A visual inspection was undertaken to determine to what extent, if any, durability problems exist in precast reinforced concrete boxculvert exterior top slabs and joints between box sections and whatmeasures have been or could be successful in preventing the problems. From september 1988 through january 1990 133 culverts were inspected throughout ohio. On the basis of the results, it is recommended that external joint wrap be provided on precast concrete box culvertjoints, through-bolted guardrail post connections to box culverts not be permitted, 1/2-in. Cover be provided over longitudinal reinforcing at mating surfaces at joints, and top surfaces of box culverts be sealed. This paper appears in transportation research record no. 1315, Culverts and pipelines: design, monitoring, evaluation, and repair 1991.
Samenvatting