KR20210072165A - A composite of earthquake-resistant mortar with high strength and high elasticity properties by using eco-friendly cement - Google Patents
A composite of earthquake-resistant mortar with high strength and high elasticity properties by using eco-friendly cement Download PDFInfo
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- 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
- C04B28/04—Portland cements
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
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- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
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- C04B18/061—Ashes from fluidised bed furnaces
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
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- C04B18/08—Flue dust, i.e. fly ash
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- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
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- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/0093—Aluminates
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- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/02—Elements
- C04B22/04—Metals, e.g. aluminium used as blowing agent
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- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/22—Natural resins, e.g. rosin
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- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
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- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
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- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2053—Earthquake- or hurricane-resistant materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
Description
본 발명은 친환경 시멘트를 이용한 고강도, 고탄성 특성을 갖는 내진모르타르 조성물에 관한 것으로, 우수한 압축강도 및 휨 강도를 구비함과 동시에, 탄성효과가 우수하고, 열화 콘크리트의 보수 보강용으로 활용할 수 있을 뿐 아니라 콘크리트의 내구성 향상을 위한 콘크리트 표면 보호 도막층의 생성에 유리한 내진 모르타르 조성물에 관한 것이다. 본 발명의 내진 모르타르는 고탄성에 의해 콘크리트 구조물의 변형에 의한 균열 추종성이 우수하고, 콘크리트 구조물의 보, 기둥 등에 사용되어 지진 시 발생할 수 있는 변형에 의한 콘크리트 파괴를 방지할 뿐 아니라, 콘크리트 구조물의 표면에 사용되어 열악한 환경 조건(염해, 중성화 등)에 의한 콘크리트의 열화를 방지함으로서 콘크리트 구조물의 내구성능을 향상시킬 뿐 아니라, 열화되어 내구성능이 저하된 콘크리트 구조물의 보수 보강용 및 지반 안정화 및 지반 보강용으로 사용할 수 있는 장점이 있다.The present invention relates to an earthquake-resistant mortar composition having high strength and high elasticity using eco-friendly cement, and has excellent compressive and flexural strength, has excellent elastic effect, and can be used for repair and reinforcement of deteriorated concrete, as well as It relates to an earthquake-resistant mortar composition advantageous for the production of a concrete surface protective coating film for improving the durability of concrete. The seismic mortar of the present invention has excellent crack followability due to deformation of concrete structures due to its high elasticity, and is used for beams and columns of concrete structures to prevent concrete destruction due to deformation that may occur during an earthquake, as well as the surface of concrete structures It is used to improve the durability of concrete structures by preventing deterioration of concrete due to poor environmental conditions (salt damage, neutralization, etc.), as well as for repair and reinforcement of deteriorated concrete structures with reduced durability and for stabilizing the ground and reinforcing the ground. It has the advantage that it can be used as
일반적으로 콘크리트 구조물은 중성화, 염해, 화학적 침식, 동결 융해, 시공 불량 등의 열화 요인으로 콘크리트 탈락, 철근 부식 등이 발생하면서 콘크리트 구조물의 내구성은 물론 구조적 안전성까지 위협을 받게 된다. 따라서 이러한 콘크리트 구조물의 열화가 계속 진행되면 결국 구조물의 붕괴를 초래할 위험성이 있기 때문에 지속적으로 관리하고 보수할 필요가 있다.In general, the durability of concrete structures as well as structural safety are threatened by deterioration factors such as neutralization, salt damage, chemical erosion, freeze-thaw, and poor construction, resulting in concrete dropout and corrosion of reinforcing bars. Therefore, if the deterioration of the concrete structure continues, there is a risk of eventually causing the collapse of the structure, so it is necessary to continuously manage and repair it.
즉, 콘크리트 구조물의 박리, 결함, 균열 등은 열화 요인의 이동을 용이하게 하여 열화의 진행을 촉진시키므로 철근 콘크리트 구조물의 안전성 및 성능 확보를 위해서는 열화 초기에 보수를 실시하여 더 이상의 열화의 진행을 억제하고 내구성능을 향상시킬 필요가 있다.In other words, delamination, defects, cracks, etc. of concrete structures facilitate the movement of deterioration factors and accelerate the progress of deterioration. In order to secure the safety and performance of reinforced concrete structures, repair at the initial stage of deterioration to suppress further deterioration. and to improve durability.
한편, 지진은 자연재해 중에서 인명 및 재산피해 면에서 막대한 피해를 줄 수 있고 지각 변동에 따른 건물의 흔들림 및 건물의 붕괴는 인간에게 공포감을 줄 수 있는 자연재해이다.On the other hand, earthquakes can cause enormous damage in terms of human life and property damage among natural disasters, and shaking and collapse of buildings due to tectonic changes are natural disasters that can give people a sense of fear.
이러한 지진에 대해서는 주로 일본과 같은 지진대에 속하는 국가의 경우는 철저하게 내진 설계를 하고 있는데 비해, 지진대에서 약간 떨어져 있는 우리나라의 경우는 철저한 내진 설계가 반영되지 않고 있는 상황이며, 내진 설계에 대한 필요성이 간과되고 있는 상황이다.For these earthquakes, countries belonging to the earthquake zone such as Japan thoroughly design earthquake resistance, whereas in Korea, which is a little far from the earthquake zone, thorough earthquake resistance design is not reflected, and the need for earthquake resistance design is not reflected. situation being overlooked.
그러나 2016년 경주 지역에서 발생한 진도 5.8의 지진과 2017년 포항 지역에서 발생한 진도 5.6의 지진으로 인해 우리나라도 더 이상 지진의 안전 지대가 아님을 인식하게 되면서 주로 학교나 빌딩, 지하철, 철도 등 다중이 이용하는 시설에 대한 내진 보강의 필요성이 대두되고 있다.However, due to the earthquake with a magnitude of 5.8 in Gyeongju in 2016 and an earthquake of magnitude 5.6 in Pohang in 2017, Korea has come to recognize that it is no longer a safe zone for earthquakes, and is mainly used by schools, buildings, subways, and railways. The need for seismic reinforcement of facilities is emerging.
