인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
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.
초록·키워드
Abstract The deterioration of concrete structures in cold marine environments presents a significant durability challenge, particularly due to the synergistic effects of chloride attack and freeze–thaw cycles. However, this problem has not been solved satisfactorily. This study explores an innovative strategy for improving concrete durability via the development of a nano- and polymer-modified cementitious coating system. The research team formulated a composite coating by incorporating precisely controlled concentrations (0.5–1.5 wt%) of nano-SiO 2 or nano-CaCO 3 with waterborne polyacrylate emulsion. Comprehensive experimental investigations were conducted on coated concrete specimens, including mass loss analysis, relative dynamic modulus of elasticity evaluation and Coulomb electric flux test during freeze–thaw cycles, and long-term salt solution immersion. The results demonstrate that the coating system exhibits a dual protective mechanism, effectively mitigating freeze–thaw induced damage while significantly enhancing the chloride resistance of concrete before and after freeze–thaw cycles. Microstructural analysis reveals that the synergistic combination of nanomaterials and polymer optimizes the pore structure of the coating, reducing total porosity and decreasing harmful and more harmful pore volume. Among the tested coating formulations, the 1.0 wt% nano-SiO 2 composite demonstrates superior performance, showing 68% improvement in chloride resistance and 2.27 times in ultimate freeze–thaw cycles compared to uncoated concrete.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
