Light gray 노출 콘크리트의 性能 : Urban Hive 建築現場을 中心으로

다국어 초록 (Multilingual Abstract)

Recently with the elevation of the standard of living and sense, the mental composure and the desire for affluence in a daily living highly demand the amenity and satisfaction with living. Accordingly the Architectural products are being developed in consideration of a user's sense like agreeableness rather than the center of performance in the past. This is also applied to the materials of architecture and expresses a higher level of request according to the performance of request rather than the satisfaction of the basic level of request by means of specifications. Therefore, I am putting an additional item other than high performance, high flow and high strength.
The study is to define colored concrete expecting the gradual increase of demand in future and estimate the infinite possibility that concrete has in future based on current applied cases of Urban Hive.
In the currents of times concrete structures increased in the use of the sensible phase but the definition and classification therein are insufficient, so it is necessary to survey and study the property of the concrete used for colored concrete, exposed concrete and other finishing.
Therefore, in this research it intend to define and classify high Architectural concrete expecting the gradual increase of demand in future and estimate the infinite possibility that concrete has in future based on current domestic and abroad situations and applied cases.

This thesis consists of as follows.

This study is a part of the research about such colored concrete.

Chapter 1 describes the introduction of this study, where we the objective, content and scope of this thesis in accordance with the increase of the demand in Architectural concrete.
Chapter 2 describes a summary of Architectural concrete. we looked into the definition of colored concrete and preview and presented the general and material construction features and notes Architectural concrete has.
Chapter 3 describes investigation of applicable possibility of colored concrete. we investigate a kind of factor that causes problem from plan to appling to colored concrete. and analyze mock-up test.
Chapter 4 describes currently applied colored concrete of Urban Hive. we checked the required performance and necessary material features , and factor through carrying out.
In Chapter 5, as a general conclusion of this paper, we thought of the future applicability on the basis of the analysis on the understanding and the applied cases of colored concrete based on current applied cases of Urban Hive.

The result of this thesis can be summarized as follows.

◎ Summary of colored concrete performance

(1) Colored concrete is required to be carful and give attention than general concrete. because condition change of unit water content, material couldn't keep up homogenization of building color over all. therefore it is required to check influence factor that is color and a kind of cement, aggregate, admixture, pigment

(2) In general, colored concrete doesn't use other finishing materials on the surface of concrete and expresses itself by exposure and this area of sensibility concrete is expressed as Exposed Concrete. As sensibility concrete uses the surface itself as a finishing material, and in case of the same surface it is very important to express the same quality and color. Generally, the factors affecting the finishing surface are; ① Applied materials in concrete, ② Combination design and production method, ③ Cast and form oil, ④ Slip form method, ⑤ Hardening concrete state. Next, I'll suggest the factors affecting these colors such as general standard of sensibility concrete, request affairs and the property of the materials of concrete.

◎ Preview of color concrete applying to Urban Hive

(1) Urban Hive project considers color pigment for the homogenized color, reducing cracking, the exterior structure of a building of honeycomb type, high strength concrete, using high-flowing concrete for dense filling, modifying ratio of chemical admixture for controling segregation, special admixture of treating surface for durability and water-repellent.

(2) We investigate a problem according to a kind of mold and under the weather, effect of hydration heat according to structure shape, variation of outside strength according to curing time, a ratio and a kind of pigment for requested color through testing mock-up from starting work. ultimately we choice construction work in close proximity initial plan through confirmation of an owner and an designer

(3) The problem to generate paste leakage in the surface solves change of pigment ratio, aggregate ratio (crushed aggregate : natural aggregate). a varity of problem is solved by change of treating surface of mold . also we could get the adequate color according to variation of pigment, cement.

◎ Color concrete applying to Urban Hive

(1) Surface has structure that is consist of colored concrete of punching type of circle. the structure isn't divided into column, beam and wall. also, that has design of honycomb that regularly connects with RC cell of circle of 400mm thickness and 1050mm diameters this surface has a variety of prospect through an open window of circle and dynamic space by sunshine condition in indoor space as well as structure role.

(2) Quality control of concrete is important in placing color concrete. but it also recommend attention to setting form, arrangement of bar, coating surface after removal of form, for express of requiring performance

(3) In case of form, it needs to coat special parting agent close to form. it needs to compact in order of precedence. also when working, should keep in mind so that tamper does not close on the mold surface. high-flowing concrete of part exposed to air becomes fast. so we must progress tamping work at the proper speed.

목차 (Table of Contents)

• 제1장 서론 1
• 1.1 연구의 배경 및 목적 1
• 1.2 연구의 내용 및 범위 3
• 제2장 컬러 노출 콘크리트의 성능개요 6
• 2.1 컬러 노출 콘크리트의 정의 6
• 2.2 컬러 노출 콘크리트의 재료적 특징 13
• 2.3 컬러 노출 콘크리트의 시공 시 유의사항 19
• 제3장 Urban Hive 의 컬러 노출 콘크리트의 적용성 검토 26
• 3.1 개 요 26
• 3.2 컬러 노출 콘크리트의 설계적용 반영 28
• 3.3 컬러 노출 콘크리트의 사전 검토사항 32
• 3.4 컬러 노출 콘크리트의 mock-up 시험 39
• 제4장 Urban Hive 의 컬러 노출 콘크리트의 현장적용 53
• 4.1 현장 개요 53
• 4.2 컬러 노출 콘크리트의 현장 적용 55
• 4.3 컬러 노출 콘크리트의 표면처리 61
• 제5장 종합결론 65
• 참고문헌 68
• ABSTRACT 71