KR100757033B1 - Method for repairing and restoring surface defect of concrete structure - Google Patents
Method for repairing and restoring surface defect of concrete structure Download PDFInfo
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- KR100757033B1 KR100757033B1 KR1020040088106A KR20040088106A KR100757033B1 KR 100757033 B1 KR100757033 B1 KR 100757033B1 KR 1020040088106 A KR1020040088106 A KR 1020040088106A KR 20040088106 A KR20040088106 A KR 20040088106A KR 100757033 B1 KR100757033 B1 KR 100757033B1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0296—Repairing or restoring facades
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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Abstract
본 발명은 콘크리트가 양생되어 거푸집을 탈형한 직후 발생되는 면하자(골재분리, 기포, 박리·박락, 표면오염, 파손 등)와 콘크리트 타설후 장시간이 경과하여 발생되는 열화, 환경적 요인에 의한 표면 박리·박락, 오염, 중성화된 표면을 콘크리트 원래의 성질로 보수 또는 복원할 수 있는 콘크리트 구조물의 면하자 보수 복원방법을 제공하는데 그 목적이 있다.The present invention is the surface caused by deterioration (environmental separation, bubbles, peeling / peeling, surface contamination, breakage, etc.) and deterioration that occurs after a long time after the concrete is poured, after the concrete is cured and demoulding formwork The purpose of the present invention is to provide a method for repairing defects in concrete structures that can repair or restore peeling, peeling, contamination, and neutralized surfaces to the original properties of concrete.
이를 위해 본 발명에 따른 콘크리트 구조물의 면하자 보수 복원방법은, 하자면을 정리하는 정리단계(S1)와, 정리된 면에 1차 특수시멘트몰탈을 미장하는 미장단계(S2)와, 미장된 1차 특수시멘트몰탈 양생후 표면을 평면화하는 평면화단계(S3)와, 평면화된 면에 원면과 색상 및 질감 일체화를 위해 액상으로 된 2차 특수시멘트몰탈을 분사하여 접착시키는 뿜칠단계(S4)와, 뿜칠된 2차 특수시멘트몰탈의 양생후 콘크리트 고유의 문양을 착색하는 문양 착색단계(S5)를 포함하여 이루어진 것을 특징으로 한다.To this end, the defect repair restoration method of the concrete structure according to the present invention, the cleaning step (S1) to clean up the defect surface, the plastering step (S2) for plastering the first special cement mortar on the cleaned surface, and the first The flattening step (S3) to planarize the surface after curing the special cement mortar, and the spraying step (S4) of spraying and adhering the secondary special cement mortar in the liquid phase to integrate the color and texture on the flattened surface, and After curing the second special cement mortar is characterized in that it comprises a pattern coloring step (S5) for coloring the unique pattern of the concrete.
1차 특수시멘트몰탈, 2차 특수시멘트몰탈, 정리단계, 미장단계, 평면화단계, 뿜칠단계, 문양 착색단계1st special cement mortar, 2nd special cement mortar, cleaning stage, plastering stage, flattening stage, spraying stage, pattern coloring stage
Description
도 1은 본 발명의 일 실시예에 따른 콘크리트 구조물의 면하자 보수 복원과정을 개략적으로 나타낸 공정도.1 is a process diagram schematically showing the process of restoring defects in a concrete structure according to an embodiment of the present invention.
