KR100474665B1 - Section rehabilitaion and repain method using section rehabilitaion and antibiosis mortar of concrete structures - Google Patents
Section rehabilitaion and repain method using section rehabilitaion and antibiosis mortar of concrete structures Download PDFInfo
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- KR100474665B1 KR100474665B1 KR1020040034527A KR20040034527A KR100474665B1 KR 100474665 B1 KR100474665 B1 KR 100474665B1 KR 1020040034527 A KR1020040034527 A KR 1020040034527A KR 20040034527 A KR20040034527 A KR 20040034527A KR 100474665 B1 KR100474665 B1 KR 100474665B1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
Abstract
Description
본 발명은 콘크리트 구조물의 단면복구용 항균성 모르타르 조성물과 이를 이용한 단면복구공법에 관한 것으로, 염화물의 침입, 콘크리트의 중성화 및 화학적부식에 의한 발생된 열화현상을 표면강화재, 항균성을 구비하는 단면복구용 모르타르, 표면보호재, 코트재를 통해 피해를 입은 철근 콘크리트 구조물의 단면을 보수하는 공법에 관한 것이다. The present invention relates to an antimicrobial mortar composition for cross-sectional recovery of a concrete structure and a cross-sectional recovery method using the same. The present invention relates to a surface reinforcing material and anti-bacterial mortar for degradation caused by chloride intrusion, neutralization of concrete and chemical corrosion. It is about a method of repairing the cross section of a reinforced concrete structure that has been damaged through surface protection and coating materials.
콘크리트를 사용한 토목시설물은 국가의 기반 시설로서, 백년대계를 위한 국가 경제에 매우 중요한 역할을 수행하고 있다. 이러한 콘크리트 구조물은 반영구적으로 100 년 이상의 수명을 구비하고 있으나, 날로 심각해져가는 대기환경오염과 특히 염해, 화학적부식 등으로 인한 콘크리트의 붓식을 초래하고 이로 인하여 철근 콘크리트 주 재료인 철근의 부식 하여 구조물의 수명을 현저히 단축되는 현상이 발생되고 있다. Civil engineering facilities using concrete are a 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 pollution due to air pollution, especially salt, chemical corrosion, etc., which leads to corrosion of reinforcing steel, the main material of reinforced concrete. The phenomenon of remarkably shortening has occurred.
콘크리트는 시멘트의 수화반응으로 인하여 생성된 Ca(OH)에 의해 강알카리성(pH 12∼13)을 가지고 있기 때문에 코크리트에 매립되어 있는 철근은 일반적으로 부식되지 않는다. 그러나 공기중의 탄산가스의 작용을 장기적으로 받게되면 콘크리트중의 수산화칼슘이 서서히 타산칼슘으로 변하여 pH가 0.8∼10 정도로 낮아져 콘크리트가 알카리성을 상실해 가는 중성화가 발생된다. Since concrete has strong alkalinity (pH 12-13) by Ca (OH) produced by the hydration of cement, reinforcing bars embedded in coke are not generally corroded. However, when the action of carbon dioxide in the air is prolonged, calcium hydroxide in the concrete gradually changes to calcium nitrate, and the pH is lowered to about 0.8 to 10, causing the concrete to lose its alkalinity.
이와 같은 중성화는 콘크리트 표면에서 내부로 진해하며 콘크리트는 탄산가스와 반응한 중량만큼 무거워지고 치밀해진다. 콘크리트가 중성화되고 물과 공기가 침투하면 철군이 녹쓸고 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. If the concrete is neutralized and water and air infiltrate, the steel group will rust and the volume of the rebar will expand, causing cracks in the concrete, resulting in loss of strength and durability of the structure.
또한 시멘트의 주요구성 성분인 3CaO·SiO2, 2CaO·SiO2는 다음 식과 같이 물과 수화 반응하여 규산칼슘 수화물과 다량의 수산화칼슘을 생성하며, 이것을 화학식으로 표기하면 다음과 같다.In addition, 3CaO · SiO 2 and 2CaO · SiO 2, which are the major constituents of cement, are hydrated with water to produce calcium silicate hydrate and a large amount of calcium hydroxide as shown in the following formula.
