Field performance evaluation of CRAFCO Roadsaver self-leveling sealant (FHWA-OK-98-08) 2700

Abstract

On July 24, 1995, joints in a 61 m (200 ft.) test section on project STP-324(78) were sealed with Crafco Roadsaver. Crafco Roadsaver is a self-leveling silicone sealant. Joints in the remainder of the project were sealed with an approved self-leveling sealant. A 61 m (200 ft.) control section, with joints sealed with the approved sealant, was selected for comparison. According to contractor's employees who applied the sealant, there was no noticeable difference in the difficulty of application between the two sealants . The Crafco Roadsaver sealant appeared to have good adhesion to the sides of the joints. Bubbles formed in the Crafco Roadsaver sealant over most (approximately 60%) of the test section but were later found to be only a surface problem. Both the test and control sections were monitored over a three year evaluation period. Both sealants performed well and had no failures during the evaluation period. The conclusion of this author is that no reason can be found for the specifications for use of self-leveling silicone sealants not to be rewritten to include Crafco Roadsaver Sealant.