Materiales de Construcción, Vol 40, No 219 (1990)

Durabilidad del hormigón: Acción de disoluciones de sulfato de calcio y de sulfato de magnesio sobre un cemento Portland de alta resistencia inicial. Influencia de la adición de escorias y de cenizas volantes


https://doi.org/10.3989/mc.1990.v40.i219.771

José Luis Sagrera-Moreno
ICCET/CSIC, Spain

Victoriano González-Vila
Cementos del Atlántico, S.A. Sevilla, Spain

Manuel Aguanell-García
Cementos Valderrivas, S.A. Madrid, Spain

Demetrio Gaspar-Tebar
ICCET/CSIC, Spain

Abstract


This article —included on a long time ICCET Investigation Program— studies the mechanical resistances variation, to flexure, of the 1 X 1 X 6 cm mortar samples (1:3) made with high initial resistance cement and with several slags addition (cement/slag = 85/15 - 65/35 - 40/60 and 30/70) with high furnace slag and a fly ash (with selected characteristies) when they were submited after the cured period (1 day at 100% R.H. and 21 days inside filtered potable water) to the action of the gypsum saturated solution, four magnesium sulphate solutions with the next concentrations (3.22 - 32.20 - 128.80 and 515.20 g/l of MgS044.7H20), gypsum saturated solution with 3.22 g/l MgS04.7H20 a gypsum saturated solution with 32.20 g/l MgSO4. 7H2O and, moreover, filtered potable water, during 56-90-180- 360 - 540 - 720 - 900 and 1080 days. The results obtained have produced a clasification accord to the mechanical behaviour to flexure of the cement n. ° 1 and the mixed cement n.° 1/slag and cement n.° 1/fly ash, front to the agressive solutions mentioned.

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