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Dowel bar retrofit (DBR) is a process that re-establishes load transfer capability on joints and cracks by installing epoxy-coated, round steel dowels into existing concrete pavement across transverse joints and/or cracks. Slots are cut using diamond-tipped saw blades; the existing concrete is removed and the dowels are placed in the slots ...
The technique is not perfect, as freeze-thaw cycles (in cold-winter regions) and tree root growth can eventually result in damage which requires repair. In highly variable climates which undergo multiple freeze-thaw cycles, concrete blocks will be formed with separations, called expansion joints, to allow for thermal expansion without breakage.
Worthington Enterprises, Inc. is a global diversified metals manufacturing company based in Columbus, Ohio.It is a steel processor and manufacturer of pressure vessels, such as propane, oxygen and helium tanks, hand torches, refrigerant and industrial cylinders, camping cylinders, exploration, recovery and production products for global energy markets; water system tanks for storage, treatment ...
Parks, non-active driveways, and tracks are ideal options over sidewalks, which can be crowded and uneven. For extra stability when starting, walk near a wall or railing, or ask a partner to join ...
Although chipseal is an effective low-cost way to repair roads, it has some drawbacks. Loose crushed stone is often left on the surface, owing to underapplication of bitumen or overapplication of stone. If not removed, this can cause safety and environmental problems such as cracked windshields, chipped paint, loss-of-control crashes ...
The season for snowfall has already begun in several parts of the country, and one of the most laborious chores related to the winter weather is snow shoveling.. Though the task may just be ...
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