KR101743042B1 - Mortar composition for restoring cross section of light weight and eco-friendly polymer cement - Google Patents
Mortar composition for restoring cross section of light weight and eco-friendly polymer cement Download PDFInfo
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Abstract
본 발명은 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물에 관한 것으로서, 특히 시멘트계 결합재 30~80중량%, 잔골재 10~50중량%, 팽창제 1~20중량%, 수용성 폴리머 1~20중량%, 보강재 0.01~1중량%를 혼합하며, 상기 수용성 폴리머는 상기 시멘트계 결합재 대비 0.1~1중량%에서 스틸렌 부타디엔라텍스(SBR) 0.01~20중량%, 폴리아크릴에스터(PAE) 0.01~20중량%, 에틸렌비닐아세테이트(EVA) 0.01~20중량%, 스틸렌아크릴에스터(SAE) 0.01~20중량%, 폴리프로피온산비닐(PVP) 0.01~20중량% 및 폴리프로필렌(PP) 0.01~20중량%를 혼합하여 이루어지는 것을 특징으로 한다.
상기와 같은 본 발명에 따르면 콘크리트 구조물의 열화부위, 균열 및 손상부위를 보수하기 위해, 내구성이 우수한 시멘트계 결합재와 방수성 및 기밀성이 우수한 폴리머를 사용함으로써 화학적 침식에 노출되어 있는 콘크리트의 철근 부식을 방지할 수 있다.The present invention relates to a lightweight and eco-friendly polymeric cement rescue mortar composition, and more particularly to a cement mortar composition containing 30 to 80 wt% of cementitious binder, 10 to 50 wt% of fine aggregate, 1 to 20 wt% of swelling agent, 1 to 20 wt% 0.01 to 20% by weight of styrene butadiene latex (SBR), 0.01 to 20% by weight of polyacrylic ester (PAE), 0.1 to 1% by weight of ethylene vinyl acetate (EVA) 0.01 to 20% by weight of styrene-acrylic ester (SAE), 0.01 to 20% by weight of styrene acrylate (SAE), 0.01 to 20% by weight of polyvinyl propionate (PVP) and 0.01 to 20% by weight of polypropylene (PP).
According to the present invention, in order to repair the deteriorated portion, crack and damaged portion of the concrete structure, a cement based binder having excellent durability and a polymer having excellent waterproof property and airtightness are used to prevent corrosion of reinforcing steel exposed to chemical attack .
Description
본 발명은 폴리머 시멘트 단면복구 모르타르 조성물에 관한 것으로서, 상세하게는 콘크리트 구조물의 열화부위, 균열 및 손상부위를 보수하기 위해, 내구성이 우수한 시멘트계 결합재와 방수성 및 기밀성이 우수한 폴리머를 사용함으로써 강도 및 유동성, 탄성, 접착성, 방수성, 기밀성, 내구성이 우수한 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물에 관한 것이다.The present invention relates to a mortar composition for recovering a polymeric cement, and more particularly, to a mortar composition for repairing a polymeric cement, which comprises a cementitious binder having excellent durability and a polymer having excellent waterproofness and airtightness for repairing degradation sites, cracks, Elasticity, adhesion, waterproofness, airtightness and durability of a polymer cement mortar composition.
현대 건축 구조물에서 가장 널리 사용되고 있는 재료 중의 하나인 시멘트 콘크리트는 경제적이고, 재료를 비교적 쉽게 구할 수 있고 형상가공이 용이하며, 적당한 압축강도가 쉽게 얻어지고 내구성 우수, 안정한 구조물의 시공이 가능 하다는 장점을 가지고 있어 건축, 토목 재료로서 광범위하게 사용되고 있다.Cement concrete, which is one of the most widely used materials in modern architectural structures, is economical, has advantages of being relatively easy to obtain materials, easy to shape, easy to obtain appropriate compressive strength, durable and stable construction It has been used extensively as an architectural and civil engineering material.
그러나 시멘트 콘크리트는 휨 및 인장강도, 접착성, 내약품성 등이 약한 단점을 가지고 있으며, 또한 급속한 산업화로 인한 여러 환경적인 요인들에 의해 시멘트 콘크리트 구조물의 성능저하 현상이 발생되고 이것이 사회문제로 대두되기 시작하면서 시멘트의 반영구성에 대한 의문이 제기되고 있다.However, cement concrete has weak points such as bending, tensile strength, adhesiveness, chemical resistance, etc. Also, due to various environmental factors caused by rapid industrialization, the performance of cement concrete structure deteriorates and this becomes a social problem In the beginning, questions about the composition of cement are being raised.
따라서 많은 연구자들은 콘크리트의 고강도화, 고내구성화를 위한 연구를 진행하면서 콘크리트의 성질을 개량시킬 수 있는 하나의 방법으로 콘크리트 기술과 고분자 유기 화합물인 폴리머 기술을 조합한 폴리머 복합재료를 제안하게 되었다.Therefore, many researchers have proposed a polymer composite material that combines concrete technology and polymer technology, which is a polymer organic compound, as a way to improve the properties of concrete while carrying out researches for high strength and high durability of concrete.
