Materiales de Construcción, Vol 46, No 241 (1996)

Another look at the deterioration of calcium aluminate cement concrete

Jaromir Jambor , Slovakia

Jan Skalny , United States


Potential degradation of concrete structures made of calcium aluminate cement (CAC) is well known and is caused by transformation (conversion) of the thermodynamically metastable into stable calcium aluminate hydrate phases. This recrystallization is influenced by temperature and humidity; the structural degradation of the concrete itself thus its loss of strength, is strongly related to the pore structure of the hydrated cement paste, the critical parameters being the total volume of pores below 15-20 nm and the median micropore radius. This constitutes a novel procedure for evaluation of existing CAC concrete structure.


conversion; calcium aluminate cement; pore structure; properties

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Copyright (c) 1996 Consejo Superior de Investigaciones Científicas (CSIC)

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