High activity pozzolan obtained from selection of excavation soils in a Construction and Demolition Waste landfill

Pereira, Valdir M.; Baldusco, Raphael; Nobre, Thiago; Quarcioni, Valdecir A.; Vieira Coelho, Antonio C.; Angulo, Sergio C.

doi:10.1016/j.jobe.2024.108494

Journal of Building Engineering

2024

DOI: 10.1016/j.jobe.2024.108494

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High activity pozzolan obtained from selection of excavation soils in a Construction and Demolition Waste landfill

Valdir M. Pereira,

Raphael Baldusco,

Thiago Nobre

et al.

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2024

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Cited by 4 publications

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Physical-chemical characterization of construction and demolition waste powder with thermomechanical activation for use as supplementary cementitious material

Baggio,

Possan,

de Oliveira Andrade

2024

Construction and Building Materials

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Physical-chemical characterization of construction and demolition waste powder with thermomechanical activation for use as supplementary cementitious material

Baggio,

Possan,

de Oliveira Andrade

2024

Construction and Building Materials

View full text Add to dashboard Cite

Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption

Sui,

Wang,

Chen

et al. 2024

Case Studies in Construction Materials

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Thermoactivated cement from construction and demolition waste for pavement base stabilization: A case study in Brazil

Pereira,

Baldusco,

Silva

et al. 2024

Waste Manag Res

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Construction and demolition waste (CDW) worldwide generation accounts 10 billion tonnes yearly. The major fraction is landfilled requiring innovative recycling methods to reduce the associated environmental impacts and to increase its circularity. Our study demonstrated the feasibility of using different CDW fines to develop recycled cements and optimized the content of CDW recycled cements with well-graded crushed stone (WGCS) for use as pavement base layer. We scaled up the study obtaining CDW cement and aggregates from a local recycling plant, as well as pilot pavement sections designed, constructed and field deflections measured. As results, the CDW cement pastes exhibited accumulated heat values of up to 111 J g−1 and achieved a compressive strength of approximately 16 MPa. The unconfined compressive strength and resilient modulus (RM) achieved using CDW cement and WGCS were 2–3 and >3000 MPa, respectively. The sections constructed using CDW cement exhibited intermediate behaviour compared to those obtained using reference materials (6% Portland cement-WGCS and a conventional granular base made using WGCS). The deflection decreased over time owing to the pozzolanic reaction.

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High activity pozzolan obtained from selection of excavation soils in a Construction and Demolition Waste landfill

Cited by 4 publications

References 68 publications

Physical-chemical characterization of construction and demolition waste powder with thermomechanical activation for use as supplementary cementitious material

Physical-chemical characterization of construction and demolition waste powder with thermomechanical activation for use as supplementary cementitious material

Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption

Thermoactivated cement from construction and demolition waste for pavement base stabilization: A case study in Brazil

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