KR102336667B1 - Concrete repair composition using microbial agent - Google Patents
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Abstract
본 발명은 콘크리트 구조물의 균열 보수를 위해 사용되는 미생물제제를 이용한 콘크리트 보수 조성물에 관한 것으로, 구체적으로 본 발명은, 아크릴 에멀젼, 증점제, 소포제, 유동화제, 경화제, 섬유분말을 포함하는 혼화제와, 알루미나 시멘트 포틀랜드 시멘트, 탄산칼슘이 1~1.2 : 1~1.2 : 1~1.2의 중량비로 혼합된 무기충전제, 액상 규산염, 나노실리카 50~95: 5~50중량비로 혼합된 무기질 바인더, 실란커플링제, 미생물제제 및 방청제를 더 포함하는 것을 특징으로 한다.
상기 본 발명의 콘크리트 보수 조성물에 따르면 콘크리트의 강도, 경도 및 내구성을 향상 된 것으로 콘크리트 구조물의 수명을 연장하는 효과가 있다.The present invention relates to a concrete repair composition using a microbial agent used to repair cracks in concrete structures. Specifically, the present invention relates to an admixture comprising an acrylic emulsion, a thickener, an antifoaming agent, a fluidizing agent, a hardener, and a fiber powder, and alumina Cement Portland cement, calcium carbonate 1-1.2: 1-1.2: inorganic filler mixed in a weight ratio of 1-1.2, liquid silicate, nano-silica 50-95: inorganic binder mixed in a weight ratio of 5-50, silane coupling agent, microorganism It is characterized in that it further comprises an agent and a rust preventive agent.
According to the concrete repair composition of the present invention, the strength, hardness and durability of concrete are improved, and thus the lifespan of the concrete structure is extended.
Description
본 발명은, 미생물제제를 이용한 콘크리트 보수 조성물에 관한 것이다. The present invention relates to a concrete repair composition using a microbial agent.
콘크리트 구조물은 우수한 내구성으로 인해 반영구적 구조물의 건설 재료로 널리 사용되고 있다. 그러나 다양한 원인에 의해서 크고 작은 균열이 발생하기도 하며, 특히 구조물이 해양 환경에 오랜 기간 노출될 경우 해수의 작용에 의하여 콘크리트가 침식되고 철근이 부식을 일으키며 체적 팽창에 의해 콘크리트가 균열 및 박리를 일으킴으로써 콘크리트 구조물의 성능을 저하시킨다. 특히, 겨울철에는 콘크리트가 동결 및 융해 작용으로 인해 콘크리트의 파손이 발생하기도 하고, 자동차의 배기가스에 오랜 시간 노출될 경우 콘크리트의 중성화 현상이 발생하게 됨으로써 콘크리트의 강도가 감소하여 쉽게 파괴 되며 파괴된 콘크리트 구조물 내부에 사용된 철근이 외부로 노출됨으로써 공기와 물에 부식을 일으킴으로써 구조물의 수명을 단축시킨다.Concrete structures are widely used as construction materials for semi-permanent structures due to their excellent durability. However, large and small cracks may occur due to various causes. In particular, when a structure is exposed to the marine environment for a long period of time, the action of seawater erodes the concrete, causes corrosion of the reinforcing bars, and causes cracks and peeling of the concrete due to volume expansion. Degrading the performance of concrete structures. In particular, in winter, concrete breaks down due to the freezing and thawing action of concrete, and when exposed to automobile exhaust gas for a long time, the neutralization of concrete occurs. Reinforcement used inside the structure is exposed to the outside, causing corrosion in air and water, thereby shortening the life of the structure.
이러한 콘크리트 구조물의 균열을 방치하는 경우, 균열의 진행 및 확산으로 인해 구조물의 안전성이 저해될 수 있으므로 즉각적인 보수 및 보강이 요구되는데, 미세한 균열을 보수하기 위해서는 현재에는 합성수지계인 에폭시 보수제를 많이 사용한다. 그러나 에폭시 보수제의 경우 시공 초기에는 큰 접착강도를 구현하는 반면 장기적인 내구성이 좋지 않아 콘크리트 접착면에서 탈락이 쉽게 발생한다.If cracks in these concrete structures are left unattended, the safety of the structures may be compromised due to the progress and spread of cracks, so immediate repair and reinforcement are required. However, in the case of an epoxy repair agent, high bonding strength is realized at the beginning of construction, but long-term durability is not good, so it is easy to fall off from the concrete bonding surface.
다른 방법으로는, 균열부위에 그라우트재 등의 균열주입재를 이용한 보수재의 경우 균열부위에 접촉되는 부분이 플레이트 형상을 구비하고, 주입부와 연결되는 부분이 돌출되는 'T'자 형상을 구비하고 있어, 주입노즐을 균열이 발생된 부위에 밀착시킬 경우, 주입노즐의 접촉되는 부분에 의해 균열부위가 가려지는 현상이 발생되어 숙련된 작업자의 직감에 의존하여 보수작업을 진행하는 등 균열부위에 균열주입재를 정확하게 주입하기 곤란한 문제점이 있었다. As another method, in the case of a repair material using a crack injection material such as grout at the cracked part, the part in contact with the cracked part has a plate shape, and the part connected to the injection part has a 'T' shape that protrudes. , when the injection nozzle is closely attached to the cracked part, the cracked part is covered by the contact part of the injection nozzle, and the crack injection material is placed on the cracked part by relying on the intuition of a skilled worker to carry out repair work. There was a problem that it was difficult to inject accurately.
