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Study of Fine Mortar Powder from Different Waste Sources for Recycled Concrete Production

  • Eduardo Aguirre-MaldonadoEmail author
  • Francisco Hernández-Olivares
Chapter

Abstract

Searching new options to exploit crushing concrete waste or recycled mortar powder fines (RMF) has lead the development of new processes for recycling concrete. By heat treatments allow reincorporates concrete waste material into new concrete manufacturing process. The current research determines chemical composition of burned recycled mortar powder fines (BRMF) obtained from different sources. Also, this experimental research, analyzes how BRMF in addition to cement, affects to compressive strength of composite. Using a 30% BRMF ratio for replacing Ordinary Portland Cement (OPC), the study determined that the direct use of this material, decreases compressive strength of composite, reaching 21–54% of normal strength in most specimens. Based in Ca/Si ratio study, is observed how compressive strength is related to Ca/Si balance of the mixture, where the specimens with Ca/Si higher radio reach at 72% of normal compressive strength, compared to mixtures using only cement. Thus, experimental study noticed that the main criterion for assessing the use of RMF is the concentration of CaO, there are no significant differences between RFM from concrete or mortar prepared and put in work, unlike waste or special premixed mortars.

Keywords

Concrete waste Recycled Sustainability Cement Compressive strength 

Notes

Acknowledgements

The authors acknowledge the support and management to carry out this work, to the Ph.D. Sofia González Sanz, who served in the post of Department of Architecture and Art Director at the Universidad Tecnica Particular de Loja (UTPL). We are also grateful to the UTPL and its representatives for the support and provision of laboratories and equipment necessary for the conduct of the experimental phase of this work.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Eduardo Aguirre-Maldonado
    • 1
    Email author
  • Francisco Hernández-Olivares
    • 2
  1. 1.Departamento de ArquitecturaUniversidad Tecnica Particular de LojaLojaEcuador
  2. 2.Department of Building Construction and Architectural Technology, Superior Technical School of ArchitectureTechnical University of MadridMadridSpain

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