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Microstructure of Concrete with Aggregates from Construction and Demolition Waste Recycling Plants

Published online by Cambridge University Press:  23 December 2015

Miguel Bravo ,
António Santos Silva ,
Jorge de Brito  and
Luís Evangelista
Miguel Bravo
Affiliation:
CERis-ICIST, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
António Santos Silva
Affiliation:
Laboratório Nacional de Engenharia Civil, Av. do Brasil 101, 1700-066 Lisbon, Portugal
Jorge de Brito*
Affiliation:
CERis-ICIST, Department of Civil Engineering, Architecture and Georresources, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
Luís Evangelista
Affiliation:
CERis-ICIST, Department of Civil Engineering, Instituto Superior de Engenharia de Lisboa, R. Conselheiro Emídio Navarro 1, 1959-001 Lisbon, Portugal
*
*Corresponding author. jb@civil.ist.utl.pt
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Abstract

This paper intends to analyze the microstructure of concrete with recycled aggregates (RA) from construction and demolition waste from various Portuguese recycling plants. To that effect, several scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses were performed. Various concrete mixes were evaluated in order to analyze the influence of the RA’s collection point and consequently of their composition on the mixes’ characteristics. Afterward all the mixes were subjected to the capillary water absorption test in order to quantitatively evaluate their porosity. Results from the SEM/EDS analysis were compared with those from capillary water absorption test. The SEM/EDS analysis showed that the bond capacity of aggregates to the new cement paste is greatly influenced by the RA’s nature. On the other hand, there was an increase in porosity with the incorporation of RA.

Keywords

concreteconstruction and demolition wasterecycled aggregatesITZmicroscopy
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 22 , Issue 1 , February 2016 , pp. 149 - 167
Copyright
© Microscopy Society of America 2015 

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References

Portuguese Association of the Ready-Mixed Concrete Companies (APEB) (2007). Aggregates for concrete. From production to use. Lisbon: APEB, 91pp. (in Portuguese).Google Scholar
Bravo, M., Brito, J., Pontes, J. & Evangelista, L. (2015a). Durability performance of concrete with recycled aggregates from construction and demolition waste plant. Constr Build Mater 77, 357–369.CrossRefGoogle Scholar
Bravo, M., Brito, J., Pontes, J. & Evangelista, L. (2015b). Mechanical performance of concrete made with aggregates from construction and demolition waste recycling plants. J Clean Prod 99, 59–74.CrossRefGoogle Scholar
Brito, J. & Robles, R. (2010). Recycled aggregate concrete—Methodology for estimating its long-term properties. Indian J Eng Mater Sci 17(6), 449–462.Google Scholar
Coelho, A. & de Brito, J. (2011). Economic analysis of conventional versus selective demolition—A case study. Resour Conserv Recy 55(3), 382–392.CrossRefGoogle Scholar
Coutinho, J. (2002). Materials science. Binders and aggregates, Faculty of Engineering of the Porto University, Porto, 155pp. (in Portuguese).Google Scholar
Diamond, S. (2001). Considerations in image analysis as applied to investigations of the ITZ in concrete. Cem Conc Comp 23, 171–178.CrossRefGoogle Scholar
Domone, P.L. (1998). In Concrete—Constituent Materials of Concrete: Their Nature and Behavior, J.M. Illston (Ed.), pp. 89–195. London: E&FN Spon.Google Scholar
EN 12620 (2008). Aggregates for concrete, Committee European of Normalization, Brussels.Google Scholar
EN 206-1 (2013). Concrete. Specification, performance production and conformity, Committee European of Normalization, Brussels.Google Scholar
Evangelista, L. & de Brito, J. (2007). Mechanical behaviour of concrete made with fine recycled concrete aggregates. Cem Conc Comp 29(5), 397–401.CrossRefGoogle Scholar
Evangelista, L. & de Brito, J. (2010). Durability performance of concrete made with fine recycled concrete aggregates. Cem Conc Comp 32(1), 9–14.CrossRefGoogle Scholar
Faury, J. (1958). Le béton, 3rd ed.Paris: Dunod.Google Scholar
Guedes, M., Evangelista, L., de Brito, J. & Ferro, A. (2013). Microstructural characterization of concrete prepared with recycled aggregates. Microsc Microanal 19(5), 147–155.CrossRefGoogle ScholarPubMed
Lee, G. & Choi, H. (2013). Study on interfacial transition zone properties of recycled aggregate by micro-hardness test. Constr Build Mater 40, 455–460.CrossRefGoogle Scholar
Li, W., Xiao, J., Sun, Z., Kawashima, S. & Shah, S. (2012). Interfacial transition zones in recycled aggregate concrete with different mixing approaches. Constr Build Mater 35, 1045–1055.CrossRefGoogle Scholar
Medina, C., Frías, M. & Sánchez de Rojas, M. (2012). Microstructure and properties of recycled concretes using ceramic sanitary ware industry waste as coarse aggregate. Constr Build Mater 31, 112–118.CrossRefGoogle Scholar
Mehta, P. K. & Monteiro, P. J. M. (2006). Concrete: Microstructure, Properties and Materials, 3rd edn.New York: McGraw-Hill. 344pp.Google Scholar
Pereira, P., Evangelista, L. & de Brito, J. (2012). The effect of superplasticizers on the mechanical performance of concrete made with fine recycled concrete aggregates. Cem Conc Comp 34(9), 1044–1052.CrossRefGoogle Scholar
Pinto, T. (1999). Methodology for the differentiated management of solid waste from urban construction. PhD Thesis, Construction Engineering Department, Polytechnic School of the São Paulo University, São Paulo, 189pp. (in Portuguese).Google Scholar
Poon, C.S., Shui, Z.H. & Lam, L. (2004). Effect of microstructure of ITZ on compressive strength of concrete prepared with recycled aggregates. Constr Build Mater 18(6), 461–468.CrossRefGoogle Scholar
Rodrigues, F., Carvalho, T., Evangelista, L. & de Brito, J. (2013). Physical-chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants. J Clean Prod 52, 438–445.CrossRefGoogle Scholar
Salem, R.M. & Burdette, E.G. (1998). Role of chemical and mineral admixture on physical properties and frost-resistance of recycled aggregate concrete. ACI Mater J 95(5), 558–563.Google Scholar
Scrivener, K.L. (2004). Backscattered electron imaging of cementitious microstructures: Understanding and quantification. Cem Conc Comp 26, 935–945.CrossRefGoogle Scholar
Tam, V., Gao, X. & Tam, C. (2005). Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach. Cem Conc Res 35(6), 1195–1203.CrossRefGoogle Scholar
Xiao, J., Li, W., Sun, Z., Lange, D. & Shah, S. (2013). Properties of interfacial transition zones in recycled aggregate concrete tested by nanoindentation. Cem Conc Comp 37, 276–292.CrossRefGoogle Scholar
Zaharieva, R., Buyle-Bodin, F., Skoczylas, F. & Wirquin, E. (2003). Assessment of the surface permeation properties of recycled aggregate concrete. Cem Conc Res 25(2), 223–232.CrossRefGoogle Scholar