또한, 시멘트는 건축재료 중에서도 주요 건설재료로 현대 건축문화 발전에 초석을 다졌으나, 제조 과정에서 사용되는 높은 에너지 소비와 더불어 많은 양의 CO2를 배출하는 것으로 알려져 심각한 환경파괴의 주범으로 밝혀지고 있으며, 이산화탄소를 가장 많이 배출하는 공정은 시멘트클링커 생산 공정 이다. 시멘트 제조 시에 발생되는 이산화탄소 및 여러 가지 오염물질들로 인해 오늘날의 시멘트 산업은 공해산업으로 인식되고 있다. 이에 따라 시멘트 산업에서도 CO2를 줄이기 위한 연구들이 진행되고 있으며, 최근에는 시멘트를 대체할 수 있는 산업부산물을 활용한 연구가 활발히 진행 중이며, 클링커를 사용하지 않고 고로슬래그 및 산업부산물을 이용하여 시멘트를 제조할 수 있다면 석회석 고갈 및 이산화탄소 배출에 의한 환경오염 문제에 도움이 될 것으로 예상된다.Cement is one of the most important building materials among construction materials. However, it is known that it emits a large amount of CO 2 together with high energy consumption used in the manufacturing process. It is known as a major cause of environmental destruction , And the process that produces the most carbon dioxide is the cement clinker production process. Today's cement industry is recognized as a pollution industry because of the carbon dioxide and various pollutants generated in the production of cement. Accordingly, the cement industry also is proceeding to study for reducing CO 2, recently jungyimyeo studies utilizing industrial by-products that can replace cement actively, without the use of clinker and cement using the slag and industrial by-products If it can be manufactured, it is expected to contribute to environmental pollution problems due to limestone depletion and carbon dioxide emission.
이러한 배경을 바탕으로, 콘크리트 구조물에 여러 환경적 요인과 열화 현상으로 인해 구조내력저하 등 성능저하 현상의 문제점을 해결 하기해 폴리머 시멘트가 단면 복구재로 활용되고 있다. 이러한 폴리머를 혼입한 폴리머 시멘트 모르타르 및 콘크리트는 인장강도, 휨강도, 접착성, 수밀성, 내마모성, 그리고 내약품성 등을 개선시키는데 우수한 효과가 있어 고성능이 요구되어지는 건축 구조물의 외장재, 바닥 마감재, 포장재, 방수재, 장식 코팅재, 그리고 보수재 등의 용도로 많이 사용되고 있다. 또한, 기존의 시멘트 콘크리트의 취약성을 보완하는 측면뿐만 아니라 보다 내구적이고 안정적인 구조재료의 역할을 할 수 있어 다양한 용도의 개발이 이루어지고 있다. 그러나 현재 국내에서 진행되고 있는 건축 재료로서의 폴리머 연구는 매우 기초적인 단계에 있으며, 또 국내에서 사용되고 있는 폴리머의 대부분은 수입에 의존하고 있는 실정이다. 앞으로 국내에서도 건축 재료로 사용할 수 있는 폴리머의 연구가 이루어져야 하며, 지속적인 연구를 통하여 고성능을 가진 폴리머를 제조하기 위한 연구가 절실히 요구된다.Based on these backgrounds, polymer cement is being used as a cross-sectional restorative material to solve the problems of performance deterioration such as degradation of structural strength due to various environmental factors and deterioration phenomenon in concrete structures. Polymer cement mortar and concrete incorporating such a polymer have excellent effects in improving tensile strength, bending strength, adhesiveness, watertightness, abrasion resistance, and chemical resistance, so that they can be used as exterior materials, flooring materials, packaging materials, , Decorative coating materials, and repair materials. In addition, it can be used as a durable and stable structural material as well as to supplement the weakness of existing cement concrete, and various applications are being developed. However, the research of polymers as building materials currently underway in Korea is at a very basic stage, and most of the polymers used in Korea depend on imports. In the future, research on polymers that can be used as building materials in Korea should be conducted, and research for manufacturing polymers having high performance through continuous research is urgently required.
또한, 단면복구재는 기존 콘크리트와의 일체화가 가장 중요하므로 뛰어난 접착성과 열화요소 침입의 억제효과가 요구되며, 이러한 성능은 폴리머를 혼입함으로써 만족시킬 수 있을 거라 기대된다. 폴리머 시멘트 복합체는 수화 과정 시 그 내부에 폴리머 막을 형성하여 시멘트와 일체화된 결합조직을 이루고, 공극구조를 불연속적으로 만들어 시멘트 복합체의 접착성 및 내구성을 향상시키므로 단면복구를 위한 재료로서 우수한 성능을 보일 수 있다.In addition, it is expected that excellent adhesion and deterioration effect of penetration of deterioration elements are required to be integrated with the existing concrete, and the performance is expected to be satisfied by incorporating the polymer. The polymer cement composite forms a polymer membrane inside the hydration process to form a bonded structure integrated with the cement and improves the adhesion and durability of the cement composite by making the void structure discontinuous, .
그러나, 현재의 폴리머 시멘트 모르타르는 주로 방수 및 타일 등의 접착을 위한 용도로 국한되게 사용하고 있고, 기존의 폴리머 시멘트 모르타르에 관한 연구도 모르타르의 물성 평가에 관한 것일 뿐 단면복구재로서의 내구성능에 관한 연구는 이루어지지 않은 실정이다.However, the present polymer cement mortar is mainly used for the purpose of adhesion for waterproofing and tile, and the study on the existing polymer cement mortar is also related to the evaluation of the physical properties of the mortar. Research has not been done yet.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 콘크리트 구조물의 열화부위, 균열 및 손상부위를 보수하기 위해, 내구성이 우수한 시멘트계 결합재와 방수성 및 기밀성이 우수한 폴리머를 사용함으로써 화학적 침식에 노출되어 있는 콘크리트의 철근 부식을 방지할 수 있도록 하는 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a cement based binder having excellent durability and a polymer having excellent waterproof property and airtightness in order to repair a deteriorated portion, Which is capable of preventing the corrosion of reinforcing bars of the cement mortar composition.
