AGGREGATE EXPANSIVITY DUE TO SULFIDE OXIDATION - II - PHYSICOCHEMICALMODELING OF SULFATE ATTACK

Authors
CASANOVA I AGUADO A AGULLO L
Citation
I. Casanova et al., AGGREGATE EXPANSIVITY DUE TO SULFIDE OXIDATION - II - PHYSICOCHEMICALMODELING OF SULFATE ATTACK, Cement and concrete research, 27(11), 1997, pp. 1627-1632
Citations number
11
Journal title
Cement and concrete research → ACNP
ISSN journal
00088846
Volume
27
Issue
11
Year of publication
1997
Pages
1627 - 1632
Database
ISI
SICI code
0008-8846(1997)27:11<1627:AEDTSO>2.0.ZU;2-A
Abstract
Weathering of sulfide-bearing aggregates in concrete causes the releas e of sulfate ions that can react with cement components to yield expan sive products. The extent of the sulfate attack of the paste is contro lled by the composition and size of the aggregate, the kinetics of sul fide oxidation, the composition of cement and mix proportioning of con crete. The extent of sulfate attack has been successfully simulated us ing a combined kinetic-thermodynamic approach. (C) 1997 Elsevier Scien ce Ltd.