KR101296170B1

KR101296170B1 - A construction method for prevention of a concrete surface delamination status

Info

Publication number: KR101296170B1
Application number: KR1020120107344A
Authority: KR
Inventors: 김순연
Original assignee: 김순연; 흥송건설주식회사
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2013-08-14

Abstract

PURPOSE: A construction method for preventing the surficial delamination of concrete is provided to increase surface abrasion resistance by mixing shine Ag and to reduce maintenance costs by obtaining a concrete surface without defects. CONSTITUTION: A construction method for preventing the surficial delamination of concrete comprises the following steps: pouring ready-mixed concrete which is mixed to be used for the bottom surface of exposed mass concrete in the field; screeding at a proper level for increasing the planarity and level diagram of a surface; performing a primary floating task using a disk in order to remove surface water and laitance; paving shine Ag on the concrete and performing a double floating task; performing a double troweling task in order to increase surface abrasion resistance and obtain a smooth surface; and performing a plastic troweling task for surface gloss. [Reference numerals] (AA) Start; (BB) End; (S1) Pour ready-mixed concrete and screed; (S2) Perform a primary floating task using a disk; (S3) Apply a proper amount of shine Ag; (S4) Perform a secondary floating task on the surface of the shine Ag; (S5) Perform a double troweling after a predetermined period of time; (S6) Perform a plastic troweling task for surface gloss

Description

Construction method for prevention of a concrete surface delamination status

본 발명은 콘크리트 표면박리현상 방지를 위한 시공방법에 관한 것으로, 특히 노출 콘크리트 바닥 기계미장 시공시 여러가지 요인으로 발생되는 표면층 분리 즉, 박리 현상을 방지할 수 있는 시공방법에 관한 것이다.The present invention relates to a construction method for preventing the concrete surface peeling phenomenon, and more particularly to a construction method that can prevent the surface layer separation, that is, peeling phenomenon caused by various factors during the construction of exposed concrete floor mechanical plastering.

일반적으로 콘크리트 재료인 KS배합규격 레미콘을 노출 콘크리트바닥에 적용시 시공즉시 또는 사용 중 층분리 즉, 박리 현상이 발생된다.In general, when the KS composite standard concrete concrete, which is a concrete material, is applied to an exposed concrete floor, delamination occurs immediately or during use.

이러한 박리현상으로는 넓은 범위의 층간박리(Delamination:얇은 층으로 갈라짐)와, 좁은 범위의 표층과 심층 사이가 부풀 듯이 떨어지는 브리스터(Blister)와, 콘크리트 표층 속의 팽창성 물질이 시멘트나 물과의 작용에 팽창하여 표면을 파괴하여 패이게 되는 팝 아웃(Pop Out) 등이 있다.These delaminations include a wide range of delamination, blisters that swell between the narrow and deep layers, and the expansive material in the concrete surface acts as cement or water. And pop outs that swell and destroy surfaces.

또한, 종래에는 콘크리트 기계미장 이후 별도로 에폭시, 우레탄, 비닐계 타일 등을 사용하여 2차 마감공정을 수행해야 하므로 공사기간이 길어지고, 공사비용이 많이 들게 됨은 물론, 각종 유기화합물을 사용하는 2차 마감재로 인하여 친환경적이지 못한 결점이 있었다.In addition, since the secondary finishing process must be performed separately using epoxy, urethane, vinyl-based tiles, etc. after the concrete machine plastering, the construction period is long, and the construction cost is high, and the secondary uses various organic compounds. There was a defect that was not environmentally friendly due to the finish.

본 발명은 이와 같은 종래의 결점을 해결하기 위한 것으로, 본 발명의 목적은, 기존 구조용 콘크리트 재료인 KS배합규격 레미콘을 노출 콘크리트바닥에 적용할 시 발생되는 문제점 중에서 박리현상을 최소화하며, 표면 마모저항도를 향상시킬 수 있는 콘크리트 표면박리현상 방지를 위한 시공방법을 제공하는데 있다.The present invention is to solve such a conventional defect, an object of the present invention, minimizes the peeling phenomenon among the problems caused when applying the KS composite standard ready-mixed concrete, an existing structural concrete material to the exposed concrete floor, surface wear resistance To provide a construction method for preventing the concrete surface peeling phenomenon can be improved.

