Enclosed Soak System for Deep Polymer Impregnation of Concrete Bridge Decks

by Paul R. Blankenhorn, Research Assoc.; Pennsylvania Transportation Inst., Pennsylvania State Univ., University Park, Pa.,
Philip D. Cady, (M.ASCE), Assoc. Prof.; Civ. Engrg. Dept., Pennsylvania State Univ., University Park, Pa.,
Donald E. Kline, Prof.; Materials Scil Dept., Pennsylvania State Univ., University Park, Pa.,
Richard E. Weyers, (A.M.ASCE), Grad. Asst.; Civ. Engrg. Dept., Pennsylvania State Univ., University Park, Pa.,


Serial Information: Transportation Engineering Journal of ASCE, 1975, Vol. 101, Issue 1, Pg. 65-75


Document Type: Journal Paper

Abstract: Results of polymer impregnation of concrete slabs and a bridge deck to a depth of 4 in. are presented and examined. The criteria developed for drying the slabs and bridge decks to a depth of 4 in. using gas-fired infrared heaters (applied on one surface only) is either to measure the temperature at 4 in. and cease applying heat when it reaches ≥ 230°F or stop applying heat when the rate of temperature rise on the surface is less than 10°F/hr. Impregnation by ponding of the monomer system (100 parts methyl methacrylate, 10 parts trimethylol propane trimethacrylate, and 0.5 parts azobisisobutyrl nitrile) to achieve a depth of 4 in. required 4 days or longer. Polymerization of the monomer system in the concrete can be achieved at 4 in. by using a hot water bath and by maintaining a temperature at 4 in. of ≥ 130°F.

Subject Headings: Bridge decks | Concrete bridges | Polymer | Temperature effects | Concrete slabs

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