首页|长龄期混凝土材料损伤与静/动态力学特性劣化机理研究现状

长龄期混凝土材料损伤与静/动态力学特性劣化机理研究现状

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随服役年限的增长,混凝土耐久性不足的问题日趋突出,成为了工程失效的主要原因.总结了长龄期混凝土损伤机理及耐久性影响因素,包括碳化作用、冻融作用、多类型腐蚀介质作用以及多因素耦合作用;概括了耐久性影响因素对混凝土材料静/动态力学性能的劣化规律.最后展望了混凝土耐久性未来研究的侧重点,即加强现代混凝土劣化机理研究、加强原材料组成变化的混凝土耐久性研究,以及填补长龄期混凝土在中/高应变率荷载作用下的动态力学性能劣化机理研究.
Research status of material damage and deterioration mechanism of static/dynamic mechanical properties of long-age concrete
With the increase of service life,the problem of insufficient durability of concrete is becoming increasingly prominent,which has become the main reason for engineering failure.The influencing factors and mechanisms of concrete deterioration and damage are sum-marized,including carbonation,freeze-thaw,multi type corrosion medium and multi factor coupling.The deterioration law of durability factors on static and dynamic mechanical properties of concrete materials is summarized.Finally,it looks forward to the focus of future concrete durability research,which should strengthen the research on modern concrete deterioration mechanism,the research on concrete durability with changesin raw material composition,and the research on the mechanism of dynamic mechanical property deterioration of long-age concrete under intermediate and high strain rate loading.

long-age concretecarbonationfreeze-thawcorrosionmultifactor couplingmechanical propertystrain rate

李超、李干、岳松林、谭仪忠、李杰

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陆军工程大学爆炸冲击防灾减灾国家重点实验室,江苏南京 210007

长龄期混凝土 碳化作用 冻融作用 腐蚀 多因素耦合 力学性能 应变率

2024

混凝土
中国建筑东北设计研究院有限公司

混凝土

CSTPCD北大核心
影响因子:0.844
ISSN:1002-3550
年,卷(期):2024.(12)