지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 임남기
- 발행연도
- 2019
- 저작권
- 동명대학교 논문은 저작권에 의해 보호받습니다.
이용수1
이 논문의 연구 히스토리 (6)
2018
우레탄 고무계 2류 도막 방수재의 화학적 침식환경에서의 장기열화에 따른 인장성능 변화 연구
주희정
,
오상근
,
박진상
외 3명
대한건축학회 학술발표대회 논문집
2018.10
학술대회자료
아스팔트 고무계 도막 방수재의 온도 침식환경에서의 장기열화에 따른 인장강도 변화 연구
주희정
,
오상근
,
박진상
외 3명
대한건축학회 학술발표대회 논문집
2018.10
학술대회자료
아크릴고무계 도막 방수재의 화학 침식환경에서의 장기열화에 따른 인장성능 변화 연구
주희정
,
오상근
,
박진상
외 3명
대한건축학회 학술발표대회 논문집
2018.04
학술대회자료
노출형 우레탄 도막 방수재의 온도 침식환경에서의 장기열화에 따른 성능변화 연구 : 인장강도 중심으로
주희정
,
오상근
,
박진상
외 3명
대한건축학회 학술발표대회 논문집
2018.04
학술대회자료
회귀 분석을 통한 폴리우레탄 도막방수재의 장기 화학 열화조건에 따른 인장성능 변화 지표
주희정
,
임남기
한국건축시공학회지
2018.01
학술저널
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
국내의 대부분의 도막방수재 적용시 한국산업표준(KS)에서 정한 품질기준을 만족하더라도 장기적으로 고품질의 내구성을 확보하기 어려운 현실이다. 이는 방수공사의 하자발생이 시공 후 1년～3년 이내에 가장 많이 발생하는 것에서 반증될 수 있다. 따라서 도막방수재 적용 시 하자 발생을 저하시키기 위해서는 사용할 재료가 처한 시공환경에서의 열화 조건을 분석하고, 해당 열화 조건에서의 성능 변화 현상을 파악하여, 방수시공 전 혹은 시공 중에 나타나는 환경조건의 변화에 대응하여 성능 변화를예측할 수 있는 방법의 제시와 이 방법을 활용한 대표적인 방수재 품질확보 방안이 절실히 필요하다.
또한 국내에서는 다양한 종류의 도막방수재가 사용되고 있으나 이들은 각각의 한국산업표준(KS)에 의해 품질이 관리되고는 있지만 일반적 기후 조건 하의 공통적 열화 조건에서 상호 비교된 사례가 없이 각각의 시방과 재료 특성에만 의존하여 사용됨으로서 하자 발생 시 구체적 개선방안도 마련되어 있지 못한 실정이다.
그리고 다양한 도막방수재료가 현장에 적용되기 위해서는 각각의 한 한국산업표준(KS)의 열화조건 시험 기준에 합격하여야 하나 현재의 KS에는 온도 조건이 단순히 ?20℃ 또는 60℃로 설정되어 있어 현실적으로 어느 온도 영역에서 성능이 변화하는 지에 대해 명확히 알 수 없는 상황이다.
이에 본 연구에서는 현재 국내 시공현장에서 일반적으로 적용되고 있는 도막방수재 6종을 대상으로 12개월간 열화 요인(온도변화 : ?20℃,60℃를 동절기, 춘주절기, 하절기로 구분함, 화학적 침식 환경 : 알칼리처리, 염산처리, 질산처리, 황산처리, 염화나트륨처리) 작용 시 재료적 측면에서의 성능변화 특성을 1개월 단위로 인장강도 및 신장률에 대하여 평가하였다. 여기서 6개 재료에 대해 각각에 대해 열화 조건별 성능 변화특성을 분석하였고, 도출된 데이터를 활용하여 6개 도막방수재의 성능 변화를 상대 비교하였으며, 이들 데이터에 대해 회귀분석기법을 적용하여 열화 조건별 성능 추정식(예측식)을 제시함으로서 도막방수재의 성능 예측이 가능하도록 데이터베이스를 구축하였으며, 그 결과는 다음과 같다.
