港口工程混凝土材料与耐久性研究  

Study on Concrete Materials and Durability in Port Engineering

作　　者：周秀彩 丁国莹[2] 张朝利 ZHOU Xiu-cai;DING Guo-ying;ZHANG Chao-li(Jiangsu Water Conservancy Engineering Technology Consulting Co.,Ltd.,Nanjing 210004,China;Jiangsu Water Conservancy Surveying and Designing Institute Co.,Ltd.,Yangzhou 225000,China;Jiangsu Huaiyuan Engineering Construction Supervision Co.,Ltd.,Nanjing 210004,China)

机构地区：[1]江苏省水利工程科技咨询股份有限公司,江苏南京210004 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225000 [3]江苏淮源工程建设监理有限公司,江苏南京210004

出　　处：《精细化工中间体》2024年第2期63-68,共6页Fine Chemical Intermediates

摘　　要：探讨了自密实混凝土(SCC)在港口工程中的应用潜力,特别是其在不易人工振捣区域的材料和结构耐久性。研究采用了一系列实验测试,包括抗压强度、抗折强度、化学耐久性测试(如硫酸盐侵蚀和氯离子渗透测试),以及微观结构分析(扫描电子显微镜和X射线衍射)。此外,通过环境模拟测试和时间序列分析进一步评估了SCC在不同环境条件下的性能变化。结果表明,相比传统混凝土C20和C30,SCC化学耐久性测试显示了更低的侵蚀率,证明了其在抵抗化学侵蚀方面的优势。微观结构分析揭示了SCC的紧密和均匀的微观结构,有利于提高其抗裂性和耐久性。在环境模拟测试中,SCC在不同温度条件下表现出较高的性能稳定性,特别是在长期性能保持方面的表现显著优于C20和C30,SCC的优越性能使其成为提高港口工程结构可靠性和减少维护成本的理想材料选择。This research was focused on the application potential of Self-Compacting Concrete(SCC)in port engineering,especially regarding its material and structural durability in areas difficult for manual compaction.A suite of experimental tests was employed,including assessments of compressive strength,flexural strength,chemical durability(such as sulfate erosion and chloride ion penetration),as well as microstructural analysis using Scanning Electron Microscopy and X-Ray Diffraction.Additionally,the performance of SCC under various environmental conditions was further evaluated through environmental simulation tests and time-series analysis.The results indicated that SCC demonstrated a lower erosion rate in chemical durability tests compared to traditional concrete grades C20 and C30,highlighting its superior resistance to chemical attacks.Microstructural analysis uncovered SCC´s dense and uniform microstructure,enhancing its crack resistance and durability.In environmental simulation tests,SCC exhibited higher performance stability across different temperature conditions,particularly excelling in long-term performance maintenance compared to C20 and C30.The superior performance of SCC positions made it as an ideal material for enhancing the reliability and reducing maintenance costs of hydraulic engineering structures.

关 键 词：自密实混凝土(SCC) 港口工程 材料耐久性 化学耐久性测试 环境模拟测试 

分 类 号：TQ914[化学工程]