Mechanical behaviour of repair mortars

Abdenour Alliche (1) , Amjad Mallat (2)

1 DALEMBERT - Institut Jean Le Rond d'Alembert
2 CNRS-L - National Council for Scientific Research = Conseil national de la recherche scientifique du Liban [Lebanon]

We investigate two repair mortars using mechanical tests specifically developed for this type of material. The first is a fibre reinforced lime-based mortar, which contains thickening agent and limestone additions. The second is a fibre reinforced ordinary mortar, which contains a small quantity of silica fume and additives. The mechanical characterisation of the materials is based on tension, compression and three-point bending tests. The bond between the repair mortars and substrate was investigated by slant shear and flexural bonding tests. The results obtained have demonstrated the influence of the surface roughness and moisture conditions on the bond strength. Finally, scanning electron microscope observations have showed the morphology of the repair mortar-to-substrate interfacial zone.

Domaines: Mécanique des matériaux [physics.class-ph]

Abdenour Alliche, Amjad Mallat. Mechanical behaviour of repair mortars . European Journal of Environmental and Civil Engineering, 2012, 16 (Suppl 1), ⟨10.1080/19648189.2012.681958⟩. ⟨hal-01431234⟩