A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid-Setting Belitic Calcium Sulfoaluminate Concrete Pavement at Seattle-Tacoma International Airport: A 25-Year History
Seattle-Tacoma International Airport (SEA) has 25 years of experience using rapid-setting Belitic Calcium Sulfoaluminate (BCSA) concrete for overnight slab replacements on runways, taxiways, and aprons. More than 500 runway panels were replaced on Runway 16R/34L at night over a span of 13 years. Initially used for just its rapid setting properties, it was thought the BCSA concrete slabs would not last longer than ten years, based on the traditional experience with rapid-setting Portland cement concretes. However, the SEA experience has shown that BCSA replacement slabs, which have a very different chemistry, have higher long-term strength gain and lower shrinkage than Portland cement concrete replacement slabs. What started as using BCSA concrete replacement slabs for short-term repair has turned into a program for long-term repair. In addition to exploiting the rapid strength gain for overnight pavement rehabilitation, the airport has also recently tested a 12.2 m by 11.3 m (40-ft by 37.5 ft) slab that is 457 mm (18 in.) in thickness. This technology would allow a modification of traditional pavement design, replacing four adjacent slabs by a single slab on a single night. When the evaluation is complete, the technique may be used to rehabilitate taxiways at night.
Rapid-Setting Belitic Calcium Sulfoaluminate Concrete Pavement at Seattle-Tacoma International Airport: A 25-Year History
Seattle-Tacoma International Airport (SEA) has 25 years of experience using rapid-setting Belitic Calcium Sulfoaluminate (BCSA) concrete for overnight slab replacements on runways, taxiways, and aprons. More than 500 runway panels were replaced on Runway 16R/34L at night over a span of 13 years. Initially used for just its rapid setting properties, it was thought the BCSA concrete slabs would not last longer than ten years, based on the traditional experience with rapid-setting Portland cement concretes. However, the SEA experience has shown that BCSA replacement slabs, which have a very different chemistry, have higher long-term strength gain and lower shrinkage than Portland cement concrete replacement slabs. What started as using BCSA concrete replacement slabs for short-term repair has turned into a program for long-term repair. In addition to exploiting the rapid strength gain for overnight pavement rehabilitation, the airport has also recently tested a 12.2 m by 11.3 m (40-ft by 37.5 ft) slab that is 457 mm (18 in.) in thickness. This technology would allow a modification of traditional pavement design, replacing four adjacent slabs by a single slab on a single night. When the evaluation is complete, the technique may be used to rehabilitate taxiways at night.
Rapid-Setting Belitic Calcium Sulfoaluminate Concrete Pavement at Seattle-Tacoma International Airport: A 25-Year History
McNerney, Michael T. (author) / Khilfeh, Saher (author) / Bescher, Eric P. (author)
International Conference on Transportation and Development 2020 ; 2020 ; Seattle, Washington (Conference Cancelled)
2020-08-31
Conference paper
Electronic Resource
English
Nighttime Cement Concrete Pavement Replacement: Seattle-Tacoma International Airport
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