Title:
Shotcrete Repair Saves Baltimore
Bridges
Author(s):
I. Leon Glassgold
Publication:
Concrete International
Volume:
2
Issue:
9
Appears on pages(s):
120-125
Keywords:
bri shotcrete. dges (structures); maintenance; repairs;
DOI:
Date:
9/1/1980
Abstract:
The dry-mix fine-aggregate shotcrete process is still the most widely used shotcrete process for the repair of concrete structures and linings, especially for small patch and thin section repair. Shotcrete repair is extremely effective for variable depth repairs of bridge beams, caps, columns, abutments, wingwalls, and underdeck where deterioration has been accelerated by the introduction of continuous beam design, shallow depth.deck slabs, asphalt sur-facing, and the heavy use of deicers. Baltimore, Md., has established an annual preventive maintenance shotcrete program to provide emergency repairs and upgrade bridges as the budget allows. The repair pro-gram consists of three basic steps: (1) preparation of disintegrated areas; (2) removing bad reinforcing steel and placing galvanized welded wire fabric; and (3) shotcreting. [Author]