또한, 본 발명은 시멘트를 대체한 산업부산물을 활용함으로써 친환경적이며 고부가가치화에 기여할 수 있고, 고로슬래그 및 플라이애쉬 등은 화학 저항성능이 우수하여 염해 및 중성화 피해에 효과적이며, 경량 골재를 사용함으로써 단면복구재를 경량화시킬 수 있으며, 경량골재의 SiO2에 의해 포졸란 반응을 유도시켜 장기 강도를 향상 시킬 수 있고, 팽창제를 사용하여 균열 저감 효과를 얻을 수 있으며, 보강재를 사용을 통해 인장강도, 휨강도와 같은 내구성 향상을 기대할 수 있도록 하는 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물을 제공하는데 다른 목적이 있다.In addition, the present invention can contribute to environment-friendly and high value-added by utilizing industrial by-products replacing cement, and blast furnace slag and fly ash are excellent in chemical resistance performance and effective for damage from salting and neutralization, It is possible to lighten the restorative material and improve the long-term strength by inducing the pozzolanic reaction by SiO 2 of lightweight aggregate. It is possible to obtain a crack-reducing effect by using a swelling agent. By using a reinforcing material, tensile strength, bending strength Another object of the present invention is to provide a lightweight and eco-friendly polymeric cement resurfacing mortar composition which can expect the same durability improvement.
상기와 같은 목적을 달성하기 위한 본 발명의 특징은,According to an aspect of the present invention,
시멘트계 결합재 30~80중량%, 잔골재 10~50중량%, 팽창제 1~20중량%, 수용성 폴리머 1~20중량%, 보강재 0.01~1중량%를 혼합하며, 상기 수용성 폴리머는 스틸렌 부타디엔라텍스(SBR) 0.01~20중량%, 폴리아크릴에스터(PAE) 0.01~20중량%, 에틸렌비닐아세테이트(EVA) 0.01~20중량%, 스틸렌아크릴에스터(SAE) 0.01~20중량%, 폴리프로피온산비닐(PVP) 0.01~20중량% 및 폴리프로필렌(PP) 0.01~20중량%를 혼합하여 이루어지는 것을 특징으로 한다.Wherein the water-soluble polymer is at least one selected from the group consisting of styrene butadiene latex (SBR), styrene-butadiene latex (SBR), styrene-butadiene latex (SBR) 0.01 to 20% by weight of polyacrylic acid ester (PAE), 0.01 to 20% by weight of polyacrylic ester (PAE), 0.01 to 20% by weight of ethylene vinyl acetate (EVA), 0.01 to 20% by weight of styrene acrylate (SAE) 20% by weight of polypropylene and 0.01 to 20% by weight of polypropylene (PP).
여기에서, 상기 시멘트계 결합재는 포틀랜드 시멘트, MDF시멘트, DSP 시멘트, 덴시트형 시멘트, 파이라멘트형 시멘트, 칼슘 알루미네이트 시멘트, 플라스터, 실리케이트 시멘트, 석고 시멘트, 포스페이트 시멘트, 고 알루미나 시멘트, 초미립 시멘트, 슬래그 시멘트, 마그네슘 옥시클로라이드 시멘트, 초속경 시멘트, 알루미나 시멘트 및 마이크로시멘트로 이루어진 군에서 선택된 1종 이상이다.The cementitious binder may be selected from the group consisting of Portland cement, MDF cement, DSP cement, dense sheet cement, pillar cement, calcium aluminate cement, plaster, silicate cement, gypsum cement, phosphate cement, high alumina cement, Slag cement, magnesium oxychloride cement, ultra fast cement, alumina cement and micro cement.
여기에서 또한, 상기 시멘트계 결합재는 상기 시멘트계 결합재 100중량%에 대하여 고로슬래그가 1~30중량% 더 함유된다.Here, the cementitious binder may further contain 1 to 30% by weight of blast furnace slag with respect to 100% by weight of the cementitious binder.
여기에서 또, 상기 시멘트계 결합재는 상기 시멘트계 결합재 100중량%에 대하여 플라이애쉬가 1~20중량% 더 함유된다.Here, the cementitious binder may further contain 1 to 20% by weight of fly ash based on 100% by weight of the cementitious binder.
여기에서 또, 상기 시멘트계 결합재는, 비중 2.2~2.9g/㎤, 블레인 값(Blaine value) 7,000~8,000㎠/g인 벤토나이트가 상기 시멘트계 결합재 100중량%에 대하여 1~10중량% 더 함유된다.Here, the cementitious binder may further contain bentonite having a specific gravity of 2.2 to 2.9 g /
여기에서 또, 상기 잔골재는 밀도 1.3~2.7g/㎤, 입경 1.0㎜ 이하의 흡수율이 낮은 강모래, 부순 자갈, 부순 모래, 규사, 바텀애쉬로 이루어진 군에서 선택된 1종 이상이다.Here, the fine aggregate is at least one selected from the group consisting of heavy sand having a density of 1.3 to 2.7 g /
여기에서 또, 상기 바텀애쉬는 SiO2 52.0중량%, Al2O3 23.5중량%, Fe2O3 9.63중량%, CaO 8.09중량%, MgO 1.89중량%, TiO2 1.36중량%, MnO 0.07중량%, 기타성분 3.46중량%로 이루어진다.Here, the bottom ash was composed of 52.0 wt% of SiO 2 , 23.5 wt% of Al 2 O 3 , 9.63 wt% of Fe 2 O 3 , 8.09 wt% of CaO, 1.89 wt% of MgO, 1.36 wt% of TiO 2 , 0.07 wt% By weight, and 3.46% by weight of other components.
여기에서 또, 상기 팽창제는 CSA(Calcium Sulfoaluminate)계 팽창제이다.Here, the swelling agent is a CSA (Calcium Sulfoaluminate) swelling agent.
