Impact of alternative cementitious material on the mechanical and transfer properties of concrete

Alexandre Pavoine (1) , David Harbec (2) , Thierry Chaussadent (3) , Arezki Tagnit-Hamou (2) , Loïc Divet (3)

1 Laboratoire Eco-Matériaux, CEREMA
2 UdeS - Université de Sherbrooke
3 IFSTTAR/MAST/CPDM - Comportement Physico-chimique et Durabilité des Matériaux

An experimental program was carried out to characterize the risk of corrosion in reinforced concretes, designed with alternative cementitious materials (ACMs). The study focuses on three alternative cementitious materials used with ordinary Portland cement: glass powder (GP) obtained from mix glass, alternative fly ash (AFA) obtained from the combustion of wastepaper deinking sludge and wood residues in a fluidized-bed reactor, and limestone filler (LF). Concrete specimens casted with a Water-to-Binder ratio (W/B) of 0.4 and 0.55 were tested in order to determine compressive strength, chloride ion penetration, chloride diffusion, and porosity accessible to water. Reinforced concretes were also submitted to accelerated corrosion tests. The use of GP in replacement of cement yielded to a good resistance to chloride ion penetration. In this case, low level of chloride ion penetration is maintained despite the increase of W/B. Hence, measurements of chloride ion penetration do not correlate with compressive strength values. The AFA slightly increases the chloride ion penetration, while the use of limestone filler has no significant impact. The chloride ion penetration tests show a good relation with the accelerated corrosion tests.

Mots clés: CENDRE VOLANTE; CORROSION; CHLORURE; DURABILITE

Domaines: Matériaux; Matériaux

Alexandre Pavoine, David Harbec, Thierry Chaussadent, Arezki Tagnit-Hamou, Loïc Divet. Impact of alternative cementitious material on the mechanical and transfer properties of concrete. Materials Journal, 2014, 111 (3), pp 251-261. ⟨hal-01004231⟩