- Author
-
Stutzman, P. E.
- Title
- Characterization of Field Concrete.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NISTIR 4516
January 1991
34 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
concretes
|
characterization
|
evaluation
|
field surveys
|
field testing
|
laboratory analysis
|
microscopy
|
petrography
- Abstract
- Field inspection and laboratory analysis of concrete and concrete structures are necessary for condition evaluation, determination of the need and extent of repairs, and for the prediction of concrete service life. A detailed evaluation includes field inspection, field testing, sampling, and laboratory analyses and also involves the description of the structure, concrete, and aggregates. Field inspection for overall structure condition includes the identification and description of surface defects, cracks, and cracking patterns. Field testing determines relative concrete quality and location of degraded concrete, and provides guidance in developing a sampling plan. Laboratory analyses provide detailed information on the microstructure, phase composition, chemical composition, and strength of the concrete. This report discusses the inspection and evaluation of field concrete, the application of field tests for determining concrete condition, sampling concrete for analyses, and laboratory testing for the characterization and evaluation of concrete microstructure.