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  • 论文(10)

聚脲聚氨酯环氧涂料用於混凝土钢筋防腐蚀的研究

林薇薇

中国腐蚀与防护学报

聚脲聚氨酯环氧涂料用於混凝土钢筋防腐蚀的研究林薇薇(浙江大学高分子系杭州310027)钢筋混凝土建筑物耐久性下降的主要原因之一是增强钢筋的腐蚀。因为混凝土是多孔性凝胶体,空气中的氧、湿气和其它腐蚀介质能通过孔隙和细裂缝侵蚀钢筋,而钢筋变成铁锈时体积要增大2~4倍,结果产生内应力,使混凝土开裂,又进一...

关键词: null , Epoxy;Polyurea , Polyurethane , Concrete

混凝土硫酸杆菌腐蚀研究进展

唐咸燕

中国腐蚀与防护学报

对于市政排污管道而言,硫酸杆菌往往是造成其腐蚀的一个主要原因.本文总结了近年来混凝土硫酸杆菌腐蚀的研究进展.归纳认为针对混凝土硫酸杆菌腐蚀的研究大致可以分为两种实验研究方法:细菌模拟测试和现场暴露测试.同时还介绍了混凝土硫酸杆菌的腐蚀机理以及硫酸杆菌侵蚀与化学硫酸侵蚀的区别;总结了在评价混凝土抗硫酸...

关键词: 混凝土 , Concrete , Corrosion , Durability , Advances

Carbon-Coated-Nylon-Fiber-Reinforced Cement Composites as an Intrinsically Smart Concrete for Damage Assessment during Dynamic Loading

Zhenjun ZHOU , Zhiguo XIAO , Wei PAN , Zhipeng XIE , Xixian LUO , Lei JIN

材料科学技术(英文)

Concrete containing short carbon-coated-nylon fibers (0.4~2.0 vol. pct) exhibited quasi-ductile response by developing a large damage zone prior to fracture localization. In the damage zone, the material was microcracked but continued to local strain-harden. The carbon-coated-nylon-fiber-reinforced ...

关键词: Concrete , null , null , null

Experimental Study about Activated Water Generated by the Electro-hydraulic Impulse Strengthening the Mechanical Performance of Concrete

Shijin ZHANG , Zhenfang LIAO , Changlin YANG

材料科学技术(英文)

On the basis of a great number of experiments, it is proved that the strength of concrete is improved greatly when it is mixed with activated water produced by the electro-hydraulic impulse. With the proper parameters, the compression strength of concrete can be increased by 45%. The reason for impr...

关键词: Concrete , null , null

Self-adjustment of Carrying Capacity of Concrete Embedded with CFRC

Wu YAO

材料科学技术(英文)

By heating up the embedded carbon fiber reinforced cement based material (CFRC), the carrying capacity and deformation of concrete member could be adjusted. The relationship between temperature difference and expansion strain of CFRC was demonstrated, and the temperature-deformation-load effect of c...

关键词: Carbon fiber , null , null , null

Repair of Multi Cracks Concrete Sewers Systems

S.Kesteloot , C.Djelal , S.Baraka , I.Benslimane

材料科学技术(英文)

Man-entry sewers sustain many types of structural deterioration, and current repair techniques are very costly. Our objective was therefore to apply methods of localised strengthening by the adhesion of composite plates, as currently used in the construction and public works industry. To do so, it w...

关键词: Sewage systems , null , null