따라서 본 발명에서는 상기와 같은 문제점을 해결하기 위하여, 균열이 발생한 콘크리트 부위를 보수함으로써 강도, 경도가 향상 및 고부착성을 발휘하는 미생물제제를 이용한 콘크리트 보수 조성물을 제공하는 것을 기술적 해결과제로 한다.Therefore, in the present invention, in order to solve the above problems, it is a technical solution to provide a concrete repair composition using a microbial agent that improves strength, hardness and exhibits high adhesion by repairing cracked concrete parts.
상기 기술적 과제를 해결하기 위하여 본 발명은,The present invention in order to solve the above technical problem,
아크릴 에멀젼 100중량부; 증점제 3~5 중량부, 소포제 1~3중량부, 유동화제 3~5중량부, 경화제 3~10중량부 및 섬유분말 10~20중량부를 포함하는 혼화제; 알루미나 시멘트, 포틀랜드 시멘트, 탄산칼슘이 1~1.2 : 1~1.2 : 1~1.2의 중량비로 혼합된 무기충전제 30 내지 50중량부; 액상 규산염, 나노실리카 50~95: 5~50 중량비로 혼합된 무기질 바인더 1~10중량부; 실란 커플링제 5~15중량부; 및 미생물제제 1~10 중량부;를 포함하여 이루어지고, 100 parts by weight of acrylic emulsion; An admixture comprising 3 to 5 parts by weight of a thickener, 1 to 3 parts by weight of an antifoaming agent, 3 to 5 parts by weight of a fluidizing agent, 3 to 10 parts by weight of a curing agent, and 10 to 20 parts by weight of a fiber powder; 30-50 parts by weight of an inorganic filler mixed with alumina cement, portland cement, and calcium carbonate in a weight ratio of 1-1.2: 1-1.2: 1-1.2; Liquid silicate, nano-silica 50-95: 1-10 parts by weight of inorganic binder mixed in a 5-50 weight ratio; 5 to 15 parts by weight of a silane coupling agent; and 1 to 10 parts by weight of the microbial agent;
상기 증점제는, 이온성 아크릴계, 폴리비닐 아세테이트계, 폴리에스터계 중 적어도 어느 하나를 포함하며,The thickener includes at least one of ionic acrylic, polyvinyl acetate, and polyester,
상기 소포제는, 지방산계 에스테르이며,The antifoaming agent is a fatty acid-based ester,
상기 유동화제는, 음이온성 계면활성제이며,The fluidizing agent is an anionic surfactant,
상기 경화제는, 파라톨루엔 설포닉산, 페놀 설포닉산, 벤조에이트, 무수프탈산, 방향족 폴리아민, 폴리메캅탄, 페록시디카보네이트 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 미생물제제를 이용한 콘크리트 보수 조성물을 제공한다. The curing agent provides a concrete repair composition using a microbial agent, characterized in that it includes at least one of para-toluene sulfonic acid, phenol sulfonic acid, benzoate, phthalic anhydride, aromatic polyamine, polymercaptan, and peroxydicarbonate. .
본 발명에 있어서, 상기 조성물은 방청제 5~15중량부를 더 포함하는 것을 특징으로 한다.In the present invention, the composition is characterized in that it further comprises 5 to 15 parts by weight of a rust inhibitor.
또한 본 발명에 있어서, 상기 미생물제제는 Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, Mycobacterium smeamatis로 이루어진 군 중에서 하나 이상을 포함하는 것을 특징으로 한다.In addition, in the present invention, the microbial agent is characterized in that it comprises at least one from the group consisting of Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, and Mycobacterium smeamatis.
상기 본 발명에 따른 미생물제제를 이용한 콘크리트 보수 조성물은, 아크릴 에멀젼을 주제로 하기에 접착력이 강하며, 무기충전제로 알루미나 시멘트, 포틀랜드 시멘트, 탄산칼슘을 혼합하여 사용함으로써, 콘크리트의 경도를 향상시키는 효과가 있고, 미생물이 침전물을 생성함으로써 콘크리트 구조물의 밀도의 증가를 통한 콘크리트 강도를 향상시키는 효과가 있다.The concrete repair composition using the microbial agent according to the present invention has a strong adhesion to an acrylic emulsion as a main subject, and by using alumina cement, Portland cement, and calcium carbonate mixed as inorganic fillers, the effect of improving the hardness of concrete There is, there is an effect of improving the concrete strength through the increase of the density of the concrete structure by microorganisms generating sediment.
또한, 본 발명은 방청제를 더 포함함으로써, 외부에 노출된 철근구조물을 보호하고, 녹발생을 막아줌으로써 건축물의 수명을 증대시키는 효과가 있다.In addition, the present invention has an effect of increasing the lifespan of a building by further including a rust preventive agent, protecting the reinforcing bar structure exposed to the outside, and preventing rust generation.
도 1은 본 발명의 콘크리트 보수 조성물을 이용한 보수 공정을 나타낸 것이다.
도 2는 본 발명의 콘크리트 보수 조성물을 이용하여 보수 공정을 마친 콘크리트 구조물의 단면도를 나타낸 것이다.1 shows a repair process using the concrete repair composition of the present invention.
