DOWSIL™ 902 RCS (Rapid Cure Silicone) Joint Sealant is a self-leveling, cold-applied, rapid-cure, two-part, easy-to-install, ultra-low-modulus, 100 percent silicone rubber sealant designed to seal expansion joints that experience both thermal and/or vertical movements due to traffic loading. DOWSIL™ 902 RCS Joint Sealant can be used for new and remedial applications. Its rapid cure is especially well suited for maintenance work, such as bridge joint resealing, where resealing must be completed within a short time period (i.e., less than 8 hours) to minimize traffic disruption.

The ultra-low modulus of DOWSIL™ 902 RCS Joint Sealant allows it to accommodate the high degree of movement associated with expansion joints on bridges. Its rapid cure means it will cure fast enough to accommodate typical daily thermal movements and/or differential joint movement caused by traffic without being damaged (see Figure 1). In comparison, one-part sealants typically require 7 to 21 days to cure and often are prematurely damaged due to excessive movement prior to complete cure.

DOWSIL™ 902 RCS Joint Sealant is self-leveling, allowing it to conform to irregularly shaped joints. In many instances, this may eliminate the need for minor joint refacing, reducing repair time and cost.