또한, 본 발명의 다른 목적은, 노출 콘크리트바닥 표면박리 방지시공방법 자체가 마감재 역할을 대신하므로 콘크리트 기계미장 이후 시공하는 별도의 2차 마감공정을 생략할 수 있어 공사기간을 단축하고 공사비를 절감할 수 있으며, 마감재인 에폭시, 우레탄, 비닐계 타일 등을 사용하지 않아 친환경 건축시공을 도모하는 콘크리트 표면박리현상 방지를 위한 시공방법을 제공하는데 있다.In addition, another object of the present invention, because the exposed concrete floor surface peeling construction method itself takes the role of the finishing material can be omitted a separate secondary finishing process to be installed after the concrete machine plastering to shorten the construction period and reduce construction costs It is possible to provide a construction method for preventing the surface peeling of concrete to promote eco-friendly construction without using epoxy, urethane, vinyl tiles, and the like as a finishing material.

이와 같은 목적을 달성하기 위한 본 발명은, 주요자재인 레미콘의 배합시 박리현상의 원인 요인을 제거하여 박리현상을 방지하도록 배합을 조정하고, 콘크리트 양생시 발생되는 갇힌 공기 및 잉여수가 대기중으로 효과적으로 빠져나오게 하기 위하여 통기 및 통수 역할을 하는 샤인(Shine) Ag(Abrasive:연마재)를 혼입시공하며, 노출 콘크리트바닥 기계미장시 샤인 Ag의 노출을 방지하고 미세공극을 유지하기 위한 미장장비의 투입단계와 시공시점을 선정하는 시공방법으로 콘크리트 표면박리현상을 방지 할 수 있는 시공방법을 제공하는데 있다.In order to achieve the above object, the present invention is to adjust the formulation to prevent the phenomenon of peeling phenomenon by mixing the ready-mixed concrete, which is the main material, to prevent the peeling phenomenon, the trapped air and surplus water generated during concrete curing effectively escape into the atmosphere Shine Ag (Abrasive) is used to mix airflow and water flow, and the stage and construction of plastering equipment to prevent exposure of shine Ag and maintain micropores when the exposed concrete floor is laid. The construction method to select the time point is to provide a construction method that can prevent the surface peeling of concrete.

이상과 같은 본 발명은 노출 콘크리트바닥을 선호하는 물류센타, 정밀공장바닥, 대형유통매장 등에서 콘크리트 기계미장 이후, 박리현상으로 발생되는 문제점 등을 은닉하기 위해 시공하는 2차 마감공정을 생략할 수 있어 마감자재인 에폭시, 우레탄, 비닐계 타일 등을 사용하지 않으므로 친환경 건축시공을 도모할 수 있는 효과가 있다.The present invention as described above can omit the secondary finishing process to conceal the problems caused by the peeling phenomenon, after the concrete machine plastering in logistics centers, precision factory floors, large distribution stores, etc. that prefer exposed concrete floors It does not use epoxy, urethane, vinyl tiles as finishing materials, so there is an effect to promote eco-friendly construction.

즉, 본 발명에 의한 노출 콘크리트바닥 표면박리 방지 시공법은 그 자체로써 마감재 역할을 대신하므로 각종 유기화합물을 사용하는 2차 마감공정을 생략할 수 있어 친환경적 건축시공이 가능하며, 2차 마감공정 생략으로 전체 공사기간을 단축 및 공사비용을 절감할 수 있음은 물론, 샤인 Ag 혼입시공으로 표면마모저항도가 증대되고, 하자 없는 콘크리트바닥을 구현하여 향후 유지관리비를 대폭 절감할 수 있는 효과가 있다. That is, the exposed concrete floor surface peeling construction method according to the present invention can take the role of the finishing material in itself, so that the secondary finishing process using various organic compounds can be omitted, thereby enabling eco-friendly construction and eliminating the secondary finishing process. In addition to shortening the overall construction period and reducing the construction cost, the surface wear resistance is increased by the mixing of shine Ag, and the concrete floor without defects can be realized to significantly reduce the maintenance cost in the future.