2 is a cross-sectional view of a concrete structure after a repair process using the concrete repair composition of the present invention.
이하, 본 발명을 상세하게 설명하기로 한다. Hereinafter, the present invention will be described in detail.
본 발명은 미생물제제를 이용한 콘크리트 보수 조성물에 관한 것으로, 아크릴 에멀젼을 주제로 사용하여 우수한 접착력을 부여하면서, 미생물제제를 이용하여 콘크리트 구조물의 밀도를 증가시키도록 한 것이다. 구체적으로, 아크릴 에멀젼 100중량부; 증점제 3~5 중량부, 소포제 1~3중량부, 유동화제 3~5중량부, 경화제 3~10중량부 및 섬유분말 10~20중량부를 포함하는 혼화제; 알루미나 시멘트, 포틀랜드 시멘트, 탄산칼슘이 1~1.2 : 1~1.2 : 1~1.2의 중량비로 혼합된 무기충전제 30 내지 50중량부; 액상 규산염, 나노실리카 50~95: 5~50 중량비로 혼합된 무기질 바인더 1~10중량부; 실란 커플링제 5~15중량부; 및 미생물제제 1~10중량부;를 포함하여 이루어진다.The present invention relates to a concrete repair composition using a microbial agent to increase the density of a concrete structure by using an acrylic emulsion as a subject, while providing excellent adhesion. Specifically, 100 parts by weight of an acrylic emulsion; An admixture comprising 3 to 5 parts by weight of a thickener, 1 to 3 parts by weight of an antifoaming agent, 3 to 5 parts by weight of a fluidizing agent, 3 to 10 parts by weight of a curing agent, and 10 to 20 parts by weight of a fiber powder; 30-50 parts by weight of an inorganic filler mixed with alumina cement, portland cement, and calcium carbonate in a weight ratio of 1-1.2: 1-1.2: 1-1.2; Liquid silicate, nano-silica 50-95: 1-10 parts by weight of inorganic binder mixed in a 5-50 weight ratio; 5-15 parts by weight of a silane coupling agent; and 1 to 10 parts by weight of the microbial agent.
본 발명에 있어서 상기 미생물제제는, 방해석 침전물 생성을 이용하는 것으로써 콘크리트의 강도를 향상시키는 효과를 가진다. 이 때 상기 미생물로는 Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, Mycobacterium smeamatis 중 적어도 어느 하나를 포함하며, 1~10중량부를 사용하는 것이 바람직하다. 특히, 바실러스 종의 경우 방해석 형성에 이용되는 미생물로, 방해석 침전물을 매개체 위에 적절히 채워 넣어 줌으로써 콘크리트 구조물의 강도를 향상시킬 수 있다. 매체의 공극률, 셀의 숫자와 첨가물의 양에 따라 콘크리트 구조물의 강도에 미치는 영향을 제어하게 된다. In the present invention, the microbial agent has the effect of improving the strength of concrete by using the calcite sediment generation. At this time, the microorganism includes at least one of Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, and Mycobacterium smeamatis, and it is preferable to use 1 to 10 parts by weight. In particular, in the case of Bacillus species, it is a microorganism used to form calcite, and it is possible to improve the strength of the concrete structure by properly filling the calcite sediment on the medium. The effect on the strength of the concrete structure is controlled by the porosity of the medium, the number of cells and the amount of additives.
이 때 상기 미생물제제는 극도의 기계적, 화학적 스트레스에 견딜 수 있는 특수 셀이며 휴면 중이지만 콘크리트 모체 내에 고착되어 살아갈 수 있다. 상기 미생물제제는 콘크리트에 수분이 흡수됨으로써 활발히 활동하게 되는 특성을 가지고 있으나 만약, 콘크리트의 pH가 12이상의 알칼리 상태일 경우 박테리아 성장을 방해하는 주요 요인이 된다. 따라서 상기 콘크리트 보수 조성물의 pH를 8.5~10으로 유지하기 위해 예로 시트르산, 락트산, 말산, 염산, 아세트산, 인산 및 타르타르산으로 이루어지는 군으로부터 선택되는 1종 이상을 포함하는 수용성 산을 이용하여 pH를 조절하는 것이 바람직하다. 또한 미생물제제를 더욱 활발하게 하기 위해서 상기 콘크리트 보수 조성물의 온도를 35~50℃ 유지해줌으로써 미생물제제를 더욱 활발히 성장 시킬 수 있게 된다. At this time, the microbial agent is a special cell that can withstand extreme mechanical and chemical stress, and is dormant, but can live by being fixed in the concrete matrix. The microbial agent has a characteristic of being actively active by absorption of moisture into the concrete, but if the pH of the concrete is in an alkaline state of 12 or higher, it is a major factor hindering the growth of bacteria. Therefore, in order to maintain the pH of the concrete repair composition at 8.5 to 10, for example, citric acid, lactic acid, malic acid, hydrochloric acid, acetic acid, phosphoric acid and a water-soluble acid containing at least one selected from the group consisting of tartaric acid to adjust the pH. it is preferable In addition, in order to make the microbial preparation more active, the temperature of the concrete repair composition is maintained at 35 to 50° C. so that the microbial preparation can be more actively grown.
