• Title/Summary/Keyword: waterproofing material

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Study on the Application of Site for Exposure Type of Complex Waterproofing Method with Liquefied Waterproof using of Vertical Type Reinforcing Sheet Material Reinforced Sheet Rising System in the Roof Tops (돌기 시스템을 이용한 입체보강형시트의 옥상노출복합방수공법 적용에 관한 재료 및 공법적 연구)

  • Oh, Sang-Keun;Son, Mum-Se;Kim, Jin-Seong;Yeo, In-Soo
    • Journal of the Korea Institute of Building Construction
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    • v.6 no.4 s.22
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    • pp.69-75
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    • 2006
  • It often happen water leakage that roof membrane have a poor condition such as direct exposed to rain, ultraviolet lays, temperature change compare with other part of waterproofing. There are difficult to maintain the quality of waterproofing and durability due to use only few waterproofing materials in practical in spite of development and use the various waterproofing material as solution of these poor condition. Therefore, in this thesis, I would like to know the property to apply field and suggest other method to develop for this waterproofing method to adopt various field condition for roof tops, as searching exposed and complex waterproofing technology for roof tops which is reinforced sheet using rising system have a regular pitch, depth, space.

An Experimental Study on the Roofing Waterproofing Method Combined Soft and Hard Rapid Hardening Membrane (연질 및 경질 초속경도막방수재를 복합화한 옥상노출방수공법에 관한 실험적 연구(균열 대응성))

  • Choi, Eun-Gyu;Seo, Hyun-Jae;Lee, Jung-Hun;Lee, Sun-Gyu;Song, Je-Young;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.177-178
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    • 2018
  • In the case of conventional ultra-fast hardness membrane waterproofing material (polyurea, etc.), damage such as breakage or tearing occurred frequently at the time of cracking of the surface after waterproofing. In this study, it is suggested that a waterproof layer can not cope with the occurrence of cracks at the same time by applying the soft type waterproofing material of soft type at the lower part of the construction method (securing of elongation) To minimize the possibility of water resistance.

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An Analysis of External Waterproofing Materials and Construction Technology Status on Single Side Wall in Underground Structures (지하구조물 합벽구간 적용 외방수 재료 및 시공기술 현황 분석)

  • Kim, Meong-Ji;Kim, Soo-Yeon;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.11a
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    • pp.222-223
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    • 2019
  • Waterproofing techniques used in underground structures do not reflect material and construction environments, but rely only on material properties, which inevitably lead to their limits in durable life. In particular, the government intends to investigate the current underground water treatment method and analyze the problems in order to prevent serious corrosion and aging of structures caused by underground water leaks and poor construction.

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Waterproofing Material Evaluation Method based on Stress Dispersion Analysis due to Displacement in Railway Bridges (철도교량에 거동발생 시 응력분포 분석에 따른 적정 방수재료 선정을 위한 평가 방법)

  • Oh, Kyu-Hwan;An, Ki-Won;Kim, Soo-Yeon;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.59-60
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    • 2021
  • To measure the effect of the stress-strain dispersion across the installed waterproofing layer on the concrete surface, a strain gauge was attached to the gap between the waterproofing layer and the concrete structure at specified points of upper, center and bottom of the load-displacement simulation specimen, and the peak stress-strain at the displacement interface were measured and compared with stress-strain at other areas to analyze each material types' stress-strain dispersion ratio properties. Based on the results of the testing, it was shown that materials with high load-displacement resistance performance accordingly had high stress-strain dispersion ratio results, and the materials from highest performance to lowest performance were; CAS, SAS, PUC and CSC.

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Tensile Adhesive Characteristics of Waterproofing System for Concrete Bridge Decks (바닥판 조건에 따른 교면방수 시스템의 인장접착 특성)

  • 이병덕;박성기;심재원;정해문;김광우
    • Proceedings of the Korea Concrete Institute Conference
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    • 2002.05a
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    • pp.373-378
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    • 2002
  • The waterproofing system's performance is known to show a determining by complex interaction of material factors, design details, and the qualify of construction, and the waterproofing integrity of waterproofing membranes is determined by the bond to the deck and the amount of damage to the waterproofing membrane. In this research, the basic properties of waterproofing membranes on market and the tensile adhesive characteristics of waterproofing systems of concrete bridge deck have also been investigated in the view of the damages frequently reported from job site. As a results of tensile adhesive strength of waterproofing system, tensile strength is decrease with surface moisture contents except for inorganic-elastomeric liquid waterproofing membrane, and increase with strength of deck slab. Also tensile adhesive strength is generally increase in case of moisture curing of specimen because of pore structure and surface leveling. The after asphalt concrete paving tends to increase more than before those. The results of the liquid waterproofing membranes are upside-down, and the more concrete has strength, the more strength of tensile adhesive increase. The ambient temperature and the rolling temperature of asphalt concrete when application of the waterproofing membrane has considerable influence on the performance of waterproofing system.

