KR101368992B1 - Powdered water proofing agent for concrete - Google Patents
Powdered water proofing agent for concrete Download PDFInfo
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- KR101368992B1 KR101368992B1 KR1020130134053A KR20130134053A KR101368992B1 KR 101368992 B1 KR101368992 B1 KR 101368992B1 KR 1020130134053 A KR1020130134053 A KR 1020130134053A KR 20130134053 A KR20130134053 A KR 20130134053A KR 101368992 B1 KR101368992 B1 KR 101368992B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B20/02—Treatment
- C04B20/04—Heat treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0675—Mortars activated by rain, percolating or sucked-up water; Self-healing mortars or concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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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Abstract
Description
본 발명은 콘크리트 혼입용 분말형구체방수제에 관한 것으로, 보다 상세하게는 토목 및 건축물의 바닥, 옥상, 벽체, 통로, 등에 타설되는 콘크리트에 혼입하여 수밀한 콘크리트를 만들어 주며 콘크리트 균열의 발생 시 활성결정체 성장을 통해 균열부를 폐쇄하여 누수를 자가치유 할 수 있는 콘크리트 혼입용 분말형구체방수제에 관한 것이다.
The present invention relates to a powder-type spherical waterproofing agent for concrete mixing, and more specifically, to make concrete concrete by mixing with concrete poured on the ground, roof, walls, passages, etc. of civil engineering and buildings, and active crystals when concrete cracks occur. The present invention relates to a powder-type spherical waterproofing agent for mixing concrete that can self-heal a leak by closing a crack through growth.
현재 건축 구조물에 가장 많이 사용되는 콘크리트는 수화 경화체이므로 잔여수분의 증발에 의한 공극 발생은 필연적 현상이며 이를 통한 외부 유해물질의 침투는 재료의 성능 및 내구성 저하의 결과를 초래하며 또한 취성재료로서 압축력에는 강하지만 인장에는 약한 성질을 보인다. 균열은 콘크리트의 고유 특성이기 때문에 보강된 콘크리트의 구조에서 균열은 파괴로 까지 여기지 않지만 균열의 너비는 설계된 너비한계를 넘지 말아야 한다. 이러한 균열 외에도 수축변형에 의해 미세균열은 일반적으로 콘크리트에 발생하며 막을 수도 없다. 미세균열이 모여 연속 네트워크를 형성하면 콘크리트의 방수성에 큰 영향을 미치며 특히, 콘크리트의 균열을 통하여 물이 침투하면 철근부식 및 중성화가 촉진되어 건축물의 수명에도 커다란 영향을 미친다. Since the most used concrete for building structures is hydration hardening, voids generated by evaporation of residual moisture are inevitable, and penetration of external harmful substances through this leads to a decrease in performance and durability of the material. Strong but weak in tension. Because cracks are inherent to concrete, cracks are not considered to be fractures in reinforced concrete structures, but the width of cracks must not exceed the designed width limit. In addition to these cracks, microcracks generally occur in concrete due to shrinkage deformation and cannot be prevented. The formation of a continuous network of fine cracks has a great effect on the waterproofing of concrete. Especially, if water penetrates through the crack of concrete, reinforcing corrosion and neutralization are promoted, which greatly affects the life of the building.
현재 국내 건축물들은 충분한 외부공간이 확보되지 않아 건축물의 외부에서 방수를 하기 어려워 내부에서 방수공사를 시행하고 있으며 이는 콘크리트가 항상 물과 접해 있어 내부에서 누수는 보이지 않지만 철근의 부식을 초래하여 건축물의 내구성에 영향을 미치며 내부에서 시공하는 방수는 그 특성 상 단면두께 전체를 방수화 할 수 없으며 콘크리트에 균열이 발생되면 방수층에 내균열저항성능이 부여되지 않아 방수층 또한 같이 파단되고 물이 침투하여 철근의 부식 및 팽창을 초래하여 콘크리트가 박리되고 균열이 확대되어 건축물의 내구성에 영향을 미치며 주기적으로 보수해야 함으로 경제적인 손실을 가져온다.