<도면의 주요부호에 대한 설명><Description of Major Symbols in Drawing>
S1 : 정리단계 S2 : 미장단계S1: Cleanup stage S2: Plaster stage
S3 : 평면화단계 S4 : 뿜칠단계S3: Flattening step S4: Spraying step
S5 : 문양 착색단계S5: Glyph Coloring Step
본 발명은 콘크리트 구조물의 면하자를 보수 또는 복원하는 방법에 관한 것으로, 더욱 상세하게는 거푸집 탈형직후 발생되는 면하자(골재분리, 기포, 박리·박락, 표면오염, 파손 등)와 콘크리트 타설후 장시간이 경과하여 발생되는 열화, 환경적 요인에 의한 표면 박리·박락, 오염, 중성화된 표면을 콘크리트 원래의 성질로 보수 또는 복원하는 콘크리트 구조물의 면하자 보수 복원방법에 관한 것이다.The present invention relates to a method for repairing or restoring the surface defects of concrete structures, and more particularly, the surface defects (aggregate separation, air bubbles, peeling / falling, surface contamination, breakage, etc.) generated immediately after the mold demoulding and concrete pouring for a long time. The present invention relates to a method for restoring defects in concrete structures, which repairs or restores the deteriorated surface generated by environmental degradation, surface peeling, peeling, contamination, and neutralized surfaces to their original properties.
일반적으로, 노출콘크리트 공법은 콘크리트 구조물의 표면이 직접 외부에 노 출되도록 마감함으로써 콘크리트 자체의 질감을 미학적으로 표현하여 콘크리트 구조물의 조소적인 미감을 살리고, 별도의 대리석 판넬 등과 같은 외장재를 사용하지 않음으로써 유지, 보수 비용을 절감할 수 있는 콘크리트의 마감방법중 하나이다.In general, the exposed concrete method finishes the surface of the concrete structure to be directly exposed to the outside, thereby aesthetically expressing the texture of the concrete itself, thereby utilizing the ridiculous aesthetics of the concrete structure, and by not using an exterior material such as a marble panel. It is one of the finishing methods of concrete that can reduce maintenance and repair costs.
그런데, 종래에 시행되었던 면하자에 대한 처리방법을 살펴보면 돌출, 오염 등은 적당히 그라인딩하여 갈아내고 골재분리 등 함몰부분에 대해서는 일반시멘트로 적당히 충진하거나 잿물치장하는 방식으로 처리하여 왔다. 이러한 면하자 보수 복원방법은 콘크리트 피복을 손상시킬 뿐만 아니라 면보수 후 콘크리트 본래의 면과 이질·이색감이 발생하게 하여 콘크리트의 미적 아름다움이 손상되고 장시간 경과후 변색, 박리·박락 등의 2차적인 하자를 발생하는 문제점이 있었다.However, looking at the treatment method for the surface defects, which has been conventionally performed, protrusions, contamination, etc., have been ground by grinding properly, and the recessed parts such as the separation of aggregates have been treated in a manner of appropriately filling or lyeing with normal cement. This method of repairing defects will not only damage the concrete cover, but also cause the aesthetics and heterogeneity of the concrete after the repair, which will damage the aesthetic beauty of the concrete. There was a problem that caused the defect.
이에 본 발명은 전술한 바와 같은 종래의 제반 문제점을 해소하기 위하여 안출된 것으로, 콘크리트가 양생되어 거푸집을 탈형한 직후 발생되는 면하자(골재분리, 기포, 박리·박락, 표면오염, 파손 등)와 콘크리트 타설후 장시간이 경과하여 발생되는 열화, 환경적 요인에 의한 표면 박리·박락, 오염, 중성화된 표면을 콘크리트 원래의 성질로 보수 또는 복원할 수 있는 콘크리트 구조물의 면하자 보수 복원방법을 제공하는데 그 목적이 있다.Therefore, the present invention has been devised to solve all the problems of the prior art as described above, and the defects generated immediately after demoulding the formwork of concrete is cured (aggregate separation, bubbles, peeling / peeling, surface contamination, breakage, etc.) and It provides a method for repairing defects in the surface of concrete structures that can repair or restore the deterioration caused by a long time after concrete pouring, surface peeling / falling due to environmental factors, contamination, and neutralized to the original properties of concrete. There is a purpose.
