 표면보호재 조성물과 이를 이용한 콘크리트 구조물 보수공법을 제공하는 것이다. An object of the present invention is to provide a surface protection material composition of a concrete structure that is simple to repair, and to quickly reproduce the damaged part of the concrete structure, if there is damage to the concrete structure due to the neutralization progress, chloride penetration, chemical corrosion and the East Sea and It is to provide a repair method for the concrete structure.

본 발명의 또 다른 목적은 규조토 및 카올린 분말을 첨가하여 기존 콘크리트와의 부착력을 증진 및 니켈크롬분말을 첨가하여 철근의 부식을 억제하며, 시공상 붓, 롤러 또는 흙 손 등의 작업공구를 이용하여 간편하게 공사를 진행시켜 공사비를 절감할 수 있는 콘크리트 구조물의 표면보호재 조성물과 이를 이용한 콘크리트 구조물 보수공법을 제공하는 것이다.
Another object of the present invention is to add the diatomaceous earth and kaolin powder to enhance the adhesion to existing concrete and to suppress the corrosion of reinforcing steel by adding nickel chromium powder, using a work tool such as a brush, roller or trowel in construction It is to provide a surface protection material composition of the concrete structure and the concrete structure repair method using the same that can reduce the construction cost by simply proceeding the construction.

본 발명의 표면보호재 조성물은 보통포틀랜드시멘트 또는 슬라그시멘트 20∼40wt%, 팽창재 3∼15wt%, 규조토 5∼20wt%, 카올린분말 5∼15wt%, 실리카 분말 20∼35wt%, 니켈크롬분말 2∼8wt%, 폴리머분말 4∼20wt%, 발수재 0.3∼3.0wt%, 고성능 유동화제 0.2∼1.0wt%, 증점제 0.05∼0.8wt%를 포함한다. The surface protective material composition of the present invention is usually 20 to 40wt% portland cement or slag cement, 3 to 15wt% expanding material, 5 to 20wt% diatomaceous earth, 5 to 15wt% kaolin powder, 20 to 35wt% silica powder, 2 to nickel chrome powder 8 wt%, polymer powder 4-20 wt%, water repellent 0.3-3.0 wt%, high performance fluidizing agent 0.2-1.0 wt%, thickener 0.05-0.8 wt%.

본 발명은 콘크리트 구조물의 열화된 부분을 제거하고, 열화된 부분이 제거된 표면보호부위에 대한 이물질을 제거하는 표면처리단계;The present invention is to remove the deteriorated portion of the concrete structure, the surface treatment step of removing the foreign matter on the surface protection site from which the deteriorated portion is removed;

이물질이 제거된 콘크리트 구조물의 표면보호부위에 고정철물을 이용하여 격자망을 고정하는 격자망 설치단계;A grid network installation step of fixing the grid network by using a fixing hardware on the surface protection portion of the concrete structure from which foreign substances have been removed;

격자망이 고정된 콘크리트 구조물의 표면보호부위에 청구항 1 내지 청구항 6 중 어느 한 항으로 이루어진 표면보호재 조성물을 도포하는 표면보호단계;A surface protection step of applying a surface protection material composition of any one of claims 1 to 6 on the surface protection portion of the concrete structure to which the grid is fixed;

표면보호단계 후 표면을 세라믹 코팅재로 마감처리하는 마감처리단계;를 포함하도록 되어 있다.
It is to include; a finishing step of finishing the surface with a ceramic coating material after the surface protection step.

본 발명은 중성화, 염해, 동해 및 화학적부식의 열화를 받아 콘크리트 구조물에 손상이 있을 경우 및 손상이 예측되는 구조물을 원상태로 신속하게 재생시키는 효과가 있다. The present invention has an effect of rapidly regenerating a structure to be damaged when the concrete structure is damaged and is expected to be damaged by neutralization, salt damage, east sea and chemical corrosion.

또한, 기존 철근노출 보수 공사시 철근노출 부위에 철근 방청제를 따로 시공 후 보수 모르타르를 도포하는 것이 일반적인 보수공법이나, 본 발명은 니켈크롬분말이 첨가되어 있어, 본 발명의 표면보호재 조성물 자체만으로도 철근방청 효과 및 단면 보수가 가능하다. In addition, in the existing rebar exposure repair work, it is a general repair method to apply a repair mortar after the rebar rust preventive is applied to the rebar exposure site separately, but in the present invention, nickel chromium powder is added, and only the surface protection material composition of the present invention alone Effect and cross section repair are possible.

또한, 본 발명은 보수 공사시 공정이 단순하여, 공사기간이 짧고, 시공성이 간단하여 숙련된 기능공이 필요하지 않아, 일반적인 기능공이면 누구나 시공이 가능하다. In addition, the present invention is simple in the process of repair work, the construction period is short, the workability is simple, skilled skilled workers are not required, anyone can be installed if the general skill workers.

또한, 본 발명은 주재료가 무기계재료로 이루어져 있어, 통기성을 확보할 수 있으며, 이를 통해 보수재료의 문제점이 되는 통기성 문제의 해소가 가능하다. In addition, the present invention is the main material is made of an inorganic material, it is possible to ensure the breathability, through which the problem of breathability which is a problem of the repair material is possible.

또한, 본 발명은 규조토 및 카올린분말을 첨가하여 기존 재료보다 부착성능을 향상시켰으며, 표면 보호재 표면의 잔 균열을 억제하는 효과가 있다. In addition, the present invention improved the adhesion performance than the existing material by adding diatomaceous earth and kaolin powder, and has the effect of suppressing the residual cracks on the surface of the surface protective material.

또한, 본 발명은 앙카 및 유리섬유보강재를 이용하여 보강이 필요한 콘크리트 구조물에 대하여 보강효과를 극대화할 수 있는 등 많은 효과가 있다.
In addition, the present invention has a number of effects, such as to maximize the reinforcement effect for concrete structures that require reinforcement using anchor and glass fiber reinforcement.