우리나라는 1996년 이후 건축물의 내진 규준이 강화되어 5층 이상의 공동 주택에 대해서는 내진 설계를 실시하도록 하고 있으며, 최근에는 모든 신축 공동주택에 대해 내진 규정을 적용하도록 의무화하고 있다.In Korea, earthquake-resistance standards for buildings have been strengthened since 1996, requiring seismic design for apartment houses with 5 stories or more, and recently, it is mandatory to apply earthquake-resistance rules to all newly built apartment houses.
그러나, 이러한 내진 설계의 의무화가 시행되기 이전에 건축된 구조물의 경우 내진 설계가 반영되어 있지 않기 때문에 보강 공사를 통한 내진 시공이 반영되고 있는 상황인데, 내진 시공법으로는 주로 골조만 남기고 철거한 후 골조 위에 내진 성능을 갖는 고강도의 콘크리트나 모르타르를 덧씌우는 방식으로 내진 보강 공사가 진행되고 있다. 이 경우 내진 성능을 갖는 콘크리트(또는 모르타르)와 기존 구조체의 콘크리트 간의 부착성과 내진 재료 (콘크리트 또는 모르타르)의 압축강도 등 물성이 확보되어야 하는데, 이에 대한 기술들이 많이 제안되고 있는 상황이다. (예를 들어, 대한민국 등록특허 제10-1655108호, 제10-1746220호, 제10-0899843호, 제10-1419445호 등)However, in the case of structures built before the compulsory seismic design, seismic design is not reflected, so seismic construction through reinforcement construction is being reflected. Seismic reinforcement work is in progress by overlaying high-strength concrete or mortar with seismic performance on top. In this case, physical properties such as adhesion between concrete (or mortar) with seismic performance and the concrete of the existing structure and compressive strength of seismic materials (concrete or mortar) must be secured, and many technologies for this are being proposed. (For example, Korean Patent Nos. 10-1655108, 10-1746220, 10-0899843, 10-1419445, etc.)
그러나, 기존 기술들에서 제안된 내진 재료는 조성물 간의 치밀성이 부족하여 구체와의 부착성과 일체성 확보 효과가 충분하지 않아 부착강도, 압축강도, 휨강도 등의 물성에 대한 충분한 확보가 어렵고 발수성, 내수성 등의 물성이 충분하지 않아 보강 효과가 장기간 유지되기 어려운 면이 있어 이에 대한 보완의 필요성이 있다.However, since the seismic materials proposed in the existing technologies lack the compactness between the compositions, the effect of securing adhesion and integrity with the sphere is not sufficient, so it is difficult to secure sufficient physical properties such as adhesion strength, compressive strength, and bending strength, and water repellency, water resistance, etc. It is difficult to maintain the reinforcing effect for a long time due to insufficient physical properties, so there is a need to supplement this.
특히, 진동이 심한 철도 현장이나, 철도 관련 콘크리트 구조물에 있어서는 부착강도 등의 물성이 제한되어 콘크리트 부분 탈락이 발생하는 등 내구성이 부족하여 이에 대한 개선의 필요성이 큰 상황이다.In particular, in railway sites with severe vibration or in railway-related concrete structures, physical properties such as adhesion strength are limited, and the durability is insufficient, such as falling off of concrete parts, and there is a great need for improvement.
본 발명은, 상기와 같은 종래기술의 상황을 고려하여 개발된 것으로서, 내진보강공사가 필요한 콘크리트 구조물에 사용함에 있어, 발수효과가 우수하고 흡수율을 낮게 유지할 수 있으므로 내구성이 우수하고, 부착강도, 압축강도, 휨강도 등의 물리적 특성이 우수하며, 모르타르의 단위 중량을 줄이고 초기 및 장기 부착성능을 향상시켜 콘크리트 구조물에 대한 내진 보강 시공성이 매우 우수한 동시에, 탄성 및 부착성능 강화를 위하여 유기 용제를 사용하지 않고 천연 재료를 사용함으로서 친환경적이며, 고탄성 응력이 우수한 천연 재료가 내진 모르타르의 미세 틈새를 치밀하게 메울 수 있으므로 지진 진동 및 각종 응력을 균일하게 흡수하여 구조물의 내진 성능을 강화할 수 있는 콘크리트 구조물 보수 보강 및 내진 성능 향상 및 지반보강용과 지반 안정화용으로 사용될 수 있는 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물을 제공하고자 한다.The present invention was developed in consideration of the situation of the prior art as described above, and when used in a concrete structure requiring seismic reinforcement, it has excellent water repellency and can keep water absorption low, so it has excellent durability, adhesion strength, compression It has excellent physical properties such as strength and flexural strength. It reduces the unit weight of mortar and improves initial and long-term adhesion performance to provide excellent seismic reinforcement workability for concrete structures. At the same time, organic solvents are not used to enhance elasticity and adhesion performance. By using natural materials, it is eco-friendly and natural materials with excellent high elastic stress can densely fill the fine gaps in the seismic mortar, so it can absorb seismic vibrations and various stresses evenly to enhance the seismic performance of the concrete structure. An object of the present invention is to provide a high-strength elastic earthquake-resistant mortar composition using eco-friendly cement that can be used for performance improvement, ground reinforcement, and ground stabilization.
