针对目前混凝土疲劳损伤与寿命评估方法存在的耗费大、精度低等问题,迫切需要从宏观和细观相结合的角度,发展一种新型的混凝土疲劳损伤试验方法。系统阐述了基于压磁效应的铁磁性材料疲劳研究进展及基于压磁效应的磁性岩石力学研究进展。指出可将基于压磁效应的磁性材料力学与疲劳的研究方法引入到混凝土疲劳损伤与寿命预测领域。最后,提出了尝试进行人工合成的含磁铁矿粉混凝土压磁实验需要考虑的影响因素与关键问题,旨在探讨将压磁效应用于混凝土等非铁磁性材料疲劳实验及寿命预测研究的可能性,为将来进一步科学研究乃至应用于工程实践提供参考。
The existing methods of fatigue damage and life assessment for concrete are big-consuming and low precision.There is an urgent need to combine the macro perspective and meso perspective,to develop a new kind of test method for fatigue damage of concrete.The fatigue researches on ferromagnetic materials based on piezomagnetic effect,and the mechanics researches on magnetic rocks based on piezomagnetic effect are described.It is pointed out that the mechanics and fatigue research method on magnetic materials based on piezomagnetic effect can be introduced into the areas of fatigue damage and life prediction of concrete.Finally,the factors needed to be considered in order to carry out piezomagnetic experiment of concrete and some key issues are pointed out.It is aimed to investigate the possibility to utilize the piezomagnetic effect for fatigue tests and life prediction of concrete and other non-ferromagnetic mate-rials,and provide a reference for further scientific research and even for engineering practice in the future.