Fiber-optic refractive-index sensor for use in fresh concrete

Document Type

Article

Publication Date

1-1-1991

Abstract

We describe the development of a portable fiber-optic refractive-index sensor for detecting the air-bubble content in fresh concrete. The sensor uses a low-power visible laser diode as the light source. Data processing is performed in real time by a lap-top microcomputer. We introduce a new digital imageprocessing methodology for the interpretation of reflected-light intensity signals. Sensor performance is examined through laboratory and field studies on concrete poured at actual highway sites. © 1991 Optical Society of America.

Identifier

0001069873 (Scopus)

Publication Title

Applied Optics

External Full Text Location

https://doi.org/10.1364/AO.30.004056

e-ISSN

21553165

ISSN

1559128X

First Page

4056

Last Page

4059

Issue

28

Volume

30

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