상기 과제를 달성하기 위하여 본 발명의 조성물은,In order to achieve the above object, the composition of the present invention,
(1) 고로슬래그와 미분탄 석탄회 및 페트로 코크스를 원료로 사용하는 유동층상 보일러 탈황석고계 반응 활성화제로 구성된 친환경 시멘트 40 내지 70 중량%;(1) 40 to 70 wt% of eco-friendly cement composed of blast furnace slag, pulverized coal ash, and a desulfurized gypsum-based reaction activator for a fluidized bed boiler using pulverized coal ash and petrocoke as raw materials;
(2) 3호 규사(1.5~2.5mm)와 4호 규사(1.20~1.50mm)와 5호 규사(0.7~1.2mm)를 합한 규사 총량이 20 내지 40 중량%;(2) 20 to 40 wt% of the total amount of silica sand of No. 3 (1.5-2.5 mm), No. 4 (1.20-1.50 mm) and No. 5 (0.7-1.2 mm);
(3) 12CaO·7Al2O3 함량이 70 중량% 이상인 아토마이징 공법에 의해 제조되는 칼슘 알루미네이트 화합물 5 내지 9 중량%;(3) 5 to 9% by weight of a calcium aluminate compound prepared by an atomizing method having a 12CaO·7Al2O3 content of 70% by weight or more;
(4) free-CaO 함량이 3내지 30 중량%인 유동층상 보일러 석탄회(fly ash) 4.9 내지 10 중량%;(4) 4.9 to 10% by weight of fluidized bed boiler fly ash having a free-CaO content of 3 to 30% by weight;
(5) 알루미늄 금속 분말 0.1 내지 1.0 중량%;(5) 0.1 to 1.0% by weight of aluminum metal powder;
(6) 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 5 내지 20 중량부의 섬유가 혼합되며, 통상의 소포제, 증점제, 분산제 등의 첨가제가 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 각각 1중량부 더 첨가되는 것으로 구성되는 분체 조성물(A)과,(6) 5 to 20 parts by weight of fibers are mixed with respect to 100 parts by weight of the total of the compositions (1) to (5), and additives such as conventional antifoaming agents, thickeners, and dispersants are added to the total of 100 parts by weight of the composition (1) to (5) A powder composition (A) which is further added by 1 part by weight based on parts by weight,
(1) 친수성 폴리머 수지인 폴리비닐 알코올 10% 수용액 50 내지 70중량%;(1) 50 to 70% by weight of a 10% aqueous solution of polyvinyl alcohol, which is a hydrophilic polymer resin;
(2) 폴리 카르복실 산으로 개질하여 암모니아 냄새를 제거한 천연 고무 라텍스 조성물 30-50 중량%;(2) 30-50 wt% of a natural rubber latex composition modified with polycarboxylic acid to remove ammonia odor;
(3) 소디움 라우릭 산계 계면활성제가 1 내지 5 중량%; 로 구성되는 액체상 용액(B)으로 구성되며,(3) 1 to 5% by weight of sodium lauric acid-based surfactant; It is composed of a liquid phase solution (B) consisting of
상기 (A) 분말과 (B) 용액이 25 내지 50 중량%로 혼합되는 것으로 구성되는 것을 특징으로 본 발명의 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물을 제공한다.It provides a high-strength elastic earthquake-resistant mortar composition using the eco-friendly cement of the present invention, characterized in that the (A) powder and (B) solution are mixed in an amount of 25 to 50% by weight.
본 발명의 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물은,The high-strength elastic earthquake-resistant mortar composition using the eco-friendly cement of the present invention,
콘크리트 제품 또는 콘크리트 구조물의 표면에 사용되어 우수한 작업성, 부착력, 인장 강도, 내마모성, 내염해성, 중성화 저항성을 가짐으로써Used on the surface of concrete products or concrete structures, it has excellent workability, adhesion, tensile strength, abrasion resistance, salt damage resistance, and neutralization resistance.
콘크리트 제품 및 콘크리트 구조물의 표면에 사용되어 재료와 재료 사이의 부착성을 강화하며, 콘크리트 구조물의 균열을 감소시키며;Used on the surface of concrete products and concrete structures to enhance adhesion between materials and reduce cracks in concrete structures;
콘크리트 구조물의 팽창 수축에 의해서 발생하는 균열에 대한 추종성을 가지므로 구조물 사이의 균열 박리, 탈락을 방지하고, 진동, 하중 및 환경적 영향에 의한 다양한 내구성 저하 요인을 저하시킴으로써 콘크리트 제품 및 콘크리트 구조물의 초기 성능을 유지시키며;Since it has followability to cracks caused by expansion and contraction of concrete structures, it prevents crack separation and separation between structures, and reduces various factors that decrease durability due to vibration, load, and environmental influences. maintain performance;
열화 방지용 표면 코팅재 및 다양한 콘크리트 마감재의 표면 마감재로 사용되어 콘크리트 제품 또는 콘크리트 구조물의 내부 및 외부를 보호함으로써 내수성 및 내구성을 향상시키는 효과를 제공한다.It is used as a surface coating material for preventing deterioration and as a surface finishing material for various concrete finishing materials to provide the effect of improving water resistance and durability by protecting the inside and outside of concrete products or concrete structures.
또한, 우수한 부착성, 압축강도 및 인장강도로 인하여 콘크리트 구조물의 표면에 사용되어, 지진 발생 시에 진동, 하중 및 변형에 의한 콘크리트 구조물의 균열, 박리, 탈락을 방지하는 등 다양한 지진 피해 요인을 방지함으로써 콘크리트 제품 및 콘크리트 구조물의 안전성을 확보할 수 있는 효과가 있다.In addition, due to its excellent adhesion, compressive strength and tensile strength, it is used on the surface of concrete structures to prevent various earthquake damage factors such as cracking, peeling, and dropping of concrete structures due to vibration, load and deformation during earthquakes. This has the effect of securing the safety of concrete products and concrete structures.
또한, 우수한 흐름성, 횡단변형 저항성, 압축강도 및 휨강도로 인하여 지반 보강용 그라우트 모르타르로, 지진 발생 시에 진동, 하중 및 변형에 의한 지반의 변형에 대한 저항성 향상으로 다양한 지진 피해 요인을 방지함으로써 지반 안정성을 확보할 수 있는 효과가 있다.In addition, it is a grout mortar for ground reinforcement due to its excellent flowability, transverse deformation resistance, compressive strength and flexural strength, and it prevents various earthquake damage factors by improving resistance to deformation of the ground due to vibration, load and deformation during earthquakes. It has the effect of ensuring stability.