또한 상기 아크릴 에멀젼은, 콘크리트 보수 조성물이 우수한 접착력, 탄성 및 내구성의 물성을 가지도록 콘크리트 보수 조성물의 주제로서 사용되는 구성이다. 특히, 상기 아크릴 에멀젼은, 상기 무기충전제와 혼합되어, 무기충전제에 탄성을 부가하고 접착력을 증대시킴으로써, 보수 후에는 콘크리트가 뛰어난 내구성 및 방수성을 가지도록 함으로써, 이를 통해 균열부위에 습기가 침투하는 것을 막아 균열부위의 확장을 억제하고, 재균열의 위험성을 줄여주며, 외부에서 침입하는 물질을 차단함으로써, 내부 철근의 부식을 방지할 수 있다.In addition, the acrylic emulsion is a composition used as a main component of the concrete repair composition so that the concrete repair composition has excellent adhesion, elasticity and durability properties. In particular, the acrylic emulsion is mixed with the inorganic filler to add elasticity to the inorganic filler and increase adhesion, so that the concrete has excellent durability and waterproofness after repair, thereby preventing moisture from penetrating into the cracked area. By blocking the expansion of cracks, reducing the risk of re-cracking, and blocking substances from entering from the outside, it is possible to prevent corrosion of internal rebar.
상기 혼화제는, 조성물의 물성을 개선하기 위한 구성으로서, 특히, 경화시간을 단축하고, 작업을 위한 적당한 점성을 유지하며, 조성간의 혼합을 도와준다.The admixture is a component for improving the physical properties of the composition, and in particular, shortens the curing time, maintains an appropriate viscosity for work, and helps to mix the compositions.
이때, 상기 혼화제는, 증점제, 소포제, 유동화제, 경화제 및 섬유분말을 포함함으로써 콘크리트 조성물의 작업성을 향상시킨다.In this case, the admixture improves the workability of the concrete composition by including a thickener, an antifoaming agent, a fluidizing agent, a curing agent, and a fiber powder.
관련하여, 상기 증점제는, 콘크리트 보수조성물의 점도를 조절하는 기능을 하는데, 예로 이온성 아크릴계, 폴리비닐 아세테이트계, 폴리에스터계 중 적어도 어느 하나를 포함할 수 있으며, 3~5중량부 포함되는 것이 바람직하다. 이는 3중량부 미만인 경우 콘크리트 보수조성물의 점도 조절을 위한 물성발현이 미미하고, 5중량부를 초과하는 경우, 콘크리트 보수조성물의 점도가 높아져 작업이 어려워진다.In this regard, the thickener functions to adjust the viscosity of the concrete repair composition, for example, it may include at least any one of ionic acrylic, polyvinyl acetate, and polyester, and is included in 3 to 5 parts by weight. desirable. When it is less than 3 parts by weight, the physical properties for controlling the viscosity of the concrete repair composition are insignificant, and when it exceeds 5 parts by weight, the viscosity of the concrete repair composition increases and the operation becomes difficult.
다음으로, 소포제는, 콘크리트 보수 조성물 제조를 위하여 아크릴 에멀젼, 혼화제, 무기충전제 등을 넣고 교반기를 이용하여 교반하는 과정에서 기포 발생을 억제함으로써, 기포발생에 따른 콘크리트 보수 조성물의 물성저하를 방지하는데, 예로 지방산계 에스테르가 사용되며 원활한 물성을 얻기 위하여 1~3중량부를 사용하는 적이 바람직하다.Next, the antifoaming agent puts an acrylic emulsion, an admixture, an inorganic filler, etc. for the production of the concrete repair composition and suppresses the occurrence of air bubbles in the process of stirring using a stirrer, thereby preventing the deterioration of the properties of the concrete repair composition due to the foaming. For example, fatty acid-based esters are used, and in order to obtain smooth physical properties, it is preferable to use 1 to 3 parts by weight.
상기 유동화제는, 음이온성 계면활성제로서, 콘크리트 보수 조성물의 작업성향상 및 콘크리트의 내구성을 증대함으로써 재료 분리를 방지하기 위해 사용되묘 3~5중량부 사용되는 것이 바람직하다. 만약, 3중량부 미만인 경우 콘크리트 보수 조성물이 사용되기 충분한 유동성이 발휘되지 않으며, 5중량부 초과인 경우 재료분리를 초래하여 콘크리트 보수조성물의 물성 저하로 이어질 수 있다.The fluidizing agent, as an anionic surfactant, is preferably used in 3 to 5 parts by weight to prevent material separation by improving the workability of the concrete repair composition and increasing the durability of concrete. If it is less than 3 parts by weight, sufficient fluidity to be used for the concrete repair composition is not exhibited, and if it exceeds 5 parts by weight, material separation may occur, which may lead to deterioration of the physical properties of the concrete repair composition.
상기 경화제는, 조성물의 경화시간을 단축하기 위한 구성으로서, 상기 무기 충전제에 작용하여 경화작용을 촉진하고 내구성을 증가시킨다. 적절한 예로 파라톨루엔 설포닉산, 페놀 설포닉산, 벤조에이트, 무수프탈산, 방향족 폴리아민, 폴리메캅탄, 페록시디카보네이트 중 적어도 어느 하나를 포함하며, 3~10중량부가 사용하는 것이 바람직하다.The curing agent is a component for shortening the curing time of the composition, and acts on the inorganic filler to promote a curing action and increase durability. Suitable examples include at least one of para-toluene sulfonic acid, phenol sulfonic acid, benzoate, phthalic anhydride, aromatic polyamine, polymercaptan, and peroxydicarbonate, and it is preferable to use 3 to 10 parts by weight.
