Title:
Durability of Pavement Repairs Field Experiment
Author(s):
M. Langlois, M. Pigeon, B. Bissonnette, and D. Allard
Publication:
Concrete International
Volume:
16
Issue:
8
Appears on pages(s):
39-43
Keywords:
air-entrainment; compressive strength; portland cement; silica fume concrete; Construction
DOI:
Date:
8/1/1994
Abstract:
Field study in which a concrete road exposed to severe winter conditions and subjected to heavy-load traffic was repaired is presented. Four different surface preparations were investigated: a cement slurry, brushing of the surface with water immediately prior to the placement operations, the same with water and silica fume, and no surface treatment. Compressive strength, air-void characteristics, and drying shrinkage were measured on specimens prepared on the job site from the five repair concretes. Pullout tests were regularly made directly on the slab every year to determine the evolution of the bonding strength. Presently, none of the repaired panels exhibit any significant cracking or scaling of the surface, and the results of the pullout tests generally indicate that there has not been any deterioration of the bond.