2(2CaO·SiO2) + 3H2O → 3CaO·2SiO2·3H2O + Ca(OH)2 2 (2CaOSiO 2 ) + 3H 2 O → 3CaO · 2SiO 2 3H 2 O + Ca (OH) 2
따라서 콘크리트내의 연속된 모세관 공극내에는 수산화칼슘의 포화수용액인 pH 12~13의 알칼리용액으로 충만되어 있다. 이와 같은 알칼리성 환경에서는 철근표면은 얇은 부동태피막(두께 20~60Å, γ- Fe2O3·nH2O)이라고 불리워지는 보호피막으로 덮여있어 부식으로부터 보호되어 있다. 그러나 어떤 조건에서도 철근은 콘크리트 중에서 급속히 부식한다.Therefore, the continuous capillary pores in concrete are filled with alkaline solutions of pH 12-13, which are saturated aqueous solutions of calcium hydroxide. In such an alkaline environment, the rebar surface is covered with a protective film called a thin passivation film (thickness 20-60Å, γ-Fe 2 O 3 · nH 2 O), which is protected from corrosion. However, under any conditions, the reinforcing bars quickly corrode in concrete.
그 대표적인 경우는 염화물의 침입에 의한 경우와 콘크리트의 중성화 현상에 의한 알칼리성의 저하이다. 염소이온은 위에서 기술한 부동태피막을 파괴시켜 부식을 일으킨다. 콘크리트중의 철근이 부식하면 부식생성물인 녹이 발생하여 원래 체적의 2~3배에 달하게 되어 그 팽창압에 의해 피복 콘크리트에 균열을 발생시키며, 표면콘크리트의 박리, 탈락, 철근과의 부착성저하, 강도저하를 일으키게 된다. 부식이란 일종의 전기화학적인 작용으로 철이 이온화하는 아노드반응(산화)과 산소가 환원하는 캐소드 반응이 다음 식과 같이 전행하여 부식전지가 형성된다. Representative cases are the decrease in alkalinity due to chloride intrusion and the neutralization of concrete. Chlorine ions cause corrosion by destroying the passivation film described above. When the steel reinforces in concrete, rust, a corrosion product, is generated, and reaches 2 ~ 3 times of the original volume, causing cracks in the coated concrete due to the expansion pressure, peeling, dropping of the surface concrete, deterioration of adhesion to the steel, It will cause a decrease in strength. Corrosion is a kind of electrochemical action. The anode reaction (oxidation) in which iron is ionized and the cathode reaction in which oxygen is reduced proceeds as shown in the following formula to form a corrosion cell.
아노드 반응 Fe → Fe2+ + 2e- The anode reaction Fe → Fe2 + + 2e -
캐소드 반응 O2 + H2O + 4e- → 4OH- The cathode reaction O 2 + H 2 O + 4e - → 4OH -
부식의 전 반응은 양 반응을 합한 반응이 되며 다음 식과 같이 수산화 제1철(Fe(OH)2)이 철표면에 석출한다.The pre-corrosion reaction is a reaction of both reactions. Ferrous hydroxide (Fe (OH) 2 ) is deposited on the iron surface as shown in the following equation.
2Fe + O2 +H2O → 2Fe2+ + 4OH- → 2Fe(OH)2 2Fe + O 2 + H 2 O → 2Fe 2+ + 4OH - → 2Fe (OH) 2
이 화합물은 용존산소에 의해 산화되어 수산화 제2철이 된다. 더욱이 이 화합물은 물을 잃고 수화산화물인 FeOOH(붉은녹) 혹은 Fe2O3 (검은녹)이 되어 철표면에 녹을 형성한다.This compound is oxidized with dissolved oxygen to form ferric hydroxide. Furthermore, the compound loses water and becomes hydrated FeOOH (red rust) or Fe 2 O 3 (black rust), forming rust on the iron surface.
또한 산소공급이 되지 않거나 침전물과 콘크리트에 부착되는 경우 등에 의하여 혐기상태로 되며 하도수 및 폐수 중에 포함되어 있는 황산염의 대부분이 황산염환원세균에 의하여 황화수소를 발생된다. 아래식은 황산염환원 세균이 발생되는 식이다.In addition, it becomes anaerobic due to lack of oxygen supply or adherence to sediments and concrete, and hydrogen sulfide is generated by sulfate reducing bacteria in the majority of sulfates contained in sewage and wastewater. The following equation is used to generate sulfate reducing bacteria.
