MATERIALS DESIGN OF CFGFRP-REINFORCED CONCRETES WITH DIAGNOSING FUNCTION FOR PREVENTING FATAL FRACTURE

被引：22

作者：

MUTO, N

YANAGIDA, H

NAKATSUJI, T

SUGITA, M

OHTSUKA, Y

ARAI, Y

SAITO, C

机构：

[1] UNIV TOKYO,FAC ENGN,BUNKYO KU,TOKYO 113,JAPAN

[2] UNIV TOKYO,ENVIRONM SCI RES CTR,BUNKYO KU,TOKYO 113,JAPAN

[3] SHIMIZU CORP,DIV TECHNOL,MINATO KU,TOKYO 10507,JAPAN

来源：

ADVANCED COMPOSITE MATERIALS | 1995年 / 4卷 / 04期

关键词：

CFGFRP COMPOSITES; ELECTRICAL RESISTANCE; MECHANICAL DAMAGE; CONCRETES; DIAGNOSING FUNCTION; FATAL FRACTURE;

D O I：

10.1163/156855195X00168

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

When concretes reinforced by CFGFRP (carbon fiber-glass fiber reinforced plastics) composites containing three types of carbon fiber bundles with different ultimate elongation values are subject to two-point loading tests, the electrical resistance increases linearly with the increase of load, strain and deflection of CFGFRP-reinforced concretes during loading and unloading but when the maximum value of the previous load is exceeded, the increase of electrical resistance becomes non-linear. This behavior is an effective way of knowing the magnitude of the maximum load during loading and unloading. The change in electrical resistance of CFGFRP reinforced concretes during loading increases largely when the carbon fiber bundle is fractured and is maintained thereafter against the increase of external load due to the presence of glass fibers. This behavior can also be used to prevent fatal fracture. Change in electrical resistance can supply better information for damage in concrete structures than strain or deflection. Information on the location of damage can be obtained by comparing the change in electrical resistance of the reinforcing composite al different locations. Concretes using CFGFRP composites as reinforcements are a promising material possessing diagnostic abilities to detect potential damage and to prevent fatal failure.

引用

页码：297 / 308

页数：12

共 6 条

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[2]

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[3]

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[4]

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[6]

YANAGIDA H, 1992, J JSCM, V18, P144

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