전술한 바와 같은 목적을 달성하기 위해 본 발명에 따른 콘크리트 구조물의 면하자 보수 복원방법은, 하자면을 정리하는 정리단계와, 정리된 면에 1차 특수시멘트몰탈을 미장하는 미장단계와, 미장된 1차 특수시멘트몰탈 양생후 표면을 평면 화하는 평면화단계와, 평면화된 면에 원면과 색상 및 질감 일체화를 위해 액상으로 된 2차 특수시멘트몰탈을 분사하여 접착시키는 뿜칠단계와, 뿜칠된 2차 특수시멘트몰탈의 양생후 콘크리트 고유의 문양을 착색하는 문양 착색단계를 포함하여 이루어진 것을 기술적 특징으로 한다.In order to achieve the object as described above, the defect repair restoration method of the concrete structure according to the present invention, the stage of arranging the fault surface, the plastering step of plastering the primary special cement mortar on the cleaned surface, and the plastered 1 After the curing of the special cement mortar, the flattening step of flattening the surface, the spraying step of spraying and bonding the second special cement mortar, which is a liquid, to integrate the surface, color and texture on the flattened surface, and the second special cement sprayed. After the curing of the mortar is characterized in that it comprises a pattern coloring step for coloring the unique pattern of the concrete.
이하, 본 발명에 따른 콘크리트 구조물의 면하자 보수 복원방법의 바람직한 실시예를 통하여 전술한 바와 같은 구성의 특징과 그 작용을 보다 상세히 설명하기로 한다.Hereinafter, the features and the operation of the above-described configuration through the preferred embodiment of the method for restoring the defect of the concrete structure according to the present invention will be described in detail.
본 발명의 일 실시예에 따른 콘크리트 구조물의 면하자 보수 복원방법은, 하자면을 정리하는 정리단계(S1)와, 정리된 면에 1차 특수시멘트몰탈을 미장하는 미장단계(S2)와, 1차 특수시멘트몰탈의 양생후 그 표면을 평면화하는 평면화단계(S3)와, 평면화된 면에 액상으로 된 2차 특수시멘트몰탈을 분사하여 접착시키는 뿜칠단계(S4)와, 2차 특수시멘트몰탈의 양생후 콘크리트 고유의 문양을 착색하는 착색단계(S5)를 포함하여 이루어진다.The defect repair restoration method of the concrete structure according to an embodiment of the present invention, the rearranging step (S1) for arranging the defect surface, the plastering step (S2) for plastering the primary special cement mortar on the cleaned surface, and the primary After curing the special cement mortar, the planarization step (S3) to planarize the surface, the spraying step (S4) for spraying and bonding the secondary special cement mortar in the liquid to the planarized surface, and after curing the second special cement mortar It comprises a coloring step (S5) for coloring the unique pattern of the concrete.
전술한 정리단계(S1)는 콘크리트 타설직후 발생되는 돌출 또는 타설후 장시간이 경과하여 나타나는 오염, 박리 등의 면하자를 보수 복원하기 위해 면을 평활하게 하는 과정으로 하자면이 원면보다 돌출된 경우에 적용된다. 이 단계에서는 그라인더나 센더를 이용하여 그라인딩 또는 센딩함으로써 하자면을 정리하게 된다.The above-described cleanup step (S1) is a process of smoothing the surface to repair the defects such as the protrusions generated after the concrete pouring or the contamination, peeling, etc., which occur after a long time after pouring, and is applied when the surface is protruded from the original surface. do. In this step, the surface of the defect is cleaned by grinding or sending by using a grinder or a sender.