Currently, domestic buildings are not waterproof enough to secure the exterior of the building because they do not have enough external space.In this case, concrete is always in contact with water. Due to its characteristics, the waterproofing inside can't waterproof the entire cross-sectional thickness, and if cracks occur in concrete, the cracking resistance is not given to the waterproofing layer. It causes expansion, causing concrete to delaminate and cracks to expand, affecting the durability of the building and requiring periodic repairs, resulting in economic losses.
본 발명은 상기의 종래 기술의 문제를 해결하기 위한 것으로, 현장 타설용 레디믹스트 콘크리트(ready mixed concrete)를 제조할 시 공장에서 투입하여 콘크리트 타설 후 수밀한 콘크리트를 만들어 주고 균열 시 발생하는 균열부를 통한 누수발생에 대응하기 위한 것으로, 콘크리트에 균열이 발생 시 침투하는 물과 반응 시 생성되는 복합촉매가 변형된 규산칼슘수화물 결정체를 계속적으로 형성하도록 함으로써, 콘크리트에 균열의 발생 시 영구적으로 자가치유가 가능하고 수밀한 콘크리트를 만들어 주며 또한 강도가 증진되어 콘크리트의 내구성을 확보할 수 있는 콘크리트 혼입용 분말형구체방수제를 제공하고자 함에 발명의 목적이 있다.The present invention is to solve the above problems of the prior art, when manufacturing a ready mixed concrete (in-place pouring) at the factory to make watertight concrete after pouring concrete and through cracks generated during cracking It is to cope with leaks, and the complex catalyst produced when reacting with water that penetrates the concrete continuously forms the modified calcium silicate hydrate crystals, so that self-healing is possible permanently when the crack occurs in the concrete. It is an object of the present invention to provide a powder-type spherical waterproofing agent for mixing concrete that can make concrete and dense concrete and also ensure the durability of concrete.
또한, 별도의 방수층이나 보호층이 필요없어 건축물의 방수 보수에 드는 경제적 손실을 예방할 수 있는 콘크리트 혼입용 분말형구체방수제를 제공하고자 함에 발명의 목적이 있다.
In addition, it is an object of the present invention to provide a powder-type spherical waterproofing agent for concrete mixing that can prevent the economic loss of the waterproofing repair of the building do not need a separate waterproof layer or protective layer.
상기 목적을 달성하기 위한 본 발명의 콘크리트 혼입용 분말형구체방수제는 시멘트, 규사, 고온 처리된 석영, 유동화제 및 지연제가 혼합된다.In order to achieve the above object, the powder-containing spherical waterproofing agent of the present invention is mixed with cement, silica sand, hot-treated quartz, a fluidizing agent, and a retardant.
또한, 상기 규사는 직경 200 mesh 이하일 수 있다.In addition, the silica sand may be 200 mesh or less in diameter.
또한, 상기 유동화제는 폴리카본산계분말유동화제 일 수 있다.In addition, the fluidizing agent may be a polycarboxylic acid powder fluidizing agent.
또한, 상기 지연제는 타르타르산 일 수 있다.In addition, the retardant may be tartaric acid.
또한, 시멘트 35 ~ 64 중량%, 규사 30 ~ 59 중량%, 고온 처리된 석영 5 ~12 중량%, 유동화제 0.01 ~ 1 중량% 및 지연제 0.01 ~ 1 중량%를 사용할 수 있다.In addition, 35 to 64% by weight of cement, 30 to 59% by weight of silica sand, 5 to 12% by weight of high temperature quartz, 0.01 to 1% by weight of a fluidizing agent and 0.01 to 1% by weight of a retardant may be used.
또한, 상기 고온 처리된 석영은, 결정질 석영과 은미정질 석영을 배합한 후 고온에서 가열하여 얻어질 수 있다.In addition, the high temperature treated quartz can be obtained by combining crystalline quartz and silver microcrystalline quartz and heating at high temperature.
또한, 결정질 석영과 은미정질 석영을 2 : 3의 비율로 배합할 수 있다.In addition, crystalline quartz and silver microcrystalline quartz can be mix | blended in the ratio of 2: 3.
