Opc Cement

Crment

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Rewarch,

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27. No 0

9. pp

1343%1.155. Scwnce rIghti 517 00 + All

1997 Ltd 00

Pergamon PI1 SOOOS-8846(97)00136-l

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EFFECT OF stage set TEMPERATURE IN SOME HYDRATION CHARACTERISTICS OF CALCIUM ALUMINATE CEMENT COMPARED WITH THOSE OF PORTLAND CEMENT

P. GarcCs,“’ E. G” Alcocel,“’ S. Chinchbn,“’ C. G” Andreu,“’ and J. Alcaidet2’ “‘Dpto. Ing. de la Construction. 0. Pt’iblicas e Infr. Urb. Univ. Alicante. Apdo. Correos 99. 03080-Alicante. Spain. “‘Dpto. Construcciones Arquitectonicas. Univ. Alicante. Spain. (Refereed) 31. 1997: in final radiation diagram July 25, 1997)

(Received ABSTRACT

January

In the present paper the hydration of 1:3 atomic number 20 Aluminate Cement (CAC) and Portland Cement (PC) mortars at temperatures of 5”C, 30°C and 60°C return been studied. An evaluation of the compressive and flexural strengths obtained from different curing conditions is made. The evolution of phases presented was also studied from XRD spectra. The relationship between the set of ultrasonic propagation velocity. UPV.



(Yl-axis) and compressive strengths (Y-?-axis) versus w/c ratios for CAC mortars, cured at 5°C. 20°C and 60°C respectively. have also been obtained, at a curing age of 28 days. The great similarity of curves enables us to establish the hypothesis that it is potential to use a non destructive test as an data-based determination of compressive strength for CAC mortars with the same proportions of aggregates/ cements/water as those utilize in the test. Abrams rule was applied in differentiate to full point the reality of this model in the CAC mortars studied. The percentage of variability of the uncertain response (Rc). obtained in our regression models is highly satisfactory. 0 1997 ElseYer Scierwe Ltd

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