EFFECT OF SHORT-TERM FREEZE-THAW CYCLING ON COMPOSITE CONFINED CONCRETE

被引：60

作者：

Karbhari, V. M. ^{[1
]}

Rivera, J. ^{[1
]}

Dutta, P. K. ^{[2
]}

机构：

[1] Univ Calif San Diego, Div Struct Engrg, La Jolla, CA 92093 USA

[2] USA, Cold Reg Res & Engn Lab, Hanover, NH 03755 USA

来源：

JOURNAL OF COMPOSITES FOR CONSTRUCTION | 2000年 / 4卷 / 04期

关键词：

Carbon fiber reinforced plastics - Compressive strength - Concrete construction - Failure analysis - Freezing - Glass fiber reinforced plastics - Stiffness - Structural analysis - Thawing;

D O I：

10.1061/(ASCE)1090-0268(2000)4:4(191)

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Concrete cylinders jacketed with glass and carbon-fiber-reinforced polymer (FRP) composites were exposed to 201 freeze-thaw cycles, and results of compression response were compared with results from similar specimens kept at 22.5 degrees C. Beyond the effect on the concrete itself, freeze-thaw exposure has a significant effect on the composite in terms of both performance and failure modes. Wrapped specimens tested after exposure to freeze-thaw cycling show changes in strength and stiffness and more catastrophic failure modes than similar specimens kept at 22.5 degrees C. Effects of the exposure on the FRP composite and its constituents, as well as interaction effects resulting from FRP composite-concrete bond are elucidated and failure mechanisms are detailed. It is shown that the damage mechanisms seen are those that would increase absorption of water in cases where aqueous solutions may be present. Implications on overall use are discussed.

引用

页码：191 / 197

页数：7

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