전술한 미장단계(S2)는 그라인딩면이나 탈락, 함몰된 부분에 대하여 1차 특수시멘트몰탈을 미장·충진하는 과정으로서, 이 과정에서 사용되는 1차 특수시멘트몰탈은 마이크로시멘트 40~50중량%, 활석분말 20~30중량%, 석분 20~30중량%, 분말수지 5~10중량%, 증점제 0.3~0.7중량%, 소포제 0.1~1중량%, 천연섬유 0.1~0.2중량%, 유동화제 0.3~1중량%, 및 무기질안료 0.3~3.5중량%를 포함하여 이루어진다.The above-mentioned plastering step (S2) is a process of plastering and filling the primary special cement mortar on the grinding surface or dropping, the recessed portion, the primary special cement mortar used in this process is 40 to 50% by weight of micro cement, Talc powder 20-30% by weight, stone powder 20-30% by weight, powder resin 5-10% by weight, thickener 0.3-0.7% by weight, defoamer 0.1-1% by weight, natural fiber 0.1-0.2% by weight, fluidizing agent 0.3-1 Wt%, and 0.3 to 3.5% by weight of inorganic pigments.
1차 특수시멘트몰탈의 마이크로시멘트는 콘크리트 제조시 골재와 함께 섞여 타설후 골재를 굳히는 것으로, 구조물의 강도를 결정하는 중요 요소가 되며, 분말도가 5,000~8,000㎠/g인 것을 사용한다.The micro cement of the primary special cement mortar is mixed with aggregate in the manufacture of concrete to harden the aggregate after pouring, and it is an important factor to determine the strength of the structure. It is used with a powder of 5,000 ~ 8,000㎠ / g.
이 때, 마이크로시멘트의 분말도가 5,000㎠/g 미만인 경우에는 분말의 크기가 너무 커서 몰탈의 입자가 너무 거칠어지고 분말도가 8,000㎠/g를 초과하는 경우에는 분말의 크기가 너무 작아 몰탈의 입자가 너무 미세해지기 때문에 적정 강도를 얻지 못하는 단점이 있다. 또한, 성분비가 50중량%를 초과할 경우 강도는 증가하나 인성이 저하되어 균열이 발생하며, 40중량% 미만일 경우 콘크리트 고유강도가 저하된다.
활석분말은 열충격에 대한 저항성과 내열성을 증가시키고 콘크리트 표면에 광택의 조절과 필름(Film)강화 및 오염방지에 도움이 된다. 성분비가 30중량%를 초과할 경우 표면광택은 좋아지나 강도를 저화시키며, 20중량% 미만일 경우 강도는 좋아지나 광택효과가 저하된다.
석분은 몰탈 혼합시 모래 대용으로 사용하는 것으로 보수부분의 충진에 용이하며 마이크로시멘트와 활석과의 혼합시 강도를 증진시킨다. 성분비가 30중량%를 초과할 경우 강도는 강해지나 보수 및 가공능률이 저하되며, 성분비가 20중량% 미만일 경우 작업은 용이하나 콘크리트 고유강도가 저하된다.
분말수지는 몰탈간 필름형성을 통하여 방수성능을 향상시키고 수지가 가지고 있는 수용성 보호 콜로이드로 인하여 몰탈이 물을 보유할 수 있는 능력이 증가되어 필름을 형성함으로써 부재의 휨강도를 증가시키며, 양생과정에서 발생하는 균열을 방지하고 건조 또는 경화 과정에서 바인더로 작용함으로써 유기 및 무기 바탕면과의 접착력, 몰탈의 내마모성 및 유연성을 증대시킨다. 성분비가 10중량%를 초과할 경우 강도와 접착력은 강해지나 경화시간을 지연시키며 보수 및 가공능률이 저하되며, 성분비가 5중량% 미만일 경우 강도 및 접착력을 저하시킨다.
증점제는 물에 용해될 때 소정의 점도를 증대시키기 위한 것으로, 재료의 분리를 방지하고 응집성과 윤활성을 증대시키는 효과를 얻을 수 있다. 성분비가 0.7중량%를 초과할 경우 점도와 윤활성은 증대되나 경화시간을 지연시키고 강도의 저하를 가져오며, 0.3중량% 미만일 경우 경화시간이 빨라지고 강도가 강해지나 점도와 윤활성이 감소된다.
