硅酸盐通报2025，Vol.44Issue(7)：2429-2436,8.DOI:10.16552/j.cnki.issn1001-1625.2024.1414
海水干湿循环作用下铁铝酸盐水泥混凝土的力学性能和微观性能研究
Mechanical and Microscopic Properties of Ferroaluminate Cement Concrete under Action of Seawater Dry-Wet Cycle
摘要
Abstract
With the development of marine infrastructure construction in recent years,the durability requirements of cement-based materials in marine environments have been increasingly raised.Ferroaluminate cement is the"third-generation cement"in China,which has excellent performance of resistance to seawater erosion.The purpose of this study was to explore the mechanical properties and microstructural changes of ferroaluminate cement concrete(FACC)and ordinary Portland cement concrete(OPCC)under the seawater dry-wet cycle,with particular attention to the influence of water-to-cement ratio on the properties.The physical and mechanical properties such as mass loss rate,relative dynamic elastic modulus and cube compressive strength of FACC and OPCC were compared and analyzed by experiments,and the microstructure was analyzed by scanning electron microscope and mercury intrusion method.The results show that during the seawater dry-wet cycle,FACC has a lower mass loss rate,and the relative dynamic elastic modulus of FACC increases at the beginning of the seawater dry-wet cycle and then tends to be stable,while relative dynamic elastic modulus of OPCC shows a significant decrease in the later stage of the seawater dry-wet cycle.In terms of compressive strength,FACC increases after seawater dry-wet cycle,while OPCC decreases.Overall,FACC demonstrates superior durability and stronger resistance to seawater erosion compared to OPCC.Microscopic analysis reveals that FACC has lower porosity and finer pore structure,which contributes to improve its durability.关键词
铁铝酸盐水泥/海水干湿循环/质量损失率/相对弹性模量/抗压强度/微观性能Key words
ferroaluminate cement/seawater dry-wet cycle/mass loss rate/relative elastic modulus/compressive strength/microscopic property分类
建筑与水利引用本文复制引用
张普,齐冬有,王小可,陈鹤元,何昌毓,张巍,谢亚斌,张冬..海水干湿循环作用下铁铝酸盐水泥混凝土的力学性能和微观性能研究[J].硅酸盐通报,2025,44(7):2429-2436,8.基金项目
国家重大科技专项(202203001) （202203001）
国家自然科学基金-河南省联合基金项目(U1904177) （U1904177）
河南省自然科学优秀青年基金(212300410079) （212300410079）
河南省公路工程局横向项目(20230352A) （20230352A）
