Embedded fiber optic sensors for bridge deck chloride penetration measurement

被引:29
作者
Fuhr, PL [1 ]
Huston, DR
MacCraith, B
机构
[1] Univ Vermont, Coll Engn, Burlington, VT 05405 USA
[2] Dublin City Univ, Dept Phys, Dublin 9, Ireland
关键词
chloride sensors; smart structures; fiber optic sensors;
D O I
10.1117/1.601958
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The use of chloride-based deicing agents to help clear U.S. highways of roadway hazards leads to associated chemical related problems. Fouling of local rivers and streams due to runoff of the waterborne chlorides is significant and has contributed to local ordinances that are attempting to force state agencies to reduce, if not eliminate, the use of these chlorides (typically at the cost of increased driving hazards). With respect to the corrosion aspects of chloride application, cracks that occur in the roadway/bridge pavement allow water to seep into the pavement carrying the chloride to the rebar with the resultant increase in corrosion. The costs of this corrosion are considerable and have led to the widespread use of chloride/water impermeable membranes on roadways and especially within bridges. Fiber optic sensors have repeatedly been shown to provide measurement capabilities of parameters within such reinforced concrete structures. Development of fiber optic chloride sensors capable of being embedded within a roadway or bridge deck is reported. (C) 1998 Society of Photo-Optical instrumentation Engineers.
引用
收藏
页码:1221 / 1228
页数:8
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