SO4 -2 ＋ 2C ＋ 2H2O → H2S ＋ 2HCO3 - SO 4 -2 + 2C + 2H 2 O → H 2 S + 2HCO 3 -
하수 및 폐수 중에 생성된 황화수소는 산성영역에서 분자상태의 황화수소로 되어 하·폐수 흐름에 의하여 공기중에 확산된 황화수소는 콘크리트상부에 결로 및 비말수에 의해 용해되며, 용해된 황화수소는 황산화세균의 작용에 의하여 황산을 생성한다.Hydrogen sulphide produced in sewage and wastewater becomes molecular hydrogen sulphide in acidic region, and hydrogen sulphide diffused into the air by sewage and wastewater flow is dissolved by condensation and splash water on the upper part of concrete. Produces sulfuric acid.
H2S ＋ 2O → H2SO4 H 2 S + 2 O → H 2 SO 4
콘크리트표면에 생성된 황산은 콘크리트 수화물과 반응하여 황산칼슘을 생성하고 이수석고가 시멘트중의 3CaO·Al2O3 와 반응하면 에트린자이트가 생성되면서 콘크리트가 팽창, 균열, 박리 등의 부식현상을 일으킨다.Sulfuric acid produced on the concrete surface reacts with concrete hydrate to produce calcium sulfate. When dihydrate gypsum reacts with 3CaO · Al 2 O 3 in cement, ethrinite is produced, which causes corrosion of concrete such as expansion, cracking and peeling. Cause
따라서, 기존 철근콘크리트 구조물의 염해, 중성화 및 화학적부식에 대한 방지 기술로서는 표면탈락 및 박리 부분에는 일반적인 신구접착제 도포 후 모르타르 도포하고 에폭시 코팅제를 도포하여 보수를 하는 것이 일반적인 보수 방법이다. 그러나 일반적인 신구접착제는 콘크리트 표면에 이질층을 형성하며, 이로 인하여 모체와 모르타르가 재 탈락 되는 원인이 되었다. 또한 단면복구 모르타르는 단면복구 기능만 부여하다. 기존의 방수 및 방식 공법은 도장재 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.Therefore, as a technique for preventing salt, neutralization, and chemical corrosion of the existing reinforced concrete structures, a general repair method is to repair the surface by removing mortar and applying an epoxy coating agent to a surface peeling and peeling part after applying a general new adhesive agent. However, typical new adhesives form a heterogeneous layer on the concrete surface, which causes the mother and mortar to fall off again. In addition, the cross-sectional recovery mortar gives only the cross-sectional recovery function. Conventional waterproofing and anticorrosive methods are mainly organic based on epoxy and urethane coating materials.However, after application, the color changes in brittle fracture and ultraviolet rays and is not breathable. I had a problem falling.
본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 그 목적은 상기와 같이 중성화 진행, 염화물 침투, 화학적 부식 및 동해로 인하여 구조물에 피해가 있을 경우, 이를 신속하게 재생할 수 있는 단면복구용 모르타르 조성물 및 그를 이용한 보수공법을 제공하는 것이다. The present invention has been made in consideration of the above problems, and its object is to provide a cross-sectional recovery mortar composition that can be quickly recovered when there is damage to the structure due to the neutralization progress, chloride penetration, chemical corrosion and the East Sea as described above and It is to provide a repair method using him.
본 발명의 또 다른 목적은 기존 콘크리트 구조물의 열화부분 제거한 후 콘크리트 구조체 표면에 발수성 및 표면강화 성능을 부여하여 열화 진행사항을 억제하는 것이다. Another object of the present invention is to remove the deteriorated portion of the existing concrete structure to impart water repellency and surface reinforcement performance to the surface of the concrete structure to suppress the progress of deterioration.
본 발명의 또 다른 목적은 항균성기능을 부가하여 콘크리트 표면에 공생하는 곰팡이, 황산화염, 박테리아 세균 등의 생성 및 활성을 억제하며, 기존의 코팅제가 파괴 되어도 항균성 단면복구 모르타르가 화학적 부식에 저항하는 기능을 확보 하는 것이다. Another object of the present invention is to suppress the formation and activity of fungi, sulfates, bacterial bacteria, etc. symbiotic on the concrete surface by adding an antimicrobial function, and the antimicrobial cross-sectional recovery mortar resists chemical corrosion even if the existing coating agent is destroyed To secure.