상기 섬유분말은, 콘크리트 보수 조성물에 탄성과 내구성을 증대하기 위한 구성으로서, 분말형태의 섬유로 사용되는데 예로 유리섬유, 탄소섬유, 합성섬유, 탄소나노튜브 및 이들 중 2이상의 혼합물일 수 있으며, 평균길이는 0.5~5mm 인 것을 사용하는 것이 바람직하다. 이때, 상기 섬유분말은 10 내지 20중량부 사용되는 것이 바람직한데, 10중량부 미만으로 사용될 경우, 콘크리트 보수 조성물에 탄성과 내구성 증진 효과가 미미하며, 20중량부를 초과하여 사용할 경우 경제성이 떨어지고 무기충전제의 뭉침 현상을 발생시키며, 작업이 어려운 문제를 발생 시킨다. 관련하여, 상기 섬유분말은, 평균길이가 0.5mm 미만인 분말을 사용하는 경우 무기충전제 등과 혼합되어 서로 응집됨으로써 탄성과 내구성을 증가시키는 섬유로서의 역할을 수행하지 못하며, 평균길이가 5mm 초과인 분말을 사용하는 경우 아크릴 에멀젼, 무기충전제 등과 교반이 어렵고 도포작업이 어려운 문제점을 발생시키기 때문이다.The fiber powder is a component for increasing elasticity and durability in the concrete repair composition, and is used as a fiber in powder form, for example, glass fiber, carbon fiber, synthetic fiber, carbon nanotube, and a mixture of two or more of these, and the average It is preferable to use a length of 0.5 to 5 mm. At this time, the fiber powder is preferably used in an amount of 10 to 20 parts by weight. When used in an amount of less than 10 parts by weight, the effect of improving elasticity and durability in the concrete repair composition is insignificant. It causes aggregation of the In relation to this, the fiber powder, when using a powder having an average length of less than 0.5 mm, is mixed with an inorganic filler and agglomerated with each other, thereby not performing a role as a fiber to increase elasticity and durability, and a powder having an average length of more than 5 mm is used This is because it causes problems in that it is difficult to stir with an acrylic emulsion, inorganic filler, etc., and difficult to apply.
또한 본 발명에 있어서 상기 무기충전제는, 본 발명 조성물의 내구성을 증대하기 위한 구성으로서, 30 내지 50중량부가 사용될 수 있으며, 포틀랜드 시멘트, 포틀랜드 시멘트, 탄산칼슘이 1~1.2 : 1~1.2 : 1~1.2의 중량비 혼합됨으로써, 콘크리트의 우수한 강도와 경도를 유지 할 수 있는 것이다. In addition, in the present invention, the inorganic filler, as a configuration for increasing the durability of the composition of the present invention, 30 to 50 parts by weight may be used, Portland cement, Portland cement, and calcium carbonate 1-1.2: 1-1.2: 1-1.2: 1-1.2: 1- By mixing in a weight ratio of 1.2, it is possible to maintain the excellent strength and hardness of concrete.
또한 본 발명에 있어서 상기 무기질 바인더는 별도의 용기에 액상 규산염, 나노실리카를 50~95 : 5~50 중량비로 혼합하고 1~10중량부 사용되는 것이 바람직한데, 상기 액상 규산염은 Si 76.0~80.0중량%, Na 19.6~23.0중량%, K 0.15~0.35중량%, Al 0.2~0.3중량% 및 Fe 0.05~0.15중량%를 포함할 수 있다. 이 때, 상기 나노실리카는 나노미터 크기의 입자와 구조를 가지는 이산화규소(SiO2) 입자로서, 상기 나노실리카는 Si의 함량을 높여 강도를 향상시킴은 물론, 나노실리카 입자의 구조에 의하여 바인더 조성물의 내수성 및 발수성을 향상시킬 수 있게 된다. 이 때, 상기 나노실리카는 5중량비 미만으로 포함시 본 발명에서 요구되는 내수성을 부여하기 어렵고, 50중량비를 초과하여 포함하는 경우에는 무기바인더의 유연성을 저하시키고 과량의 실리카 입자에 의하여 경화가 저해되는 문제점이 있기 때문이다. In addition, in the present invention, the inorganic binder is preferably mixed with liquid silicate and nano-silica in a separate container at a weight ratio of 50 to 95: 5 to 50 and used in 1 to 10 parts by weight, wherein the liquid silicate is Si 76.0 to 80.0 by weight %, Na 19.6 to 23.0% by weight, K 0.15 to 0.35% by weight, Al 0.2 to 0.3% by weight, and Fe may include 0.05 to 0.15% by weight. In this case, the nano-silica is a silicon dioxide (SiO2) particle having a nanometer-sized particle and structure, and the nano-silica not only improves strength by increasing the content of Si, but also improves the strength of the binder composition by the structure of the nano-silica particle. It becomes possible to improve water resistance and water repellency. At this time, when the nano-silica is included in less than 5 weight ratio, it is difficult to impart the water resistance required in the present invention, and when it is included in more than 50 weight ratio, the flexibility of the inorganic binder is reduced and curing is inhibited by excessive silica particles. Because there is a problem.