이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
상기 목적을 달성하기 위하여, 본 발명은 (1) 고로슬래그와 미분탄 석탄회 및 페트로 코크스를 원료로 사용하는 유동층상 보일러 탈황석고계 반응 활성화제로 구성된 친환경 시멘트 40 내지 70 중량%; (2) 3호 규사(1.5~2.5mm)와 4호 규사(1.20~1.50mm)와 5호 규사(0.7~1.2mm)를 합한 규사 총량이 20 내지 40 중량%; (3) 12CaO·7Al2O3 함량이 70 중량% 이상인 슬래그를 아토마이징 공법에 의해 제조되는 칼슘 알루미네이트 화합물 5 내지 9 중량%; (4) free-CaO 함량이 3내지 30 중량%인 유동층상 보일러 석탄회(fly ash) 4.9 내지 10 중량%; (5) 알루미늄 금속 분말 0.1 내지 1.0 중량%; (6) 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 5 내지 20 중량부의 섬유가 혼합되며, 통상의 소포제, 증점제, 분산제 등의 첨가제가 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 각각 1중량부 더 첨가되는 것으로 구성되는 분체 조성물(A)과,In order to achieve the above object, the present invention provides: (1) 40 to 70% by weight of an eco-friendly cement composed of a desulfurized gypsum-based reaction activator in a fluidized bed boiler using blast furnace slag, pulverized coal ash and petrocoke as raw materials; (2) 20 to 40 wt% of the total amount of silica sand of No. 3 (1.5-2.5 mm), No. 4 (1.20-1.50 mm) and No. 5 (0.7-1.2 mm); (3) 5 to 9 wt% of a calcium aluminate compound prepared by atomizing slag having a 12CaO·7Al2O3 content of 70 wt% or more; (4) 4.9 to 10% by weight of fluidized bed boiler fly ash having a free-CaO content of 3 to 30% by weight; (5) 0.1 to 1.0% by weight of aluminum metal powder; (6) 5 to 20 parts by weight of fibers are mixed with respect to 100 parts by weight of the total of the compositions (1) to (5), and additives such as conventional antifoaming agents, thickeners, and dispersants are added to the total of 100 parts by weight of the composition (1) to (5) A powder composition (A) which is further added by 1 part by weight based on parts by weight,
(1) 친수성 폴리머 수지인 폴리비닐 알코올 10% 수용액 50 내지 70중량%; (2) 폴리 카르복실 산으로 개질하여 암모니아 냄새를 제거한 천연 고무 라텍스 조성물 30-50 중량%; (3) 소디움 라우릭 산계 계면활성제가 1 내지 5 중량%; 로 구성되는 액체상 용액(B)으로 구성되며,(1) 50 to 70% by weight of a 10% aqueous solution of polyvinyl alcohol, which is a hydrophilic polymer resin; (2) 30-50 wt% of a natural rubber latex composition modified with polycarboxylic acid to remove ammonia odor; (3) 1 to 5% by weight of sodium lauric acid-based surfactant; It is composed of a liquid phase solution (B) consisting of
상기 (A) 분말 100 중량부에 대하여 (B) 용액이 15 내지 50 중량부로 혼합되는 것을 특징으로 본 발명의 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물을 제공한다.It provides a high-strength elastic earthquake-resistant mortar composition using the eco-friendly cement of the present invention, characterized in that 15 to 50 parts by weight of the (B) solution is mixed with respect to 100 parts by weight of the (A) powder.
상기 (A)에서, (1)항과 (2)항의 결합재와 규사의 혼합은 공지의 기술 범위에 속한다 할 수 있다. 그러나 본 발명에서는 고로슬래그와 미분탄 석탄회 및 페트로 코크스를 원료로 사용하는 유동층상 보일러 탈황 석고계 반응 활성화제로 구성된 친환경 시멘트를 사용하는 것을 특징으로 하며, 친환경 시멘트는 고로슬래그, 유동층상 보일러 석탄회 등 재활용 자원을 원료로 사용하는 이산화탄소 배출 저감형 시멘트인 것을 특징으로 한다. 일반 시멘트를 사용하는 경우, (B)의 액체 성분에 의하여 압축강도, 부착강도 등이 저하될 수 있기 때문에 내진 설계 시에는 부적합한 배합이라 할 수 있다. 내진 설계 시에는 재령 28일에서의 압축강도는 최소한 40 MPa 이상이 발현되어야 하기 때문에 압축강도를 향상 시킬 필요가 있다. 이러한 압축강도 향상의 목적으로 고로슬래그와 미분탄석탄회 및 페트로 코크스를 원료로 사용하는 유동층상 보일러 탈황석고계 반응 활성화제로 구성된 친환경 시멘트 분체의 사용량 증가 및 12CaO·7Al2O3 함량이 70 중량% 이상인 슬래그를 아토마이징 공법으로 분사하여 제조되는 칼슘 알루미네이트 화합물 5 내지 9 중량%를 사용하는 것을 특징으로 한다.In the above (A), it can be said that the mixing of the binder and silica sand of the items (1) and (2) falls within the known technical scope. However, the present invention is characterized by using an eco-friendly cement composed of a desulfurization gypsum-based reaction activator in a fluidized bed boiler using blast furnace slag, pulverized coal ash, and petrocoke as raw materials, and the eco-friendly cement is recycled resources such as blast furnace slag, fluidized bed boiler coal ash It is characterized as a carbon dioxide emission reduction type cement using as a raw material. In case of using general cement, it can be said that it is inappropriate for seismic design because the compressive strength and adhesion strength may be lowered by the liquid component of (B). In seismic design, the compressive strength at 28 days of age must be at least 40 MPa, so it is necessary to improve the compressive strength. For the purpose of improving the compressive strength, increase the use of eco-friendly cement powder composed of desulfurization gypsum reaction activator in a fluidized bed boiler using blast furnace slag, pulverized coal ash and petrocoke as raw materials, and atomizing slag with 12CaO·7Al2O3 content of 70 wt% or more It is characterized in that 5 to 9% by weight of the calcium aluminate compound prepared by spraying the method is used.
칼슘 알루미네이트 화합물을 5 중량% 미만 사용하면 압축강도 보상 및 향상 효과가 없으며, 9 중량% 초과하여 사용하면 작업성이 저하된다. 바람직하게는 6 내지 8 중량%가 적당하다.When the calcium aluminate compound is used in less than 5% by weight, there is no effect of compensating and improving the compressive strength, and when it is used in excess of 9% by weight, workability is deteriorated. Preferably 6 to 8% by weight is suitable.
