Title:
Self-Compacting Concrete With C&DW: Microstructure And Long-Term
Author(s):
Stefania Manzi; Claudio Mazzotti and Maria Chiara Bignozzi
Publication:
Symposium Paper
Volume:
305
Issue:
Appears on pages(s):
17.1-17.8
Keywords:
construction and demolition waste; long-term behavior; mechanical properties; microstructure; porosity; self-consolidating concrete; sustainability
DOI:
10.14359/51688577
Date:
9/1/2015
Abstract:
Mix-design of self-consolidating concrete (SCC) with construction and demolition concrete waste (C&DW) as recycled aggregates is investigated. The novelty of this paper consists in the possibility of using both fine and coarse high-grade C&DW for the preparation of new SCC. The effects of recycled aggregates on porosity measurements and mechanical investigations combined with time-dependent properties are investigated. A reference SCC mix, with natural aggregates and the same water/powder ratio as SCC with recycled aggregates, is reported for comparison. Results are correlated in an integrated approach to study the feasibility of structural SCC with medium-high mechanical strength.
Finally, this work attempts to strengthen the concept of sustainability in civil constructions.