CAJ | 학술논문

以人工海水为侵蚀介质,采用加速腐蚀试验,对设计强度等级为C35的混凝土试件进行了0、10、20、30、40、50、60次干湿循环试验,检测了海水侵蚀作用对混凝土抗压强度、抗拉强度、弹性模量及应力-应变关系的影响.试验结果表明,混凝土随着干湿循环次数的增多,其表观质量和力学性能均呈现出不同程度的下降趋势.建立了混凝土随侵蚀循环次数变化的抗压强度折减模型、抗拉强度折减模型和弹性模量的折减模型,为进一步开展混凝土结构在侵蚀离子作用下的力学性能劣化机理与计算模型的研究提供了依据.
이인공해수위침식개질,채용가속부식시험,대설계강도등급위C35적혼응토시건진행료0、10、20、30、40、50、60차간습순배시험,검측료해수침식작용대혼응토항압강도、항랍강도、탄성모량급응력-응변관계적영향.시험결과표명,혼응토수착간습순배차수적증다,기표관질량화역학성능균정현출불동정도적하강추세.건립료혼응토수침식순배차수변화적항압강도절감모형、항랍강도절감모형화탄성모량적절감모형,위진일보개전혼응토결구재침식리자작용하적역학성능열화궤리여계산모형적연구제공료의거.
Taken artificial seawater as aggressive medium, by accelerated corrosion test method, dry-wet test with 0, 10, 20, 30, 40, 50 and 60 cycles were carried out on concrete specimens whose design strength grade is C35. The influence of seawater corrosion on compressive strength, tensile strength, elastic modulus and stress-strain relationship of concrete was tested. The experimental results show that the apparent quality and the mechanical property decline to different extents with the increase of dry-wet cycles. Finally, the compressive strength reduction model, the tensile strength reduction model and the elastic modulus reduction model with the change of corrosion cycles were established. The result can offer a reference for further research on deterioration mechanism of mechanical property and calculation model of reinforced concrete structures in multiple actions of seawater corrosion.