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A platform for research: civil engineering, architecture and urbanism
Method for repairing cracks in concrete constructions
The present invention relates to a method for repairing a crack, configured to repair a crack, a defected joint, and various gaps generated outside a concrete structure (building). According to the present invention, when mortar treatment is performed by using a mortar strengthening agent prepared by adding a water soluble hydrazine derivative to EVA resin emulsion containing acetic acetylated polyvinyl alcohol, an acetic acetyl group and a hydrazino group are cross linked so that adhesion and water resistance of the mortar are improved. According to the present invention, crack elongation is generated by elasticity and elongation of aqueous polyurethane in a putty material, and thus, it is possible to suppress a crack from generating on a surface by the crack elongation which tracks a change in a cracked area caused by behavior of a parent concrete body. In addition, aggregation of calcium carbonate is not generated since the calcium carbonate is surface treated, and a binding force of the calcium carbonate with a polymer material is improved so that the putty material may exhibit uniform dispersion and fluidity, thereby improving workability and adhesion.
본 발명은 콘크리트 구조물(건축물)의 외부에 발생한 균열과 조인트 결함부위, 각종 틈새 등을 보수하는 균열 보수 방법에 관한 것이다. 본 발명에 따르면 아세트아세틸화 폴리비닐알코올을 포함한 EVA 수지 에멀젼에 수용성 하이드라진 유도체를 첨가하여 제조된 몰탈 강화제에 의해, 몰탈 처리를 할 때에 아세트아세틸기와 하이드라지노기가 가교 반응하여 몰탈의 부착성과 내수성이 향상된다. 본 발명에 따르면, 퍼티재에서 수성 폴리우레탄의 탄성과 신장에 의해 콘크리트 모체의 거동에 따른 균열부위의 변화를 추종하는 균열추종성으로 표면에 균열을 억제하는 것이 가능해진다. 또한, 표면처리가 된 탄산칼슘에 의해 탄산칼슘의 응집이 발생하지 않고 고분자 재료와 결합력이 향상되므로, 퍼티재가 균일한 분산성과 유동성을 나타내어 작업성 및 부착성이 향상되는 것이 가능해진다.
Method for repairing cracks in concrete constructions
The present invention relates to a method for repairing a crack, configured to repair a crack, a defected joint, and various gaps generated outside a concrete structure (building). According to the present invention, when mortar treatment is performed by using a mortar strengthening agent prepared by adding a water soluble hydrazine derivative to EVA resin emulsion containing acetic acetylated polyvinyl alcohol, an acetic acetyl group and a hydrazino group are cross linked so that adhesion and water resistance of the mortar are improved. According to the present invention, crack elongation is generated by elasticity and elongation of aqueous polyurethane in a putty material, and thus, it is possible to suppress a crack from generating on a surface by the crack elongation which tracks a change in a cracked area caused by behavior of a parent concrete body. In addition, aggregation of calcium carbonate is not generated since the calcium carbonate is surface treated, and a binding force of the calcium carbonate with a polymer material is improved so that the putty material may exhibit uniform dispersion and fluidity, thereby improving workability and adhesion.
본 발명은 콘크리트 구조물(건축물)의 외부에 발생한 균열과 조인트 결함부위, 각종 틈새 등을 보수하는 균열 보수 방법에 관한 것이다. 본 발명에 따르면 아세트아세틸화 폴리비닐알코올을 포함한 EVA 수지 에멀젼에 수용성 하이드라진 유도체를 첨가하여 제조된 몰탈 강화제에 의해, 몰탈 처리를 할 때에 아세트아세틸기와 하이드라지노기가 가교 반응하여 몰탈의 부착성과 내수성이 향상된다. 본 발명에 따르면, 퍼티재에서 수성 폴리우레탄의 탄성과 신장에 의해 콘크리트 모체의 거동에 따른 균열부위의 변화를 추종하는 균열추종성으로 표면에 균열을 억제하는 것이 가능해진다. 또한, 표면처리가 된 탄산칼슘에 의해 탄산칼슘의 응집이 발생하지 않고 고분자 재료와 결합력이 향상되므로, 퍼티재가 균일한 분산성과 유동성을 나타내어 작업성 및 부착성이 향상되는 것이 가능해진다.
Method for repairing cracks in concrete constructions
콘크리트 구조물의 외부 균열 보수 방법
KIM EUN JUNG (author)
2019-10-29
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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