Characterization of entrained air bubble systems in concretes by means of an image analysing microscope
✍ Scribed by S. Chatterji; H. Gudmundsson
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 480 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-8846
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✦ Synopsis
The standard microscopic technique for the characterization of an entrained air bubble system in a concrete is a time consuming process. In this paper a sample preparation technique has been described for the use of an automatic image analysing microscope in the characterization of the air bubble system in concretes. In this technique the sample preparation takes about lh hours and the measurement of the air bubble characteristics takes about half an hour. The results obtained by this technique are identical to those obtained by using the standard (Rosiwal) technique. It has also been found that the air content, measured by this automatic image analysing technique in hardened concretes follows very closely to that measured in fresh concretes.