Actions for Microscopic Study of Surface Degradation of Glass Fiber-Reinforced Polymer Rods Embedded in Concrete Castings Subjected to Environmental Conditioning

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Microscopic Study of Surface Degradation of Glass Fiber-Reinforced Polymer Rods Embedded in Concrete Castings Subjected to Environmental Conditioning / LC. Bank, M. Puterman

Conference Author
High Temperature and Environmental Effects on Polymeric Composites: 2nd Volume (2nd : 1995 : Norfolk, Virginia)
Physical Description
1 online resource (15 pages) : illustrations, figures, tables
Additional Creators
Bank, LC., Puterman, M., American Society for Testing and Materials, and ASTM International
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Summary
The surface degradation of glass fiber-reinforced polymer (GFRP) pultruded rods when embedded in concrete castings and subjected to environmental conditioning is discussed in this paper. Investigation of the degradation of the GFRP rods was performed using optical microscopy and scanning electron microscopy (SEM). Unidirectionally reinforced pultruded rods (6.3- and 12.7-mm diameters) containing E-glass fibers in polyester and vinylester matrices were conditioned at standard laboratory conditions (21¿̐ưC, 65% relative humidity) or submerged in aqueous solutions (tap water) at 80¿̐ưC for durations of 14 and 84 days. Observations of the surfaces and cross-sections of the rods by optical microscopy and SEM revealed a variety of degradation phenomena. Embedded hygrothermally conditioned rods were found to have developed surface blisters of different sizes and depths. SEM studies of the surface revealed degradation of the polymer matrix material and exposure and degradation of the fibers close to the surface of the rods. The rods with the vinylester resin matrix showed less extensive degradation than those with the polyester resin matrix; however, the degradation characteristics of the two types of rods appear to be similar.
Dates of Publication and/or Sequential Designation
Volume 1997, Issue 1302 (January 1997)
Subject(s)
Other Subject(s)
ISBN
9780803153608 (e-ISBN)
9780803114913
0803124244
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 9.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1997. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
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