• The Journal of the Acoustical Society of Korea
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• v.40 no.6
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• pp.671-677
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• 2021

The present study aims to investigate the influence of the water to binder ratio of finishing mortar on the floor impact sound of apartments. For this, same resilient materials Expanded Polystyrene (EPS) with constant dynamic stiffness and different mortar layers with 52 %, 66 % and 72 % water to binder ratio respectively were used to build floating floor structures on which floor impact sounds were measured in standard testing facilities. As a result, it was found that light-weight floor impact sound was transmitted well when the water to binder ratio was 52% due to the high density. In case of heavy-weight floor impact sounds, since water to binder ratio of finishing mortar becomes higher as the weight of upper layer of resilient material lighter, it was shown that the natural frequency of floating floor structure moves to 63 Hz bandwidth which eventually cause a higher sound pressure level of floor impact sound. Thus, effect of water to binder ratio of mortar on the heavy-weight floor impact sounds was investigated.

• Proceedings of the SAREK Conference
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• 2008.06a
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• pp.981-985
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• 2008

Construction company's role is getting bigger recently because of interest of indoor air quality problem. The using environment-friendly building finishing material is the most benefit method to reduce pollutants in house. It is confirmed the actual condition of environment-friendly building finishing material such as wallpapers, wooden flooring boards, glues, paints, adhesives, plaster boards that are used the work of apartment construction in 2006-2007. It shows that environment-friendly materials have excellent grade mostly, general materials have pass I, pass II grade mostly and are high TVOC emission.

• KIEAE Journal
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• v.12 no.6
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• pp.99-106
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• 2012

This research tried to analyze the effects of ecological materials 'hwang-toh (yellow soil)' on indoor environments. For this purpose, two full scale mock-ups were constructed: one with silk wall paper, which is generally used for indoor finishing and the other with hwang-toh, which is the ecological material for wall finishing. Comparison and performance evaluations were conducted, and the effects of hwang-toh finishing on a humid indoor environment were verified. Through this research, it was verified that a hwang-toh plaster finish is effective in maintaining the comfort of an indoor environment.

• The Journal of the Korea Contents Association
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• v.22 no.4
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• pp.509-518
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• 2022

The childcare scpace environment greatly affects the growth and development of infant and toddler. Building a comfortable space environment is considered a great social task. Through this study, the current guidelines can be expanded and supplemented by comparatively analyzing the childcare space environment of domestic and foreign guidelines. An integrated guideline with additional suggestions for universal design, scale, dimensions, environment, and finishing materials was derived.

• Proceedings of the Safety Management and Science Conference
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• 2000.05a
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• pp.217-224
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• 2000

건축물의 인조석 외장재를 생산하고 업체의 품질분석을 하기 위한 연구과제이다. 인조석은 자연석과 동일한 구성성분으로 거의 완벽한 자연석 그대로의 자연스러운 질감과 아름다움이 함께 하며 다양한 종류의 패턴과 세련된 색상 그리고 품위 있는 질감으로 최상급 건축마감재로 선택되어지고 있다. 하지만, 고유기술 및 관리기술의 미흡으로 제작과정 자체가 원시적이며, 제품의 신뢰성 자체를 객관적으로 보증 받을 수 있는 기준이 마련되어 있지 않다. 그리고 본사에서 생산하고 있는 외장재용 인조석은 KS규격도 전혀 이루어져 있지 않을 뿐만 아니라, 자체 시험 자료가 전혀 이루어져 있지 않는 관계로 새로운 로트를 장착했을 때 골재, 안료 및 혼화재 간의 배합비를 어떻게 구성하여야 할 것인가를 순수 기술자의 know-how에만 의존해야 하는 실정이다.

• Archives of design research
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• v.21
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• pp.185-194
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• 1997

Although the wall tile, which is the finishing material, has been used in many parts of the living space, there has been no attention to the process of research, production and marketing. Owing to the elevation of living tastes and the betterment of housing is causing a lot of interest and care about the finishing material in the inner part of housing, the interest on the wall tile has been remarkably increased. Even to the designers who are specializing in design, the wall tile industrial field has considered as only a ceramics, therefore it has not been indifferent to. With the background of the above, being conducted researches for causing interest and understanding in the wall tile industries with the various approach focusing on the importance of design, the desirable roles and direction of design in the \vall the tile field, this study shows the development and desirable future of the wall tile industries in our country.

• Journal of the Korea Institute of Building Construction
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• v.11 no.5
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• pp.435-441
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• 2011

The life cycle assessment on greenhouse gas emission of reinforced concrete buildings shows that more than 70 percent of greenhouse gas that is discharged by a building is discharged in the building maintenance stage, including cooling and heating. To reduce the greenhouse gas emission, maintenance planning to minimize the energy consumption is necessary in the design stage. In this paper, two heat storage rooms are tested to save the air cooling energy of the buildings. The specimens are essentially identical, except that chamber A contained paraffin sheets as the finishing material, while the other, chamber B, served as a control. The test results show that chamber A with the paraffin sheets exhibited less temperature change than chamber B without the sheets when temperature was increased outside of the specimens. The heating energy was probably consumed in the phase change of the paraffin sheets, which can be useful for reducing energy consumption related to air cooling during the summer.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.11a
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• pp.151-152
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• 2015

Concrete parking slab is often deteriorated severely after winter season because of concrete's freezing and thawing phenomenon. In this study, some methods to improve resistance against freezing-thawing is experimentally tested.: 1) concrete strength, 2) air content in concrete, 3) saw-cut effect and finish material. After experiment, in case of no finishes, 24MPa concrete with 4% air content is tested best result in terms of relative elastics modulus among testes ones. In case of concrete with finishes, all specimens are improved regardless of finishes compared to concrete with no finishes. Improvement degree compared to no finish is as follows : Polyurea > Resin-mortar > hardener and the number of improvement degree is 5, 4, 2% respectively. Further work is required considering construction site condition such as gaining water on surface and remicon in order to reflect site condition.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2010.05a
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• pp.67-70
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• 2010

This study investigates the physical properties of the acrylic emulsion mortar according to variable composition set of redispersible emulsion powders. This materials have to be composed of many types of binders and chemical additives. So it is difficult to decide suitable mixing proportion of composition materials. The redispersible emulsion powders using "2, 4, 6, 8kg" of EVA polymers dispersion ranges are prepared with acrylic emulsion mortars and were tested for basic characteristics such as flexural, and compressive strength, wheel load. Through experiments we found that the improved formula to satisfy the standard of wheel load by EVA polymers, and the masration rangs between about 2.0% to 2.6% which the white portland cenmet and EVA polymers is good for resistauce wheel load.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2007.11a
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• pp.129-132
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• 2007

From this research the construction civil official is simple with the parking floor finishing material, it improves the durability of the parking floor it uses the flexible FRP it will be able to secure the drainage quality it is excellent and it presents the efficient application plan from the construction site. The performance appraisal only efficiency with of result floor of parking area material bay it knows, the result where also the performance appraisal portion re-with roof bottom finishing is satisfied it showed. The flexible FRP it applies the material to the building as to diminish the damage of the bottom finishing material due to the deterioration and the conduct and the external force of the building it is exposed to the external environment, secures the quality of the material from the construction site and will contribute to the stability against the bottom finishing material.