- Author
- Snyder, K. A.
- Title
- Discussion of Influence of Measurement Technique on the Air-Void Structure of Hardened Concrete.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- ACI Materials Journal, Vol. 93, No. 5, 512-514, September/October 1996
- Keywords
- concretes | air
- Identifiers
- specific surface area; air-void radii distribution; author's original data experessed as ratios
- Abstract
- The author proposes, and successfully demonstrates, that the results for air content and specific surface area (SSA). from an ASTM C 457 linear traverse performed on a thin section can differ from those performed on a polished plane section. The difference between thin section and plane surface air contents was quantified using a probability theory approach, and semiquantitative arguments were given to explain the difference for SSA results. However, the tabulated data suggest further study is needed. This discussion advances the authors work by addressing a minor error in the calculation, and by proposing an analytic approach for estimating the influence of measurement technique on the measured SSA value.