• Title/Summary/Keyword: waterproof

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The Comparative Study on Attached Performance of the Rubber Asphalt Membrane-Sheet Composite Waterproof by Difference of the Specific Gravity of the Petroleum Resin (석유수지 비중차를 이용한 고무아스팔트 도막-시트 복합방수의 부착성능 비교 연구)

  • Yoon, Sung Hwan;Park, Wan Goo;Kim, Dong Bum;Park, Jin Sang;Oh, Sang Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.11a
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    • pp.130-131
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    • 2017
  • The combined waterproofing technique, which forms the waterproofing layer of two or more substances, is characterized by forming a waterproof layer, which is characterized by the formation of waterproof layers and the thickness of the waterproofing layer is inherently formed. In this study, it is intended to verify the integrity of the material through the manufacture of materials for special purpose waterproofing methods, primarily for the manufacture of composite waterproofing materials and composite waterproofing methods using cement materials and materials.

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A Study on the Flexural Rigidity Change according to Quantities Characteristics of Waterproof Admixture for Concrete (콘크리트용 수밀 혼화재 첨가량에 따른 휨 강도 변화추이 연구)

  • Choi, Su-Young;Park, Jin-Sang;Kim, Dong-Bum;Park, Wan-Goo;Kim, Byoung-Il;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.11a
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    • pp.128-129
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    • 2017
  • Concrete properties alone cannot provide satisfactory waterproof performance because concrete can generate cracks due to possible problems in design, construction and curing process, and various environmental factors. Therefore, concrete structures require installing waterproofing layers for concrete protection and various types of construction methods are currently being applied. The purpose of this study is to investigate the concrete strength changes when waterproofing admixtures are mixed into the concrete. The results of flexural strength testing confirmed that the initial strength of concrete specimens with the admixtures was lower than that of the concrete specimen without the admixture based on different curing periods.

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Water Vapour Transfer through Fabrics for Outdoor Activities (야외 운동복용 직물에서의 수분전달)

  • O, Ae Gyeong;Park, Jeong Wan
    • Textile Coloration and Finishing
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    • v.15 no.3
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    • pp.66-66
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    • 2003
  • 야외 운동(outdoor activities)복에 사용되는 소재들은 외부로부터 신체를 안전하게 보호해 주어야 될 뿐 아니라 쾌적하게 유지시켜 주어야 한다. 의복착용시 쾌적감에 결정적인 영향을 미치는 인자는 몸의 열적 평형상태를 유지하기 위한 수단인 수분전달 특성이다. 본 연구는 여러 종류의 야외 운동복용 직물에서의 수분전달 현상을 조사하여 규명하므로써 이 직물들이 실제 의복생활에 응용될 의복계 (clothing system)를 형성하였을 때의 수분전달 현상을 설명하고자 하는 기초연구이다. 연구의 결과는 base layer용, mid layer용 직물들이 shell layer로 쓰이는 waterproof breathable 직물보다 수분 전달률이 높았으며, waterproof breathable 직물의 수분 전달률은 microfibre 직물, PTFE-laminated 직물 그리고 polyurethane coated 직물 순 이었다. 또한 polyurethane 직물에서는 back coated 직물이 face-coated 직물보다 수분 전달률이 높았다.

Water Vapour Transfer through Fabrics for Outdoor Activities (야외 운동복용 직물에서의 수분전달)

  • Oh, Ae-gyeong;Park, Jung-whan
    • Textile Coloration and Finishing
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    • v.15 no.3
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    • pp.192-196
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    • 2003
  • 야외 운동(outdoor activities)복에 사용되는 소재들은 외부로부터 신체를 안전하게 보호해 주어야 될 뿐 아니라 쾌적하게 유지시켜 주어야 한다. 의복착용시 쾌적감에 결정적인 영향을 미치는 인자는 몸의 열적 평형상태를 유지하기 위한 수단인 수분전달 특성이다. 본 연구는 여러 종류의 야외 운동복용 직물에서의 수분전달 현상을 조사하여 규명하므로써 이 직물들이 실제 의복생활에 응용될 의복계(clothing system)를 형성하였을 때의 수분전달 현상을 설명하고자 하는 기초연구이다. 연구의 결과는 base layer용, mid layer용 직물들이 shell layer로 쓰이는 waterproof breathable 직물보다 수분 전달률이 높았으며, waterproof breathable 직물의 수분 전달률은 microfibre 직물, PTFE-laminated 직물 그리고 polyurethane coated 직물 순 이었다. 또한 polyurethane 직물에서는 back coated 직물이 face-coated 직물보다 수분 전달률이 높았다.

