Resistencia química del hormigón. XVII.- Acción de una disolución saturada de yeso: influencia de la adición de escoria a un cemento portland resistente al yeso. Evolución de las resistencias mecánicas a flexotracción y de los coeficientes de corrosión
In the present work, the second of the new series initiated with industrial Portland cement of high initial resistance, there is studied the influence exerted by the addition of distinct quantities of groundgranulated slag to industrial Portland cement resistant to sulfate (cement 2 < > P-450-Y) in its chemical-resistant behaviour to the action of dissolution saturated with gypsum determining the evolution of the resistance by the Koch-Steinegger method, as likewise the mechanical resistances and flexotracction of mortar test specimens (1:3) of 1 x 1 x 6 cm manufactured with said cement 2 and with the cement 2 mixtures slag = 85/15 - 65/35 - 40/60 and 30/70. in weight, sumerged in potable water filtering some series of 12 test specimens and in a dissolution saturated with gypsum other series analogous to the previous ones, for 56 - 90 -180 and 360 days, after curing them for 24 hours in a saturation of humidity to 20 ± 2ºC, and then, 21 days under filtered potable water. There has been made evident the favourable action which, from the mechanical-resistant point of view, is exerted by the addition of slag-in a special manner, of high quantities - to cement 2.
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