여기에서 또, 상기 보강재는 유리섬유, 강섬유, 폴리아미드 섬유, 폴리프로필렌 섬유, 폴리에틸렌 섬유 및 탄소섬유 중 선택된 하나 또는 2개 이상이다.Here, the reinforcing material is one or more selected from glass fiber, steel fiber, polyamide fiber, polypropylene fiber, polyethylene fiber and carbon fiber.
여기에서 또, 상기 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물은 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물의 100중량부에 대하여 물 20~50중량부를 혼합한다.Here, the lightweight and eco-friendly polymeric cement rescue mortar composition is prepared by mixing 20 to 50 parts by weight of water with respect to 100 parts by weight of the lightweight and environmentally friendly polymeric cement rescue mortar composition.
상기와 같이 구성되는 본 발명인 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물에 따르면, 콘크리트 구조물의 열화부위, 균열 및 손상부위를 보수하기 위해, 내구성이 우수한 시멘트계 결합재와 방수성 및 기밀성이 우수한 폴리머를 사용함으로써 화학적 침식에 노출되어 있는 콘크리트의 철근 부식을 방지할 수 있다.According to the present invention, a cement-based binder having excellent durability and a polymer having excellent waterproofness and airtightness are used for repairing deteriorated parts, cracks and damaged parts of concrete structures, It is possible to prevent corrosion of reinforcing steel of concrete exposed to erosion.
또한, 본 발명에 따르면 시멘트를 대체한 산업부산물 활용함으로써 친환경적이며 고부가가치화에 기여할 수 있고, 고로슬래그 및 플라이애쉬, 슬래그 잔골재 등은 화학 저항성능이 우수하여 염해 및 중성화 피해에 효과적일 것이며, 고로슬래그의 잠재수경성 반응과 플라이애쉬 및 경량 골재의 포졸란 반응으로 장기 강도가 증가할 수 있으며, 더욱이 보강재를 사용을 통해 인장강도, 휨강도 등과 같은 고내구성 결합재 조성물을 제조할 수 있다.According to the present invention, by using industrial by-products replacing cement, it is possible to contribute to environment-friendly and high value-added by using cement. Blast furnace slag, fly ash and fine slag fine aggregate are excellent in chemical resistance performance, And the pozzolanic reaction of the fly ash and the lightweight aggregate can increase the long-term strength. Further, by using the reinforcing material, a high-durability bonding material composition such as tensile strength, bending strength and the like can be manufactured.
도 1 및 도 2는 본 발명의 실험예에 따른 단면복구재의 재령28일 압축강도와 부착강도에 대한 실험 결과를 나타낸 그래프이다.
도 3 및 도 4는 본 발명의 실험예에 따른 단면복구재의 재령28일 수축율과 투수량에 대한 실험 결과를 나타낸 그래프이다.
도 5 및 도 6은 본 발명의 실험예에 따른 단면복구재의 재령28일 탄산화저항성과 황산저항성에 대한 실험 결과를 나타낸 그래프이다.FIG. 1 and FIG. 2 are graphs showing experimental results on the compressive strength and the bond strength at the age of 28 days for the cross-sectional restorative material according to the experimental example of the present invention.
FIG. 3 and FIG. 4 are graphs showing experimental results on the shrinkage percentage and the amount of water permeability for the age 28-day recovery material according to the experimental example of the present invention.
FIG. 5 and FIG. 6 are graphs showing experimental results on the resistance to carbonation and sulfuric acid resistance at the age of 28 days of the test piece according to the experimental example of the present invention. FIG.
이하, 본 발명에 따른 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물을 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the lightweight and environmentally friendly polymer cement mortar composition according to the present invention will be described in detail with reference to the accompanying drawings.
하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략할 것이다. 그리고 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.
본 발명에 따른 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물은 시멘트계 결합재 30~80중량%, 잔골재 10~50중량%, 팽창제 1~20중량%, 수용성 폴리머 1~20중량%, 보강재 0.01~1중량%를 혼합하여 조성된다.The lightweight and environmentally friendly polymeric cement rescue mortar composition according to the present invention comprises 30 to 80% by weight of a cementitious binder, 10 to 50% by weight of fine aggregate, 1 to 20% by weight of an expanding agent, 1 to 20% by weight of a water- .
먼저, 시멘트계 결합재는 포틀랜드 시멘트, MDF시멘트, DSP 시멘트, 덴시트형 시멘트, 파이라멘트형 시멘트, 칼슘 알루미네이트 시멘트, 플라스터, 실리케이트 시멘트, 석고 시멘트, 포스페이트 시멘트, 고 알루미나 시멘트, 초미립 시멘트, 슬래그 시멘트, 마그네슘 옥시클로라이드 시멘트, 초속경 시멘트, 알루미나 시멘트 및 마이크로시멘트로 이루어진 군에서 선택된 1종 이상으로 30~80중량%가 혼합되는 데, 80중량%를 초과하면 점도가 낮아지며 워커빌리티의 저하가 발생하기 쉬우며, 30중량% 미만을 사용하면 잔골재의 함유량이 높아져 강도저하를 야기할 수 있다.First, the cementitious binder is selected from the group consisting of Portland cement, MDF cement, DSP cement, dense sheet cement, pillar cement, calcium aluminate cement, plaster, silicate cement, gypsum cement, phosphate cement, high alumina cement, , Magnesium oxychloride cement, ultra fast cement, alumina cement, and micro cement. When the amount of the filler is more than 80% by weight, the viscosity is lowered and the workability tends to be lowered If less than 30% by weight is used, the content of the fine aggregate increases and the strength may be lowered.