본 발명은 콘크리트 건축 구조물의 단면복구용 모르터르 조성물에 있어서, 단면복구용 모르터르 조성물은 일반시멘트 슬라그시멘트 성분 30 ~ 55wt%, 무기계팽창재 5~15wt%, 포졸란물질 5~30wt%, 항균성물질 5~15wt%, 고성능 유동화제 0.5~1.5wt%, 화이버 0.5~2.0wt%, 입도조정 규사 30~50wt% 으로 이루어져 있다.In the present invention, in the mortar composition for recovering the cross-section of the concrete building structure, the mortar composition for the cross-sectional recovery is 30 to 55wt% of the general cement slag cement components, 5 to 15wt% of inorganic expandable material, 5 to 30wt% of pozzolan material, antimicrobial material It consists of 5 ~ 15wt%, 0.5 ~ 1.5wt% of high performance fluidizer, 0.5 ~ 2.0wt% of fiber, and 30 ~ 50wt% of particle size adjusting silica.
상기 무기계 팽창재는 시멘트의 수축균열을 방지하기 위하여 첨가하는 것으로 5% 미만인 경우에는 시멘트의 수축에 의한 균열발생을 감소시키는데 효과가 없고, 15% 이상인 경우에는 팽창에 의한 부풀음이나 팽창균열 등을 발생시키게 된다. 무기계 팽창재는 CSA(Calcium Sulfo Aluminate)계 광물을 주성분으로 하며, 물과 반응하면 팽창성 물질인 에트링자이트(ettringgite)를 생성시켜 시멘트 경화체의 건조수축을 줄이고 균열 발생을 감소시키게 된다. The inorganic expandable material is added to prevent shrinkage cracking of the cement. When the inorganic expansion material is less than 5%, it is ineffective in reducing the occurrence of cracking due to shrinkage of the cement, and in the case of 15% or more, it causes swelling or expansion cracking due to expansion. do. Inorganic expander is composed mainly of Calcium Sulfo Aluminate (CSA) -based minerals, and when reacted with water to produce an expandable material ettringgite to reduce the dry shrinkage of the hardened cement and reduce the occurrence of cracks.
상기 포졸란 물질은 장기적인 내구성을 향상시키기 위하여 사용되는 것으로, 플라이애쉬나 슬라그 분말을 사용하며, 30% 이상을 사용할 경우에는 초기 압축강도의 감소를 유발시키므로, 30% 이하로 제한하여 사용한다. The pozzolanic material is used to improve the long-term durability, using fly ash or slag powder, when using more than 30% causes a decrease in the initial compressive strength, it is limited to 30% or less.
상기 항균성 물질은 시멘트 몰탈에 항균성을 부여하기 위하여 첨가하는 것으로, Ag, Cu, Ni, Zn, Ge 등의 성분이 배합된 물질이며, 1종류 이상의 성분을 혼합하여 사용한다. 상기 항균성 물질의 혼합량이 3% 미만인 경우에는 항균성에 효과가 극히 미미하였고 15% 이상인 경우에는 유동성의 저하 및 압축강도, 부착강도 등의 제반 물성의 감소가 크게 나타났다.The antimicrobial substance is added to impart antimicrobial properties to cement mortar, and is a substance in which components such as Ag, Cu, Ni, Zn, and Ge are blended, and one or more kinds of components are mixed and used. When the amount of the antimicrobial compound was less than 3%, the effect on the antimicrobial was extremely insignificant, and when the amount of the antimicrobial material was 15% or more, the decrease in fluidity and the reduction of physical properties such as compressive strength and adhesion strength were large.
상기 화이버는 셀루로스 또는 PP 섬유를 사용한다.The fibers use cellulose or PP fibers.
고성능 유동화제는 작업성을 부여하기 위하여 첨가하는 것으로, 멜라민계, 나프탈렌계, 카르복실계 고성능 유동화제를 사용한다. 또한, 상기 고성능 유동화제는 0.3% 이하에서는 유동성 증진효과가 없었고, 1.5% 이상을 사용할 경우에는 유동성의 증진에 큰 효과가 없으며, 또한 고가의 물질로서 많은 양을 사용할 때에는 경제성이 크게 감소되므로 함량을 제한하였다.The high performance fluidizing agent is added to impart workability. Melamine-based, naphthalene-based or carboxyl-based high-performance fluidizing agents are used. In addition, the high performance fluidizing agent did not have a fluidity enhancing effect at less than 0.3%, and when using more than 1.5% has no significant effect on the enhancement of fluidity, and also because the economic efficiency is greatly reduced when using a large amount as an expensive material, Limited.