소포제는 시멘트몰탈과 혼합하여 반죽할 때 발생하는 거품을 방지하고 과도한 공기투입량을 감소시키며 몰탈의 밀도를 치밀하게 하여 기포형성을 방지하고 작업의 유연성을 향상시킨다. 성분비가 1중량%를 초과할 경우 수밀도는 증가되나 인성 및 탄성을 저하시키며, 0.1중량% 미만일 경우 혼합시 발생되는 기포를 방지하지 못하며 내구성을 저하시킨다.
천연섬유는 몰탈이나 시멘트 복합체의 소성수축균형을 억제하고 안정화하여, 인성, 내충격성 및 인장강도 등을 증진시킴으로써 역학적 성질을 개선하여 피로거동에 대하여 저항할 수 있는 힘을 높여 내구성을 증대시킨다. 성분비가 0.2중량%를 초과할 경우 인성 및 균열현상은 방지되나 강도 및 내구성이 떨어지며, 0.1중량% 미만일 경우 양생후 균열이 발생하기 쉽다.
유동화제는 혼합물간에 강력한 분산효과를 나타내어 강도의 저하없이 작업성을 증가시키며, 유동화제의 고감수 효과는 초기 및 종결강도를 현저히 증가시키고 시멘트 사용량을 감소시키는 역할을 한다. 성분비가 1중량%를 초과할 경우 수밀도는 증가하나 수축이완작용을 저하시켜 균열을 발생시키며, 0.3중량% 미만일 경우 밀도를 저하시켜 콘크리트 고유 강도를 발현시키지 못한다.
무기질 안료는 혼합물에 색상을 부여하는 것으로, 성분비가 3.5중량%를 초과하거나 0.3중량% 미만일 경우에는 콘크리트의 고유색상이 발현되지 못한다.At this time, when the microcement powder is less than 5,000 cm 2 / g, the size of the powder is so large that the particles of mortar become too coarse, and when the powder degree exceeds 8,000 cm 2 / g, the powder is too small and the size of the mortar particles Since it becomes too fine, there is a disadvantage that can not obtain the appropriate strength. In addition, when the component ratio exceeds 50% by weight, the strength is increased, but the toughness is lowered, and cracking occurs, and when it is less than 40% by weight, the intrinsic strength of the concrete is lowered.
Talc powder increases resistance to thermal shock and heat, and helps to control gloss on concrete surfaces, strengthen film and prevent contamination. If the component ratio exceeds 30% by weight, the surface gloss is improved but the strength is lowered. If the content ratio is less than 20% by weight, the strength is improved but the gloss effect is lowered.
Stone powder is used as a substitute for sand when mixing mortar, and it is easy to fill the repair part and enhances the strength when mixing microcement with talc. If the component ratio exceeds 30% by weight, the strength is strong, but the maintenance and processing efficiency is lowered. If the component ratio is less than 20% by weight, the work is easy, but the intrinsic strength of the concrete is lowered.
Powder resin improves the waterproofing performance through the film formation between mortars, and the resin's water-soluble protective colloid increases the ability of mortar to hold water, thus forming the film to increase the bending strength of the member. It prevents cracks and acts as a binder during drying or curing, increasing adhesion to organic and inorganic substrates, abrasion resistance and flexibility of mortar. If the component ratio exceeds 10% by weight, the strength and adhesion will be strong, but the curing time will be delayed, and the repair and processing efficiency will be reduced.
The thickener is for increasing the predetermined viscosity when dissolved in water, and can prevent the separation of materials and increase the cohesiveness and lubricity. If the content ratio exceeds 0.7% by weight, the viscosity and lubricity increase but delays the curing time and decreases the strength. When the content ratio is less than 0.3% by weight, the curing time is increased and the strength is increased, but the viscosity and lubricity decrease.
