Reference : Development and use of foamed recycled fibers to control shrinkage cracking of cement...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Chemical engineering
Engineering, computing & technology : Civil engineering
Engineering, computing & technology : Materials science & engineering
Development and use of foamed recycled fibers to control shrinkage cracking of cementitious mortars
Coppola, Bartolomeo mailto [Université de Liège - ULiège > > > Form. doct. sc. ingé. & techn. (archi., gén. civ. - paysage)]
Di Maio, Luciano []
Courard, Luc mailto [Université de Liège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil >]
Scarfato, Paola []
Incarnato, Loredana []
Proceedings of the 4rd Workshop "The New Boundaries of Structural Concrete"
4rd Workshop "The New Boundaries of Structural Concrete"
September 29th - October 1st
ACI-Italy Chapter
[en] Fiber ; Shrinkage cracking ; Fiber/matrix ITZ
[en] In this study a new class of engineered fibers were produced using end of waste materials obtained from post-consumer plastics. Taking into account the rising issue of plastic waste disposal and the importance of fiber/matrix adhesion for composites materials, recycled plastic fibers with improved adhesion were developed. In particular, foamed fibers presenting a rough surface and a porous morphology were obtained by a foam extrusion process using a chemical blowing agent. Fiber reinforced mortars (FRMs) were produced containing foamed fibers at three volume fractions (0.50, 1 and 2 %) and two lengths (15 and 30 mm). FRM plastic shrinkage cracking resistance was investigated: the better adhesion of foamed fibers influenced cracks propagation, reducing crack area and delaying crack openings during shrinkage. Moreover, shorter fibers are better efficient in controlling cracks length while longer fibers are able to reduce cracks width and number.

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