칼슘 알루미네이트 화합물은 12CaO·7Al2O3 함량이 70 중량% 이상 함유하고 있는 것을 사용하여야 하는데, 70 중량% 미만이면 압축강도 향상 효과가 없다.As the calcium aluminate compound, 12CaO·7Al2O3 content of 70% by weight or more should be used. If it is less than 70% by weight, there is no effect of improving the compressive strength.
본 발명에서는 free-CaO 함량이 3내지 30 중량%인 유동층상 보일러 석탄회(fly ash) 4.9 내지 10 중량% 사용하는 것을 특징으로 하는데, 내진용 모르타르에서 중요한 것은 콘크리트 구조물과 외부 보강용 재료(철판, 아연판 등)와의 사이에 재료가 밀착되는 것이 중요하다. 재료가 충분히 밀착되지 않으면 재료 사이의 공간에 의해 지진 시 균열 및 파괴가 쉽게 발생할 수 있다. 따라서 재료의 밀착성을 위하여, free-CaO가 물과의 반응에 의해 Ca(OH)2로 전이되는 과정이 필요하다. CaO가 Ca(OH)2로 전이되면서 부피 팽창에 의해 갇혀진 공간에서의 밀착효과가 발생하게 되면 이로 인하여 콘크리트 표면과 외부 보강 재료(철판, 아연판 등) 사이의 공간을 충분히 밀착하게 된다.In the present invention, it is characterized in that 4.9 to 10% by weight of the fluidized bed boiler fly ash having a free-CaO content of 3 to 30% by weight is used, and the important thing in the seismic mortar is the concrete structure and the external reinforcement material (iron plate, It is important that the material adheres with the zinc plate etc.). If the materials are not closely adhered enough, cracks and fractures can easily occur during earthquakes due to the space between the materials. Therefore, for the adhesion of the material, a process in which free-CaO is converted into Ca(OH)2 by reaction with water is required. When CaO is transferred to Ca(OH)2 and a close contact effect occurs in the confined space due to volume expansion, the space between the concrete surface and the external reinforcement material (iron plate, zinc plate, etc.) is sufficiently closely adhered.
유동층상 보일러 석탄회(fly ash)의 free-CaO 함량이 3 중량% 미만이면 팽창효과가 약하여 밀착효과가 나타나지 않으며, 30 중량%를 초과하면 지나친 팽창으로 변형이 나타날 수 있다. 바람직하게는 5 내지 20 중량%가 적당하다.If the free-CaO content of the fluidized bed boiler fly ash is less than 3 wt%, the expansion effect is weak and the adhesion effect does not appear, and if it exceeds 30 wt%, deformation may occur due to excessive expansion. Preferably, 5 to 20% by weight is suitable.
또한 유동층상 보일러 석탄회(fly ash)는 4.9 내지 10 중량% 사용하는데 4.9 중량% 미만이면 팽창효과가 약하여 밀착효과가 나타나지 않으며, 10 중량%를 초과하면 지나친 팽창으로 변형이 나타날 수 있다. 바람직하게는 5.5 내지 9.0 중량%가 적당하다.In addition, the fluidized bed boiler fly ash is used in an amount of 4.9 to 10% by weight. If it is less than 4.9% by weight, the expansion effect is weak and the adhesion effect does not appear, and if it exceeds 10% by weight, deformation may occur due to excessive expansion. Preferably 5.5 to 9.0% by weight is suitable.
또한, 본 발명에서는 알루미늄 금속 분말 0.1 내지 1.0 중량%를 사용하는 것을 특징으로 하는데, 금속 알루미늄 분말은 시멘트 재료의 수화(hydration) 시 알칼리 성분에 의하여 수소(H2) 가스가 발생한다. 이때 발생하는 수소 가스는 시멘트 재료 내부에서 기공을 만들어 시멘트 재료가 수축하는 것을 방지하게 된다. 금속 알루미늄 분말에 의해 생성되는 수소 가스에 의해 시멘트 재료는 수축이 방지되고, 본 발명의 내진 모르타르 조성물에 의한 콘크리트 구조물과 외부 보강용 재료(철판, 아연판 등)와의 사이에 재료가 밀착되는 밀착 효과를 향상시키게 된다. 금속 알루미늄 분말의 사용량이 0.1 중량% 미만이면 수소가스 발생 효과가 없으며, 1.0 중량%를 초과하면 경제적으로 바람직하지 않다. 바람직하게는 0.2 내지 0.8 중량%가 적당하다.In addition, in the present invention, it is characterized in that 0.1 to 1.0 wt% of the aluminum metal powder is used, and the metal aluminum powder generates hydrogen (H2) gas by an alkali component during hydration of the cement material. The hydrogen gas generated at this time creates pores inside the cement material to prevent the cement material from shrinking. The cement material is prevented from shrinking by the hydrogen gas generated by the metal aluminum powder, and the material for adhesion between the concrete structure and the external reinforcement material (iron plate, zinc plate, etc.) by the earthquake-resistant mortar composition of the present invention is achieved. will improve If the amount of the metal aluminum powder used is less than 0.1% by weight, there is no effect of generating hydrogen gas, and when it exceeds 1.0% by weight, it is not economically preferable. Preferably 0.2 to 0.8% by weight is suitable.