(1) 열화 환경 조건
열화요인별 온도조건은 기상청의 최근 5년간 기상데이터를 분석하여 한국산업규격(KS)에서 규정하고 있는 온도 조건인 ?20℃, 60℃범위 내에서 동절기, 춘추절기, 하절기로 구분하고 이를 5℃ 단위로 나누어 열화환경을 조성하여 시험체를 노출시켰다. 화학처리 조건은 방수관련 한국산업표준(KS) 중 가장 일반적으로 사용되는 염산, 질산, 황산, 알칼리, 염화나트륨의 5가지로 KS F4935 규격을 준용하였다.
(2) 도막방수재별 물성 변화 분석
도막재별 인장강도의 경우 동절기, 춘추절기, 하절기의 온도영역에서 다양한 강도 특성을 나타내는 것으로 확인하였다. 특히 하절기 고온영역의 경우, 대부분의 도막재의 성능이 큰 폭으로 저하되어 성능기준에 미치지 못하는 것으로 확인되었다. 특히, 고무아스팔트의 경우는 대부분의 온도조건에서 인장성능 기준치 이하로 저하되어 품질확보가 어려운 것으로 확인되었다. 신장률은 인장강도와 유사한 성능 그래프를 나타내는 도막재가 대부분으로 나타났으나, 반면에 규칙성을 확인할 수 없는 결과도 확인 할 수 있었다. 적정 성능 확보 여부와 관계없이 모든 도막재가 열화기간이 장기화될수록 성능이 점차적으로 저하되는 양상이 나타났다. 화학열화조건의 경우, 각 도막재별 화학환경에 따라 다양한 성능 특성을 나타냈으며, 특정 화학물질에 노출될 경우, 성능이 저하되는 양상을 확인할 수 있었다. 다만, 전반적으로 산 환경에서 성능이 대부분 저하되는 양상을 나타냈으며, 알칼리 및 염화나트륨 환경에서 저항성이 강한 것으로 확인할 수 있었다.
(3) 도막방수재별 물성 변화 상대 비교 분석
상기 성능평가 데이터를 바탕으로 재료별 열화조건에 따른 인장성능변화를 분석한 결과 장기 온도열화처리 시 타 도막방수재 대비 아크릴계 및 고무아스팔트계 도막방수재의 인장강도 변화가 큰 것으로 확인되었으며, 신장률의 경우. 아크릴계 및 고무아스팔트계 도막방수재의 신장률 변화가 큰 것으로 확인되었다. 반면, 폴리우레아 도막방수재의 경우 신장률 변화가 적은 것으로 확인되었다. 장기 화학열화처리의 경우, 아크릴계 및 고무아스팔트계 도막방수재의 인장강도 변화가 큰 것으로 확인되었으며, 신장률의 경우는 아크릴계 및 고무아스팔트계, 시멘트혼입폴리머계 도막방수재의 신장률 변화가 큰 것으로 확인되었고, 폴리우레아 도막방수재의 경우 신장률 변화가 적은 것으로 확인되었다.
(4) 도막방수재의 열화 조건별 성능 변화 추정식 제시
평가를 통해 온도 및 화학적 침식조건에서의 성능변화 결과 값을 바탕으로 선형 회귀분석을 진행한 결과, 각각의 회귀분석에 대한 결정계수 R값이 대부분 약 0.8 이상을 만족하고, 분산분석표에서 F통계량의 유의확률 p-값 과 t통계량의 유의확률이 0.05 대비 매우 작으므로 각 열화조건별 성능값의 변화를 설명하는 것이 적합하다고 판단하였으며. 이를 종합하여 다음과 같은 결론을 얻었다.
1) 연구 대상 6종의 도막재에 대한 열화처리 조건 및 그에 따른 물성변화 측정치에 대한 상관관계를 분석한 결과, 열화조건 및 열화기간, 도막재 종류별 상관관계가 성립됨에 따라 회귀분석을 수행하여 성능변화 추정식을 제시하였다.
2) 각각의 도막방수재별 성능 변화 추정식(회귀방정식)을 도출하였으며, 총 6개 도막재에 대하여 인장강도 및 신장률 22개식, 합계 264개를 제시하였다.
본 연구는 향후 연구 대상 도막재가 적용되는 현장 환경의 분석을 통해 도막재 적용 후 재령 따라 성능변화를 예측할 수 있게 함으로써 시공 과정에서의 재로적 품질 확보 방안을 제시한 것이다. 이에 향후 방수시공 전 혹은 시공과정에서 기후 변화 등에 따른 품질저하가 에상될 때 본 연구에서 제시한 물성 변화 추정식을 활용함으로서 적정한 재료 사용을 확인하기 위한 기초적 연구이다. 이에 본 연구에서 제시한 회귀방정식은 특정 온도 및 화학적 침식조건에서 도막재의 성능 변화 정도를 예측하는데 활용 가능할 것으로 판단된다.