또한, 결정질 석영과 은미정질 석영을 배합한 후 800 ~ 1470 ℃에서 소성하여 사용할 수 있다.In addition, crystalline quartz and silver microcrystalline quartz may be blended and then fired at 800 to 1470 ° C.
또한, 800 ~ 1470 ℃에서 소성 후, 변태한 석영 결정체를 직경 0.2mm 이하의 알갱이로 만들어서 사용할 수 있다.Moreover, after baking at 800-1470 degreeC, the transformed quartz crystal can be made into the granules of diameter 0.2mm or less, and can be used.
또한, 상기 결정체가 균열 발생 시 침투한 물과 시멘트의 입자들과 반응하여 복합촉매를 생산하고, 상기 복합촉매가 변형된 규산칼슘 수화물(
In addition, the crystals react with the particles of water and cement that have penetrated when a crack occurs to produce a composite catalyst, and the composite catalyst is modified calcium silicate hydrate (
본 발명에 따른 콘크리트 혼입용 분말형구체방수제에 의하면, 콘크리트 제조 시 배치플랜트(batch plant)에 투입함으로써, 콘크리트 단면 전체를 수밀화시켜 사후 별도의 방수 작업이 필요 없고 콘크리트에 필연적으로 발생하는 균열부를 통한 누수를 자가치유하여 철근의 부식과 콘크리트의 박리를 막고 건축물의 내구성을 유지할 수 있는 효과가 있다.According to the powder-type spherical waterproofing agent for concrete mixing according to the present invention, by putting into a batch plant during the production of concrete, the entire concrete cross section is water-tight, so that no additional waterproofing work is required afterwards, and cracks inevitably occur in concrete. Self-healing of leaks prevents corrosion of reinforcing bars and peeling of concrete and maintains the durability of buildings.
또한, 콘크리트에 균열이 발생 시 침투하는 물과 시멘트의 입자들과 반응하여 변형된 규산칼슘수화물 결정체를 형성하여 균열을 채우는 것 외에, 물과 반응 시 생성되는 복합촉매가 변형된 규산칼슘수화물 결정체를 계속적으로 형성하도록 촉진함으로써, 콘크리트에 균열의 발생 시 영구적으로 자가치유가 가능하며, 콘크리트의 강도가 증가되는 효과가 있다.
In addition to forming cracked calcium silicate hydrate crystals by reacting with water and cement particles that penetrate when concrete cracks, in addition to filling cracks, complex catalysts produced when reacting with water are modified calcium silicate hydrate crystals. By promoting the formation continuously, it is possible to permanently self-healing in the event of cracks in the concrete, there is an effect of increasing the strength of the concrete.
도 1은 콘크리트에 형성된 틈새에서 물과 반응하여 형성된 자가치유 물질의 모습을 보여주는 사진이다.
도 2는 도1의 자가치유 물질의 확대 사진이다.
도 3은 일반 콘크리트와 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트의 단면조직을 비교한 SEM(주사전자현미경) 사진 이다.
도 4는 일반콘크리트(OPC)의 실물대와 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트 실물대 제작 후 누수 자가치유 성능을 비교 실험한 사진이다.
도 5는 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트의 품질시험성적서이다.
도 6은 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트와 일반콘크리트(OPC)의 강도 비교 실험 결과를 나타내는 그래프 이다.
도 7은 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트와 일반콘크리트(OPC)의 감수 효과에 대한 실험 결과를 나타내는 그래프이다.1 is a photograph showing a state of self-healing material formed by reacting with water in a gap formed in concrete.
FIG. 2 is an enlarged photograph of the self-healing material of FIG. 1.
Figure 3 is a SEM (scanning electron microscope) picture comparing the cross-sectional structure of the concrete and the concrete is applied to the concrete spherical waterproofing agent for concrete mixing according to the present invention.
Figure 4 is a photograph comparing the leakage of self-healing performance after the production of the actual size of the concrete (OPC) and the concrete composite applied to the concrete spherical waterproofing agent for concrete mixing according to the present invention.
5 is a quality test report of the concrete to which the powder-type spherical waterproofing agent for concrete mixing according to the present invention is applied.