또한 본 발명에서는, 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 5 내지 20 중량부의 섬유가 혼합되는 것을 특징으로 하는데, 섬유의 종류로는 나일론 섬유, 프로필렌 섬유, 강섬유, 목질 섬유 등이 있으나 특별히 특정한 섬유로 한정하지는 않는다. 섬유의 사용은 지진 시, 지진에 의해 발생하는 변형, 내진 모르타르의 탈락 등을 방지하며, 내진 모르타르에서 인장강도 유지에 효과가 있다. 섬유의 사용량은 (A) 분체 조성물에서 (1)~(5) 조성물 합계 100 중량부에 대하여 5 내지 20 중량부의 섬유가 혼합되는 것을 특징으로 하는데, 5 중량부 미만이면 인장력 발현이 약하며, 20 중량부를 초과하면 작업성 저하 및 경제성 부분에서 바람직하지 않다. 바람직하게는 7 내지 15 중량%가 적당하다.In addition, in the present invention, 5 to 20 parts by weight of fibers are mixed with respect to 100 parts by weight of the total of the compositions (1) to (5). As the types of fibers, nylon fibers, propylene fibers, steel fibers, wood fibers, etc. However, it is not particularly limited to a specific fiber. The use of fiber prevents deformation and seismic mortar fall-off during earthquakes, and is effective in maintaining tensile strength in seismic mortar. The amount of fiber used is characterized in that 5 to 20 parts by weight of fibers are mixed with respect to 100 parts by weight of the total (1) to (5) composition in the (A) powder composition. If it is less than 5 parts by weight, the tensile force expression is weak, and 20 parts by weight When it exceeds the part, it is undesirable in terms of workability deterioration and economic feasibility. Preferably, 7 to 15% by weight is suitable.
또한 본 발명에서는 통상의 소포제, 분산제, 증점제 등을 포함하는 첨가제가 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 0.1 내지 5중량부 더 첨가되는 것을 특징으로 하는데, 이는 과다한 기포의 생성으로 압축강도가 저하되는 것을 방지하기 위하여 소포제를 사용하는 것이며, 소포제로는 실리콘계 소포제가 바람직하나, 실리콘계 소포제로 한정하는 것은 아니며, 과다한 기포의 생성을 제어할 수 있는 소포제는 어떤 다른 종류도 사용이 가능하다. 분산제는 본 발명의 내진 모르타르의 작업성을 위하여 사용하는 것이며, 분산제의 종류는 공지의 나프탈렌-설포네이트 축합물 계가 바람직하나, 나프탈렌-설포네이트 축합물 게로 한정하지는 않으며, 작업성을 향상시킬 수 있는 분산제는 어떤 다른 종류도 사용이 가능하다. 상기 소포제, 분산제, 및 증점제는 상기 첨가제 함량 범위 내에서 각각 0.5 내지 2 중량부로 사용될 수 있다.In addition, in the present invention, it is characterized in that 0.1 to 5 parts by weight of an additive including a conventional antifoaming agent, dispersing agent, thickener, etc. is further added based on 100 parts by weight of the total composition (1) to (5), which generates excessive bubbles. Anti-foaming agent is used to prevent the compressive strength from being lowered due to this, and a silicone-based anti-foaming agent is preferable as an anti-foaming agent, but it is not limited to a silicone-based anti-foaming agent, and any other type of anti-foaming agent that can control the generation of excessive air bubbles is not used. It is possible. The dispersant is used for the workability of the earthquake-resistant mortar of the present invention, and the type of the dispersant is preferably a known naphthalene-sulfonate condensate, but is not limited to a naphthalene-sulfonate condensate, and can improve workability. Any other kind of dispersant may be used. The antifoaming agent, dispersing agent, and thickening agent may be used in an amount of 0.5 to 2 parts by weight, respectively, within the content range of the additive.
한편, 본 발명에서는 상기의 (A) 분체 조성물에 대하여 액체상의 조성물(B)를 혼합하여 사용하는 것을 특징으로 한다.On the other hand, in the present invention, it is characterized in that the liquid composition (B) is mixed with the powder composition (A) above.
액체상의 조성물(B)에서, 친수성 폴리머 수지인 폴리비닐 알코올 10% 수용액 50 내지 70중량% 사용하는 것을 특징으로 하는데, 친수성 폴리머 수지인 폴리비닐 알코올은 접착성 재료로 알려진 공지의 재료이다. 본 발명에서도 친수성 폴리머 수지인 폴리비닐 알코올은 접착성능 개선을 위하여 사용되는 것을 특징으로 한다. 친수성 폴리머 수지인 폴리비닐 알코올이 사용되어 바탕면인 콘크리트 구조물과 외부 보강용 재료(철판, 아연판 등)와의 접착성을 강화하는 역할을 수행한다. 친수성 폴리머 수지인 폴리비닐 알코올 사용량이 50 중량% 미만이면 접착성능 향상이 미약하여 효과가 없으며, 70 중량% 초과하면 작업성이 저하되고 경제적으로 바람직하지 않다. 바람직하게는 55 내지 65 중량%가 적당하다.In the liquid composition (B), 50 to 70% by weight of a 10% aqueous solution of polyvinyl alcohol as a hydrophilic polymer resin is used, and polyvinyl alcohol as a hydrophilic polymer resin is a known material known as an adhesive material. Polyvinyl alcohol, which is a hydrophilic polymer resin, is also used in the present invention to improve adhesive performance. Polyvinyl alcohol, a hydrophilic polymer resin, is used to strengthen the adhesion between the concrete structure as the base surface and external reinforcement materials (iron plate, zinc plate, etc.). If the amount of polyvinyl alcohol used as a hydrophilic polymer resin is less than 50 wt %, the adhesive performance improvement is weak and there is no effect, and if it exceeds 70 wt %, workability is reduced and economically undesirable. Preferably 55 to 65% by weight is suitable.
본 발명에서, 폴리 카르복실산으로 개질하여 암모니아 냄새를 제거한 탄성 개질 천연 고무 라텍스 조성물 29-50 중량%를 사용하는 것을 특징으로 한다. 본 발명에서의 탄성 개질 천연 고무 라텍스의 사용은 고무 라텍스의 탄성 및 인장력을 활용하는 것으로서 내진 모르타르와 혼합되어 내진 모르타르의 탄성력을 향상 시키고, 부착력을 향상시키는 역할을 한다. 탄성 개질 천연 고무 라텍스의 사용량이 29 중량% 미만 이면 탄성력이 약하고 부착력이 저하된다. 천연 고무 라텍스의 사용량이 50 중량%를 초과하면 지나친 점착성으로 인하여 작업성이 저하되 내진 모르타르의 경화특성을 저해하게 된다. 바람직하게는 35 내지 45 중량%가 적당하다.In the present invention, 29-50 wt% of an elastically modified natural rubber latex composition modified with polycarboxylic acid to remove ammonia odor is used. The use of the elastically modified natural rubber latex in the present invention is to utilize the elasticity and tensile force of the rubber latex and is mixed with the earthquake-resistant mortar to improve the elasticity of the earthquake-resistant mortar and to improve adhesion. If the amount of the elastically modified natural rubber latex used is less than 29% by weight, the elasticity is weak and the adhesion is reduced. When the amount of natural rubber latex exceeds 50% by weight, workability is deteriorated due to excessive tackiness, but the hardening properties of the earthquake-resistant mortar are impaired. Preferably 35 to 45% by weight is suitable.