실시예 1Example 1
시멘트 35wt%, 무기계 팽창재 8wt%, 포졸라물질 13wt%, 항균성 물질 7wt%, 고성능 유동화제 1.0wt%, 화이버 1.0wt%, 입도조정규사 35wt%로 이루어진 단면복구용 조성물에 대하여 부착강도, 압축강도, 휨강도, 길이변화율, 응결시간, 항곰팡이시험을 하였으며, 그 결과는 [표 1]과 같다. Adhesion strength and compressive strength for the cross-sectional recovery composition consisting of cement 35wt%, inorganic expander 8wt%, pozzola material 13wt%, antimicrobial material 7wt%, high performance fluidizing agent 1.0wt%, fiber 1.0wt%, particle size adjustment silica 35wt% , Flexural strength, length change rate, setting time, and antifungal test were performed. The results are shown in [Table 1].
[표 1]TABLE 1
실시예 2Example 2
시멘트 35wt%, 무기계 팽창재 8wt%, 포졸라물질 13wt%, 항균성 물질 16wt%, 고성능 유동화제 1.0wt%, 화이버 1.0wt%, 입도조정규사 35wt%로 이루어진 단면복구용 조성물에 대하여 부착강도, 압축강도, 항곰팡이시험을 하였으며, 이를 실시예 1 의 조성비와 비교하였다. 그 결과는 [표 2]와 같다. Adhesion strength and compressive strength for the cross-sectional recovery composition consisting of cement 35wt%, inorganic expander 8wt%, pozzola material 13wt%, antibacterial material 16wt%, high performance fluidizing agent 1.0wt%, fiber 1.0wt%, particle size adjusting silica , An antifungal test was carried out, which was compared with the composition of Example 1. The results are shown in [Table 2].
[표 2]TABLE 2
실시예 3Example 3
시멘트 35wt%, 무기계 팽창재 16wt%, 포졸라물질 13wt%, 항균성 물질 16wt%, 고성능 유동화제 1.0wt%, 화이버 1.0wt%, 입도조정규사 35wt%로 이루어진 단면복구용 조성물에 대하여 부착강도, 압축강도, 항곰팡이시험을 하였으며, 이를 실시예 1 의 조성비와 비교하였다. 그 결과는 [표 3]과 같다. Adhesion strength and compressive strength for the cross-sectional recovery composition consisting of cement 35wt%, inorganic expander 16wt%, pozzola material 13wt%, antimicrobial material 16wt%, high performance fluidizing agent 1.0wt%, fiber 1.0wt%, particle size adjustment silica 35wt% , An antifungal test was carried out, which was compared with the composition of Example 1. The results are shown in [Table 3].
[표 3]TABLE 3
실시예 4Example 4
시멘트 35wt%, 무기계 팽창재 8wt%, 포졸라물질 13wt%, 항균성 물질 7wt%, 고성능 유동화제 1.0wt%, 화이버 1.0wt%, 입도조정규사 35wt%로 이루어진 단면복구용 조성물을 종래의 단면복구용 조성물(A제품)과 비교하였으며, 그 결과는 [표 4]과 같다. The conventional single-sided recovery composition is composed of 35wt% of cement, 8wt% of inorganic expander, 13wt% of pozzolanic material, 7wt% of antimicrobial material, 1.0wt% of high performance fluidizing agent, 1.0wt% of fiber, and 35wt% of particle size adjustment silica. It was compared with (A product), the results are shown in [Table 4].
[표 4]TABLE 4
단면복구용 모르타르가 구비하여야 할 최소한의 물성값은 압축강도 204㎏f/㎠ 이상, 부착강도 10㎏f/㎠ 이상, 길이변화율 0.15% 이하의 제품을 사용하도록 일본의 품질기준 규격에서는 권장을 하고 있음을 감안할 경우, 상기 실시예 1 내지 4 에서와 같이, 본 발명의 단면복구용 조성물은 종래의 제품에 비해 부착강도, 압축강도, 길이변화율, 항곰팡이 시험에 있어서 매우 우수한 효과가 있음을 알 수 있다. The minimum physical property values required for the mortar for sectional recovery are recommended by Japanese quality standards to use products with compressive strength of 204kgf / ㎠ or more, adhesion strength of 10㎏f / ㎠ or more, and length change rate of 0.15% or less. In consideration of this, as in Examples 1 to 4, it can be seen that the composition for cross-sectional recovery of the present invention has a very excellent effect in adhesion strength, compressive strength, length change rate, anti-mildew test compared to the conventional product. .