A Study on the Quality Control Plan for Waterproof Construction in Apartment Houses (공동주택 방수공사 품질관리 방안 마련에 관한 연구)

  • Kim, Kwang-Ki;Kim, Byoungil
    • Journal of the Korea Institute of Building Construction
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    • v.24 no.1
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    • pp.109-120
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    • 2024
  • For successful waterproofing construction, it is very important to secure construction quality as well as material performance of waterproofing materials used in construction. Due to the long-term cost reduction policy following the economic downturn in the construction market, most construction companies are using general low-priced waterproof materials rather than high-quality waterproof materials without clear quality control standards. Without clear education on construction, construction is being carried out with meaning only on construction activities. In addition, the waterproofing method applied in combination is a situation where water leakage occurs due to waterproofing failure due to insufficient construction quality because the construction method is complicated. Therefore, it is necessary to review the quality control measures(design, materials, construction) for successful waterproofing work and improve problems that are derived so that stable waterproofing work can be done. In order to expect the leakage prevention effect of a building, first, it is required to select appropriate materials for each part of the building and environment in the design stage, and the selected materials must satisfy all items of the Korean Industrial Standard(KS). Second, to secure the quality of waterproofing construction, sincere construction by workers is required. In this paper, we tried to describe "review of waterproof design", "constructor education", "site inspection", and "criticism(correction/supplementation)" as quality control measures after material selection.

Evaluation on the Material Properties of Waterproof Concrete with Self-healing Admixture (자가치유형 구체방수 콘크리트의 기초물성 평가)

  • Jeon, Hong-Mim;Lee, Jong-Yun;Hong, Seok-Beom;Kim, Jin-Keun;Lee, Yong-Jin
    • Proceedings of the Korea Concrete Institute Conference
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    • 2009.05a
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    • pp.415-416
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    • 2009
  • Concrete with Self-healing Admixture provides waterproof protection by using a organic-inorganic chemical compound throughout the concrete. Using cement chemicals eliminate the need to use additional waterproofing, If crack is occurred, this system enhance self-healing ability to increase the structural safety. In this study, we investigate material properties to conclude mixture rate of concrete to apply a construction site.

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Evaluation of Physical Performance of High-Strength.High Waterproof Ready-mixed Shotcrete using Powdered Polymer Dispersion (분말형 폴리머 혼화제를 적용한 고강도.고차수성 레디믹스트 숏크리트의 물리적 성능 평가)

  • Ma, Sang-Joon;Choi, Hee-Sup;Lee, Heung-Soo
    • Proceedings of the Korea Concrete Institute Conference
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    • 2008.11a
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    • pp.337-340
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    • 2008
  • As the Ready-mixed Shotcrete using Powdered Polymer Dispersion, Shotcrete Matrix as totally shotcrete gel that a part of second binder in Shotcrete materials is dense. Also, Ready-mixed Shotcrete is showed the decreasing Rebound and rising Durability. Therefore, it is possible that Ready-mixed Shotcrete for High-Strength and High-Waterproof can apply to the Powdered Polymer Dispersion.

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A Trend on Quality Transformation of Waterproof Agent and Admixture of Cement for Concrete Surface Treatment (콘크리트 표면처리용 시멘트 액체방수제의 품질동향)

  • 최은수;김영근;박헌일;정순자
    • Proceedings of the Korea Concrete Institute Conference
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    • 2003.11a
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    • pp.557-560
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    • 2003
  • This study deals with the method of test for waterproof agent and admixture of cement, and especially, the effect on bond strength between waterproofing layer and mortar or concrete substrate in building construction. Quality of that has been managed according to it of construction standard manual, housing construction manual, 건, and Q until performance of that is specified by law as KS F 4923. Therefore this study focus on the quality and trend for a fatty system and PCM(Polymer Cement Mortar)

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