Figure 6 is a graph showing the results of the comparison of the strength of the concrete and the general concrete (OPC) to which the powder-form spherical waterproofing agent for concrete mixing according to the present invention.
Figure 7 is a graph showing the experimental results of the water-resistant effect of the concrete and the general concrete (OPC) to which the powder-type concrete waterproofing agent for concrete mixing according to the present invention is applied.
이하에서는, 첨부도면을 참고하여 본 발명에 따른 일 실시 예를 보다 상세하게 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 레디믹스트 콘크리트 제조 시 배치플랜트(batch plant)에서 시멘트 100 중량부에 대해서 콘크리트 혼입용 분말형구체방수제 1~2 중량부를 투입하여 콘크리트에 있는 물과 시멘트 입자 등과 반응하여 복합적인 결정체 성장과정을 유발하여 콘크리트 단면 전체를 수밀화 시키고 콘크리트를 타설 후 균열이 발생하면 침투하는 물과 시멘트의 입자들과 반응하여 변형된 규산칼슘수화물 결정체가 형성되고, 촉매가 변형된 규산칼슘수화물 결정체를 계속적으로 형성하도록 촉진함으로써, 누수를 차단하고 영구적으로 자가치유가 가능한 콘크리트 혼입용 구체방수제에 관한 것이다. The present invention is a complex crystal growth process by reacting the water and cement particles in the concrete by adding 1 to 2 parts by weight of the powder spherical waterproofing agent for concrete mixing in the batch plant (batch plant) in the production of ready mixed concrete When the concrete cross section is water-tightened and cracks occur after casting concrete, the modified calcium silicate hydrate crystals are formed by reacting with the penetrating water and cement particles, and the catalyst calcium silicate hydrate crystal is continuously By promoting the formation, it relates to a concrete waterproofing agent for incorporating concrete that can block leakage and permanently self-healing.
본 발명에 따르면 콘크리트 혼입용 분말형구체방수제는 시멘트, 규사, 고온 처리된 석영, 유동화제 및 지연제가 혼합된다.According to the present invention, the powdered spherical waterproofing agent for concrete mixing is cement, silica sand, hot-treated quartz, a fluidizing agent and a retardant.
시멘트는 1종 보통 포틀랜드 시멘트이며, 그 화학 조성과 물리적 성능은 포틀랜드 시멘트의 기준에 맞는 것을 사용한다.Cement is a type 1 ordinary portland cement whose chemical composition and physical performance meet the requirements of portland cement.
규사(실리카샌드)는 세립자가 많으면 콘크리트의 유동성이 증가하나 크기에 따라 유동성, 펌핑성, 공기연행성에 영향을 미치므로 인위적으로 부순 고른 입도를 가져 품질을 향상시킬 수 있는 직경 약 200 mesh 이하의 규사를 사용하는 것이 바람직하다.Silica sand (silica sand) increases the fluidity of concrete if there are many fine grains, but it affects the fluidity, pumping property, and air continuity depending on the size. Preference is given to using.
구체적으로는, 시멘트 35 ~ 64 중량%, 규사 30 ~ 59 중량%, 고온 처리된 석영 5 ~12 중량%, 유동화제 0.01 ~ 1 중량% 및 지연제 0.01 ~ 1 중량%를 혼합 사용하는 것이 바람직하다.Specifically, it is preferable to use a mixture of 35 to 64% by weight of cement, 30 to 59% by weight of silica sand, 5 to 12% by weight of high temperature treated quartz, 0.01 to 1% by weight of a fluidizing agent and 0.01 to 1% by weight of a retardant. .
유동화제는 폴리카본산계분말유동화제를 사용하고, 지연제는 타르타르산을 사용한다.The fluidizing agent uses a polycarboxylic acid powder fluidizing agent, and the retardant uses tartaric acid.
