Title:
Simplified Method for the Determination of
Apparent Surface Area of Concrete Products
Author(s):
L. F. Gleysteen and G. L. Kalousek
Publication:
Journal Proceedings
Volume:
51
Issue:
1
Appears on pages(s):
437-446
Keywords:
no keywords
DOI:
10.14359/11687
Date:
1/1/1955
Abstract:
The hypothesis that the cementitious solid of autoclaved concrete products is crystalline and that of moist-air or atmospheric-steam cured units is gel-like in form served as the basis for this study. Estimate of degree of crystallinity was based on surface areas computed from BET nitrogen adsorption data. The results contradicted the hypothesis, the autoclaved products manifesting surface areas nearly twice as large as those of normally cured products. Water adsorption data obtained by a simple gravimetric adsorption method developed in this study indicated apparent areas of about equal magnitude for both types of curing, but these computed areas were much larger than those shown by nitrogen adsorption.