또한, 시멘트계 결합재는 잠재 수경성 특성, 장기 강도 발현 및 내구성 증진, 황산염 저항성, 알칼리 골재반응 억재를 위해 시멘트계 결합재 100중량%에 대하여 고로슬래그가 1~30중량% 더 함유될 수 있고, 30중량%를 초과하였을 때에는 초기강도저하 및 중성화 촉진에 영향을 미치고, 1중량% 미만을 사용하면 그 효과가 미미하다.The cementitious binder may further contain 1 to 30% by weight of blast furnace slag with respect to 100% by weight of the cementitious binder, and may contain 30% by weight of the blast furnace slag in order to improve latent hydraulic characteristics, long-term strength development and durability, , The initial strength is lowered and the neutralization is accelerated. When the amount is less than 1% by weight, the effect is insignificant.
또, 시멘트계 결합재는 포졸란 반응 특성, 장기 강도 발현 및 볼베어링 효과, 화학 저항성, 건조수축 저감을 위해 시멘트계 결합재 100중량%에 대하여 플라이애쉬가 1~20중량% 더 함유될 수 있고, 20중량%를 초과하였을 때에는 초기강도 저하의 단점이 있고, 1중량% 미만을 사용하면 그 효과가 미미한 단점이 있다.The cementitious binder may further contain 1 to 20% by weight of fly ash relative to 100% by weight of the cementitious binder in order to exhibit pozzolanic reaction characteristics, long-term strength development, ball bearing effect, chemical resistance and drying shrinkage reduction, There is a disadvantage in that the initial strength is lowered. When the amount is less than 1% by weight, the effect is insignificant.
또, 시멘트계 결합재는 팽윤성 및 접착성, 자체보수성, 회복성, 윤활성, 높은 분말도에 의한 치밀성을 위해 시멘트계 결합재 100중량%에 대하여 비중 2.2~2.9g/㎤, 블레인 값(Blaine value) 7,000~8,000㎠/g인 벤토나이트가 1~10중량% 더 함유될 수 있고, 10중량%를 초과하였을 때에는 워커빌리티 및 강도 저하의 단점이 있고, 1중량% 미만을 사용하면 그 효과가 미미하다.The cementitious binder preferably has a specific gravity of 2.2 to 2.9 g / cm3 and a blaine value of 7,000 to 8,000 (w / w) based on 100% by weight of the cementitious binder in order to exhibit swelling property and adhesiveness, self- Cm < 2 > / g can be contained in an amount of 1 to 10% by weight. When it exceeds 10% by weight, there is a drawback of workability and strength reduction.
그리고, 잔골재는 밀도 1.3~2.7g/㎤, 입경 1.0㎜ 이하의 흡수율이 낮은 강모래, 부순 자갈, 부순 모래, 규사, 바텀애쉬로 이루어진 군에서 선택된 1종 이상이고, 10~50중량%로 혼합되는 데, 50중량%를 초과하였을 때에는 재료분리 및 강도 저하의 단점이 있고, 10중량% 미만을 사용하면 워커빌리티 저하의 단점이 있다. 이때, 바텀애쉬는 실리카의 함유량이 많아 포졸란 반응을 유도시켜 장기강도를 증진시킬 수 있으며 경량골재로써 경량화시킬 수 있는 장점을 가지며, 화학성분은 SiO2 52.0중량%, Al2O3 23.5중량%, Fe2O3 9.63중량%, CaO 8.09중량%, MgO 1.89중량%, TiO2 1.36중량%, MnO 0.07중량%, 기타성분(Na2O, K2O 등) 3.46중량%로 이루어진다.The fine aggregate is at least one selected from the group consisting of heavy sand having a density of 1.3 to 2.7 g /
또한, 팽창제는 초기 재령에서 팽창력을 발휘하여 경화체의 구조를 치밀하게 해 주고 건조수축을 최소화하여 균열을 억제하도록 CSA(Calcium Sulfoaluminate)계 팽창제로서 1~20중량%가 혼합되는 데, 20중량%를 초과하였을 때에는 팽창 균열이 발생할 수 있으며, 1중량% 미만을 사용하면 그 효과가 미미하다. In addition, the swelling agent exerts an expansion force at an early age to tighten the structure of the cured body, minimizes drying shrinkage, and is mixed with 1 to 20% by weight as a CSA (Calcium Sulfoaluminate) , Expansion cracks may occur, and if the amount is less than 1% by weight, the effect is insignificant.
또, 수용성 폴리머는 스틸렌 부타디엔라텍스(SBR) 0.01~20중량%, 폴리아크릴에스터(PAE) 0.01~20중량%, 에틸렌비닐아세테이트(EVA) 0.01~20중량%, 스틸렌아크릴에스터(SAE) 0.01~20중량%, 폴리프로피온산비닐(PVP) 0.01~20중량% 및 폴리프로필렌(PP) 0.01~20중량%를 혼합하여 이루어지는 데, 폴리머가 사용량이 증가할수록 표면경도 저하에 영향을 미치며 20중량%를 초과하면 점도가 낮아지고 재료 분리가 발생하기 쉬우며, 수화반응을 지연시켜 초기 강도 발현에 영향을 미칠 수 있으며, 고가의 재료이므로 비경제적이고, 1중량% 미만이면 폴리머의 성능이 미약할 수 있다.The water-soluble polymer may contain 0.01 to 20 wt% of styrene butadiene latex (SBR), 0.01 to 20 wt% of polyacrylic ester (PAE), 0.01 to 20 wt% of ethylene vinyl acetate (EVA), 0.01 to 20 wt% of styrene acrylate 0.01 to 20% by weight of polypropoxylic acid (PVP) and 0.01 to 20% by weight of polypropylene (PP). When the amount of the polymer is increased, the surface hardness is lowered. When the content exceeds 20% by weight The viscosity may be lowered, material separation may easily occur, the hydration reaction may be delayed to affect the initial strength development, and it may be uneconomical because it is an expensive material, and if it is less than 1 wt%, the performance of the polymer may be weak.
