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Strategies for eco-efficient dry-concrete formulation with recycled aggregates

Grant number: 12/25496-6
Support Opportunities:Regular Research Grants
Duration: May 01, 2013 - April 30, 2015
Field of knowledge:Engineering - Civil Engineering - Construction Industry
Principal Investigator:Sérgio Cirelli Angulo
Grantee:Sérgio Cirelli Angulo
Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated researchers:Carina Ulsen ; Fábio Alonso Cardoso ; Rafael Giuliano Pileggi


Nowadays, there are only few studies aiming the improvement of the eco-efficiency of dry concretes, focusing not only on technical and economical performance, but also on the environmental aspects. Physical and mechanical properties of dry concretes depend on porosity, which is controlled by porosity, granulometric distribution, packing density of aggregates. This research aims to compare, in terms of eco-efficiency, two strategies to formulate dry concretes with construction and demolition waste (CDW) recycled aggregates obtained by two different processes. CDW recycled aggregates will be produced by conventional (crushing) and advanced (density separation for porosity reduction) processes. Classical formulation strategies (with maximum packing density) and innovative ones (with maximum mobility) will be tested for reduction of pores and free water content, in order to improve physical and mechanical behavior, and eco-efficiency (by reduction of cement consumption for a given strength). Eco-efficient dry-concrete formulations with CDW recycled aggregates will be proposed to surpass sector paradigms. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DAMINELI, BRUNO L.; QUATTRONE, MARCO; ANGULO, SERGIO C.; TAQUEDA, MARIA ELENA S.; JOHN, VANDERLEY M.. Rapid method for measuring the water absorption of recycled aggregates. Materials and Structures, v. 49, n. 10, p. 4069-4084, . (13/03688-3, 12/25496-6, 12/15195-9)
RAPHAEL BALDUSCO DA SILVA; SÉRGIO CIRELLI ANGULO; RAFAEL GIULIANO PILEGGI; CLAUDIO OLIVEIRA SILVA. Concretos secos produzidos com agregados reciclados de RCD separados por densidade. Ambient. constr., v. 15, n. 4, p. 335-349, . (12/25496-6)
QUATTRONE, M.; CAZACLIU, B.; ANGULO, S. C.; HAMARD, E.; COTHENET, A.. Measuring the water absorption of recycled aggregates, what is the best practice for concrete production?. CONSTRUCTION AND BUILDING MATERIALS, v. 123, p. 690-703, . (12/25496-6, 12/15195-9)
GOMES, P. C. C.; ULSEN, C.; PEREIRA, F. A.; QUATTRONE, M.; ANGULO, S. C.. Comminution and sizing processes of concrete block waste as recycled aggregates. WASTE MANAGEMENT, v. 45, n. SI, p. 171-179, . (12/25496-6, 12/15195-9)

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