도 1 은 본 발명에 따른 보수공정을 보인 예시도
도 2 는 본 발명에 따른 고정철물의 구성을 보인 예시도
도 3 은 본 발명에 따른 격자망 및 고정철물의 구성을 보인 예시도
1 is an exemplary view showing a repair process according to the present invention
2 is an exemplary view showing a configuration of a fixed hardware according to the present invention
Figure 3 is an exemplary view showing the configuration of the grid and the fixed iron according to the invention

본 발명의 표면보호재 조성물은 보통포틀랜드시멘트 또는 슬라그시멘트 20∼40wt%, 무기계 팽창재 3∼15wt%, 규조토 5∼20wt%, 카올린분말 5∼15wt%, 실리카 분말 20∼35wt%, 니켈크롬분말 2∼8wt%, 폴리머분말 4∼20wt%, 발수재 0.3∼3.0wt%, 고성능 유동화제 0.2∼1.0wt%, 증점제 0.05∼0.8wt%를 포함한다.
The surface protective material composition of the present invention is usually 20 to 40wt% portland cement or slag cement, 3 to 15wt% inorganic expansion material, 5 to 20wt% diatomaceous earth, 5 to 15wt% kaolin powder, 20 to 35wt% silica powder, nickel chromium powder 2 8 wt%, polymer powder 4-20 wt%, water repellent 0.3-3.0 wt%, high performance fluidizing agent 0.2-1.0 wt%, thickener 0.05-0.8 wt%.

상기 시멘트는 보통 포틀랜드 시멘트를 사용 하지만, 해양 환경 조건하에 놓여있는 구조물인 경우에는 슬래그시멘트나 내황산염 시멘트를 사용하는 것이 내구성에 우수한 특징을 나타낸다. 슬래그시멘트에 함유되어 있는 슬래그는 잠재 수경성 물질이며, 시멘트의 수화반응시 생성되는 Ca(OH)2와 반응하여 칼슘실리케이트 수화물을 생성시킴으로서 경화체의 미세한 간극을 치밀하게 채워 내구성이 우수한 경화체를 생성시킬 뿐만 아니라 산에 대한 저항성을 높이기 위한 목적으로 사용이 된다. The cement is usually portland cement, but in the case of a structure placed under marine environmental conditions, the use of slag cement or sulfate resistant cement shows excellent durability. The slag contained in the slag cement is a latent hydraulic material, and reacts with Ca (OH) 2 produced during the hydration of cement to form calcium silicate hydrate, thereby densely filling the fine gap of the hardened body to create a hardened body having excellent durability. It is also used for the purpose of increasing acid resistance.

시멘트의 함량이 20wt% 미만인 경우에는 경화 모르타르의 강도가 감소하게 되며, 40wt%를 초과할 경우에는 취성이 높아져서 충격에 약해지거나 재료의 점성이 높아지게 되어 현장 시공성이 감소하게 되는 단점이 있다.
If the cement content is less than 20wt%, the strength of the hardened mortar is reduced, and if it exceeds 40wt%, the brittleness is increased to weaken the impact or to increase the viscosity of the material, thereby reducing the field workability.

상기 무기계 팽창재는 주 구성광물이 C4A3S 인 물질로서, 석고 및 CaO 또는 Ca(OH)2와 반응을 하여 팽창성 수화물인 에트링자이트(ettringite)를 생성시킨다. 이 수화물은 시멘트의 건조수축 및 경화수축에 의한 용적의 감소를 방지함으로서 경화체의 균열 및 들뜸을 방지하는 역할을 하는 것으로서 3wt% 미만인 경우에는 경화체의 수축을 감소시키는 역할을 하지 못하고, 15wt% 초과한 경우에는 과도한 팽창을 일으킴으로서 팽창에 의한 균열발생, 압축강도의 저하 등 경화체에 나쁜 영향을 발생시킬 수 있다.
The inorganic expander is C 4 A 3 S, the main constituent mineral, and reacts with gypsum and CaO or Ca (OH) 2 to produce ettringite, an expandable hydrate. This hydrate prevents the reduction of volume due to dry and hardening shrinkage of the cement, and prevents cracking and lifting of the hardened body. When the hydrate is less than 3 wt%, it does not reduce the shrinkage of the hardened body and exceeds 15 wt%. In this case, by causing excessive expansion, it may cause a bad effect on the cured body, such as cracking caused by expansion, lowering of compressive strength.

상기 규조토는 수중 단세포 식물의 잔해가 퇴적되어 생성된 화석토의 일종으로서 대부분이 함수 비정질 실리카로 이루어져 있으며, 약 86∼93wt%의 실리카를 함유한 다공성 구조를 갖고 있다. 비중은 약 2.1로 시멘트의 비중인 3.14보다 매우 낮기 때문에 표면 보호재의 전체적인 비중을 낮추어 주어 콘크리트 구조물의 수직부위 뿐 만이 아니라 천정부위의 시공에 매우 유리한 조건을 제시할 수 있다. 또한 다공성 구조로 인하여 열의 전도성이 낮기 때문에 하절기 직사광선에 의한 열의 차단과 구조물의 열응력을 감소시켜 팽창과 수축에 의한 변형력을 감소시킴으로서 구조물의 내구성을 향상시켜 주게 된다.The diatomaceous earth is a kind of fossil soil produced by depositing debris of single-celled plants in water, and most of them are made of hydrous amorphous silica, and have a porous structure containing about 86 to 93 wt% silica. Since the specific gravity is about 2.1, which is much lower than the specific gravity of cement 3.14, the overall specific gravity of the surface protective material can be lowered, thereby providing a very favorable condition for the construction of the ceiling as well as the vertical portion of the concrete structure. In addition, the low conductivity of the heat due to the porous structure improves the durability of the structure by reducing the thermal stress of the structure and the thermal stress of the structure to reduce the strain due to expansion and contraction.

본 발명에서 사용한 규조토는 800∼1200℃의 소성로에서 소성과정을 통해 유기물을 제거한 소성품으로 무수히 많은 다공구조를 갖고 있는 특징이 있으며, 판상의 다공성 구조를 갖는 흑운모, 백운모, 천매암 등의 분말도 사용할 수 있다. 규조토는 다공성 구조를 갖기 때문에 콘크리트 모체나 하부에서 발생되는 수증기압을 감소시켜 접착재와 콘크리트 모체와의 계면에서 발생되는 수증기압에 의한 들뜸을 방지시키는 역할을 한다. 본 발명의 목적을 달성하기 위해서 규조토는 200메쉬 이하의 분말이 적절하며, 200메쉬를 초과하는 분말을 사용할 경우, 균열발생 위험성이 있다. 또한, 함량이 5wt% 미만인 경우에는 들뜸의 방지에 큰 효과가 없고, 20wt% 초과할 경우에는 경화체의 강도가 감소되는 단점이 있다.
Diatomaceous earth used in the present invention is a fired product from which organic matter is removed through a firing process at 800-1200 ° C., and has a myriad of porous structures, and powders such as biotite, dolomite, and natural rock with a plate-like porous structure can also be used. Can be. Since diatomaceous earth has a porous structure, the diatomaceous earth reduces the water vapor pressure generated in the concrete matrix or the lower part, thereby preventing the lifting by the water vapor pressure generated at the interface between the adhesive material and the concrete matrix. In order to achieve the object of the present invention, diatomaceous earth has a powder of 200 mesh or less is appropriate, when using a powder exceeding 200 mesh, there is a risk of cracking. In addition, when the content is less than 5wt%, there is no significant effect on the prevention of lifting, and when it exceeds 20wt%, the strength of the cured product is reduced.

