Can Asphalt Anchors be used without adhesive?

No.

Asphalt Anchors strength comes from the unique design of the anchors bonding iwth an adhesive and the asphalt. Unlike concrete anchors, asphalt requires both a unique anchor and the proper adhesive. ​ Our anchors are designed to install into an oversize hole, where the anchor drops in cleanly. The adhesion to the asphalt is performed by the grout.