폴리카본산계분말유동화제는 시멘트, 석고, 세라믹 및 광물질계 등의 제품에서 뛰어난 분산력을 발휘하는 분말유동화제이지만 1% 이상 투입될 시에는 슬럼프(slump) 손실을 가져올 수 있으므로 투입량은 1% 중량 이상 투입하여서는 안된다. Polycarboxylic acid powder fluidizing agent is a powder fluidizing agent that shows excellent dispersing power in products such as cement, gypsum, ceramics and minerals, but when it is added more than 1%, slump loss can be caused. It should not be put in.
타르타르산은 작업성을 위한 지연제로 사용하지만, 1% 이상 투입시에는 슬럼프 손실을 가져올 수 있으므로 1% 중량 이상 투입하지 않도록 한다.Tartaric acid is used as a retardant for workability, but if it is added more than 1%, slump loss may occur, so do not add more than 1% by weight.
고온 처리된 석영은 결정질 석영과 은미정질 석영을 배합한 후 고온에서 가열하여 얻을 수 있다.The high temperature treated quartz can be obtained by blending crystalline quartz and silver microcrystalline quartz and heating at high temperature.
한편, 결정질 석영과 은미정질 석영을 2 : 3의 비율로 배합한다. 또한, 결정질 석영과 은미정질 석영을 배합한 후 800 ~ 1470 ℃에서 소성하여 사용한다. 결정질 석영과 은미정질 석영을 배합하여 고온에서 가열하면 850 ℃에서 트리디마이트(tridymite)로 변태하고 다시 1450 ℃에서 크리스토발라이트(cristobalite)로 변태한다. On the other hand, crystalline quartz and silver microcrystalline quartz are blended in a ratio of 2: 3. In addition, crystalline quartz and silver microcrystalline quartz are mixed and then fired at 800 to 1470 ° C. When crystalline quartz and silver microcrystalline quartz are mixed and heated at a high temperature, they are transformed into tridymite at 850 ° C. and then cristobalite at 1450 ° C.
구체적으로는, 800 ~ 1470 ℃에서 소성 후, 크리스토발라이트로 변태한 석영 결정체를 직경 0.2mm로 무수히 천공되어 있는 로드밀에 통과시켜 지름 지름 0.2mm의 알갱이로 만들어서 혼합 사용한다.Specifically, after calcining at 800 to 1470 ° C., the quartz crystals transformed into cristobalite are passed through a rod mill that is perforated with a diameter of 0.2 mm to form granules having a diameter of 0.2 mm and mixed.
크리스토발라이트로 변태한 석영 결정체가 함유된 방수제가 콘크리트에 균열 발생 시 침투한 물과 시멘트의 입자들과 반응하여 Ca와 결합된 촉매제(복합촉매)를 생성하고, Ca와 결합된 촉매제가 규산칼슘 수화물의 생성을 촉진시킴으로써, 크리스탈 형태의 변형된 규산칼슘수화물 결정체가 균열을 채우는 것이다.A waterproofing agent containing quartz crystals transformed into cristobalite reacts with particles of water and cement that have penetrated when concrete cracks to form a catalyst (complex catalyst) combined with Ca, and the catalyst combined with Ca is a calcium silicate hydrate. By promoting production, the modified calcium silicate hydrate crystals in crystal form fill the cracks.
촉매가 물과 시멘트의 입자들과 반응하여 변형된 규산칼슘수화물 결정체를 생성하는 반응을 콘크리트가 수화된 후에도 계속하여 영구적으로 진행함으로써, 콘크리트의 균열을 자가치유 할 수 있고 강도가 증진되어 콘크리트의 내구성을 확보할 수 있다.The catalyst reacts with the particles of water and cement to produce modified calcium silicate hydrate crystals continuously and permanently after the concrete has been hydrated, thereby self-healing the cracks of concrete and increasing the strength Can be secured.
도 1 및 2를 참조하면, 콘크리트에 형성된 틈새에서 물과 시멘트의 입자들과 반응하여 형성된 자가치유 물질(변형된 규산칼슘수화물 결정체)이 바늘 모양의 크리스탈 형태로 성장하여 콘크리트의 균열을 채우게 된다.Referring to FIGS. 1 and 2, self-healing materials (modified calcium silicate hydrate crystals) formed by reacting with particles of water and cement in a gap formed in concrete grow into needle-shaped crystals to fill cracks in concrete.