상기 카올린 분말은 카올린 광물을 600∼800℃ 정도로 열처리를 하여 카올린 내부의 결합수 및 층간수를 제거하고 활성화, 즉 반응성을 부여한 것으로, 주요 구성성분은 SiO2, Al2O3, Fe2O3이며 이들 성분의 합이 96wt% 이상의 것이 적절하고, 입자의 크기는 1.0∼3㎛, 바람직하게는 평균입경 약 1.5㎛의 것을 사용하며, 비중은 2.6 이다. 이 카올린 분말은 시멘트의 수화반응으로 생성되는 수산화칼슘(Ca(OH)2)과 반응하여 칼슘실리케이트 수화물을 생성시킴으로서 시멘트의 조직을 치밀하게 하고, 실리카 분말과의 계면에서 주로 생성되는 수산화칼슘 양을 감소시킴으로서 표면보호재의 내구성 및 부착강도를 향상시켜 방수 도막의 들뜸을 방지한다. 카올린의 함량이 5wt% 미만인 경우에는 들뜸 방지에 효과가 없고, 15wt% 초과하는 경우에는 슬러리의 점도가 크게 상승하여 작업성이 감소하게 된다.
The kaolin powder is a heat treatment of the kaolin mineral to 600 ~ 800 ℃ to remove the binding water and interlayer water in the kaolin to activate, that is, give the reactivity, the main components are SiO 2 , Al 2 O 3 , Fe 2 O 3 It is appropriate that the sum of these components is 96 wt% or more, the particle size is 1.0 to 3 mu m, preferably one having an average particle diameter of about 1.5 mu m, and a specific gravity is 2.6. This kaolin powder reacts with calcium hydroxide (Ca (OH) 2 ) produced by the hydration of cement to produce calcium silicate hydrate, thereby densifying the structure of the cement and reducing the amount of calcium hydroxide mainly produced at the interface with the silica powder. It improves the durability and adhesive strength of the surface protective material to prevent the waterproof coating from rising. When the content of kaolin is less than 5wt%, there is no effect of preventing lifting, and when the content of the kaolin is more than 15wt%, the viscosity of the slurry is greatly increased to reduce workability.

상기 실리카 분말은 표면보호재의 작업성 및 안정성을 확보하기 위하여 사용되는 것으로, 입도 1.0㎛ 이하의 것을 사용하며, 20wt% 미만인 경우에는 작업성 저하 및 균열 발생에 대한 안정성이 감소하고, 35wt% 초과하여 사용될 경우에는 압축강도 및 표면의 평탄성이 감소하게 된다.
The silica powder is used to ensure the workability and stability of the surface protective material, the particle size of 1.0㎛ or less is used, when less than 20wt% decreases in workability and cracking stability, and exceeds 35wt% When used, compressive strength and surface flatness are reduced.

상기 니켈크롬분말은 표면보호재에 항균작용 및 방청작용을 부여하기 위하여 사용되는 것으로서, 니켈분말 및 크롬분말은 모두 200메쉬 이하의 분말을 사용하며, 사용량이 2wt% 미만인 경우에는 상기의 기능성 부여 효과가 미약하고, 8wt% 초과한 경우에는 슬러리 상태의 혼합물에서 재료의 균일한 분산성이 감소하게 된다. 또한, 200 메쉬를 초과하는 분말을 사용할 경우, 분산성이 저하되는 문제점이 발생된다.The nickel chromium powder is used to impart antimicrobial and rust-preventing effects to the surface protective material. Nickel powder and chromium powder both use powders of 200 mesh or less. If weak, exceeding 8 wt%, the uniform dispersibility of the material in the slurry mixture is reduced. In addition, when using a powder of more than 200 mesh, there is a problem that the dispersibility is lowered.

상기 니켈크롬분말은 니켈분말과 크롬분말이 1:1의 중량비로 혼합되어 있으며, 이러한 혼합중량비율은 본 발명 표면보호재 조성물의 슬러리 상태시 균질성 저하를 방지하기 위한 것이다. 즉, 본 발명은 비중이 높은 니켈분말에 비중이 낮은 크롬분말을 최적비율로 혼합하여 표면보호재 조성에 항균작용 및 방청작용을 부여함과 동시에 슬러리 상태에서의 균질성 저하를 방지하도록 되어 있다.
The nickel chromium powder is nickel powder and chromium powder is mixed in a weight ratio of 1: 1, this mixed weight ratio is to prevent the homogeneity deterioration in the slurry state of the surface protective material composition of the present invention. That is, the present invention is to mix the chromium powder with a low specific gravity in the optimum ratio with a high specific gravity nickel powder to impart antimicrobial and anti-rust effect to the surface protective material composition and to prevent the homogeneity in the slurry state.

상기 폴리머 분말은 아크릴계, 스티렌계, EVA계, 아크릴-비닐아세테이트계 등의 폴리머 분말을 1종류 또는 2종류를 혼용해서 사용할 수 있으며, 바람직하게는 아크릴계 분말수지를 사용한다. 이와 같은 폴리머 분말은 콘크리트나 몰탈로 되어 있는 바탕면의 조건에 따라 크게 영향을 받지 않고 부착력을 높이기 위한 목적으로 사용이 된다. The polymer powder may be a mixture of one or two kinds of polymer powders such as acrylic, styrene, EVA, and acryl-vinylacetate, and preferably acrylic powder resin is used. Such polymer powder is used for the purpose of increasing adhesion without being greatly influenced by the condition of the base surface of concrete or mortar.