Antifoaming agent prevents foaming when mixing with cement mortar, reduces excessive air input, densifies mortar density, prevents bubble formation and improves work flexibility. If the component ratio exceeds 1% by weight, the water density is increased, but the toughness and elasticity are lowered. If the content ratio is less than 0.1% by weight, it does not prevent bubbles generated during mixing and the durability is lowered.
Natural fiber suppresses and stabilizes plastic shrinkage balance of mortar or cement composite, improves mechanical properties by improving toughness, impact resistance and tensile strength, thereby increasing durability to resist fatigue behavior, thereby increasing durability. If the component ratio is more than 0.2% by weight, toughness and cracking are prevented, but strength and durability are inferior. If the content ratio is less than 0.1% by weight, cracking tends to occur after curing.
The fluidizing agent exhibits a strong dispersing effect between the mixtures to increase workability without degrading strength, and the high susceptibility effect of the fluidizing agent significantly increases the initial and termination strengths and serves to reduce the amount of cement used. If the component ratio exceeds 1% by weight, the water density increases, but the shrinkage relaxation action is lowered, and cracking occurs. If the content ratio is less than 0.3% by weight, the density is lowered so that the concrete inherent strength cannot be expressed.
Inorganic pigments impart color to the mixture, and when the component ratio is more than 3.5% by weight or less than 0.3% by weight, the intrinsic color of the concrete is not expressed.
전술한 평면화단계(S3)는 1차 특수시멘트몰탈의 미장으로 인해 발생되는 돌출부분을 센더나 사포등으로 평면화하여 원면과 일치하도록 하는 과정이다.The above-described flattening step (S3) is a process of flattening the protrusions caused by the plastering of the primary special cement mortar with a sender or sandpaper to match the original surface.
전술한 뿜칠단계(S4)는 전단계까지의 작업으로 원면과의 이색현상이 발생하거나 거친면이 발생하는 경우 그 면을 본래의 콘크리트면과 같이 매끄럽게 처리하기 우해 평면화단계(S3)에서 평면화된 면에 2차 특수시멘트몰탈을 분사하여 접착시키는 과정으로서, 이 과정에서 사용되는 액상형 2차 특수시멘트몰탈은 마이크로시멘트 40~50중량%, 활석분말 40~50중량%, 분말수지 5~10중량%, 증점제 0.3~0.7중량%, 소포제 0.1~1중량%, 천연섬유 0.1~0.2중량%, 유동화제 0.3~1중량%, 및 무기질안료 0.3~3.5중량%를 포함하여 이루어진다.In the above-described spraying step (S4), when the dichroic phenomenon with the original surface or the rough surface occurs in the operation up to the previous stage, the surface is smoothed in the planarizing step (S3) to treat the surface smoothly as the original concrete surface. Secondary special cement mortar is sprayed and bonded. The liquid secondary cement special mortar used in this process is 40 to 50% by weight of micro cement, 40 to 50% by weight of talc powder, 5 to 10% by weight of powder resin, thickener It comprises 0.3 to 0.7% by weight, antifoaming agent 0.1 to 1% by weight, natural fiber 0.1 to 0.2% by weight, fluidizing agent 0.3 to 1% by weight, and inorganic pigments 0.3 to 3.5% by weight.
2차 특수시멘트몰탈의 마이크로시멘트는 콘크리트 제조시 골재와 함께 섞여 타설후 골재를 굳히는 것으로 구조물의 강도를 결정하는 중요 요소가 되며 분말도가 6,000~8,000㎠/g것을 사용하며, 활석분말은 325메쉬(mesh) 이상인 것을 사용한다.The micro cement of the secondary special cement mortar is mixed with aggregate in the manufacture of concrete to harden the aggregate after pouring, which is an important factor in determining the strength of the structure. The powder is used with 6,000 ~ 8,000㎠ / g, and the talc powder is 325 mesh. Use more than (mesh).