도 3을 참조하면, 일반 콘크리트의 경우와 대비하여, 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트에서는 변형된 규산칼슘수화물 결정체가 무수히 생성되어 콘크리트 공극을 일반 콘크리트보다 밀실하게 채운 것을 볼 수 있다.Referring to FIG. 3, in contrast to the case of general concrete, in the concrete to which the powder-shaped spherical waterproofing agent for concrete mixing according to the present invention is applied, a myriad of modified calcium silicate hydrate crystals are generated, filling concrete pores more tightly than general concrete. Can be.
도 4를 참조하면, 일반 콘크리트와 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트의 실물대 제작 후 자가치유가 효과가 있는지 시험한 결과 일반 콘크리트는 시간이 경과되어도 3일이나 14일 27일 모두 누수되는 양이 비슷하나, 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 콘크리트에서는 시간이 경과됨에 따라 자가치유물질에 의해 공극이 채워져 누수량이 줄어드는 것을 볼 수 있다.Referring to Figure 4, the result of testing the self-healing effect after the production of the actual size of the concrete and the concrete-based concrete waterproofing agent for concrete mixing according to the present invention, the general concrete is 3 days 14 days 27 days Although the amount of all leaks is similar, it can be seen that in the concrete to which the powder-type spherical waterproofing agent for concrete mixing according to the present invention is applied, the amount of leakage is reduced by filling pores by self-healing materials over time.
변형된 규산칼슘수화물 결정체의 성장과정에 대해서는 이하에서 자세히 살펴본다.The growth process of the modified calcium silicate hydrate crystals will be described in detail below.
본 발명에 따른 콘크리트 혼입용 분말형구체방수제는 소수성 물질과 달리 친수성이며, 콘크리트 혼입용 분말형구체방수제를 투입 시 콘크리트에 있는 물과 시멘트 입자와 반응하는 복합적인 결정체 성장과정을 유발하며, 이 반응은 시멘트 수화과정에서 여러 가지 금속산화물과 소금, 칼륨을 포함한 미수화되거나 부분적으로 수화된 시멘트 입자들과도 반응을 한다.Unlike the hydrophobic material, the powder-form spherical waterproofing agent for concrete mixing according to the present invention is hydrophilic and causes a complex crystal growth process that reacts with water and cement particles in concrete when the powder-type spherical waterproofing agent for concrete mixing is added. Silver also reacts with various metal oxides and with unhydrated or partially hydrated cement particles, including salt and potassium.
이 촉매 반응은 습기가 콘크리트에 존재할 때 반응을 유지한다. 즉, 물이나 습기와 접촉하게 되면 반응을 영구적으로 수행한다.This catalytic reaction maintains the reaction when moisture is present in the concrete. That is, the contact is permanently carried out in contact with water or moisture.
본 발명에 따른 콘크리트 혼입용 분말형구체방수제는 콘크리트 내에서 복합적인 결정체 성장과정을 유발하는데, 그 과정은 다음 3단계의 반응에 기반한다.
Powdered spherical waterproofing agent for concrete mixing according to the present invention causes a complex crystal growth process in concrete, the process is based on the reaction of the next three steps.
[1단계 반응][Stage 1 reaction]
1단계 반응에서 생성된 CaCo₃결정체가 형성되며 물의 침투를 차단하는데 이는 모세관 차단이며 또한 반응에서 생성된 수용성규산염에 의해 2단계 반응이 일어난다.
CaCo3 crystals formed in the one-step reaction are formed and block the penetration of water, which is a capillary block, and the two-step reaction is caused by the water-soluble silicate produced in the reaction.