도 1은 본 발명의 전체적인 공정순서도를 나타낸 도면
도 2는 본 발명에 의한 샤인 Ag 혼입시공과 일반시공에 따른 결과를 비교한 도면이다.1 is a view showing the overall process flow chart of the present invention.
2 is a view comparing the results according to the shine Ag mixing and general construction according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참고로 하여 상세히 설명하면 다음과 같다. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 전체적인 작업공정을 순서대로 도시한 것으로, 노출 콘크리트 바닥에 적용하는 박리방지 시공 방법은 첫째, 노출콘크리트 바닥 용도로 배합조정된 레미콘을 현장에서 타설하고 표면의 평탄도와 레벨도를 높이기 위해 현장에 적합한 스크리드로 스크리딩한다 (S1공정).Figure 1 shows the overall work process of the present invention in order, the peeling prevention construction method applied to the exposed concrete floor is first, in the field of the mixed concrete mixed with the concrete concrete for the exposed concrete floor use and the surface flatness and level diagram In order to increase the screed with a suitable screed (S1 process).

단, 상기 스크리딩시 레이저 등의 다양한 방법으로 적용가능하다.However, the screening may be applied by various methods such as a laser.

둘째, 일정시간이 지나면 표면수와 레이턴스를 제거하기 위해 디스크 원판으로 일차플로팅 작업을 수행한다. (S2공정).Secondly, after a certain period of time, a primary plotting operation is performed on the disk disc to remove surface water and latency. (S2 process).

셋째, 시공환경 및 레미콘 물성에 따라 1.7~2.5mm 입경을 가진 샤인 Ag를 1.5kg/m2 수량으로 타설된 콘크리트 위에 균일하게 포설한다(S3공정). 여기서 상기 샤인 Ag에는 금강사와 규사(Silica Sand)가 포함되어 있다. Third, depending on the construction environment and ready-mixed concrete properties, shine Ag with 1.7 ~ 2.5mm particle diameter is uniformly laid on 1.5kg / m2 cast concrete (S3 process). Herein, the shine Ag includes gold steel sand and silica sand.

넷째, 샤인 Ag가 콘크리트 표층에 노출되지 않고 콘크리트 심층과 긴결재 역할(붙잡아주는 역할) 및 통기, 통수 역할을 할 수 있도록 더블 플로우팅 작업을 수행한다 (S4공정).Fourth, double floating work is performed so that the shine Ag can play the role of deep concrete and long binding material (holding role) and aeration, water flow without being exposed to the concrete surface layer (S4 process).

다섯째, 일정시간이 지나면 고 하중 장비로 표면의 마모 저항도를 증대시키고 매끈한 표면을 구현하기 위해 더블 트로웰링(Double Troweling)작업을 수행한다 (S5공정).Fifth, after a certain time, a double troweling operation is performed to increase the wear resistance of the surface with high load equipment and to realize a smooth surface (S5 process).

여섯째, 표면광택을 위해 플라스틱 트로웰링 작업을 수행하여 마무리한다 (S6공정).Sixth, to finish the plastic trowelling for surface gloss (S6 process).

한편, 상기 노출콘크리트바닥에 적용하는 박리현상방지를 위한 레미콘 배합시 투입되는 즉, 레미콘 1m3에 투입되는 자재중량 및 자재별 구성비는 다음 [표 1]과 같다.On the other hand, the material weight and the composition ratio for each material that is added to the ready-mixed concrete compound to prevent the peeling phenomenon applied to the exposed concrete floor, 1m3 ready-mixed concrete is as follows [Table 1].