또한, 상기 폴리머 분말은 사용양이 4wt% 미만일 경우에는 바탕면의 상태에 따른 부착력의 차이가 크고 20wt% 초과한 경우에는 경화체의 강도가 감소하게 된다.
In addition, when the amount of the polymer powder used is less than 4wt%, the difference in adhesion force according to the state of the base surface is large and when the strength exceeds 20wt%, the strength of the cured product is reduced.

상기 발수재는 물이 표면보호재의 내부로 침투되어 들어감으로서 장기적으로 발생되는 구조물의 열화를 방지하는 역할을 한다. 사용양이 0.3wt% 미만인 경우에는 물의 내부 확산을 방지하는 효과가 미미하고, 3wt%를 초과하여 사용할 경우에는 단면 보수재의 강도 및 부착성을 감소시키게 된다. 상기 발수재는 스테아린산염을 사용하는 것이 바람직하고, 상기 스테아린산염은 금속염으로 칼슘염 또는 나트륨염을 사용할 수 있다.
The water repellent serves to prevent deterioration of the structure that is generated in the long term as water penetrates into the surface protective material. If the amount used is less than 0.3wt%, the effect of preventing the internal diffusion of water is insignificant, and when used in excess of 3wt% will reduce the strength and adhesion of the cross-sectional repair material. As the water repellent, stearic acid salt is preferably used, and the stearic acid salt may be calcium salt or sodium salt as a metal salt.

상기 고성능 유동화제는 작업성을 부여하기 위하여 첨가하는 것으로, 멜라민계, 나프탈렌계, 카르복실계 고성능 유동화제중에서 하나 또는 2개를 복합적으로 사용한다. 또한, 상기 고성능 유동화제는 사용양이 0.2% 미만에서는 유동성 증진효과가 미미하고, 1.0% 초과하여 사용할 경우에는 유동성의 증진에 큰 효과가 없다.
The high performance fluidizing agent is added to impart workability, and one or two of melamine, naphthalene and carboxyl high performance fluidizing agents are used in combination. In addition, the high performance fluidizing agent has a slight fluidity enhancing effect when the amount is less than 0.2%, and when used in excess of 1.0%, there is no significant effect on the improvement of fluidity.

상기 증점제는 시멘트 성분과 반응하는 물의 증발 및 콘크리트 모체로의 이탈을 막기 위하여 사용하는 것으로, 셀루로즈계 증점제를 사용하며, 사용양이 0.05wt% 미만일 경우에는 표면에서의 수분 이탈을 억제하는 능력이 약하고, 0.8wt% 초과할 경우에는 점도의 지나친 증가로 작업성이 감소하게 된다.
The thickener is used to prevent the evaporation of water reacting with the cement component and the detachment to the concrete matrix, using a cellulose-based thickener, and when the amount used is less than 0.05wt%, the ability to suppress the water escape from the surface If it is weak and exceeds 0.8 wt%, workability decreases due to excessive increase in viscosity.

이하 상기와 같이 조성물 본 발명의 단면보호 조성물을 이용한 단면보수, 보강공법을 설명하면 다음과 같다. Hereinafter, the cross-sectional repair and reinforcement method using the cross-sectional protection composition of the present invention as described above are as follows.

도 1 은 본 발명에 따른 보수공정을 보인 예시도를, 도 2 는 본 발명에 따른 고정철물의 구성을 보인 예시도를, 도 3 은 본 발명에 따른 격자망 및 고정철물의 구성을 보인 예시도를 도시한 것으로, 도 1 의 (a)는 열화부 치핑 후 표면 세정하는 표면처리단계를, 도 1 의 (b)는 격자망 설치단계를, 도 1 의 (c)는 표면보호단계(표면보호재 조성물 도포)를, 도 1 의 (d)는 표면보호재 조성물 도포후 경화과정을, 도 1 의 (e)는 마감처리단계(세라믹 코팅재 도포)를 각각 도시한 것이다.
1 is an exemplary view showing a repair process according to the present invention, Figure 2 is an exemplary view showing a configuration of a fixed hardware according to the present invention, Figure 3 is an exemplary view showing a configuration of a grid and a fixed steel according to the present invention Figure 1 (a) is a surface treatment step of surface cleaning after chipping the deterioration portion, Figure 1 (b) is a grid net installation step, Figure 1 (c) is a surface protection step (surface protection material (D) of FIG. 1 shows a curing process after application of the surface protective material composition, and (e) of FIG. 1 shows a finishing step (coating of a ceramic coating material), respectively.

본 발명은 콘크리트 구조물(100)의 열화된 부분을 제거하고, 열화된 부분이 제거된 표면보호부위(110)에 대한 이물질을 제거하는 표면처리단계;The present invention removes the deteriorated portion of the concrete structure 100, the surface treatment step of removing foreign matter on the surface protection portion 110, the deteriorated portion is removed;

이물질이 제거된 콘크리트 구조물의 표면보호부위(110)에 고정철물(10)을 이용하여 격자망(20)을 고정하는 격자망 설치단계;A grid network installation step of fixing the grid network 20 by using the fixing hardware 10 to the surface protection portion 110 of the concrete structure from which foreign substances are removed;

격자망(20)이 고정된 콘크리트 구조물의 표면보호부위(110)에 표면보호재 조성물(30)을 도포하는 표면보호단계;A surface protection step of applying the surface protection material composition 30 to the surface protection portion 110 of the concrete structure to which the grid 20 is fixed;

표면보호단계 후 표면을 세라믹 코팅재(40)로 마감처리하는 마감처리단계;를 포함한다.
It includes; a finishing step of finishing the surface with a ceramic coating material 40 after the surface protection step.

상기 표면처리단계는 염해, 중성화(탄산화) 및 화학적 부식 등과 같은 노후화 현상에 의해 발생된 표면콘크리트에서의 피복재 탈락, 조골재 노출, 물곰보 집중, 녹물오염, 들뜸 부위 및 부식을 제거하는 것으로, 열화된 콘크리트 표면을 그라인더 등의 공구를 이용하여 완전 제거한 후, 치핑된 콘크리트 구조물의 표면 즉, 표면보호부위(110)를 50∼150㎏/㎡의 고압세정기를 사용하여 이물질을 완전히 제거한다.
The surface treatment step is to remove the coating material from the surface concrete caused by aging phenomena such as salting, neutralization (carbonation), chemical corrosion, etc., exposure to coarse aggregate, concentration of moth, concentration of green water, uplift and corrosion. After completely removing the concrete surface using a tool such as a grinder, the foreign material is completely removed using a high-pressure cleaner of 50 to 150 kg / m 2, that is, the surface of the chipped concrete structure, that is, the surface protection part 110.