[2단계 반응][2-step reaction]
수용성 규산염(이산화 규소) + Ca(OH)₂-> C-S-H 결정체<변형된 규산칼슘수화물결정체>Water-soluble silicate (silicon dioxide) + Ca (OH) ₂-> C-S-H crystals <Modified calcium silicate hydrate crystals>
수용성 규산염이 콘크리트 내에 존재하는 Ca(OH)₂와 반응하여 변형된 C-S-H 결정체(
CSH crystals modified by water-soluble silicates reacted with Ca (OH) ₂ present in concrete
[3단계 반응] [3-step reaction]
Ca와 결합된 촉매제 + 물 -> 크리스탈 생성반응(변형된 규산칼슘수화물 결정체 생성반응) -> 촉매제의 환원 -> Ca와 결합된 촉매제
Catalyst combined with Ca + water-> crystal formation reaction (modified calcium silicate hydrate crystal formation reaction)-> reduction of catalyst-> catalyst combined with Ca
결정질 석영과 은미정질 석영을 고온에서 소성하여 변태시킨 결정체가 함유된 방수제가 물과 만나면 
즉, Ca와 결합된 촉매제는 물속이나 물과 만나면 
Ca와 결합된 촉매제는 콘크리트가 수화된 후에도 새로이 발생하는 균열들에 의한 습기나 물이 있으면 다시 활성화되어 변형된 C-S-H 결정체를 만드는데 이러한 촉매제의 역할은 순환 싸이클로 되며 영구적이다.The catalyst combined with Ca is reactivated in the presence of moisture or water caused by new cracks even after the concrete is hydrated to form deformed C-S-H crystals. The catalyst is a cyclic cycle and is permanent.
본 발명에 따른 콘크리트 혼입용 분말형구체방수제는 전술한 콘크리트 배합 시에 성능 개선을 위하여 투입되는 각종 혼화재와 혼화제와의 충돌로 인하여 발생될 수 있는 슬럼프 손실, 헛응결, 강도 저하, 방수성에 문제가 있는지를 알아보기 위해 시험을 하였다.Powder-type spherical waterproofing agent for concrete mixing according to the present invention has problems in slump loss, coagulation, strength drop, and waterproofness which may occur due to the collision of various admixtures and admixtures that are introduced to improve performance when the above-mentioned concrete is mixed. A test was made to see if there was any.
도 5 의 품질시험성적서를 참조하여 보면 슬럼프 손실이나 헛응결의 문제는 없고, 도 5 의 품질시험성적서를 참조하여 도 6과 같이 비교하면, 본 발명에 따른 콘크리트 혼입용 분말형구체방수제가 적용된 시멘트와 보통의 포틀랜드 시멘트(OPC)의 강도 비교 결과, 초기에는 OPC의 강도와 비슷하나, 시간이 지남에 따라 콘크리트 혼입용 분말형구체방수제가 혼입된 콘크리트의 강도가 더 우수해지는 것을 볼 수 있다.There is no problem of loss of slump or condensation when referring to the quality test report of FIG. 5. Compared with FIG. 6 with reference to the quality test report of FIG. 5, the cement to which the powder-type spherical waterproofing agent for concrete mixing is applied according to the present invention. In comparison with the strengths of OPC and ordinary Portland cement (OPC), the initial strength of the OPC is similar to that of the concrete, but over time, the strength of the concrete incorporating the concrete spherical waterproofing agent for concrete mixing is improved.
도 5의 시험성적서를 참조하여 도 7과 같이 비교하면, 물흡수계수비는 기준치 보다 24.3% 적고 투수비는 기준치 보다 18.6% 적어져서 방수성능이 향상된 것을 알 수 있다. As shown in FIG. 7 with reference to the test report of FIG. 5, the water absorption coefficient ratio is 24.3% less than the reference value and the water permeability ratio is 18.6% less than the reference value.
본 발명에 의하면, 콘크리트 제조 시 배치플랜트(batch plant)에 투입함으로써, 사후 별도의 방수 작업이 필요없고 콘크리트 구조 자체를 수밀화하고 콘크리트에 필연적으로 발생하는 균열을 자가치유하여 철근의 부식을 막고 건축물의 내구성을 유지할 수 있는 효과가 있다. According to the present invention, by putting into a batch plant during the production of concrete, no separate waterproof work is necessary after the water, and the concrete structure itself is water-tightened and self-healing cracks inevitably occur in the concrete to prevent corrosion of the reinforcing bars and buildings There is an effect that can maintain the durability.
