Asian Journal of Materials Science1996-3394xxxx-xxxxAsian Network for Scientific Information10.3923/ajmskr.2016.11.16MadivateC. ManhiqueA. FilimoneH. VieiraM. 1201681As part of the increasing efforts to promote recycling or reutilization of residues generated from industrial activities, for environmental
reasons, the effect of the partial replacement of sand was studied by (a) Marble reject samples, (b) Granite reject samples and (c) Mixtures
of marbles and granite rejects with an unknown composition, resulting from processing of different marbles and granites, on the
mechanical properties of concrete masses. With that aim, samples were collected, dried and grinded to obtain a grain similar to that of
the sand used in preparation of concrete masses. Grinded samples were then used to prepare masses with a composition similar to the
reference material, with content of residues varying from 10-40% sand replacement and compressive and flexural strength of prepared
specimens measured. Compressive strength results of specimens with 28 days curing age were then statistically tested for eventual
differences using ANOVA, with a confidence of 95%. Results for the compressive strength show a similar behaviour to that of the reference
material, with compressive strength increasing with curing age. Granite residues show a much better performance than marble ones. This
was attributed to granite composition which is closer to that of sand. Granite assayed between 50 and 60% of SiO2 plus Al2O3. Agreement
between results is more pronounced with increasing curing age. Addition of residues up to 30% give, in general, values of the compressive
strength over the minimum value prescribed on the norm. Flexural strength gave, in general, results higher than conventional masses
but more disperse.]]>Aliabdo, A.A., A.E.M. Abd Elmoaty and E.M. Auda,2014502841Almeida, N., F. Branco and J.R. Santos,200742810819Babisk, M.P.,20092009Rai, B., N.H. Khan, K. Abhishek, S.T. Rushad and S.K. Duggal,20111827834Bacarji, E., R.D. Toledo Filho, E.A.B. Koenders, E.P. Figueiredo and J.L.M.P. Lopes,201345110Demir, I.,20064112741278Demirel, B.,2010513721380Dominguez, E.A. and R. Ullman,199611237249Goncalves, J.P.,20002000Hameed, M.S. and A.S.S. Sekar,200948389Hebhoub, H., H. Aoun, M. Belachia, H. Houari and E. Ghorbel,20112511671171Jordan, M.M., M.B. Almendro-Candel, M. Romero and J.M. Rincon,200530219224Kou, S.C., C.S. Poon and M. Etxeberria,201133286291Madivate, C., R. Manjate, H. Filimone, H. Muiambo and A. Manhique,2012555129137Monteiro, S.N. and C.M.F. Vieira,200531353358Oliveira, J.R. and L.M. Avellar,20092009Rodrigues, G.F., J.O. Alves, J.A.S. Tenorio and D.C.R. Espinosa,201258529533, (In Portuguese)Russ, W., H. Mortel and R. Meyer-Pittroff,200519117126Tayeb, B., B. Abdelbaki, B. Madani and L. Mohamed,201152529Binici, H., T. Shah, O. Aksogan and H. Kaplan,2008208299308