또한, 상기 실시예 1 내지 4 의 시험은 KS에 규정된 시멘트의 각종 품질시험에 준하여 실험을 하였으며, 부착강도 시험은 KS F 4918-98, 압축강도 시험은 KS L 5105-97, 길이변화율 시험은 KS F 2424-97, 항곰팡이 시험은 ASTM G-21의 시험방법을 적용하였다. In addition, the test of Examples 1 to 4 was carried out in accordance with various quality tests of cement prescribed in KS, adhesion strength test is KS F 4918-98, compressive strength test is KS L 5105-97, length change rate test KS F 2424-97, antifungal test was applied to the test method of ASTM G-21.
이하 상기와 같이 조성물 본 발명의 단면복구조성물을 이용한 단면보수 공법을 설명하면 다음과 같다. Hereinafter, the cross-sectional repair method using the cross-sectional structure of the present invention as described above is as follows.
도 1 은 본 발명에 따른 열화부 치핑 후 표면 세정 예시도를, 도 2 은 본 발명에 따른 표면강화제 도포 예시도를, 도 3 은 본 발명에 따른 항균모르타르 도포후 표면보호재 도포 예시도를, 도 4 은 본 발명에 따른 표면 코팅재 도포 예시도를 도시한 것으로, 본 발명은 콘크리트 구조물의 열화된 부분을 제거하고, 콘크리트 구조물에 대한 이물질을 제거하는 표면처리단계(S100), 상기 표면처리된 콘크리트 구조물의 이물질을 고압세정수에 의해 제거하는 이물질 및 열화부 제거단계(S200), 상기 이물질이 제거된 콘크리트 구조물에 표면강화재 원액을 도포하는 표면강화재 도포단계(S300), 상기 표면강화재 도포후 단면복구용 모르타르 조성물을 단면복구재 도포단계(S400), 단면복구용 모르타르 조성물 도포후 표면보호재 도포단계(S500), 상기 표면보호재 도포후 세라믹 코팅재로 마감처리하는 마감처리단계(S600)으로 이루어져 있다.1 is an exemplary view of the surface cleaning after chipping deterioration according to the present invention, Figure 2 is an illustration of the surface reinforcing agent application according to the present invention, Figure 3 is an illustration of the application of the surface protective material after the antimicrobial mortar coating according to the present invention, 4 shows an exemplary view of coating the surface coating material according to the present invention, the present invention removes the deteriorated portion of the concrete structure, the surface treatment step (S100) to remove the foreign matter on the concrete structure, the surface-treated concrete structure Remove foreign substances and deterioration part to remove the foreign substances by the high-pressure wash water (S200), the surface reinforcing agent coating step of applying the surface reinforcement solution to the concrete structure from which the foreign substances are removed (S300), for the recovery of the cross-section after applying the surface reinforcement After applying the mortar composition to the cross-sectional recovery material (S400), after applying the mortar composition for the surface recovery material (S500), after applying the surface protective material It consists of the finishing step of finishing a ceramic coating (S600).
상기 표면처리단계(S100)는 염해, 중성화(탄산화) 및 화학적 부식 등과 같은 노후화 현상에 의해 발생된 표면콘크리트에서의 피복재 탈락, 조골재 노출, 물곰보 집중, 녹물오염, 들뜸부위 및 부식을 제거하는 것으로, 열화된 콘크리트 표면을 그라인더등의 공구를 이용하여 완전 제거한다. The surface treatment step (S100) is to remove the coating material from the surface concrete caused by aging phenomena such as salting, neutralization (carbonation) and chemical corrosion, exposure to coarse aggregates, concentration of water droplets, rust contamination, lifting and corrosion , Completely remove the deteriorated concrete surface using a tool such as grinder.
상기 이물질 및 열화부 제거단계(S200)는 치핑된 구조물의 표면을 100~150㎏/㎡ 의 고압세정기를 사용하여 이물질을 완전히 제거한다.The debris and deterioration unit removal step (S200) is to completely remove the debris using a high pressure cleaner of 100 ~ 150kg / ㎡ the surface of the chipped structure.
상기 표면강화재 도포단계(S300)는 로울러나 도료작업용 붓 또는 에어스프레이건 등을 사용하여 원액 그대로 0.32㎏f/㎠ 함침시켜 균일하게 도포 한다. 상기 표면강화재는 침투성 계면활성제, 반응성 실리카, 실리카계 발수제를 주성분으로 하는 통상의 표면강화재를 사용한다. The surface reinforcing material coating step (S300) is uniformly applied by impregnating 0.32kgf / ㎠ as the raw liquid using a roller or a paint brush or an air spray gun. The surface reinforcing material uses a conventional surface reinforcing material mainly composed of a permeable surfactant, a reactive silica, and a silica-based water repellent.
