SMART PEBBLES  : passive embeddable wireless sensors for chloride ingress monitoring in bridge decks.

Watters, D.G.; Bahr, A.J.; Jayaweera, P.; Huestis, D.L.

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SMART PEBBLES : passive embeddable wireless sensors for chloride ingress monitoring in bridge decks.

2003-06-01
By Watters, D.G. ; Bahr, A.J. ; Jayaweera, P.

File Language:

English

Details

Alternative Title:

Passive embeddable wireless sensors for chloride ingress monitoring in bridge deck.
Creators:

Watters, D.G. ; Bahr, A.J. ; Jayaweera, P. ; Huestis, D.L.
Corporate Creators:

SRI International
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/CA/TL-2003/07
Resource Type:

Tech Report
Geographical Coverage:

California
Corporate Publisher:

California. Department of Transportation
Abstract:

SRI International has developed a wireless sensor for monitoring the level of chloride ; ingress into concrete bridge decks. We call this device a Smart Pebble™ since it has ; roughly the size and weight of a typical piece of the rock aggregate that is used in such ; structures. It is “smart” in that it contains a chloride sensor and a radio-frequency ; identification (RFID) chip that can be queried remotely both to identify it and to ; indicate chloride concentration levels. The Smart Pebble™ is also powered remotely, ; thus precluding the need for any lifetime-limiting batteries. It is designed to be ; inserted in the bridge deck either during the initial construction (or during ; refurbishment) or in a back-filled core hole. The Pebble devices constructed can ; transpond sensor data through as much as 6 inches of concrete. We have developed ; stable reference electrodes in a laboratory environment, with 4000 hours of continuous ; measurement. Unfortunately, the resulting electrochemical cell in the Pebble device ; has limited stability over the intended design life.
Format:

PDF
Funding:

65A0083
Download URL:

https://rosap.ntl.bts.gov/view/dot/27682/dot_27682_DS1.pdf
File Type:

[PDF - 2.35 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:309bc81755ea41a701906dcad9bec3da6c84afaf93e9c88ff8b482a5714e664d

File Language:

English

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