계속해서, 보강재는 유리섬유, 강섬유, 폴리아미드 섬유, 폴리프로필렌 섬유, 폴리에틸렌 섬유 및 탄소섬유 중 선택된 하나 또는 2개 이상으로 0.01~1중량%이 혼합되고, 1중량% 이상을 사용할 경우 섬유 뭉침 현상으로 유동성 및 성능 저하가 발생할 수 있으며, 0.01 중량% 미만을 사용할 경우 부착성능이 저하되어 효과가 미미하여 성능 개선에 문제가 발생할 수 있다.Subsequently, the reinforcing material is mixed with 0.01 to 1 wt% of one or more selected from among glass fiber, steel fiber, polyamide fiber, polypropylene fiber, polyethylene fiber and carbon fiber, and when 1 wt% And if it is used in an amount of less than 0.01% by weight, adhesion performance may be lowered and the effect may be insignificant, which may cause problems in performance improvement.
한편, 본 발명에 따른 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물은 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물의 100중량부에 대하여 물 20~50중량부를 혼합하여 사용하는 것이 바람직하다.Meanwhile, the lightweight and eco-friendly polymer cement rescue mortar composition according to the present invention is preferably used by mixing 20 to 50 parts by weight of water with respect to 100 parts by weight of the lightweight and environmentally friendly polymer cement rescue mortar composition.
이하, 실험예를 통하여 본 발명을 보다 상세히 설명하고자 하며, 본 실험예는 가장 바람직한 실시형태를 통하여 본 발명을 보다 구체적으로 설명하기 위함이며, 본 발명의 범위가 실험예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Experimental Examples. The present Experimental Examples are intended to illustrate the present invention more specifically through the most preferred embodiments, and the scope of the present invention is not limited to Experimental Examples.
본 발명에 따라 제조된 경량 및 친환경 폴리머 시멘트 단면복구 모르타르, 즉 단면복구재의 성능을 평가하기 위해 최적 배합을 선정하여 평가를 실시하였다. 시멘트계 결합재는 65중량%, 잔골재는 경량 골재와 일반 골재를 35중량%를 혼합하였고, 물시멘트비는 27%이다.In order to evaluate the performance of the lightweight and eco - friendly polymer cement cross - section repair mortar, that is, the resurfacer prepared according to the present invention, the optimum formulation was selected and evaluated. 65% by weight of cement based binder, 35% by weight of light aggregate and general aggregate of fine aggregate, and water cement ratio of 27%.
본 발명에 따라 제조된 단면복구 모르타르의 성능을 평가하기 위해 Φ100×00㎜인 원주형 공시체를 이용하여 시편을 제작한다. 시편의 양생조건은 기건 20±3℃의 사온에서 24시간 양생을 실시 후 20±3℃의 수중에서 양생을 실시한다. 이후, 공시체를 성능 평가와 내산성 성능 평가 재령까지 양생을 실시한다.In order to evaluate the performance of the section-restoring mortar produced according to the present invention, a specimen is manufactured using a columnar specimen having a diameter of 100 mm × 00 mm. Curing conditions of specimens shall be cured at room temperature of 20 ± 3 ℃ for 24 hours and then cured at 20 ± 3 ℃. Thereafter, curing is carried out until the performance evaluation and acid resistance performance evaluation period of the specimens.
도 1 및 도 2는 본 발명의 실험예에 따른 단면복구재의 재령28일 압축강도와 부착강도에 대한 실험 결과를 나타낸 그래프이고, 도 3 및 도 4는 본 발명의 실험예에 따른 단면복구재의 재령28일 수축율과 투수량에 대한 실험 결과를 나타낸 그래프이며, 도 5 및 도 6은 본 발명의 실험예에 따른 단면복구재의 재령28일 탄산화저항성과 황산저항성에 대한 실험 결과를 나타낸 그래프이다.FIGS. 1 and 2 are graphs showing experimental results on the compressive strength and the bond strength at 28 days of age according to the experimental example of the present invention. FIG. 3 and FIG. FIG. 5 and FIG. 6 are graphs showing experimental results on the resistance to carbonation and sulfuric acid resistance at the age of 28 of the cross-sectional restorative material according to the experimental example of the present invention. FIG.
도 1을 참조하면, 재령 28일 압축강도는 KS F 4042 성능기준을 만족하는 강도가 측정되었다. 이는, 일반골재 및 경량골재의 입도 분포가 균일하여 우수한 강도가 발현되었으며, 산업부산물인 플라이애쉬와 고로슬래그를 사용하여 장기 강도가 향상되었다.Referring to FIG. 1, the strength at 28 days compressive strength was measured to meet KS F 4042 performance standard. This is because the granular aggregate and the lightweight aggregate have uniform particle size distribution and excellent strength was exhibited. The long - term strength was improved by using fly ash and blast furnace slag, which are industrial by - products.
도 2를 참조하면, 재령 28일 부착강도는 KS F 4042 성능기준을 만족하며, 사용된 폴리머와 보강재인 섬유에 의해 부착성능이 우수하게 나타났다.Referring to FIG. 2, the adhesion strength at 28 days of age satisfies the performance standard of KS F 4042, and the adhesion performance is excellent due to the polymer used and the fiber as the reinforcing material.
