Staff Members - Benha University
“Preconditioning In Situ Concrete for Permeation Testing”, 5th International Colloquium on Concrete in Developing Countries, Cairo, January 1994, pp. 1168-1180
5th International Colloquium on Concrete in Developing Countries • 1994
Publication Information
Authors
Shaaban, I. G., Elsayad, H. I.
Keywords
Vacuum technique; preconditioning; CAT; Figg air; ISAT, permeation indices
Journal
5th International Colloquium on Concrete in Developing Countries
Publisher
Egyptian Society of Engineers
Volume
January 1994
Issue
Not Available
Pages
pp. 1168-1180
publication.type
Local
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
This paper investigates the application of a vacuum techinque for preconditioning concrete in situ prior to permeation tests. Cover concrete absorption test (CAT) and Figg Air permeation index test (API) were applied after vacuum drying of concrete. the application of Vacuum using ISAT cap did not lead to satisfactory of the results with these tests. However, direct application of vacuum to CAT and API heads prior to testing resulted in improvement of reproducibilty of the permeation indices obtained from these tests.