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The Effects of Temperature Conditions on the Tensile Adhesive Characteristic of the Bridge Decks Waterproofing Systems (온도조건이 교면방수시스템의 인장접착특성에 미치는 영향)

  • 이병덕;박성기;김도형;옥창권
    • Proceedings of the Korea Concrete Institute Conference
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    • 2003.05a
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    • pp.293-298
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    • 2003
  • In this study, tensile adhesive strength(TAS) test was carreid out for evaluated the effects of temperature conditions(-20, -10, 5, 20, 30, $40^{\circ}C$) on the tensile adhesive characteristics about six waterproofing membranes which were commercially used in bridge decks. And, failure appeariences of waterproofing systems in each temperature were investigated and observed the sawing surfaces of waterproofing systems for whether or not damaged of waterproofing membranes. TAS test results were increased when test temperature was decrease in all waterproofing membrane. The type of failure was ductile in $30^{\circ}C$ and $40^{\circ}C$, but brittle failure below $20^{\circ}C$. This results were shown that if temperature above $30^{\circ}C$ is continued for a long time, waterproofing material will be damaged by softening and a part of membranes were damaged by hot aggregate in SMA. So we will consider the type of asphalt for choice of the waterproofing membranes.

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A Study on Development Type Bentonite Mate Waterproofing Materials under the Influence of Salt Water (개량형 벤토나이트 매트 방수재의 염수 영향에 관한 연구)

  • Kim Yung-Buok;Kim Su-Ryon;Kwak Kyu-Sung;Oh Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • v.y2004m10
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    • pp.45-49
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    • 2004
  • A general bentonite mate waterproofing material applied salt pollution without particular way(it is a land reclaimed from a sea(or near by sea). Analysis showed that it(general bentonite mate) has a little resistant salt pollution and a little watertightness. There are a lot of problem before completed structure because of salt pollution. So that, they have to a sum of money to repair works. Also, to repaired a part leak water again and again. because it doesn't match for salt pollution. So, I am going to study about a bentonite mate waterproofing material in salt pollution and it will be within the range of possibility to underground structure under the salt pollution. Also, I suggest waterproofing method in salt pollution about workability, stability, economy and etc.

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Dissolution Resistance Property of Modified Asphalt Waterproofing Sheet Coated with Polyamide Film by SEM-EDX Analysis (폴리아마이드 필름이 코팅된 개량 아스팔트 방수시트의 SEM-EDX 분석을 통한 유기용제 저항성 확인)

  • An, Ki-Won;Yoo, Jae-Yong;Oh, Sang-Keun
    • Journal of the Korea Institute of Building Construction
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    • v.17 no.5
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    • pp.437-444
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    • 2017
  • In the composite waterproofing method in which a polyurethane coating waterproofing material is applied on the modified asphalt waterproofing sheet, the organic solvent is diluted in the coating waterproofing material in order to improve the workability. However, since the organic solvent is not volatilized before the curing of the polyurethane coating waterproofing material, the organic solvent causes dissolution of asphalt layer, thereby causing oil leakage. As a result, a polyamide film having a high dissolution resistance property was laminated on modified asphalt sheet, and through testing the dissolution resistance was visually confirmed and quantitative analysis of the polyamide film by SEM-EDX analysis was also used to confirmed the dissolution resistance of the polyamide film.

A Study on the Analysis of 3 Dimensional Substrate Behaviour of Complex Environmental Deterioration and the Analysis of Results (방수재료 및 공법의 내구성 평가를 위한 복합열화분석용 3차원 거동대응 시험결과)

  • Song, Je-Young;Seo, Hyun-Jae;Choi, Eun-Kyu;Lee, Jung-Hun;Kim, Byoungil;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.189-190
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    • 2018
  • KS standards mostly relate to single component material evaluation, so in cases of underground structure environments, most cannot predict the existing composite forms of deterioration, resulting in the applied waterproofing materials becoming unable to respond to these damaging factors. Current domestic waterproofing market in Korea mainly uses single-ply waterproofing materials comprised of coatings or waterproof sheets and two or more-ply composite waterproofing methods. In order to evaluate these types of composite waterproofing systems, a new test equipment and method that incorporates various deterioration conditions (joint displacement, chemical exposure, water pressure etc) was developed. In a comparison testing, the results showed that flexible type materials have higher response performance towards joint displacement than the hardened material.

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A Study on the Selection of Waterproofing Construction Firms using Fuzzy-AHP Model (퍼지 계층분석 모형을 이용한 최적 방수 시공업체 선정에 관한 연구)

  • Shin, Jin-Hak;Lee, Sun-Gyu;Song, Je-Young;Oh, Sang-Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.11-14
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    • 2012
  • The category for waterproofing is one of construction process most affected by falling-off in price competitiveness, construction quality, and material performance. Therefore, in order to select of waterproofing construction firms, it is necessary to consider Incorporating both price competitiveness and construction quality. In this article, I would like to analyze 10 Factors for Selecting using fuzzy-AHP model, including the survey of the waterproofing experts. This fuzzy-AHP model can be shown to calculate the fuzzy trigonometrical function to reflect weights for preference of 10 factors for the waterproofing construction firms. It was found from the result that waterproofing construction firms was searched order of priority for select by fuzzy-AHP model.

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