When the majority of domestic waterproof membrane coatings are applied, even if they satisfy quality standards set by the Korean Industrial Standards (KS), the reality is that it is difficult to secure a high degree of durability in the long term. This can be seen from the fact that defects in waterproofing construction mostly occur one to three years after construction. Therefore, in order to reduce the occurrence of defects when applying waterproof membrane coatings, there is a desperate need for a method of predicting changes in performance by analyzing deterioration conditions in the construction environment in which the materials are used, identifying performance changes in such conditions, and responding to the change in the environmental conditions before or during waterproofing construction, and for a way to assure the quality of representative waterproof membrane coatings using the method.
Moreover, although various kinds of waterproof membrane coatings are used domestically, and their levels of quality are managed by the Korean Industrial Standards (KS) respectively, there is no concrete improvement method to prevent defects, as the materials are only used with reference to each specification and material characteristics without any mutual comparison case, in terms of common deterioration conditions under the general climate conditions, being made.
Also, various waterproof membrane coatings are required to pass their own deterioration condition test by the Korean Industrial Standards (KS) for being applied to use in the field. However, the current KS criterion is simply ?20℃ or 60℃, which is somewhat unclear in terms of the temperature range in which their performance changes.
Therefore, in this study, we evaluated tensile strength and elongation rates on a monthly basis to verify characteristics of changes in performance from a material perspective in the deterioration conditions (temperature change: subdividing ?20℃ and 60℃ into winter, spring/fall, and summer; chemical erosion environment: alkali treatment, hydrochloric acid treatment, nitric acid treatment, sulfuric acid treatment, sodium chloride treatment) for 12 months, targeting six waterproof membrane coatings that are generally applied in the current domestic construction industry. Then we analyzed performance change characteristics of each deterioration condition per material, made a relative comparison among the six waterproof membrane coatings using the output data, and applied a regression analysis technique to the data to propose a performance estimation (prediction) equation for each waterproof membrane coating, so as to establish a database to predict their performances. The results are as follows:
(1) Deterioration environmental conditions
As for the temperature conditions of each deterioration factor, we analyzed meteorological data from the Korea Meteorological Administration for the past five years, classified it into winter, spring/fall, and summer, then into units of 5℃ in the range of ?20℃ and 60℃, the temperature range set by the Korean Industrial Standards (KS), to create the deterioration environment and expose test subjects to it. The chemical treatment included five conditions of hydrochloric acid, nitric acid, sulfuric acid, alkali, and sodium chloride, which are generally used among the waterproofing related Korean Industrial Standards (KS), following the KS F4935 standard.
(2) Physical property change analysis of each waterproof membrane coating
When it comes to tensile strength conferred by waterproof membrane coating, it was confirmed that there were various strength characteristics in the winter, spring/fall, and summer temperature ranges. In particular, the performance of most coating materials was degraded in the high temperature range in summer, failing to meet the requirements of the performance standard. In the case of rubber asphalt, it was difficult to secure quality as its tensile performance was below standard in most temperature conditions. The elongation rate of most coating materials showed a similar performance graph as the tensile strength, but some results did not show any regularity. Regardless of whether or not proper performance was achieved, performance deteriorated gradually in all coating materials as the degradation period was prolonged. In the case of chemical deterioration conditions, various performance characteristics were revealed, depending on the chemical environment of each coating material, and it was verified that performance was deteriorated when exposed to specific chemical materials. However, performance was largely degraded in the acid environment, and resistance was strong in the alkali and sodium chloride environments.
(3) Relative comparison analysis of physical property changes of each waterproof membrane coating
As a result of analyzing tensile performance changes following deterioration conditions of each material, based on the performance evaluation data above, the tensile strength of acryl and rubber asphalt type waterproof membrane coatings changed more than that of other waterproof materials in the long-term temperature deterioration treatment, and so did the elongation rate of acryl and rubber asphalt types. In the meantime, a polyurea waterproof membrane coating showed less change in the elongation rate. In the long-term chemical deterioration treatment, it was confirmed that the tensile strength of acryl and rubber asphalt materials changed more, while the elongation rate change of acryl, rubber asphalt, and cement-mixed polymer was high, and that of polyurea was low.