도 3 및 4를 참조하면, 수축율과 투수량은 KS F 4042의 성능기준을 만족하였는데, 이는 결합재에 사용된 팽창제에 의해 경화시 발생하는 건조수축 및 수축균열을 방지하였기 때문이다.Referring to FIGS. 3 and 4, the shrinkage ratio and the amount of permeability satisfy the performance criteria of KS F 4042 because it prevents drying shrinkage and shrinkage cracking that occur during curing by the swelling agent used in the binder.
도 5 및 6을 참조하면, 탄산화저항성과 내황산성이 우수하였다. 이는, 결합재에 사용된 산업부산물의 특성인 내황산성에 기인한 것이다.Referring to FIGS. 5 and 6, the carbonation resistance and sulfuric acid resistance were excellent. This is due to sulfuric acid resistance, which is a characteristic of the industrial by-products used in the binder.
이상에서 설명한 바와 같이 본 발명에 따른 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물인 단면보수재에 의하면, 보수 및 유지관리의 비용절감 효과가 있을 수 있고, 산업부산물의 적극적인 활용으로 CO2 저감효과 및 고부가가치화에 기여할 수 있다.According to the light weight and environmentally friendly polymer cement sectional repair mortar composition of the cross section repair material according to the invention as described above, there may be cost savings in repair and maintenance, the active use of industrial by-product CO 2 reduction and high value-added . ≪ / RTI >
본 발명은 다양하게 변형될 수 있고 여러 가지 형태를 취할 수 있으며 상기 발명의 상세한 설명에서는 그에 따른 특별한 실시 예에 대해서만 기술하였다. 하지만 본 발명은 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .
Claims (10)
상기 시멘트계 결합재는,
상기 시멘트계 결합재 100중량%에 대하여 고로슬래그 1~30중량%와, 플라이애쉬가 1~20중량% 및 비중 2.2~2.9g/㎤, 블레인 값(Blaine value) 7,000~8,000㎠/g인 벤토나이트가 1~10중량% 더 함유되고,
상기 잔골재는,
밀도 1.3~2.7g/㎤, 입경 1.0㎜ 이하의 흡수율이 낮고, SiO2 52.0중량%, Al2O3 23.5중량%, Fe2O3 9.63중량%, CaO 8.09중량%, MgO 1.89중량%, TiO2 1.36중량%, MnO 0.07중량%, 기타성분 3.46중량%로 구성된 바텀애쉬이며,
상기 수용성 폴리머는,
스틸렌 부타디엔라텍스(SBR) 0.01~20중량%, 폴리아크릴에스터(PAE) 0.01~20중량%, 에틸렌비닐아세테이트(EVA) 0.01~20중량%, 스틸렌아크릴에스터(SAE) 0.01~20중량%, 폴리프로피온산비닐(PVP) 0.01~20중량% 및 폴리프로필렌(PP) 0.01~20중량%를 혼합하여 이루어지는 것을 특징으로 하는 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물.Wherein the cementitious binder is 30 to 80% by weight, the fine aggregate is 10 to 50% by weight, the CSA (calcium sulfoaluminate) based swelling agent is 1 to 20% by weight, the water soluble polymer is 1 to 20% by weight, glass fiber, steel fiber, polyamide fiber, 0.01 to 1% by weight of a reinforcing material selected from one or more selected from among fibers and carbon fibers,
The above-
1 to 30% by weight of blast furnace slag, 1 to 20% by weight of fly ash, 2.2 to 2.9 g / cm3 of specific gravity and 7,000 to 8,000 cm2 / g of blaine value of 7,000 to 8,000 cm2 / g based on 100% To 10% by weight,
In the fine aggregate,
A water repellent film having a density of 1.3 to 2.7 g / cm 3 and a water absorption of 1.0 mm or less is low and contains 52.0 wt% of SiO 2 , 23.5 wt% of Al 2 O 3 , 9.63 wt% of Fe 2 O 3 , 8.09 wt% of CaO, 1.89 wt% 2 1.36% by weight, MnO 0.07% by weight, and the other components 3.46% by weight,
The water-
0.01 to 20% by weight of styrene butadiene latex (SBR), 0.01 to 20% by weight of polyacrylic ester (PAE), 0.01 to 20% by weight of ethylene vinyl acetate (EVA), 0.01 to 20% by weight of styrene acrylate ester (SAE) 0.01 to 20% by weight of vinyl (PVP) and 0.01 to 20% by weight of polypropylene (PP).
