Les bétons autoplaçants renforcés par un fibrage mixte et multi-échelle : de la formulation au comportement mécanique

Abstract

Hybrid fiber reinforced self-compacting concrete from formulation to mechanical behavior

In most cases, fiber reinforced self-compacting concrete (FRSCC) contains only one type of fiber. The use of two or more types of fibers in a suitable combination may potentially not only improve the overall properties of self-compacting concrete, but may also result  in performance synergy. The combining of fibers, often called hybridization, is investigated in this paper for a cimentous matrix. Control, single, two fibers hybrid composites were cast using different fiber type steel and polypropylene with  different sizes. Flexural toughness tests were performed and results were extensively analyzed to identify synergy, if any, associated with various fiber combinations. Based on various analysis schemes, the paper identifies fiber combinations that demonstrate maximum synergy in terms of flexural toughness.