또한 본 발명에 있어서 상기 실란 커플링제는, 아크릴 에멀젼, 혼화제 및 무기충전제의 혼합을 위하여 5~15중량부가 사용하는데, 서로 상이하여 나노 레벨 이상에서는 혼합이 어려운 유기물의 아크릴 에멀젼과 무기물의 무기충전제가 섞여 혼합될 수 있도록 함으로써 5~15중량부 사용되는 것이 바람직하다. 관련하여, 5중량부 미만 사용되는 경우 아크릴 에멀젼, 혼화제 및 무기충전제의 혼합이 잘 이루어지지 않으며, 15중량부 초과하여 사용되는 경우, 경제성이 떨어지기 때문이다.In addition, in the present invention, 5 to 15 parts by weight of the silane coupling agent is used for mixing the acrylic emulsion, the admixture and the inorganic filler, and the acrylic emulsion of the organic material and the inorganic filler of the inorganic material are different from each other and difficult to mix at the nano level or higher. It is preferable to use 5 to 15 parts by weight by mixing and mixing. In relation to this, when less than 5 parts by weight is used, mixing of the acrylic emulsion, admixture, and inorganic filler is not made well, and when used in excess of 15 parts by weight, economical efficiency is lowered.
또한 본 발명의 조성물은 방청제를 5~15중량부 더 포함할 수 있는데, 콘크리트 중의 염화물에 의한 철근의 부식을 억제하는 목적으로 사용된다. 관련하여 철근의 부식은 일종의 전기화학반응으로 음극 및 양극반응으로 분류되며 양반응이 동시에 병행하여 진행됨으로써 반응을 지연 또는 정지시킴으로써 방청성을 발휘하게 된다. 예로 알루미늄페이스트, 광명단, 징크 크로메이트, 염기성 크롬산 염, 산화아연 및 인산칼슘으로 이루어지는 군으로부터 선택되는 1종 이상을 포함하는 것이 바람직하며, 제조시 무기충전제와 같이 투입하여 분산하는 것이 바람직하다. In addition, the composition of the present invention may further contain 5 to 15 parts by weight of a rust inhibitor, which is used for the purpose of inhibiting corrosion of reinforcing bars by chloride in concrete. In relation to this, corrosion of rebar is a kind of electrochemical reaction and is classified into cathodic and anode reactions, and both reactions proceed in parallel, thereby delaying or stopping the reaction, thereby exhibiting rust prevention properties. For example, it is preferable to include at least one selected from the group consisting of aluminum paste, Gwangmyeongdan, zinc chromate, basic chromate, zinc oxide, and calcium phosphate, and it is preferable to add and disperse it together with an inorganic filler during production.
한편, 본 발명의 콘크리트 보수 조성물은 아크릴 에멀젼을 주제로 사용하여, 혼화제, 무기충전제, 방청제를 투입하여 교반기로 분산과정을 거쳐 아크릴 에멀젼 분산 조성물을 제조하고, 별도로 무기질 바인더를 제조한 뒤, 실란 커플링제 및 미생물제제를 상기 아크릴 에멀젼 분산 조성물에 추가 투입하여 제조될 수 있다. On the other hand, the concrete repair composition of the present invention uses an acrylic emulsion as a subject, an admixture, an inorganic filler, and a rust preventive agent are added and dispersed with a stirrer to prepare an acrylic emulsion dispersion composition, and separately after preparing an inorganic binder, silane couple It can be prepared by adding a ring agent and a microbial agent to the acrylic emulsion dispersion composition.
구체적으로 상기 아크릴 에멀젼을 주제로, 혼화제, 무기충전제, 방청제를 투입하여 교반기로 1시간 동안 분산하는 과정을 거쳐 아크릴 바인더 분산 혼합물을 제조하게 되는데 이때, 아크릴 바인더 분산 혼합물의 입도는 40~60㎛인 것이 바람직하다. 관련하여 분산물의 입도는, 콘크리트 표면의 강도 및 경도에 영향을 미치며, 60㎛초과 입도를 가진 경우, 보수 시에 표면 레벨링성이 좋지 않아 외관적인 측면에서 좋지 않을 뿐만 아니라, 외부 습기의 침투성 효과가 떨어져 도막의 부착성이 떨어지기 때문이다. 또한 입도를 40㎛미만으로 하기 위해서는 고속분산 만으로 입도를 맞추기에는 어려움이 있을 뿐만 아니라, 상당한 시간이 걸리기 때문에 효율이 좋지 않다.Specifically, with the acrylic emulsion as the main subject, an admixture, inorganic filler, and rust preventive agent are added and dispersed for 1 hour with a stirrer to prepare an acrylic binder dispersion mixture. At this time, the particle size of the acrylic binder dispersion mixture is 40 to 60 μm. it is preferable In relation to this, the particle size of the dispersion affects the strength and hardness of the concrete surface, and when it has a particle size of more than 60 μm, the surface leveling property is not good during repair, so it is not good in appearance, and the permeability effect of external moisture is not good. This is because the adhesion of the coating film decreases. In addition, in order to make the particle size less than 40 μm, it is difficult to adjust the particle size only by high-speed dispersion, and the efficiency is not good because it takes a considerable amount of time.
