Comparative and semi-quantitative XRD analysis of Friedel’s salt originating from pozzolan and Portland cement
► Pozzolanic activity of pozzolans in sodium chloride solution. ► Friedel’s salt originated from two origins: Al 2 O 3 r - of pozzolans and C 3A of PC. ► Formation rate of Friedel’s salt from Al 2 O 3 r - is notably higher than for C 3A origin. ► Friedel’s salt amount formed in PC blends is direct p...
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| Veröffentlicht in: | Construction & building materials 2011-05, Vol.25 (5), p.2370-2380 |
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| Hauptverfasser: | , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
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| Zusammenfassung: | ► Pozzolanic activity of pozzolans in sodium chloride solution. ► Friedel’s salt originated from two origins:
Al
2
O
3
r
-
of pozzolans and C
3A of PC. ► Formation rate of Friedel’s salt from
Al
2
O
3
r
-
is notably higher than for C
3A origin. ► Friedel’s salt amount formed in PC blends is direct proportional to the
Al
2
O
3
r
-
content of their pozzolan.
The Friedel’s salt (
Fs) is often formed when reinforced concrete is attacked by chlorides from marine environmental and/or thaw salts. In this investigation, a semi-quantitative analysis and study of the
Fs (2
θ range
=
11.16–11.34°) in the solid phase of the Frattini test was made by XRD analysis. For this purpose, two Portland cements (PC) P1 (14% C
3A) and PY6 ( |
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| ISSN: | 0950-0618 1879-0526 |
| DOI: | 10.1016/j.conbuildmat.2010.11.037 |