상기 격자망 설치단계는 격자망(20)을 고정철물(10)을 이용하여 고정하는 단계로, 고정철물(10)에 격자망(20)을 끼워 고정한 후, 고정철물(10)을 콘크리트 구조물의 표면보호부위(110)에 고정설치하여, 격자망(20)의 위치를 고정한다. The grid installation step is to fix the grid 20 by using the fixed hardware 10, and fixed to the fixed grid 10 by fitting the grid 20, the fixed hardware 10 of the concrete structure By fixing the surface protection portion 110, to fix the position of the grid 20.

상기 격자망(20)은 보강을 위한 것으로, 유리섬유 또는 탄소섬유로 이루어져 있으며, 상기 격자망의 교차부위(21)에는 고정철물이 삽입관통되는 사각형상의 고정홀(22)이 형성되어 있다. The grid 20 is for reinforcement, made of glass fiber or carbon fiber, and the intersection portion 21 of the grid is formed with a rectangular fixing hole 22 through which a fixed steel is inserted.

상기 고정철물(10)은 격자망의 고정홀(22)을 관통하는 고정부(11)와, 상기 고정부에 직교하여 형성되고 고정홀(22)을 관통하는 하단지지부(12)와, 상기 하단지지부(12)에 이격되어 고정부에 직교하도록 형성된 상단지지부(13)와, 상기 하단지지부(12)와 상단지지부(13) 사이에 위치하는 격자망 삽입부(14)를 포함하되, 상기 하단지지부(12)와 상단지지부(13)는 사각플레이트 형상을 구비하도록 되어 있다. The fixing hardware 10 includes a fixing part 11 penetrating through the fixing hole 22 of the grid network, a lower support part 12 formed orthogonally to the fixing part and penetrating the fixing hole 22, and the lower end of the fixing iron member 11. And an upper support part 13 spaced apart from the support part 12 so as to be orthogonal to the fixed part, and a grid insertion part 14 positioned between the lower support part 12 and the upper support part 13, wherein the lower support part is provided. 12 and the upper end support 13 have a square plate shape.

이때, 상기 격자망(20)의 고정홀(22)과 고정철물의 상단지지부(13) 및 하단지지부(12)는 모두 사각형상으로 이루어져 있으며, 상기 고정철물의 상단지지부(13)와 하단지지부(12) 사이에 격자망(20)이 위치하도록 격자망의 고정홀(22)내로 고정철물이 삽입관통되어 설치된다.At this time, the fixing hole 22, the upper support portion 13 and the lower support portion 12 of the grid 20 is made of a rectangular shape, the upper support portion 13 and the lower support portion ( 12) the fixing hardware is inserted into the fixing hole 22 of the grid so that the grid 20 is located between the grids 20.

상기와 같이 구성된 고정철물(10)은 고정부(11)와 하단지지부(12)가 격자망의 사각형상 고정홀(22)을 관통하도록 격자망의 고정홀(22)에 끼워진 후, 끼워진 고정철물(10)을 90°회전시켜 격자망의 고정홀(22)과 고정철물의 하단지지부(12) 및 상단지지부(13)가 서로 엇갈리도록 격자망(20)에 설치된다. The fixed hardware 10 configured as described above is fitted to the fixing hole 11 of the grid net so that the fixing part 11 and the lower support part 12 penetrates the rectangular fixing holes 22 of the grid net, 10 is rotated by 90 ° so that the fixing hole 22 of the grid mesh, the lower support portion 12 and the upper support portion 13 of the fixed steel are staggered from each other.

이와 같이 격자망(20)에 고정철물(10)이 설치되면, 고정철물(10)의 격자망 지지부(14)에 격자망(20)이 끼워져 위치하게 되고, 격자망(20)의 고정홀(22)을 통한 고정철물(10)의 이탈이 방지됨과 동시에, 고정철물(10)에 의해 격자망(20)이 견고하게 고정된다. When the fixed hardware 10 is installed in the grid 20 in this way, the grid net 20 is inserted into the grid net support 14 of the fixed hardware 10, the fixing hole of the grid net 20 ( While the separation of the fixed hardware 10 through the 22 is prevented, the grid 20 is firmly fixed by the fixed hardware 10.

상기와 같이, 격자망(20)에 고정철물(10)이 끼워진 상태에서, 고정철물(10)을 콘크리트 구조물의 표면보호부위에 고정설치하게 되면, 고정철물(10)의 고정에 의해 격자망(20)의 위치가 고정되게 된다.
As described above, when the fixing hardware 10 is fixed to the surface protection portion of the concrete structure in the state in which the fixed hardware 10 is fitted to the grid 20, the grid net (by fixing the fixed steel 10) The position of 20) is fixed.

상기 표면보호재 도포단계는 로울러, 도료작업용 붓 등의 작업공구(50) 또는 에어스프레이건 등을 사용하여 표면보호재 조성물(30)을 격자망(20)이 설치된 콘크리트 구조물의 표면보호부위(110)에 균일하게 도포한다. The surface protective material applying step is to use a work tool 50, such as a roller, paint work brush or air spray gun to the surface protective material composition 30 to the surface protection portion 110 of the concrete structure on which the grid 20 is installed. Apply evenly.

이때, 상기 표면보호재 조성물(30)은 본 발명에 따른 표면보호재 조성물로, 보통포틀랜드시멘트 또는 슬라그시멘트 20∼40wt%, 무기계 팽창재 3∼15wt%, 규조토 5∼20wt%, 카올린분말 5∼15wt%, 실리카 분말 20∼35wt%, 니켈크롬분말 2∼8wt%, 폴리머분말 4∼20wt%, 발수재 0.3∼3.0wt%, 고성능 유동화제 0.2∼1.0wt%, 증점제 0.05∼0.8wt%를 포함한다.
At this time, the surface protective material composition 30 is a surface protective material composition according to the present invention, 20 to 40 wt% ordinary portland cement or slag cement, 3 to 15 wt% inorganic type expansion material, 5 to 20 wt% diatomaceous earth, 5 to 15 wt% kaolin powder 20 to 35 wt% silica powder, 2 to 8 wt% nickel chromium powder, 4 to 20 wt% polymer powder, 0.3 to 3.0 wt% water repellent, 0.2 to 1.0 wt% high performance fluidizing agent, and 0.05 to 0.8 wt% thickener.