한편, 천연 고무 라텍스의 콘크리트에의 사용은 작업자의 환경을 고려할 때 천연 라텍스에 함유되어 있는 암모니아 냄새로 인하여 바람직하지 못하다. 따라서 천연 라텍스를 사용할 경우 라텍스에 함유되어 있는 암모니아 냄새를 제거하는 것이 바람직하다. 본 발명에서는 폴리 카르복실 산으로 천연 라텍스를 개질하여 암모니아를 제거한 것을 사용하는 것을 특징으로 한다. 천연 라텍스에서의 암모니아는 천연에서 고무를 채취할 때 응고 방지를 위하여 사용되는 것으로서, 암모니아는 음이온 전하를 가지고 있다. 폴리 아크릴 산으로 개질하면 암모니아 음이온을 고정화하여 복합 염을 생성함으로서 암모니아 냄새를 제거할 수 있다.On the other hand, the use of natural rubber latex in concrete is not preferable due to the ammonia smell contained in the natural latex in consideration of the environment of the worker. Therefore, when using natural latex, it is preferable to remove the ammonia smell contained in the latex. In the present invention, it is characterized in that ammonia is removed by modifying natural latex with polycarboxylic acid. Ammonia in natural latex is used to prevent coagulation when extracting rubber from nature, and ammonia has an anionic charge. Modification with polyacrylic acid can remove ammonia odor by immobilizing ammonia anions to form complex salts.
본 발명에서는, 소디움 라우릭 산계 계면활성제가 1 내지 5 중량% 사용하는 것을 특징으로 한다. 계면활성제는 내진 모르타르 내부에서 기포를 생성하고, 생성된 기포의 볼 베어링(ball bearing) 효과에 의하여 작업성 및 주입성을 원활하게 하는 특성을 발휘한다. 계면활성제가 1 중량% 미만이면 작업성 증진 효과가 없으며, 5 중량%를 초과하면 지나친 기포의 발생으로 압축강도가 저하될 수 있다. 바람직하게는 1. 5 내지 4.0 중량%가 적당하다.In the present invention, 1 to 5% by weight of sodium lauric acid-based surfactant is used. The surfactant generates bubbles inside the earthquake-resistant mortar, and exhibits the properties of smoothing workability and injectability by the ball bearing effect of the generated bubbles. If the surfactant is less than 1% by weight, there is no effect of improving workability, and if it exceeds 5% by weight, the compressive strength may be lowered due to the generation of excessive bubbles. Preferably 1.5 to 4.0% by weight is suitable.
본 발명에서는 분체인 (A)와 액체인(B)를 혼합하여 사용하는 것을 특징으로 하는데, 혼합 비율은 (A) 분말 100 중량부에 대하여 (B) 용액이 15 내지 50 중량부로 혼합되는 것을 특징으로 한다. (A) 분말 100 중량부에 대하여 (B) 용액이 15 중량부 이하이면 내진 모르타르의 혼합이 안되고, 접착성, 부착강도, 주입성(작업성) 등이 저하된다. 또한 (A) 분말 100 중량부에 대하여 (B) 용액이 50 중량부 이상이면, 압축강도 저하 등의 문제점이 발생할 수 있다. 바람직하게는 (A) 분말 100 중량부에 대하여 (B) 용액이 20 내지 45 중량부가 적당하다.In the present invention, it is characterized in that the powder (A) and the liquid (B) are mixed and used, and the mixing ratio is 15 to 50 parts by weight of the (B) solution based on 100 parts by weight of the (A) powder. do it with (A) If the solution (B) is 15 parts by weight or less with respect to 100 parts by weight of the powder, the seismic mortar cannot be mixed, and adhesion, adhesion strength, injectability (workability), etc. are deteriorated. In addition, if the (B) solution is 50 parts by weight or more based on 100 parts by weight of the powder (A), problems such as a decrease in compressive strength may occur. Preferably, 20 to 45 parts by weight of the (B) solution is suitable based on 100 parts by weight of the (A) powder.
이하, 본 발명을 실시예 및 비교예를 이용하여 더욱 상세하게 설명한다. 그러나 하기 실시예는 본 발명을 예시하기 위한 것으로서 본 발명은 하기 실시예에 의해 한정되지 않으며, 다양하게 수정 및 변경될 수 있다. 본 발명의 범위는 후술하는 특허청구범위의 기술적 사상에 의해 정해질 것이다.Hereinafter, the present invention will be described in more detail using Examples and Comparative Examples. However, the following examples are intended to illustrate the present invention, and the present invention is not limited by the following examples, and may be variously modified and changed. The scope of the present invention will be determined by the spirit of the claims to be described later.
실시예 1Example 1
본 발명의 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물에 대한 배합비율을 [표 1]에 나타내었다. 비교예1은 시중에서 판매되는 한일시멘트사의 그라우트용 시멘트 모르타르(레미탈)을 사용하였다. 한일시멘트사의 그라우트용 시멘트 모르타르(한일레미탈)은 시멘트와 규사 및 각종 화학 첨가제가 혼합되어 있는 모르타르로서 물만 혼합하여 사용하는 것으로 되어 있다.[Table 1] shows the mixing ratio of the high-strength elastic earthquake-resistant mortar composition using the eco-friendly cement of the present invention. In Comparative Example 1, commercially available cement mortar (Remittal) for grout from Hanil Cement was used. Hanil Cement's cement mortar for grout (Hanil Remittal) is a mortar in which cement, silica sand and various chemical additives are mixed, and only water is mixed for use.
