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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
- 학술저널
- 저자정보
- 발행연도
- 2003.9
- 수록면
- 79 - 86 (8page)
이용수
초록· 키워드
오류제보하기
As a result of testing the material characteristics of cement-polymer modified waterproof coatings, the polymer (base resin) was found to be acrylic resin and poly vinyl acetate(PVAC) dispersion and the inorganic powder was composed of sand, Portland cement, and Alumina cement as well as the complementary functional additives such as antifoamer, fluiding agent, and anti-cracking agent.
For the waterproofing characteristics testing on items specified by KS F 4919, company D has shown unsatisfactory result for tensile strength, elongation and tear resistance requirements, but company A, B, and C have shown acceptable result for all quality standards.
The durability requirements for the waterproofing materials are as follows:
1) For the chisel impact resistance test, only company D has showed very poor result resulting in hole or complete intrusion.
2) For cracking resistance test, only company B and C has passed the test at the ambient temperature and for the temperature range between -10℃ and -20℃, all companies did not show acceptable cracking resistance.
3) All test materials were broken apart during low temperature flex-resistance and crack bridging tests.
4) Company B and C has passed the acid resistance test and company A and D exhibited the color change and decoloration.
5) For Alkali resistance and salt water resistance tests, there was no abnormality on the exterior and showed the similar result as in acid resistance tests.
6) For the water-vapor permeability test with the application thickness of 2mm, Sd value was found to be 5.0~6.8㎜ indicating low water-vapor permeability profile.
7) As the result of CO₂gas permeability resistance test, CO₂gas has been absorbed up to 5mm into the standard test material and when the waterproofing material is applied on the substrate, none of the test materials showed the sign of CO₂gas absorption.
As the result of testing the currently available commercial cement-polymer modified waterproof coatings, all items satisfied the impact resistance, CO₂gas permeability resistance and other test categories specified by KS standard except company D. However, all companies has failed to meet the cracking resistance, low-temp flex. resistance, crack bridging, and water-vapor permeability requirements. Therefore, it is considerably important to develop new products with proper durability and revise the relevant requirements of KS standards.
For the waterproofing characteristics testing on items specified by KS F 4919, company D has shown unsatisfactory result for tensile strength, elongation and tear resistance requirements, but company A, B, and C have shown acceptable result for all quality standards.
The durability requirements for the waterproofing materials are as follows:
1) For the chisel impact resistance test, only company D has showed very poor result resulting in hole or complete intrusion.
2) For cracking resistance test, only company B and C has passed the test at the ambient temperature and for the temperature range between -10℃ and -20℃, all companies did not show acceptable cracking resistance.
3) All test materials were broken apart during low temperature flex-resistance and crack bridging tests.
4) Company B and C has passed the acid resistance test and company A and D exhibited the color change and decoloration.
5) For Alkali resistance and salt water resistance tests, there was no abnormality on the exterior and showed the similar result as in acid resistance tests.
6) For the water-vapor permeability test with the application thickness of 2mm, Sd value was found to be 5.0~6.8㎜ indicating low water-vapor permeability profile.
7) As the result of CO₂gas permeability resistance test, CO₂gas has been absorbed up to 5mm into the standard test material and when the waterproofing material is applied on the substrate, none of the test materials showed the sign of CO₂gas absorption.
As the result of testing the currently available commercial cement-polymer modified waterproof coatings, all items satisfied the impact resistance, CO₂gas permeability resistance and other test categories specified by KS standard except company D. However, all companies has failed to meet the cracking resistance, low-temp flex. resistance, crack bridging, and water-vapor permeability requirements. Therefore, it is considerably important to develop new products with proper durability and revise the relevant requirements of KS standards.
목차
Abstract
1. 서론
2. 실험계획 및 사용재료
3. 시험체 제작 및 실험개요
4. 실험 결과 및 분석
5. 결론
참고문헌
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