상기 표면 코팅재 도포단계는 표면보호재 조성물(30)의 도포 경화후, 2∼3일 후에, 로울러나 도료작업용 붓, 에어스프레이건 등을 사용하여 세라믹 코팅재(40)를 원액 그대로 0.3㎜(0.46㎏/㎡) 함침시켜 균일하게 도포한다.
The surface coating material coating step is 2 to 3 days after the application of the surface protective material composition 30, using a roller or a paint brush, an air spray gun, etc. using the ceramic coating material 40 as a stock solution 0.3 mm (0.46 kg / M2) Impregnated and applied evenly.

이와 같은 본 발명의 콘크리트 구조물 보수공법은 철근이 노출된 부위에 대해서도 별도의 방청재 도포없이 보수가 가능한다.
Such a concrete structure repair method of the present invention can be repaired even without the application of a separate rust preventive material for the exposed bar.

이하 본 발명의 표면보호재 조성물을 실시예에 의해 상세히 설명하면 다음과 같다. Hereinafter, the surface protective material composition of the present invention will be described in detail with reference to Examples.

실시예 1Example 1

시멘트 25.8wt%, 팽창재 8wt%, 규조토 12wt%, 카올린분말 10wt%, 실리카 분말 25wt%, 니켈분말 2.5wt%, 크롬분말 2.5wt%, 폴리머 분말(아크릴계 분말수지) 12wt%, 스테아린산염(칼슘염) 1.5wt%, 고성능 유동화제(멜라민계) 0.5wt%, 증점제(셀룰로즈계) 0.2wt%으로 이루어진 표면보호재 조성물에 대하여, 부착강도, 물흡수계수, 습기투과성, 길이변화율, 들뜸현상 관찰 시험을 하였으며, 그 결과는 [표1]과 같다. Cement 25.8wt%, Expanding material 8wt%, Diatomaceous earth 12wt%, Kaolin powder 10wt%, Silica powder 25wt%, Nickel powder 2.5wt%, Chromium powder 2.5wt%, Polymer powder (acrylic powder resin) 12wt%, Stearic acid salt (calcium salt) ) Adhesion strength, water absorption coefficient, moisture permeability, length change rate, and lifting phenomenon were observed for the surface protective material composition consisting of 1.5 wt%, high performance fluidizing agent (melamine type) and 0.5 wt% thickener (cellulose). The results are shown in [Table 1].

[표1]Table 1

Figure 112011057996282-pat00001

Figure 112011057996282-pat00001

실시예 2Example 2

시멘트 33.8wt%, 팽창재 8wt%, 규조토 4wt%, 카올린분말 10wt%, 실리카 분말 25wt%, 니켈분말 2.5wt%, 크롬분말 2.5wt%, 폴리머 분말(아크릴계 분말수지) 12wt%, 스테아린산염(칼슘염) 1.5wt%, 고성능 유동화제(멜라민계) 0.5wt%, 증점재(셀룰로즈계) 0.2wt%으로 이루어진 표면보호재 조성물에 대하여 부착강도, 물흡수계수, 길이변화율, 들뜸현상 시험을 하였으며, 이를 실시예 1 의 조성비와 비교하였다. 그 결과는 [표2]와 같다. Cement 33.8wt%, Expanding material 8wt%, Diatomaceous earth 4wt%, Kaolin powder 10wt%, Silica powder 25wt%, Nickel powder 2.5wt%, Chromium powder 2.5wt%, Polymer powder (acrylic powder resin) 12wt%, Stearic acid salt (calcium salt) ) Adhesion strength, water absorption coefficient, length change rate, and lifting phenomenon were tested for the surface protection material composition consisting of 1.5 wt%, high performance fluidizing agent (melamine type), 0.5 wt%, thickener (cellulose) and 0.2 wt%. It was compared with the composition ratio of Example 1. The results are shown in [Table 2].

[표2][Table 2]

Figure 112011057996282-pat00002

Figure 112011057996282-pat00002

실시예 3Example 3

시멘트 21.8wt%, 팽창재 8wt%, 규조토 21wt%, 카올린분말 10wt%, 실리카 분말 20wt%, 니켈분말 2.5wt%, 크롬분말 2.5wt%, 폴리머 분말(아크릴계분말수지) 12wt%, 스테아린산염(칼슘염) 1.5wt%, 고성능 유동화제(멜라민계) 0.5wt%, 증점제(셀룰로즈계) 0.2wt%으로 이루어진 표면보호재 조성물에 대하여 부착강도, 물흡수계수, 길이변화율, 들뜸현상 시험을 하였으며, 이를 실시예 1 의 조성비와 비교하였다. 그 결과는 [표3]과 같다. Cement 21.8wt%, Expanding material 8wt%, Diatomaceous earth 21wt%, Kaolin powder 10wt%, Silica powder 20wt%, Nickel powder 2.5wt%, Chromium powder 2.5wt%, Polymer powder (acrylic powder resin) 12wt%, Stearic acid salt (calcium salt) Adhesion strength, water absorption coefficient, length change rate, and lifting phenomenon were tested for the surface protective material composition consisting of 1.5 wt%, 0.5 wt% of a high performance fluidizing agent (melamine type), and 0.2 wt% of a thickener (cellulose). It was compared with the composition ratio of 1. The results are shown in [Table 3].

[표3][Table 3]

Figure 112011057996282-pat00003

Figure 112011057996282-pat00003

실시예 4Example 4

시멘트 22.8wt%, 팽창재 16wt%, 규조토 12wt%, 카올린분말 20wt%, 실리카 분말 20wt%, 니켈분말 2.5wt%, 크롬분말 2.5wt%, 폴리머 분말(아크릴계분말수지) 12wt%, 스테아린산염(칼슘염) 1.5wt%, 고성능 유동화제(멜라민계) 0.5wt%, 증점제(셀룰로즈계) 0.2wt%으로 이루어진 표면보호재 조성물에 대하여 부착강도, 물흡수계수, 길이변화율, 들뜸현상 시험을 하였으며, 이를 실시예 1 의 조성비와 비교하였다. 그 결과는 [표4]와 같다. Cement 22.8wt%, Expanding material 16wt%, Diatomaceous earth 12wt%, Kaolin powder 20wt%, Silica powder 20wt%, Nickel powder 2.5wt%, Chromium powder 2.5wt%, Polymer powder (acrylic powder resin) 12wt%, Stearic acid salt (calcium salt) Adhesion strength, water absorption coefficient, length change rate, and lifting phenomenon were tested for the surface protective material composition consisting of 1.5 wt%, 0.5 wt% of a high performance fluidizing agent (melamine type), and 0.2 wt% of a thickener (cellulose). It was compared with the composition ratio of 1. The results are shown in [Table 4].

