Mechanical Resistance of Cracked Mass Concrete Repaired by Grouting: Experimental Study

作者: Simon Gallagher , Pierre Léger

DOI: 10.14359/51686581

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摘要: RESUME Pour evaluer le module de rupture et la resistance au cisaillement du beton masse repare par injection coulis, six specimens 400 x 1250 mm en avec des agregats taille maximale 100 ont ete testes suivant norme ASTM C78 une configuration chargement favorisant grandes contraintes long d'un plan vertical. L'essai a effectue sur tous les echantillons non-fissures repares (deux reparation simple deux reparations multiples utilisant coulis d'injection microfins un ratio eau/ciment (e/c) 1,0 0,5 respectivement. multiples, injectes dans cas melanges coulis. Une traction indirecte moyenne 2,8 MPa obtenue pour vierges. Cette valeur diminuee 1 l'aide rapport e/c egal respectivement, quel que soit nombre reparations. La est affectee fois d‟injection largeur fissures reparees.----------ABSTRACT To evaluate the modulus of and shear strength mass concrete repaired by grout injection, with maximum aggregate size were tested following loading promoting large stresses along vertical failure plane. was done on all virgin (two once two multiple times) using different micro fine mixes water cement (w/c) 1.0 0.5. The test single specimens; both mixes. Average indirect tensile 2.8 obtained for specimens. This value reduced to 0.5 w/c respectively equal regardless number repairs. is affected grouts crack width.

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