다음으로, 상기 제조된 아크릴 바인더 분산 혼합물에 무기질 바인더, 실란 커플링제 및 미생물제제를 후 첨가하여 혼합균일화 함으로써 콘크리트 보수 조성물을 제조하게 된다. 이는, 상기 무기질 바인더를 고속분산 과정에 포함하지 않는 것은 원활한 고속분산 및 미생물제제의 온도에 의한 피해를 감소하고자 하는 것이다.Next, a concrete repair composition is prepared by adding an inorganic binder, a silane coupling agent, and a microbial agent to the prepared acrylic binder dispersion mixture and then homogenizing the mixing. This is to not include the inorganic binder in the high-speed dispersion process to achieve smooth high-speed dispersion and to reduce damage caused by the temperature of the microbial agent.
이하, 실시예를 통하여 본 발명의 효과를 보다 구체적으로 설명하고자 한다.Hereinafter, the effects of the present invention will be described in more detail through examples.
<실시예 1> 미생물제제를 이용한 콘크리트 보수 조성물 제조<Example 1> Preparation of concrete repair composition using a microbial agent
아크릴 에멀젼 100중량부에 교반기로 저속교반하며 폴리비닐 아세테이트계 증점제 3중량부, 지방산계 에스테르 소포제 3중량부, 음이온성 계면활성제 5중량부, 방향족 폴리아민 경화제 6중량부 및 평균 3mm의 유리섬유 분말 20중량부를 순차적으로 투입하여 아크릴 바인더를 혼합 균일화 하였다. 3 parts by weight of polyvinyl acetate thickener, 3 parts by weight of fatty acid ester defoamer, 5 parts by weight of anionic surfactant, 6 parts by weight of aromatic polyamine curing agent, and glass fiber powder with an average of 3 mm 20 The acrylic binder was mixed and homogenized by sequentially adding parts by weight.
다음으로 상기 혼합 균일화 된 아크릴 바인더에 알루미나 시멘트 15중량부, 포틀랜드 시멘트 15중량부, 탄산칼슘15중량부 및 방청제인 산화아연 15중량부를 교반 중에 투입하여 혼합 균일화 후에, 고속분산을 1시간 동안 실시하여 아크릴 바인더 분산 혼합물을 제조 하였다.Next, 15 parts by weight of alumina cement, 15 parts by weight of Portland cement, 15 parts by weight of calcium carbonate and 15 parts by weight of zinc oxide as a rust preventive agent were added to the mixed and homogenized acrylic binder while stirring, and after mixing and homogenizing, high-speed dispersion was performed for 1 hour. An acrylic binder dispersion mixture was prepared.
고속분산이 완료된 상기 아크릴 바인더 분산 혼합물은 입도를 50㎛임을 확인 하였다.It was confirmed that the high-speed dispersion of the acrylic binder dispersion mixture had a particle size of 50 μm.
다음으로, 별도의 용기에 액상 규산염 80중량부에 나노실리카 20중량부를 투입하여 무기질 바인더를 제조하였다.Next, 20 parts by weight of nanosilica was added to 80 parts by weight of liquid silicate in a separate container to prepare an inorganic binder.
상기 제조된 아크릴 바인더 혼합물을 저속으로 교반하여 상기 제조된 무기질 바인더 10중량부와 실란 커플링제 10중량부 및 미생물제제 10중량부 투입하여 혼합 균일화 하였다.The prepared acrylic binder mixture was stirred at a low speed, and 10 parts by weight of the prepared inorganic binder, 10 parts by weight of a silane coupling agent, and 10 parts by weight of a microbial agent were added to homogenize the mixing.
<실시예 2> 균열 콘크리트 보수<Example 2> Cracked concrete repair
전처리 단계(S100), 이물질 제거 및 건조 단계(S200), 도포 단계(S300)로 균열된 콘크리트 구조물에 보수를 실시하였으며, 상세 과정은 도 1과 같다.Repair was performed on the cracked concrete structure in the pretreatment step (S100), the foreign matter removal and drying step (S200), and the application step (S300), and the detailed process is shown in FIG. 1 .
보다 구체적으로 전처리 단계(S100)는 균열이 발생한 콘크리트 구조물 중 균열부위의 표면을 V컷팅을 통하여 표면을 처리하였다.More specifically, in the pretreatment step (S100), the surface of the cracked part of the concrete structure in which the crack occurred was treated through V-cutting.
다음으로 이물질 제거 및 건조 단계(S200)는 V컷팅 된 콘크리트 표면을 수세공정을 통하여, 이물질을 제거하고 표면의 수분을 4시간 자연건조 하였다.Next, in the step of removing foreign substances and drying (S200), the V-cut concrete surface was washed with water to remove foreign substances and the moisture on the surface was naturally dried for 4 hours.
마지막으로 도포 단계(S300)는 상기 건조된 콘크리트 표면을 상기 실시예 1에서 제조된 콘크리트 보수 조성물을 도 2와 같이 도포하였다.Finally, in the application step (S300), the concrete repair composition prepared in Example 1 was applied to the dried concrete surface as shown in FIG. 2 .
이상은 본 발명에 의해 구현될 수 있는 바람직한 실시예의 일부에 관하여 설명한 것에 불과하므로, 주지된 바와 같이 본 발명의 범위는 위의 실시예에 한정되어 해석되어서는 안 될 것이며, 위에서 설명된 본 발명의 기술적 사상과 그 근본을 함께하는 기술적 사상은 모두 본 발명의 범위에 포함된다고 할 것이다.Since the above has only been described with respect to some of the preferred embodiments that can be implemented by the present invention, as noted, the scope of the present invention should not be construed as being limited to the above embodiments, and It will be said that the technical idea and the technical idea accompanying the fundamental are all included in the scope of the present invention.