[표4]Table 4

Figure 112011057996282-pat00004

Figure 112011057996282-pat00004

실시예 5Example 5

시멘트 25.8wt%, 팽창재 8wt%, 규조토 12wt%, 카올린분말 10wt%, 실리카 분말 25wt%, 니켈분말 2.5wt%, 크롬분말 2.5wt%, 폴리머 분말(아크릴계 분말수지) 12wt%, 스테아린산염(칼슘염) 1.5wt%, 고성능 유동화제(멜라민계) 0.5wt%, 증점제(셀룰로즈계) 0.2wt%으로 이루어진 표면보호재 조성물을 종래의 표면보호재 조성물(A제품-시중에 판매되고 있는 표면보호재로, 시멘트, 모래, EVA 수지가 주성분을 이룸)과 비교하였으며, 그 결과는 [표5]와 같다. Cement 25.8wt%, Expanding material 8wt%, Diatomaceous earth 12wt%, Kaolin powder 10wt%, Silica powder 25wt%, Nickel powder 2.5wt%, Chromium powder 2.5wt%, Polymer powder (acrylic powder resin) 12wt%, Stearic acid salt (calcium salt) ) A surface protective material composition consisting of 1.5 wt%, a high performance fluidizing agent (melamine type) and 0.5 wt% of a thickener (cellulose), is a conventional surface protective material composition (product A-market surface protective material, cement, Sand, EVA resin is the main component) and the results are shown in [Table 5].

[표5][Table 5]

Figure 112011057996282-pat00005

Figure 112011057996282-pat00005

상기 실시예 1 내지 실시예 5 의 결과에서와 같이, 본 발명의 표면보호재 조성물은 부착강도, 물흡수 계수, 습기투과성 시험에 있어서 매우 우수한 효과가 있고, 얇게 시공하는 표면보호재 제품의 단점인 들뜸현상이 발생하지 않음을 알 수 있다. As in the results of Examples 1 to 5, the surface protective material composition of the present invention has a very excellent effect in the adhesion strength, water absorption coefficient, moisture permeability test, the lifting phenomenon that is a disadvantage of the thin surface-protective product It can be seen that this does not occur.

상기 실시예 1 내지 실시예 5 의 시험은 KS F 4716에 규정된 시멘트계 바탕 바름재의 각종 품질시험에 준하여 실험을 하였다.
The test of Examples 1 to 5 was conducted in accordance with various quality tests of the cement-based base coating material prescribed in KS F 4716.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위내에 있게 된다.
The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

(10) : 고정철물 (11) : 고정부
(12) : 하단부 (13) : 상단부
(14) : 격자망 설치부 (20) : 격자망
(21) : 교차부위 (22) : 고정홀
(30) : 표면보호재 조성물 (40) : 세라믹 코팅재
(50) : 작업공구 (100) : 콘크리트 구조물
(110) : 표면보호부위
(10): fixing hardware (11): fixing part
(12): lower part (13): upper part
14: grid mounting portion 20: grid
(21): intersection part (22): fixing hole
(30): Surface protective material composition (40): Ceramic coating material
50: work tool 100: concrete structure
(110): Surface protection part

Claims (10)

