Improving of recycled mixed CDW aggregates performance by means of thermal and coating treatments

• Grant number: 12/15195-9
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): February 01, 2013
• Effective date (End): June 30, 2016
• Field of knowledge: Engineering - Civil Engineering
• Principal Investigator: Vanderley Moacyr John
• Grantee: Marco Quattrone
• Home Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The recycling of Construction and Demolition Waste (C&DW) has emerged as a socio-economic priority and a considerable amount of research and development has taken place in different research organizations.In the last five years the global consumption of cement has always increased and it is clear that will be necessary to use recycled aggregates in the next future. New developing economies are driving the increase of cement consumption; the consumption of Brazil is about 60 million tons and Brazil has also been the sixth producer with 58 million tons.Problems linked to the use of recycled aggregates concern the following aspects:*the scarcity of natural aggregates nearby metropolitan area (e.g. São Paulo metropolitan area);*the depletion of raw materials;*the increase of transportation costs and the consequent increase of gas emissions;*the production of inert wastes' huge quantities;*the decrease of landfill sites' capacity.The main idea of this proposal concerns the improvement of recycled aggregate's characteristics to expand recycled aggregates market. So, the objective of this research is to investigate the feasibility of production of high quality mixed CDW aggregates (with red ceramic waste inside) by means of thermal or thermo-mechanical treatment and coating, as well as to compare the environmental impacts of such solutions. Microstructure and characteristics of recycled aggregates will be investigated by means of different techniques (e.g. SEM/EDS, MIP, BET, etc.). On the other hand, to understand how those treatments influence energy consumption and CO2 footprint, the sustainability of the final product will be evaluated for different scenarios.

Scientific publications

(6)

(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)

JOHN, VANDERLEY M.; DAMINELI, BRUNO L.; QUATTRONE, MARCO; PILEGGI, RAFAEL G. Fillers in cementitious materials - Experience, recent advances and future potential. CEMENT AND CONCRETE RESEARCH, v. 114, n. SI, p. 65-78, DEC 2018. Web of Science Citations: 6.

SANTOS, WINNIE F.; QUATTRONE, MARCO; JOHN, VANDERLEY M.; ANGULO, SERGIO C. Roughness, wettability and water absorption of water repellent treated recycled aggregates. CONSTRUCTION AND BUILDING MATERIALS, v. 146, p. 502-513, AUG 15 2017. Web of Science Citations: 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, OCT 1 2016. Web of Science Citations: 14.

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, OCT 2016. Web of Science Citations: 3.

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, NOV 2015. Web of Science Citations: 7.

QUATTRONE, MARCO; ANGULO, SERGIO C.; JOHN, VANDERLEY M. Energy and CO2 from high performance recycled aggregate production. RESOURCES CONSERVATION AND RECYCLING, v. 90, p. 21-33, SEP 2014. Web of Science Citations: 15.