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Cementitious Blends of Portland Cement with Calcium Sulphate, Fly Ash and Cupola Slag.

Published online by Cambridge University Press:  22 November 2012

Yared E. Rodríguez-Mendoza ,
Antonio F Fuentes  and
J Iván Escalante-García
Yared E. Rodríguez-Mendoza
Affiliation:
Cinvestav IPN Unidad Saltillo, Mexico
Antonio F Fuentes
Affiliation:
Cinvestav IPN Unidad Saltillo, Mexico
J Iván Escalante-García
Affiliation:
Cinvestav IPN Unidad Saltillo, Mexico
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Abstract

This investigation is on alternative cementitious materials of low cost, energy and environmental emissions. Portland cement (PC) was replaced by different types of calcium sulphate (hemihydrate HH, or anhydrite AN), fly ash (PFA) and cupola slag (CS) from an iron foundry. Pastes of blends of (HH or AN) – CS – PC and (HH or AN) – PFA – PC were characterized. The compositions varied within the ranges of 0 – 35% PC, 15 – 80% HH or AN, 10 – 80% CS and 10 – 80% PFA. The water/solids ratio was kept at 0.45 for HH blends and 0.37 for those of AN. The pastes were cured in dry and for some time under water. Selected blends of CS were repeated with blast furnace slag (BFS) for comparison. CS showed better results over PFA and less than BFS, perhaps as derived from its chemical composition, phase configuration and physical characteristics. These and other results of microstructural characterization will be discussed. This work is part of a broader research on the development of alternative environment friendly hydraulic composite cements of Portland cement highly replaced by calcium sulphate and industrial byproducts.

Keywords

compositebiologicaladditives
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1488: Symposium 7B – Concrete with Smart Additives and Supplementary Cementitious Materials , 2012 , imrc12-1488-07b-013
Copyright
Copyright © Materials Research Society 2012 

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References

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