이 때, 마이크로시멘트의 분말도가 6,000㎠/g 미만인 경우에는 분말의 크기가 너무 커서 몰탈의 입자가 너무 거칠어지고 분말도가 8,000㎠/g를 초과하는 경우에는 분말의 크기가 너무 작아 몰탈의 입자가 너무 미세해지기 때문에 적정 강도를 얻지 못하는 단점이 있다. 그리고, 활석분말의 크기기 325mesh 미만인 경우에도 몰탈의 입자가 너무 거칠어지는 단점이 있다.
한편, 2차 특수시멘트몰탈을 구성하는 성분인 마이크로시멘트, 활석분말, 분말수지, 증점제, 소포제, 천연섬유, 유동화제 및 무기질 안료의 특성은 1차 특수시멘트몰탈을 구성하는 구성성분의 설명과 동일하므로 그에 대한 설명을 생략하기로 한다. 또한, 이들 성분들이 2차 특수시멘트몰탈을 구성할 때 수치한정범위만 다를 뿐 수치한정이유는 동일하다.At this time, when the microcement powder is less than 6,000 cm 2 / g, the size of the powder is so large that the particles of mortar become too coarse, and when the powder degree exceeds 8,000 cm 2 / g, the powder is too small and the size of the mortar particles Since it becomes too fine, there is a disadvantage that can not obtain the appropriate strength. In addition, even when the size of the talc powder is less than 325mesh has a disadvantage that the particles of the mortar is too rough.
On the other hand, the characteristics of the microcement, talc powder, powder resin, thickener, antifoaming agent, natural fiber, fluidizing agent, and inorganic pigment which constitute the secondary special cement mortar are the same as the description of the components constituting the primary special cement mortar. Therefore, description thereof will be omitted. In addition, when these components constitute the secondary special cement mortar, only the numerical limitation range is different, and the numerical limitation is the same.
전술한 문양 착색단계(S5)는 뿜칠된 2차 특수시멘트몰탈의 양생후 별도의 착색도구(예컨대, 부직포)에 콘크리트색을 갖는 도료를 묻혀 콘크리트 고유의 문양을 착색하는 과정이다.The above-described pattern coloring step (S5) is a process of coloring a unique pattern of concrete by burying a paint having a concrete color in a separate coloring tool (for example, a nonwoven fabric) after curing of the second special cement mortar sprayed.
이상과 같이 본 발명의 바람직한 실시예에 따른 콘크리트 구조물의 면하자 보수 복원방법을 첨부된 도면을 참조로 설명하였으나, 본 발명은 본 명세서에 상세히 설명된 실시예와 도면에 한정되지 아니하며, 발명의 기술사상 범위 내에서 다양한 변형이 이루어질 수 있다.As described above with reference to the accompanying drawings, the defect repair and restoration method of the concrete structure according to a preferred embodiment of the present invention, the present invention is not limited to the embodiments and drawings described in detail herein, the description of the invention Various modifications can be made within the spirit and scope.
전술한 바와 같이 구성된 본 발명 콘크리트 구조물의 면하자 보수 복원방법에 따르면, 콘크리트가 양생되어 거푸집을 탈형하는 직후에 발생되는 면하자(골재분리, 기포, 박리, 표면오염, 파손 등)와 거푸집 탈형후 장시간이 경과하면서 발생 되는 열화, 환경적 요인에 의한 표면 박리·박락, 오염, 중성화된 표면을 콘크리트 원래의 성질과 질감으로 보수 복원할 수 있다.According to the repair method for repairing the defect of the concrete structure of the present invention configured as described above, after the mold is cured and the mold is demolished, the defect (aggregate separation, air bubbles, peeling, surface contamination, breakage, etc.) and the mold demoulding after It is possible to repair and restore the original properties and textures of the concrete to the deterioration that occurs over a long period of time, surface peeling, peeling, contamination and neutralization due to environmental factors.
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