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Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement
This study has examined the effect of natural pozzolan (NP), colemanite ore waste (CW), coal fly ash (FA), and coal bottom ash (BA) on the properties of cement and concrete. The parameters studied included compressive strength, bending strength, volume expansion, and setting time. A number of cements were prepared (in the presence of fixed quantity of 10% FA, 10% BA, and 4% CW) by the replacement of Portland cement (PC) with NP in range of 5-30%. The results showed that the final setting time of cement pastes were generally accelerated when the NP replaced part of the cement. However, NP exhibited a significant retarding effect when used in combination with CW. The results also showed that the inclusion of NP at replacement levels of 5% resulted in an increase in compressive strength of the specimens compared with that of the control concrete. The replacement of PC by 10-15% of NP in the presence of fixed quantity of CW improves the bending strength of the specimens compared with control specimens after 60 days of curing age.
Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement
This study has examined the effect of natural pozzolan (NP), colemanite ore waste (CW), coal fly ash (FA), and coal bottom ash (BA) on the properties of cement and concrete. The parameters studied included compressive strength, bending strength, volume expansion, and setting time. A number of cements were prepared (in the presence of fixed quantity of 10% FA, 10% BA, and 4% CW) by the replacement of Portland cement (PC) with NP in range of 5-30%. The results showed that the final setting time of cement pastes were generally accelerated when the NP replaced part of the cement. However, NP exhibited a significant retarding effect when used in combination with CW. The results also showed that the inclusion of NP at replacement levels of 5% resulted in an increase in compressive strength of the specimens compared with that of the control concrete. The replacement of PC by 10-15% of NP in the presence of fixed quantity of CW improves the bending strength of the specimens compared with control specimens after 60 days of curing age.
Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement
Targan, S. (Autor:in) / Olgun, A. (Autor:in) / Erdogan, Y. (Autor:in) / Sevinc, V. (Autor:in)
Cement and Concrete Research ; 33 ; 1175-1182
2003
8 Seiten, 22 Quellen
Aufsatz (Zeitschrift)
Englisch
Flugasche , Erz , Druckfestigkeit , Portlandzement , Colemanit , Biegefestigkeit , Expansion , Dehnungsmessung , Additiv
| British Library Online Contents | 2003
Influence of colemanite admixture on Portland cement durability
| Online Contents | 2012