(4) Proposal of performance change estimation equation by waterproof membrane coating in each deterioration condition
As a result of carrying out linear regression analysis based on performance change results in the temperature and chemical erosion conditions through evaluation, we determined that it is appropriate to explain performance value changes per deterioration condition, as the coefficient of determination R value of each regression analysis was mostly over 0.8, and the significance probability p-value of F statistics and that of t statistics were very low, as compared to 0.05 in the dispersion analysis table, and thus we came to the following conclusion.
1) After analyzing the correlation between the deterioration treatment conditions of the six research subject coating materials and the their physical property changes, we confirmed correlations among the deterioration conditions, degradation period, and coating material type, and thus suggested a performance change estimation equation by performing regression analysis.
2) We developed a performance change estimation equation(regression equation) by material, and suggested 22 equations for tensile strength and elongation rate of total six coating materials respectively, making the total 264.
This study suggests the method of securing material quality in the construction process by enabling estimation of performance change following material age after applying coating material through the analysis of the field environment to which research subject materials are applied in the future. Therefore, it is basic research that can be used to check the use of proper materials by utilizing the proposed physical property change estimation equation when quality degradation is expected, due to changes, including meteorological changes, before or during waterproofing construction in the future. Accordingly, we judge that the regression equation suggested in this study can be used to predict the degree of performance change of waterproof membrane coatings in the specific temperature and chemical erosion conditions.
또한 국내에서는 다양한 종류의 도막방수재가 사용되고 있으나 이들은 각각의 한국산업표준(KS)에 의해 품질이 관리되고는 있지만 일반적 기후 조건 하의 공통적 열화 조건에서 상호 비교된 사례가 없이 각각의 시방과 재료 특성에만 의존하여 사용됨으로서 하자 발생 시 구체적 개선방안도 마련되어 있지 못한 실정이다.
그리고 다양한 도막방수재료가 현장에 적용되기 위해서는 각각의 한 한국산업표준(KS)의 열화조건 시험 기준에 합격하여야 하나 현재의 KS에는 온도 조건이 단순히 ?20℃ 또는 60℃로 설정되어 있어 현실적으로 어느 온도 영역에서 성능이 변화하는 지에 대해 명확히 알 수 없는 상황이다.
이에 본 연구에서는 현재 국내 시공현장에서 일반적으로 적용되고 있는 도막방수재 6종을 대상으로 12개월간 열화 요인(온도변화 : ?20℃,60℃를 동절기, 춘주절기, 하절기로 구분함, 화학적 침식 환경 : 알칼리처리, 염산처리, 질산처리, 황산처리, 염화나트륨처리) 작용 시 재료적 측면에서의 성능변화 특성을 1개월 단위로 인장강도 및 신장률에 대하여 평가하였다. 여기서 6개 재료에 대해 각각에 대해 열화 조건별 성능 변화특성을 분석하였고, 도출된 데이터를 활용하여 6개 도막방수재의 성능 변화를 상대 비교하였으며, 이들 데이터에 대해 회귀분석기법을 적용하여 열화 조건별 성능 추정식(예측식)을 제시함으로서 도막방수재의 성능 예측이 가능하도록 데이터베이스를 구축하였으며, 그 결과는 다음과 같다.
(1) 열화 환경 조건
열화요인별 온도조건은 기상청의 최근 5년간 기상데이터를 분석하여 한국산업규격(KS)에서 규정하고 있는 온도 조건인 ?20℃, 60℃범위 내에서 동절기, 춘추절기, 하절기로 구분하고 이를 5℃ 단위로 나누어 열화환경을 조성하여 시험체를 노출시켰다. 화학처리 조건은 방수관련 한국산업표준(KS) 중 가장 일반적으로 사용되는 염산, 질산, 황산, 알칼리, 염화나트륨의 5가지로 KS F4935 규격을 준용하였다.