주요자재
물
포틀랜드
시멘트

모래
굵은골재

PC혼화제
계
중량

150kg
350kg
790kg
1080kg
2kg
2,372kg
구성비
6.32%
14.76%
33.31%

45.53%
0.08%
100%
베쳐플랜트 믹싱 시간:120초 , 샤인 Ag는 현장포설: 1.5kg/m2

(레미콘규격 25-27-150 적용기준이며, 규격조정시 변동됨)
즉, 노출 콘크리트바닥에 적용하는 박리방지를 위한 레미콘 배합시 레미콘 1m3당(총중량:2,372kg) 투입되는 주요자재는 물:150kg, 포틀랜드 시멘트: 350kg, 모래량:790kg, 굵은골재량:1080kg이고, 고성능 감수제인 PC혼화제는 2kg를 혼입하며, 이렇게 배합하여 얻은 레미콘 1m3의 총 중량은 2,372kg이다.
따라서, 레미콘 1m3의 자재별 구성비는 물:6.32%, 포틀랜드시멘트:14.76%, 모래:33.31%, 굵은골재:45.53%, PC혼화제:0.08% 로 구성된다.
상기와 같이 배합하였을 경우 레미콘의 물성을 보기 위한 물/시멘트비(W/C)는 42.86%이며, 잔골재율(S/A)은 42.25%, PC혼화제율 (PC혼화제/시멘트)은 0.57%이다.
Main material
water
Portland
cement

sand
Coarse aggregate

PC admixture
system
weight

150 kg
350 kg
790 kg
1080 kg
2 kg
2,372 kg
Composition ratio
6.32%
14.76%
33.31%

45.53%
0.08%
100%
Batch plant mixing time: 120 seconds, Shine Ag field installation: 1.5kg / m2

(Standards for ready-mixed concrete specification 25-27-150 and fluctuate upon standard adjustment)
In other words, when mixing the ready-mixed concrete ready to be exposed to the exposed concrete floor, the main materials added per 1m3 of concrete (total weight: 2,372kg) are water: 150kg, portland cement: 350kg, sand: 790kg, coarse aggregate: 1080kg, and high performance. PC mixing agent, a water reducing agent, is mixed with 2 kg, and the total weight of the ready mixed concrete 1 m3 is 2,372 kg.
Therefore, the composition ratio of 1m3 ready-mixed concrete is composed of water: 6.32%, portland cement: 14.76%, sand: 33.31%, coarse aggregate: 45.53%, and PC admixture: 0.08%.
When blended as above, the water / cement ratio (W / C) to see the properties of ready-mixed concrete is 42.86%, the aggregate aggregate (S / A) is 42.25%, and the PC admixture rate (PC admixture / cement) is 0.57%.

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따라서, 상기와 같이 노출 콘크리트바닥 용도로 배합 조정된 레미콘은 자재가 원인이 되어 발생하는 콘크리트 박리 현상을 방지할 수 있는 것이다.Therefore, the ready-mixed concrete mixed for the exposed concrete floor as described above is to prevent the concrete peeling phenomenon caused by the material.

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Claims

The first process of placing and adjusting ready-mixed concrete mixed concrete for exposed concrete floor and screed with suitable screed for site to increase surface flatness and level,
A second process of performing a primary plotting operation on a disk disc to remove surface water and latency after a certain time,
3rd process of installing shine Ag on the concrete cast at the site,
4th process of performing double floating operation so that the shine Ag can be exposed to the deep concrete layer, as a long binding material, and acts as a ventilation and water passage without being exposed to the concrete surface layer,
A fifth process of performing a double troweling operation to increase the wear resistance of the surface with a high load equipment and to realize a smooth surface after a certain time;
Construction method for preventing the concrete surface peeling phenomenon characterized by consisting of a sixth step of performing a plastic trowelling operation for surface gloss.

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According to claim 1, wherein the Shin (Shine) Ag, comprising a geumgangsa and silica sand, has a 1.7 ~ 2.5mm particle diameter, the installation method for preventing the concrete surface peeling phenomenon, characterized in that installed in 1.5kg / m2.