Materiales de Construcción, Vol 58, No 292 (2008)

Effect of the activation of a clay-base paper industry by-product on cement matrix behaviour


https://doi.org/10.3989/mc.2008.40607

M. Frías
Instituto de Ciencias de la Construcción “Eduardo Torroja”, CSIC, Madrid, Spain

E. Sabador
Instituto de Ciencias de la Construcción “Eduardo Torroja”, CSIC, Madrid, Spain

S. Ferreiro
Instituto de Ciencias de la Construcción “Eduardo Torroja”, CSIC, Madrid, Spain

M. I. Sánchez de Rojas
Instituto de Ciencias de la Construcción “Eduardo Torroja”, CSIC, Madrid, Spain

R. García
Universidad Autónoma de Madrid, Madrid, Spain

R. Vigil
Universidad Autónoma de Madrid, Madrid, Spain

Abstract


The present study addresses variations in the calcination temperature (600-750 ºC) and kiln time (two to five hours) applied to activate coated paper waste and their effect on the rheological, physical and mechanical behaviour of cement matrices containing these active additions.

The results obtained showed that the conditions under which kaolinite was activated had a direct effect on the subsequent behaviour of the calcined products. At activating temperatures of over 700 ºC, pozzolanic activity and mechanical strength were observed to be lower, setting time shorter and the mortar less workable.

Keywords


paper industry waste; activation; properties; blended cements

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References


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