상기 단면 복구 모르타르 도포 단계(S400)는 일반시멘트 슬라그시멘트 성분 30 ~ 55%, 무기계팽창재 5~15%, 포졸란물질 5~30%, 항균성물질 5~15%, 고성능 유동화제 0.5~1.5%, 화이버 0.5~2.0%, 입도조정 규사 30~50% 로 이루어진 단면복구용 조성물을 이용하는 것으로, 상기 단면복구용 조성물을 손미장 등으로 1회 1.5㎝정도 도포하며 3㎝도포시(3㎝ 도포시 66.2㎏/㎡) 2회에 걸처 도포 한다.The cross-sectional recovery mortar coating step (S400) is a general cement slag cement component 30 ~ 55%, inorganic expandable material 5 ~ 15%, pozzolanic material 5 ~ 30%, antibacterial material 5 ~ 15%, high performance fluidizing agent 0.5 ~ 1.5%, By using a single-sided recovery composition composed of 0.5 to 2.0% of fiber and 30 to 50% of particle size-adjusted silica sand, apply the single-sided recovery composition about 1.5cm once with hand-dressing, etc. ㎏ / ㎡) Apply it twice.
상기 표면보호재 도포단계(S500)는 손미장 등을 사용 하며 1회 1.5㎜(2.2㎏/㎡)정도 도포 한다. 상기 표면보호재는 시멘트, 규사, Acryl base polymer, 계면활성제 등으로 이루어진 통상의 표면보호재를 사용할 수 있다. The surface protective material coating step (S500) is used for hand polishing and the like once 1.5㎜ (2.2㎏ / ㎡) is applied. The surface protective material may be a conventional surface protective material consisting of cement, silica sand, Acryl base polymer, surfactants and the like.
상기 표면 코팅재 도포단계(S600)는 로울러나 도료작업용 붓, 에어스프레이건 등을 사용하여 세라믹 코팅재를 원액 그대로 0.3㎜(0.46㎏/㎡) 함침시켜 균일하게 도포한다. 상기 표면코팅재는 Acryl base polymer 와 다공성물질로 구성되어 있다. The surface coating material applying step (S600) is uniformly applied by impregnating 0.3 mm (0.46 kg / m 2) of the ceramic coating material as it is using a roller, a paint brush, an air spray gun, or the like. The surface coating material is composed of Acryl base polymer and a porous material.
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 기록의 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 record.
이와 같이 본 발명은 일반시멘트 슬라그시멘트 성분 30 ~ 55%, 무기계팽창재 5~15%, 포졸란물질 5~30%, 항균성물질 5~15%, 고성능 유동화제 0.5~1.5%, 화이버 0.5~2.0%, 입도조정 규사 30~50% 로 조성된 단면복구용 조성물을 도포하도록 되어 있어, 중성화, 염해, 동해 및 화학적부식의 열화를 받아 콘크리트 구조물에 손상이 있을 경우 및 손상이 예측되는 구조물을 원상태로 신속하게 재생시킨다. Thus, the present invention is a general cement slag cement component 30 ~ 55%, inorganic expandable material 5 ~ 15%, pozzolanic material 5 ~ 30%, antibacterial material 5 ~ 15%, high performance fluidizing agent 0.5 ~ 1.5%, fiber 0.5 ~ 2.0% It is designed to apply the composition for recovering the cross-section made up of 30 ~ 50% of the size-adjusted silica sand, so that if the concrete structure is damaged due to the deterioration of neutralization, salt damage, east sea and chemical corrosion, and the structure that is expected to be damaged quickly Play it back.
또한, 본 발명은 항균성기능이 부가되어 있어, 콘크리트 표면에 공생하는 곰팡이, 황산화염, 박테리아 세균 등의 생성 및 활성을 억제하는 효과가 있다.In addition, the present invention is added to the antimicrobial function, there is an effect of suppressing the production and activity of symbiotic fungi, sulfates, bacterial bacteria on the concrete surface.
또한, 본 발명은 주 재료가 무기질계로 구성되어 있어, 각각의 공정 표면부위에서 부착성을 향상 시켰으며 보수재료의 문제점이 되는 통기성 문제를 확보할 수 있는 등 많은 효과가 있다. In addition, the present invention has a number of effects, such as the main material is composed of an inorganic system, to improve the adhesion at each process surface portion and to ensure the breathability problem that is a problem of the repair material.