실험 진행은 KS F 4042-2012(콘크리트 구조물 보수용 폴리머 시멘트 모르타르) 규정에 의해 실험을 진행하였다.Experiments were conducted in accordance with KS F 4042-2012 (Polymer cement mortar for repairing concrete structures).
[표 1]의 실시 예에 따른 본 발명의 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물과 한일시멘트사의 그라우트용 시멘트 모르타르(레미탈)를 KS F 4042-2012(콘크리트 구조물 보수용 폴리머 시멘트 모르타르) 규정에 의해 시험하여 물성을 비교한 결과는 아래의 표 2와 같다.The high-strength elastic seismic mortar composition using the eco-friendly cement of the present invention according to the embodiment of [Table 1] and the cement mortar (remittal) for grout of Hanil Cement Co., Ltd. are in accordance with KS F 4042-2012 (Polymer cement mortar for repairing concrete structures). Table 2 below shows the results of comparing the physical properties.
실험 결과 본 발명의 조성물은 기존의 시판품에 비해 상당히 우수한 성능이 나타남을 확인하였으며, 특히 본 발명품에서 탄성 개질 천연 라텍스의 첨가량에 따라 압축강도, 휨강도 및 부착강도의 차이가 있음을 확인하였다.As a result of the experiment, it was confirmed that the composition of the present invention showed significantly superior performance compared to the existing commercial products. In particular, it was confirmed that there is a difference in compressive strength, flexural strength and adhesion strength depending on the amount of elastically modified natural latex added in the present invention.
Claims (4)
(2) 3호 규사(1.5~2.5mm)와 4호 규사(1.20~1.50mm)와 5호 규사(0.7~1.2mm)를 합한 규사 총량이 20 내지 40 중량%;
(3) 12CaO·7Al2O3 함량이 70 중량% 이상인 칼슘 알루미네이트 화합물 5 내지 9 중량%;
(4) free-CaO 함량이 3내지 30 중량%인 유동층상 보일러 석탄회(fly ash) 4.9 내지 10 중량%; 및
(5) 알루미늄 금속 분말 0.1 내지 1.0 중량%;를 포함하며,
(6) 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 5 내지 20 중량부의 섬유가 혼합되며,
(7) 상기 (1)~(5) 조성물 합계 100 중량부에 대하여 0.1 내지 5중량부의 첨가제가 더 첨가되는 분체 조성물(A)와,
(1) 친수성 폴리머 수지인 폴리비닐 알코올 10% 수용액 50 내지 70중량%;
(2) 폴리 카르복실산으로 개질하여 암모니아 냄새를 제거한 탄성 개질 천연 고무 라텍스 조성물 29-50 중량%; 및
(3) 소디움 라우릭 산계 계면활성제 1 내지 5 중량%; 를 포함하는 액체상 용액(B)으로 구성되며,
상기 (A) 분말 100 중량부에 대하여 (B) 용액이 15 내지 50 중량부로 혼합되는 것을 특징으로 하는 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물.(1) 40 to 70% by weight of ordinary ordinary Portland cement or eco-friendly cement;
(2) 20 to 40 wt% of the total amount of silica sand of No. 3 (1.5-2.5 mm), No. 4 (1.20-1.50 mm) and No. 5 (0.7-1.2 mm);
(3) 5 to 9% by weight of a calcium aluminate compound having a 12CaO·7Al2O3 content of 70% by weight or more;
(4) 4.9 to 10% by weight of fluidized bed boiler fly ash having a free-CaO content of 3 to 30% by weight; and
(5) 0.1 to 1.0% by weight of aluminum metal powder;
(6) 5 to 20 parts by weight of fibers are mixed with respect to 100 parts by weight of the total composition of (1) to (5),
(7) the powder composition (A) in which 0.1 to 5 parts by weight of an additive is further added with respect to 100 parts by weight of the total composition (1) to (5);
(1) 50 to 70% by weight of a 10% aqueous solution of polyvinyl alcohol, which is a hydrophilic polymer resin;
(2) 29-50 wt% of an elastically modified natural rubber latex composition modified with polycarboxylic acid to remove ammonia odor; and
(3) 1 to 5% by weight of sodium lauric acid-based surfactant; Consists of a liquid solution (B) containing
High-strength elastic earthquake-resistant mortar composition using eco-friendly cement, characterized in that 15 to 50 parts by weight of the (B) solution is mixed with respect to 100 parts by weight of the (A) powder.
친환경 시멘트는 고로슬래그와 미분탄 석탄회 및 페트로 코크스를 원료로 사용하는 유동층상 보일러 탈황석고계 반응 활성화제로 구성된 이산화탄소 저감형 시멘트인 것을 특징으로 하는 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물.According to claim 1,
Eco-friendly cement is a high-strength elastic seismic-resistant mortar composition using eco-friendly cement, characterized in that it is a carbon dioxide reduction cement composed of a desulfurized gypsum-based reaction activator in a fluidized bed boiler using blast furnace slag, pulverized coal ash and petrocoke as raw materials.
상기 탄성 개질 천연고무 라텍스는 천연고무 라텍스로서 고형분 함량이 60 중량% 이상인 천연고무 라텍스를 사용하는 것을 특징으로 하는 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물.According to claim 1,
The elastically modified natural rubber latex is a high-strength elastic earthquake-resistant mortar composition using an eco-friendly cement, characterized in that natural rubber latex having a solid content of 60% by weight or more is used.
콘크리트 구조물 방수용 모르타르, 열화 콘크리트 보수 보강용 모르타르, 콘크리트 표면 마감용 모르타르 및 지반보강용 그라우트 모르타르로 사용할 수 있는 것을 특징으로 하는 친환경 시멘트를 이용한 고강도 탄성 내진 모르타르 조성물.According to claim 1,
A high-strength elastic seismic-resistant mortar composition using eco-friendly cement, characterized in that it can be used as a waterproofing mortar for concrete structures, a mortar for repairing and reinforcing deteriorated concrete, a mortar for finishing the concrete surface, and a grout mortar for ground reinforcement.
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