보통포틀랜드시멘트 또는 슬라그시멘트 20∼40wt%, 무기계 팽창재 3∼15wt%, 규조토 5∼20wt%, 카올린분말 5∼15wt%, 실리카 분말 20∼35wt%, 니켈크롬분말 2∼8wt%, 폴리머분말 4∼20wt%, 발수재 0.3∼3.0wt%, 고성능 유동화제 0.2∼1.0wt%, 증점제 0.05∼0.8wt%를 포함하되,
상기 니켈크롬분말은 니켈분말과 크롬분말이 1:1의 중량비로 혼합된 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물.
Ordinary portland cement or slag cement 20-40 wt%, inorganic expander 3-15wt%, diatomaceous earth 5-20wt%, kaolin powder 5-15wt%, silica powder 20-35wt%, nickel chromium powder 2-8wt%, polymer powder 4 ~ 20wt%, water repellent 0.3-3.0wt%, high-performance fluidizing agent 0.2-1.0wt%, thickener 0.05-0.8wt%,
The nickel chromium powder is a surface protection material composition of the concrete structure, characterized in that the nickel powder and chromium powder is mixed in a weight ratio of 1: 1.
청구항 1 에 있어서;
상기 규조토는 800℃∼1200℃에서 소성되어 유기물이 제거된 다공구조를 구비하는 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물.
The method of claim 1,
The diatomaceous earth is calcined at 800 ℃ to 1200 ℃ surface protection material composition of a concrete structure, characterized in that it comprises a porous structure from which the organic matter is removed.
청구항 1 에 있어서;
상기 카올린 분말은 카올린 광물을 600℃∼800℃로 열처리를 하여 카올린 내부의 결합수 및 층간수를 제거하여 활성화 시킨 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물.
The method of claim 1,
The kaolin powder is a surface protection material composition of a concrete structure, characterized in that the kaolin mineral is heat-treated at 600 ℃ to 800 ℃ by removing the bound water and interlayer water in the kaolin.
삭제delete 청구항 1 에 있어서;
상기 폴리머분말은 아크릴계, 스티렌계, EVA계, 아크릴-비닐아세테이트계 중에서 선택된 하나 이상의 것이고,
상기 고성능 유동화제는 멜라민계, 나프탈렌계, 카르복실계 고성능 유동화제중에서 하나 이상인 것이며,
상기 증점제는 셀루로즈계 증점제인 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물.
The method of claim 1,
The polymer powder is at least one selected from acryl, styrene, EVA and acryl-vinylacetate,
The high performance fluidizing agent is one or more of melamine-based, naphthalene-based, carboxyl-based high-performance fluidizing agent,
The thickener is a surface protection material composition of a concrete structure, characterized in that the cellulose-based thickener.
청구항 1 에 있어서;
상기 발수재는 스테아린산염인 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물.
The method of claim 1,
The water repellent is a surface protection material composition of the concrete structure, characterized in that the stearic acid salt.
콘크리트 구조물의 열화된 부분을 제거하고, 열화된 부분이 제거된 표면보호부위에 대한 이물질을 제거하는 표면처리단계;
이물질이 제거된 콘크리트 구조물의 표면보호부위에 고정철물을 이용하여 격자망을 고정하는 격자망 설치단계;
격자망이 고정된 콘크리트 구조물의 표면보호부위에 청구항 1,2,3,5,6 중 어느 한 항으로 이루어진 표면보호재 조성물을 도포하는 표면보호단계;
표면보호단계 후 표면을 세라믹 코팅재로 마감처리하는 마감처리단계;를 포함하는 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물을 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법.
A surface treatment step of removing the deteriorated portion of the concrete structure and removing foreign matter on the surface protection portion from which the deteriorated portion is removed;
A grid network installation step of fixing the grid network by using a fixing hardware on the surface protection portion of the concrete structure from which foreign substances have been removed;
A surface protection step of applying a surface protection material composition of any one of claims 1,2,3,5,6 to the surface protection part of the concrete structure to which the grid is fixed;
After finishing the surface protection step to finish the surface with a ceramic coating material; concrete structure neutralization, salt and repair reinforcement method using the surface protection material composition of the concrete structure comprising a.
청구항 7 에 있어서;
상기 격자망 설치단계는 고정철물에 격자망을 끼운 후, 고정철물을 콘크리트 구조물의 표면보호부위에 고정설치하되,
상기 고정철물은 고정부와 하단지지부가 격자망의 사각형상 고정홀을 관통하도록 격자망의 고정홀에 고정철물을 끼운 후, 고정철물을 90°회전시켜 격자망의 고정홀과 고정철물의 하단지지부 및 상단지지부가 서로 엇갈리도록 격자망에 설치되고, 격자망지지부에 격자망이 위치되는 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물을 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법.
The method of claim 7;
In the grid installation step, the grid is fitted to the fixed hardware, the fixed hardware is fixed to the surface protection portion of the concrete structure,
The fixed steel is inserted into the fixing hole of the grid so that the fixing portion and the lower support penetrates the rectangular fixing hole of the grid, and then rotate the fixing hardware by 90 ° to the lower support of the grid and the fixed steel And the upper support is installed on the grid to cross each other, the concrete structure neutralization, salt and repair reinforcement method using the surface protective material composition of the concrete structure, characterized in that the grid is located on the grid support.
청구항 7 에 있어서;
상기 격자망은 유리섬유 또는 탄소섬유로 이루어지고, 격자망의 교차부위에는 고정철물이 삽입관통되는 사각형상의 고정홀이 형성되어 있는 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물을 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법.
The method of claim 7;
The grid is made of glass fiber or carbon fiber, and at the intersection of the grid net, the concrete structure neutralizing and salting using the surface protective material composition of the concrete structure, characterized in that the fixing hole is formed in the rectangular fixing hole is inserted through And reinforcement method.
청구항 7 에 있어서;
상기 고정철물은 격자망의 고정홀을 관통하는 고정부와, 상기 고정부에 수직으로 형성되는 하단지지부와, 상기 하단지지부에 이격되어 형성된 상단지지부와, 상기 상단지지부와 하단지지부 사이에 위치하는 격자망 지지부를 포함하되, 상기 하단지지부와 상단지지부는 사각플레이트 형상을 구비하는 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물을 이용한 콘크리트 구조물 중성화, 염해 및 보수보강공법.
The method of claim 7;
The fixing hardware includes a fixing part penetrating through the fixing hole of the grating network, a lower support part vertically formed on the fixing part, an upper support part spaced apart from the lower support part, and a grating positioned between the upper support part and the lower support part. Including the net support, wherein the lower support and the upper support is a concrete structure neutralization, salt and repair reinforcement method using the surface protection material composition of the concrete structure, characterized in that it has a rectangular plate shape.
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KR101329623B1 (en) 2013-02-08 2013-11-14 하나케이텍(주) Deal with carbon dioxide for plenty of recycling aggregate and environment-friendly block for shore protection binder composition
KR101434523B1 (en) * 2013-11-29 2014-09-05 (주) 규진건설 Seismic Retrofitting of Concrete Structures by using Coating Fiber Mesh Grid and Inorganic Cementitious Matrix Composite
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KR101306182B1 (en) 2013-02-08 2013-09-09 하나케이텍(주) Plenty of recycling aggregate and environment-friendly block for shore protection binder composition
KR101329623B1 (en) 2013-02-08 2013-11-14 하나케이텍(주) Deal with carbon dioxide for plenty of recycling aggregate and environment-friendly block for shore protection binder composition
KR101434523B1 (en) * 2013-11-29 2014-09-05 (주) 규진건설 Seismic Retrofitting of Concrete Structures by using Coating Fiber Mesh Grid and Inorganic Cementitious Matrix Composite
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KR101547882B1 (en) 2015-03-10 2015-08-28 (주) 우리이엔씨 Compositon of organic-inorganic hybrid for suface protection method of concrete structure using the composition
KR101861064B1 (en) * 2017-11-17 2018-05-28 주식회사 한국리페어기술 Mortar composition for cross section ristirations and method for recovering the same thereof
KR102029168B1 (en) 2018-07-03 2019-10-07 하진건설(주) Repairing mortar for concrete structure neutralization deterioration preventing and concrete structure neutralization deterioration preventing method using the same
KR102031582B1 (en) 2019-01-21 2019-10-14 (주)위너스건설 A mortar for biochemical erosion preventing of concrete structure and the biochemical erosion preventing method of concrete structure using the same
KR102058181B1 (en) 2019-05-27 2019-12-23 순경석 Repairing method for cross-section restoration of concrete structures
KR102373902B1 (en) 2021-05-26 2022-03-16 주식회사 한강이앤씨 Concrete mortar for repairing cross-section of concrete structure having sulfate and salt resistance and the method of repairing cross-section of concrete structure using the same
KR102363726B1 (en) 2021-05-27 2022-02-17 주식회사 한강이앤씨 Concrete mortar for repairing cross-section of concrete structure having sulfate resistance and antibacterial function and the method of repairing cross-section of concrete structure using the same
KR102562297B1 (en) 2022-11-15 2023-08-02 세기하이테크건설 주식회사 High-functional organic-inorganic hybrid surface protecting composition having excellent durability comprising elastic polymer-based complex admixture and ceramic-based filler and environmental-friendly surface protection method of concrete and steel structure using the same
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