(2) 도막방수재별 물성 변화 분석
도막재별 인장강도의 경우 동절기, 춘추절기, 하절기의 온도영역에서 다양한 강도 특성을 나타내는 것으로 확인하였다. 특히 하절기 고온영역의 경우, 대부분의 도막재의 성능이 큰 폭으로 저하되어 성능기준에 미치지 못하는 것으로 확인되었다. 특히, 고무아스팔트의 경우는 대부분의 온도조건에서 인장성능 기준치 이하로 저하되어 품질확보가 어려운 것으로 확인되었다. 신장률은 인장강도와 유사한 성능 그래프를 나타내는 도막재가 대부분으로 나타났으나, 반면에 규칙성을 확인할 수 없는 결과도 확인 할 수 있었다. 적정 성능 확보 여부와 관계없이 모든 도막재가 열화기간이 장기화될수록 성능이 점차적으로 저하되는 양상이 나타났다. 화학열화조건의 경우, 각 도막재별 화학환경에 따라 다양한 성능 특성을 나타냈으며, 특정 화학물질에 노출될 경우, 성능이 저하되는 양상을 확인할 수 있었다. 다만, 전반적으로 산 환경에서 성능이 대부분 저하되는 양상을 나타냈으며, 알칼리 및 염화나트륨 환경에서 저항성이 강한 것으로 확인할 수 있었다.
(3) 도막방수재별 물성 변화 상대 비교 분석
상기 성능평가 데이터를 바탕으로 재료별 열화조건에 따른 인장성능변화를 분석한 결과 장기 온도열화처리 시 타 도막방수재 대비 아크릴계 및 고무아스팔트계 도막방수재의 인장강도 변화가 큰 것으로 확인되었으며, 신장률의 경우. 아크릴계 및 고무아스팔트계 도막방수재의 신장률 변화가 큰 것으로 확인되었다. 반면, 폴리우레아 도막방수재의 경우 신장률 변화가 적은 것으로 확인되었다. 장기 화학열화처리의 경우, 아크릴계 및 고무아스팔트계 도막방수재의 인장강도 변화가 큰 것으로 확인되었으며, 신장률의 경우는 아크릴계 및 고무아스팔트계, 시멘트혼입폴리머계 도막방수재의 신장률 변화가 큰 것으로 확인되었고, 폴리우레아 도막방수재의 경우 신장률 변화가 적은 것으로 확인되었다.
(4) 도막방수재의 열화 조건별 성능 변화 추정식 제시
평가를 통해 온도 및 화학적 침식조건에서의 성능변화 결과 값을 바탕으로 선형 회귀분석을 진행한 결과, 각각의 회귀분석에 대한 결정계수 R값이 대부분 약 0.8 이상을 만족하고, 분산분석표에서 F통계량의 유의확률 p-값 과 t통계량의 유의확률이 0.05 대비 매우 작으므로 각 열화조건별 성능값의 변화를 설명하는 것이 적합하다고 판단하였으며. 이를 종합하여 다음과 같은 결론을 얻었다.
1) 연구 대상 6종의 도막재에 대한 열화처리 조건 및 그에 따른 물성변화 측정치에 대한 상관관계를 분석한 결과, 열화조건 및 열화기간, 도막재 종류별 상관관계가 성립됨에 따라 회귀분석을 수행하여 성능변화 추정식을 제시하였다.
2) 각각의 도막방수재별 성능 변화 추정식(회귀방정식)을 도출하였으며, 총 6개 도막재에 대하여 인장강도 및 신장률 22개식, 합계 264개를 제시하였다.
본 연구는 향후 연구 대상 도막재가 적용되는 현장 환경의 분석을 통해 도막재 적용 후 재령 따라 성능변화를 예측할 수 있게 함으로써 시공 과정에서의 재로적 품질 확보 방안을 제시한 것이다. 이에 향후 방수시공 전 혹은 시공과정에서 기후 변화 등에 따른 품질저하가 에상될 때 본 연구에서 제시한 물성 변화 추정식을 활용함으로서 적정한 재료 사용을 확인하기 위한 기초적 연구이다. 이에 본 연구에서 제시한 회귀방정식은 특정 온도 및 화학적 침식조건에서 도막재의 성능 변화 정도를 예측하는데 활용 가능할 것으로 판단된다.
When the majority of domestic waterproof membrane coatings are applied, even if they satisfy quality standards set by the Korean Industrial Standards (KS), the reality is that it is difficult to secure a high degree of durability in the long term. This can be seen from the fact that defects in waterproofing construction mostly occur one to three years after construction. Therefore, in order to reduce the occurrence of defects when applying waterproof membrane coatings, there is a desperate need for a method of predicting changes in performance by analyzing deterioration conditions in the construction environment in which the materials are used, identifying performance changes in such conditions, and responding to the change in the environmental conditions before or during waterproofing construction, and for a way to assure the quality of representative waterproof membrane coatings using the method.
