A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Protective Coatings for Concrete Bridge Decks
Performance of protective coatings for bridge decks is evaluated. Applications to bridges on the New York State highway system from 1961 through 1967 included (1) surface overlays, (2) membranes between the structural slab and bituminous wearing course, and (3) surface sealants. Overlays and membranes consisted of epoxies, polyesters, polyurethanes, latexes, neoprenes, silicone rubbers, and asphalt cutbacks. Surface sealants included silicones, distillate oils, and linseed oil. None of the surface overlays lasted more than 2 to 3 yr. However, a flexible polyester, resin with fiber glass has provided satisfactory service for 1 1/2 yr and will remain under observation. Leakage of box-girder bridges with a membrane was primarily due to shear-key construction (since modified), while the same materials applied to composite bridges were associated with leakage that could not be explained. A more comprehensive survey of membranes is planned. Silicone and distillate oil sealants on non-air-entrained concrete did not improve long-term durability. Air-entrained concrete, both with and without linseed oil treatment, showed no evidence of deterioration after 4 yr of exposure. (Author)
Protective Coatings for Concrete Bridge Decks
Performance of protective coatings for bridge decks is evaluated. Applications to bridges on the New York State highway system from 1961 through 1967 included (1) surface overlays, (2) membranes between the structural slab and bituminous wearing course, and (3) surface sealants. Overlays and membranes consisted of epoxies, polyesters, polyurethanes, latexes, neoprenes, silicone rubbers, and asphalt cutbacks. Surface sealants included silicones, distillate oils, and linseed oil. None of the surface overlays lasted more than 2 to 3 yr. However, a flexible polyester, resin with fiber glass has provided satisfactory service for 1 1/2 yr and will remain under observation. Leakage of box-girder bridges with a membrane was primarily due to shear-key construction (since modified), while the same materials applied to composite bridges were associated with leakage that could not be explained. A more comprehensive survey of membranes is planned. Silicone and distillate oil sealants on non-air-entrained concrete did not improve long-term durability. Air-entrained concrete, both with and without linseed oil treatment, showed no evidence of deterioration after 4 yr of exposure. (Author)
Protective Coatings for Concrete Bridge Decks
R. J. Irwin (author) / T. A. Corbisiero (author)
1969
28 pages
Report
No indication
English
Civil Engineering , Coatings, Colorants, & Finishes , Ceramics, Refractories, & Glass , Bridges , Pavements , Protective treatments , Concrete , Coatings , Deterioration , Plastics , Synthetic rubber , Silicone plastics , Oil seals , Membranes , Sealing compounds , Experimental data , Life expectancy , Composite materials , Box beams , Cements , Construction , New York , Bridge decks , Concrete durability , Prestressed concrete , Bituminous concretes , Air entrained concretes , Portland cements
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