Construction Productivity Advancement Research (CPAR) Program: Improved Materialsand Processes for Sealing and Resealing Joints in Portland Cement Concrete

摘要

This report documents the field evaluation phase of the joint effort researchprogram conducted by Crafco, Incorporated, and the U.S. Army Engineer Waterways Experiment Station. The project was funded under the auspices of the FY 89 Construction Productivity Advancement Research (CPAR) Program. The objectives of the research effort were to (a) develop specification limits for a hot-applied, jet-fuel-resistant (JFR) sealant with improved performance characteristics as compared to current Federal Specification (FS) SS-S-1614A type materials, (b) develop specification limits for a hot-applied, non-jet-fuel-resistant (non-JFR) sealant with improved low temperature performance characteristics as compared to current FS SS-S-1401C type materials, (c) develop specification limits for a primer system that will minimize the bubbling tendencies associated with hot-applied sealants and improve adhesion characteristics to portland cement concrete (PCC), and (d) develop field data to determine performance characteristics of flush fill sealant application geometry versus 1/8 to 1/4 in. recess application techniques. The objectives were expanded to include field comparisons of the laboratory developed JFR and non-JFR sealants versus commercially available sealant materials and to verify that the developed primer system minimized bubbling tendencies of hot-applied sealants. Asphalt-based sealants, Field-molded sealants, Cold-applied sealants, Hot-applied sealants, Coal tar-based sealants, Jet-fuel-resistant sealants, Silicone-based sealants, Non-jet-fuel-resistant sealants, Two-component sealants, Polysulfide-based sealants.