S 100: 전처리 단계 1: 콘크리트 구조물
S 200: 이물질 제거 및 건조 단계 2: 균열부위(전처리)
S 300 : 도포 단계 3: 미생물 콘크리트 보수 조성물 S 100: pretreatment step 1: concrete structure
S 200: Foreign matter removal and drying Step 2: Cracked area (pre-treatment)
S 300: Application step 3: Microbial concrete repair composition
Claims (3)
아크릴 에멀젼 100중량부;
증점제 3~5중량부, 소포제 1~3중량부, 유동화제 3~5중량부, 경화제 3~10중량부 및 섬유분말 10~20중량부를 포함하는 혼화제;
알루미나 시멘트, 포틀랜드 시멘트, 탄산칼슘이 1~1.2 : 1~1.2 : 1~1.2의 중량비로 혼합된 무기충전제 30 내지 50중량부;
액상 규산염, 나노실리카 50~95: 5~50중량비로 혼합된 무기질 바인더 1~10 중량부;
실란 커플링제 5~15중량부;
방청제 5~15 중량부; 및
미생물제제 1~10중량부;를 포함하여 이루어지고,
상기 증점제는, 이온성 아크릴계, 폴리비닐 아세테이트계, 폴리에스터계 중 적어도 어느 하나를 포함하며,
상기 소포제는, 지방산계 에스테르이며,
상기 유동화제는, 음이온성 계면활성제이며,
상기 경화제는, 파라톨루엔 설포닉산, 페놀 설포닉산, 벤조에이트, 무수프탈산, 방향족 폴리아민, 폴리메캅탄, 페록시디카보네이트 중 적어도 어느 하나를 포함하며,
상기 방청제는 알루미늄페이스트, 광명단, 징크 크로메이트, 염기성 크롬산염, 산화아연 및 인산칼슘으로 이루어진 군 중에서 하나 이상을 포함하되,
상기 미생물제제는 기계적, 화학적 스트레스에 견디도록 특수 셀에 휴면상태로 포함되며,
상기 미생물제제를 이용한 콘크리트 보수 조성물은 입도가 40~60㎛인 것을 특징으로 하는, 미생물제제를 이용한 콘크리트 보수 조성물.In the concrete repair composition using a microbial agent,
100 parts by weight of acrylic emulsion;
An admixture comprising 3 to 5 parts by weight of a thickener, 1 to 3 parts by weight of an antifoaming agent, 3 to 5 parts by weight of a fluidizing agent, 3 to 10 parts by weight of a curing agent, and 10 to 20 parts by weight of a fiber powder;
30-50 parts by weight of an inorganic filler mixed with alumina cement, portland cement, and calcium carbonate in a weight ratio of 1-1.2: 1-1.2: 1-1.2;
Liquid silicate, nano-silica 50-95: 1-10 parts by weight of an inorganic binder mixed in a 5-50 weight ratio;
5-15 parts by weight of a silane coupling agent;
5 to 15 parts by weight of a rust inhibitor; and
1 to 10 parts by weight of the microbial agent;
The thickener includes at least one of ionic acrylic, polyvinyl acetate, and polyester,
The antifoaming agent is a fatty acid-based ester,
The fluidizing agent is an anionic surfactant,
The curing agent includes at least one of para-toluene sulfonic acid, phenol sulfonic acid, benzoate, phthalic anhydride, aromatic polyamine, polymercaptan, and peroxydicarbonate,
The rust inhibitor includes at least one from the group consisting of aluminum paste, Gwangmyeongdan, zinc chromate, basic chromate, zinc oxide, and calcium phosphate,
The microbial agent is contained in a dormant state in a special cell to withstand mechanical and chemical stress,
The concrete repair composition using the microbial agent is a concrete repair composition using a microbial agent, characterized in that the particle size is 40 ~ 60㎛.
상기 미생물제제는 Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, Mycobacterium smeamatis로 이루어진 군 중에서 하나 이상을 포함하는 것을 특징으로 하는, 미생물제제를 이용한 콘크리트 보수 조성물.According to claim 1,
The microbial agent is Sporosarcina pasteurii, Pseudomonas aeruginosa, Bacillus sphaericus, Bacillus Subtilis, Shewanella algae BrY, Mvxococcus Xanthus, Concrete repair composition using a microorganism, characterized in that it comprises at least one from the group consisting of Mycobacterium smeamatis.
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| KR101963828B1 (en) * | 2018-09-19 | 2019-03-29 | 조성록 | Composite coating putty composition for repairing crack in concrete structure |
| KR101977275B1 (en) * | 2018-12-26 | 2019-05-13 | 안소영 | Earthquake-resistant mortar composition using silicon nitride and construction method thereof |
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| KR101547934B1 (en) * | 2013-11-27 | 2015-08-27 | 주식회사 테크유니온 | Inorganic binder composition for hard-core panel |
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| KR101977275B1 (en) * | 2018-12-26 | 2019-05-13 | 안소영 | Earthquake-resistant mortar composition using silicon nitride and construction method thereof |
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