![]() ![]() The anchors bond to asphalt using an epoxy or cement (generically called "grout"). An internal thread accepts a bolt that is used to attach the structure to the anchor. The special-purpose anchors are installed flush with the asphalt surface. In the case of asphalt, the continuous ("static") pressure exerted on the asphalt walls by the expansion anchors causes the asphalt to flow, and the anchors will loosen and lose their grip in a very short period of time (hours or a few days). These anchors expand in the hole and rely on the pressure against the walls of the concrete around them to create friction that jams them in place. This rules out the use of the common wedge anchors used on concrete. In addition, asphalt "creeps" under sustained forces. Asphalt is about 20 times more yielding than concrete.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |