Mechanical properties of organic-based lightweight concretes and their impact on economic and ecological performances

Zwicky, Daia (School of Engineering and Architecture (HEIA-FR), HES-SO // University of Applied Sciences Western Switzerland)

This study aimed at improving mechanical properties of wood-cement compounds, basically consisting of Portland cement and of up to 60% of untreated sawdust, through an aggregate skeleton made of organic aggregates (fruit pits, crushed nut shells) and lightweight aggregates (expanded clay and glass). Experimental results show that workability and strength development can be notably improved. Compressive strength can be doubled, and elastic modulus can be tripled. All properties exhibited a marked influence of organic aggregate content. Contextualized comparisons show that the developed alternative lightweight concretes (LC) can be economically competitive with regular LC while the eco-balance is reduced by 70–80%.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIA-FR
Institute:
iTEC - Institut des technologies de l'environnement construit
Date:
2020-06
Pagination:
9 p.
Published in:
Construction and Building Materials
Numeration (vol. no.):
2020, vol. 245, article no. 118413
DOI:
ISSN:
0950-0618
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2020-09-01, last modified 2020-10-27

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