ACID ATTACK ON HIGH-ALKALI CEMENT PASTE - ANOTHER CAUSE FOR DELAYED ETTRINGITE FORMATION

Authors
MACIAS A GONI S
Citation
A. Macias et S. Goni, ACID ATTACK ON HIGH-ALKALI CEMENT PASTE - ANOTHER CAUSE FOR DELAYED ETTRINGITE FORMATION, Journal of the American Ceramic Society, 81(11), 1998, pp. 2894-2900
Citations number
17
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
81
Issue
11
Year of publication
1998
Pages
2894 - 2900
Database
ISI
SICI code
0002-7820(1998)81:11<2894:AAOHCP>2.0.ZU;2-I
Abstract
Cement pastes were immersed in an acid solution of 0.87 M HAc/NaAc. (p H 4.5) and in distilled water for different periods of time up to 90 d ays. Changes in the solid phases were evaluated by scanning electron m icroscopy, X-ray microanalysis, and X-ray diffraction after the extrac tion of the specimens from the solutions. Results showed that acid att ack could lead to delayed ettringite formation.