도 1 은 본 발명에 따른 열화부 치핑 후 표면 세정 예시도1 is an exemplary view of surface cleaning after chipping deterioration according to the present invention
도 2 은 본 발명에 따른 표면강화제 도포 예시도2 is an exemplary view of applying a surface hardener according to the present invention
도 3 은 본 발명에 따른 항균모르타르 도포후 표면보호재 도포 예시도Figure 3 is an exemplary view of the application of the surface protective material after applying the antimicrobial mortar according to the present invention
도 4 은 본 발명에 따른 표면 코팅재 도포 예시도Figure 4 is an exemplary view of the surface coating material applied according to the present invention
도 5 는 본 발명에 따른 시공블록도5 is a construction block diagram according to the present invention
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
(1) : 로울러 (1): Roller
(10) : 열화부위 치핑 후 구조체 상태 (20) : 치핑 후 고압세정 부위 (10): Structure state after chipping deterioration site (20): High pressure cleaning site after chipping
(30) : 표면강화재 (40) : 항균성 모르타르 (30): surface reinforcing material (40): antimicrobial mortar
(50) : 표면보호재 (60) : 표면 코팅재 (50): surface protective material (60): surface coating material
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100625411B1 (en) * | 2006-02-23 | 2006-09-15 | (유)리페어이앤씨 | Reinforcing method for concrete structures using ductile and anti-biotic compositions for face restoration together with glass fiber bar |
| KR100773743B1 (en) | 2007-05-09 | 2007-11-09 | 성지씨엔지주식회사 | Recipe of corrosion prevent repair mortar |
| KR100787818B1 (en) | 2006-08-05 | 2007-12-21 | 김기태 | The outer wall repair method of brick building using ceramics coat |
| KR100921448B1 (en) | 2009-04-23 | 2009-10-13 | (주)국민산업 | Section repair in the degradation part and means of reinforcement work of reinforced concrete structure |
| KR100940937B1 (en) * | 2009-08-31 | 2010-02-08 | (주)우암건설 | Concrete structure repairing method |
| KR101172807B1 (en) | 2009-04-20 | 2012-08-09 | (주)안풍건설 | Repairing method of concrete structure |
| KR101172808B1 (en) * | 2009-04-20 | 2012-08-09 | (주)안풍건설 | Repairing method of concrete structure using fibersheet and pushpin |
| KR102065674B1 (en) | 2019-06-28 | 2020-01-14 | 우리건설 주식회사 | Mortar composition for preventing deterioration and repairing of concrete structure and repairing method using the same |
| KR102200657B1 (en) * | 2020-04-13 | 2021-01-12 | 주식회사 한국리페어기술 | Section recovery composites for concrete constructions, and section recovery method of the concrete construction for preventing neutralization and corrosision caused by salts and chemicals using the same |
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2004
- 2004-05-15 KR KR1020040034527A patent/KR100474665B1/en active IP Right Grant
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100625411B1 (en) * | 2006-02-23 | 2006-09-15 | (유)리페어이앤씨 | Reinforcing method for concrete structures using ductile and anti-biotic compositions for face restoration together with glass fiber bar |
| KR100787818B1 (en) | 2006-08-05 | 2007-12-21 | 김기태 | The outer wall repair method of brick building using ceramics coat |
| KR100773743B1 (en) | 2007-05-09 | 2007-11-09 | 성지씨엔지주식회사 | Recipe of corrosion prevent repair mortar |
| KR101172807B1 (en) | 2009-04-20 | 2012-08-09 | (주)안풍건설 | Repairing method of concrete structure |
| KR101172808B1 (en) * | 2009-04-20 | 2012-08-09 | (주)안풍건설 | Repairing method of concrete structure using fibersheet and pushpin |
| KR100921448B1 (en) | 2009-04-23 | 2009-10-13 | (주)국민산업 | Section repair in the degradation part and means of reinforcement work of reinforced concrete structure |
| KR100940937B1 (en) * | 2009-08-31 | 2010-02-08 | (주)우암건설 | Concrete structure repairing method |
| KR102065674B1 (en) | 2019-06-28 | 2020-01-14 | 우리건설 주식회사 | Mortar composition for preventing deterioration and repairing of concrete structure and repairing method using the same |
| KR102200657B1 (en) * | 2020-04-13 | 2021-01-12 | 주식회사 한국리페어기술 | Section recovery composites for concrete constructions, and section recovery method of the concrete construction for preventing neutralization and corrosision caused by salts and chemicals using the same |
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