상기 시멘트계 결합재는,
포틀랜드 시멘트, MDF시멘트, DSP 시멘트, 덴시트형 시멘트, 파이라멘트형 시멘트, 칼슘 알루미네이트 시멘트, 플라스터, 실리케이트 시멘트, 석고 시멘트, 포스페이트 시멘트, 고 알루미나 시멘트, 초미립 시멘트, 슬래그 시멘트, 마그네슘 옥시클로라이드 시멘트, 초속경 시멘트, 알루미나 시멘트 및 마이크로시멘트로 이루어진 군에서 선택된 1종 이상인 것을 특징으로 하는 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물.The method according to claim 1,
The above-
Portland cement, MDF cement, DSP cement, dense sheet type cement, pillar type cement, calcium aluminate cement, plaster, silicate cement, gypsum cement, phosphate cement, high alumina cement, ultrafine cement, slag cement, magnesium oxychloride cement , Ultra fast cement, alumina cement, and micro cement. The mortar composition of claim 1,
상기 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물은,
경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물의 100중량부에 대하여 물 20~50중량부를 혼합하는 것을 특징으로 하는 경량 및 친환경 폴리머 시멘트 단면복구 모르타르 조성물.The method according to claim 1,
The lightweight and environmentally friendly polymeric cement rescue mortar composition comprises
A lightweight and environmentally friendly polymer cement cross-section recovery mortar composition characterized by comprising 20 to 50 parts by weight of water per 100 parts by weight of the mortar composition.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101953870B1 (en) | 2017-11-24 | 2019-03-04 | 금오공과대학교 산학협력단 | Cement composite using cellulose nanocrystal(cnc) and manufacturing method thereof |
| CN109626920A (en) * | 2019-03-01 | 2019-04-16 | 潘瑞生 | A kind of concrete road surface material for quickly repairing and preparation method with high intensity and endurance quality |
| CN110330286A (en) * | 2019-05-24 | 2019-10-15 | 河北晨阳工贸集团有限公司 | A kind of single polymer cement waterproofing mortar and preparation method thereof |
| KR102106467B1 (en) * | 2019-12-11 | 2020-05-08 | 주식회사 호은건설 | Mortar composition comprising waste ston powder for repairing and restoring the surface of concrete structures and the repairing and restoring construction method using ttherof |
| KR20200103407A (en) | 2019-02-25 | 2020-09-02 | 금오공과대학교 산학협력단 | Engineered Cementitious Composite using Cellulose Nanocrystal and Manufacturing method thereof |
| CN112313184A (en) * | 2018-04-27 | 2021-02-02 | Gcp应用技术有限公司 | High surface area inducer for cementitious aggregate production |
| CN112777983A (en) * | 2021-01-08 | 2021-05-11 | 北京工业大学 | Concrete rapid repairing material and preparation method thereof |
| KR102324112B1 (en) * | 2020-11-11 | 2021-11-11 | 경기대학교 산학협력단 | Halophilic slime forming bacterium base section repair material |
| CN113800813A (en) * | 2021-10-12 | 2021-12-17 | 江西秀川科技有限公司 | Recycled aggregate reinforced slurry and preparation method thereof |
| KR102365874B1 (en) * | 2021-06-16 | 2022-02-24 | 주식회사 제이엠이앤씨 | Anti-corrosion and lightweight polymer mortar components for repair of deteriorated concrete structures |
| CN114409293A (en) * | 2020-10-28 | 2022-04-29 | 韩国科学技术研究院 | Titanium dioxide dispersion composition for concrete bonding and method for fixing titanium dioxide nanoparticles on concrete surface using same |
| KR102482786B1 (en) * | 2021-10-08 | 2022-12-30 | 경기대학교 산학협력단 | Halophilic slime forming bacteria-based repair materials |
| CN117401944A (en) * | 2023-11-06 | 2024-01-16 | 广州航海学院 | Cement-based intelligent material and preparation method thereof |
| KR102683400B1 (en) | 2022-12-23 | 2024-07-12 | 경기대학교 산학협력단 | Salt resistant section repair method using coating technique of metal chloride compound lowering bacterium culture medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101953870B1 (en) | 2017-11-24 | 2019-03-04 | 금오공과대학교 산학협력단 | Cement composite using cellulose nanocrystal(cnc) and manufacturing method thereof |
| CN112313184A (en) * | 2018-04-27 | 2021-02-02 | Gcp应用技术有限公司 | High surface area inducer for cementitious aggregate production |
| KR20200103407A (en) | 2019-02-25 | 2020-09-02 | 금오공과대학교 산학협력단 | Engineered Cementitious Composite using Cellulose Nanocrystal and Manufacturing method thereof |
| CN109626920A (en) * | 2019-03-01 | 2019-04-16 | 潘瑞生 | A kind of concrete road surface material for quickly repairing and preparation method with high intensity and endurance quality |
| CN110330286A (en) * | 2019-05-24 | 2019-10-15 | 河北晨阳工贸集团有限公司 | A kind of single polymer cement waterproofing mortar and preparation method thereof |
| KR102106467B1 (en) * | 2019-12-11 | 2020-05-08 | 주식회사 호은건설 | Mortar composition comprising waste ston powder for repairing and restoring the surface of concrete structures and the repairing and restoring construction method using ttherof |
| CN114409293A (en) * | 2020-10-28 | 2022-04-29 | 韩国科学技术研究院 | Titanium dioxide dispersion composition for concrete bonding and method for fixing titanium dioxide nanoparticles on concrete surface using same |
| KR102324112B1 (en) * | 2020-11-11 | 2021-11-11 | 경기대학교 산학협력단 | Halophilic slime forming bacterium base section repair material |
| WO2022102882A1 (en) * | 2020-11-11 | 2022-05-19 | 경기대학교 산학협력단 | Cross section repair material based on halophilic slime-forming bacteria |
| CN112777983A (en) * | 2021-01-08 | 2021-05-11 | 北京工业大学 | Concrete rapid repairing material and preparation method thereof |
| KR102365874B1 (en) * | 2021-06-16 | 2022-02-24 | 주식회사 제이엠이앤씨 | Anti-corrosion and lightweight polymer mortar components for repair of deteriorated concrete structures |
| KR102482786B1 (en) * | 2021-10-08 | 2022-12-30 | 경기대학교 산학협력단 | Halophilic slime forming bacteria-based repair materials |
| CN113800813A (en) * | 2021-10-12 | 2021-12-17 | 江西秀川科技有限公司 | Recycled aggregate reinforced slurry and preparation method thereof |
| KR102683400B1 (en) | 2022-12-23 | 2024-07-12 | 경기대학교 산학협력단 | Salt resistant section repair method using coating technique of metal chloride compound lowering bacterium culture medium |
| CN117401944A (en) * | 2023-11-06 | 2024-01-16 | 广州航海学院 | Cement-based intelligent material and preparation method thereof |
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