Moreover, although various kinds of waterproof membrane coatings are used domestically, and their levels of quality are managed by the Korean Industrial Standards (KS) respectively, there is no concrete improvement method to prevent defects, as the materials are only used with reference to each specification and material characteristics without any mutual comparison case, in terms of common deterioration conditions under the general climate conditions, being made.
Also, various waterproof membrane coatings are required to pass their own deterioration condition test by the Korean Industrial Standards (KS) for being applied to use in the field. However, the current KS criterion is simply ?20℃ or 60℃, which is somewhat unclear in terms of the temperature range in which their performance changes.
Therefore, in this study, we evaluated tensile strength and elongation rates on a monthly basis to verify characteristics of changes in performance from a material perspective in the deterioration conditions (temperature change: subdividing ?20℃ and 60℃ into winter, spring/fall, and summer; chemical erosion environment: alkali treatment, hydrochloric acid treatment, nitric acid treatment, sulfuric acid treatment, sodium chloride treatment) for 12 months, targeting six waterproof membrane coatings that are generally applied in the current domestic construction industry. Then we analyzed performance change characteristics of each deterioration condition per material, made a relative comparison among the six waterproof membrane coatings using the output data, and applied a regression analysis technique to the data to propose a performance estimation (prediction) equation for each waterproof membrane coating, so as to establish a database to predict their performances. The results are as follows:
(1) Deterioration environmental conditions
As for the temperature conditions of each deterioration factor, we analyzed meteorological data from the Korea Meteorological Administration for the past five years, classified it into winter, spring/fall, and summer, then into units of 5℃ in the range of ?20℃ and 60℃, the temperature range set by the Korean Industrial Standards (KS), to create the deterioration environment and expose test subjects to it. The chemical treatment included five conditions of hydrochloric acid, nitric acid, sulfuric acid, alkali, and sodium chloride, which are generally used among the waterproofing related Korean Industrial Standards (KS), following the KS F4935 standard.
(2) Physical property change analysis of each waterproof membrane coating
When it comes to tensile strength conferred by waterproof membrane coating, it was confirmed that there were various strength characteristics in the winter, spring/fall, and summer temperature ranges. In particular, the performance of most coating materials was degraded in the high temperature range in summer, failing to meet the requirements of the performance standard. In the case of rubber asphalt, it was difficult to secure quality as its tensile performance was below standard in most temperature conditions. The elongation rate of most coating materials showed a similar performance graph as the tensile strength, but some results did not show any regularity. Regardless of whether or not proper performance was achieved, performance deteriorated gradually in all coating materials as the degradation period was prolonged. In the case of chemical deterioration conditions, various performance characteristics were revealed, depending on the chemical environment of each coating material, and it was verified that performance was deteriorated when exposed to specific chemical materials. However, performance was largely degraded in the acid environment, and resistance was strong in the alkali and sodium chloride environments.
(3) Relative comparison analysis of physical property changes of each waterproof membrane coating
As a result of analyzing tensile performance changes following deterioration conditions of each material, based on the performance evaluation data above, the tensile strength of acryl and rubber asphalt type waterproof membrane coatings changed more than that of other waterproof materials in the long-term temperature deterioration treatment, and so did the elongation rate of acryl and rubber asphalt types. In the meantime, a polyurea waterproof membrane coating showed less change in the elongation rate. In the long-term chemical deterioration treatment, it was confirmed that the tensile strength of acryl and rubber asphalt materials changed more, while the elongation rate change of acryl, rubber asphalt, and cement-mixed polymer was high, and that of polyurea was low.
(4) Proposal of performance change estimation equation by waterproof membrane coating in each deterioration condition
As a result of carrying out linear regression analysis based on performance change results in the temperature and chemical erosion conditions through evaluation, we determined that it is appropriate to explain performance value changes per deterioration condition, as the coefficient of determination R value of each regression analysis was mostly over 0.8, and the significance probability p-value of F statistics and that of t statistics were very low, as compared to 0.05 in the dispersion analysis table, and thus we came to the following conclusion.