또한, 콘크리트에 균열이 발생 시 침투하는 물과 시멘트의 입자들과 반응하여 변형된 규산칼슘수화물 결정체를 형성하여 균열을 채우고, 생성된 복합촉매가 변형된 규산칼슘수화물 결정체를 계속적으로 형성하도록 촉진함으로써, 콘크리트에 균열의 발생 시 영구적으로 자가치유가 가능하며, 콘크리트의 강도가 증가되는 효과가 있다.In addition, by forming cracked calcium silicate hydrate crystals by reacting with the particles of water and cement that penetrate when the crack occurs in concrete, filling the cracks, and by promoting the resulting composite catalyst to continuously form the modified calcium silicate hydrate crystals In the event of cracks in concrete, self-healing is possible permanently and the strength of concrete is increased.
본 발명은 상기한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 되는 것임은 자명하다.It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Obviously, such modifications are intended to be within the scope of the claims.
Claims (10)
상기 고온 처리된 석영은,
결정질 석영과 은미정질 석영을 배합한 후 고온에서 가열하여 얻어진 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.Cement, silica sand, hot-treated quartz, glidants and retarders are mixed,
The high temperature treated quartz,
Powder-type spherical waterproofing agent for concrete mixing, characterized in that obtained by mixing crystalline quartz and silver microcrystalline quartz and heating at high temperature.
상기 규사는 직경 200 mesh 이하인 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
The silica sand powder-type spherical waterproofing agent, characterized in that the diameter less than 200 mesh.
상기 유동화제는 폴리카본산계분말유동화제 인 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
The fluidizing agent is a powder type spherical waterproofing agent for concrete mixing, characterized in that the polycarboxylic acid-based powder fluidizing agent.
상기 지연제는 타르타르산 인 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
The retardant is a powder-type spherical waterproofing agent for concrete mixing, characterized in that the tartaric acid.
시멘트 35 ~ 64 중량%, 규사 30 ~ 59 중량%, 고온 처리된 석영 5 ~12 중량%, 유동화제 0.01 ~ 1 중량% 및 지연제 0.01 ~ 1 중량%를 사용하는 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
35 to 64% by weight of cement, 30 to 59% by weight of silica sand, 5 to 12% by weight of hot-treated quartz, 0.01 to 1% by weight of a fluidizing agent and 0.01 to 1% by weight of retardant Spherical waterproofing agent.
결정질 석영과 은미정질 석영을 2 : 3의 비율로 배합하는 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
Powder-type spherical waterproofing agent for mixing concrete, characterized in that the crystalline quartz and silver microcrystalline quartz in a ratio of 2: 3.
결정질 석영과 은미정질 석영을 배합한 후 800 ~ 1470 ℃에서 소성하여 사용하는 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.The method of claim 1,
Powder-type spherical waterproofing agent for concrete mixing, characterized in that the crystalline quartz and silver microcrystalline quartz are mixed and then fired at 800 to 1470 ° C.
800 ~ 1470 ℃에서 소성 후, 변태한 석영 결정체를 직경 0.2mm 이하의 알갱이로 만들어서 사용하는 것을 특징으로 하는 콘크리트 혼입용 분말형구체방수제.9. The method of claim 8,
Powdered spherical waterproofing agent for concrete mixing, characterized in that after calcining at 800 ~ 1470 ℃, transformed quartz crystals are made into granules with a diameter of 0.2mm or less.
상기 결정체가 균열 발생 시 침투한 물과 시멘트의 입자들과 반응하여 복합촉매를 생산하고, 상기 복합촉매가 변형된 규산칼슘 수화물(
The crystals react with the particles of water and cement that have penetrated when a crack occurs to produce a composite catalyst, and the composite catalyst is modified calcium silicate hydrate (
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| KR101683021B1 (en) | 2016-05-17 | 2016-12-07 | (주)칠만페네트론 | Crystalline growth type concrete powdered water proofing agent with an improved self-healing function and method thereof |
| KR102435099B1 (en) | 2021-06-02 | 2022-08-23 | 한국유지보수(주) | Input dispersing system using powder-type self waterproofing material |
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