1) After analyzing the correlation between the deterioration treatment conditions of the six research subject coating materials and the their physical property changes, we confirmed correlations among the deterioration conditions, degradation period, and coating material type, and thus suggested a performance change estimation equation by performing regression analysis.
2) We developed a performance change estimation equation(regression equation) by material, and suggested 22 equations for tensile strength and elongation rate of total six coating materials respectively, making the total 264.
This study suggests the method of securing material quality in the construction process by enabling estimation of performance change following material age after applying coating material through the analysis of the field environment to which research subject materials are applied in the future. Therefore, it is basic research that can be used to check the use of proper materials by utilizing the proposed physical property change estimation equation when quality degradation is expected, due to changes, including meteorological changes, before or during waterproofing construction in the future. Accordingly, we judge that the regression equation suggested in this study can be used to predict the degree of performance change of waterproof membrane coatings in the specific temperature and chemical erosion conditions.
목차
Ⅰ. 서 론 ················································································································11.1 연구의 배경 및 목적 ·················································································11.2 연구의 범위 및 방법 ·················································································31.3 선행 연구 동향···························································································7Ⅱ. 이론적 고찰 ·······································································································102.1 도막방수재의 종류 및 특성···································································102.1.1 도막방수재의 재료별 분류······························································102.2 도막방수재의 하자요인 및 유형 ···························································232.2.1 하자요인 ······························································································232.2.2 온도에 따른 하자유형······································································242.2.3 화학적 침식에 따른 하자유형 ························································302.2.4 그밖에 하자유형················································································322.3 회귀분석 ·····································································································352.3.1 단순회기분석 ····················································································352.3.2 회귀분석의 검증 방법 ··································································372.3.3 회귀분석의 적합도 측정································································41Ⅲ. 열화에 따른 도막방수재의 성능 변화 특성 분석············································433.1 개요·············································································································433.2 연구대상 도막방수재 선정 ·····································································433.3 실험계획 및 방법·····················································································453.3.1 실험계획······························································································453.3.2 실험방법 ······························································································503.4 실험결과 ·····································································································533.4.1 우레탄 고무계 1류 실험결과··························································533.4.2 우레탄 고무계 2류 실험결과··························································593.4.3 아크릴계 실험결과 ············································································653.4.4 고무아스팔트계 실험결과 ································································713.4.5 시멘트혼입폴리머계 실험결과························································773.4.6 폴리우레아계 실험결과····································································833.5 결과분석 ·····································································································893.5.1 각 도막재 온도조건별 열화처리 기간에 따른 성능저하 특성 분석 893.5.2 각 도막재 화학조건별 열화처리 기간에 따른 성능저하 특성 분석 953.5.3 재료별 열화조건에 따른 인장성능 변화율 분석 ························983.5.4 각 도막재 온도조건별 성능저하율 비교분석(12개월 기준) ·· 1023.5.5 각 도막재 화학조건별 성능저하율 비교분석(12개월 기준) ·· 1053.6 소결···········································································································110Ⅳ. 열화 조건에 따른 도막방수재의 성능 변화 추정식 분석 ··················1114.1 회귀분석 계획 ·························································································1114.2 재료별 회귀 분석 결과 및 고찰 ·························································1114.2.1 우레탄 고무계 1류 인장강도 ························································1114.2.2 우레탄 고무계 1류 신장률 ····························································1174.2.3 우레탄 고무계 2류 인장강도 ·························································1234.2.4 우레탄 고무계 2류 신장률 ···························································1294.2.5 아크릴 고무계 인장강도 ······························································1354.2.6 아크릴 고무계 신장률 ··································································1414.2.7 고무 아스팔트계 인장강도 ···························································1474.2.8 고무 아스팔트계 신장률 ······························································1534.2.9 시멘트혼입폴리머계 인장강도 ························································1594.2.10 시멘트혼입폴리머계 신장률 ························································1654.2.11 폴리우레아계 인장강도 ······························································1714.2.12 폴리우레아계 신장률 ··································································1774.3 재료별 열화환경에서의 성능예측 회귀 방정식 ·······························1834.4 실제 적용 사례 분석 ·············································································189Ⅵ. 결 론 ················································································································193참고문헌····················································································································197ABSTRACT ·············································································································201감사의 글··················································································································205
최근 본 자료
댓글(0)
0