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- W2247389149 abstract "Blue Earth County in Minnesota has developed a process for bituminous pavement design and construction for low-volume roads in cold climates. Principal features of the process include cost-effectiveness, quality pavements, and the flexibility to adapt the design to the particular road segment. The process allows separate payment for asphalt cement and aggregate. However, the contractor must pay for any asphalt cement over a given percentage. This requires the contractor to balance the quality and gradation of aggregate against the cost of providing asphalt over the given maximum amount. Construction inspection remains the county's responsibility. This typically saves $0.50 per ton added to contracts for the quality management approach where design and testing responsibilities lie with the contractor. Key features necessary to ensure quality pavements include approval of a trial mix by Minnesota Department of Transportation, provision of a nuclear density gauge and roll test patterns to determine the maximum density compaction process, regular gradation and asphalt cement content tests to ensure that a proper blend of quality materials is used, regular voids content tests during construction, and trimming of the aggregate base by use of automatic controls on a motor grader to ensure good ride quality and a uniform aggregate base and pavement section. The process described has evolved over the last 5 years. There is no quantitative measure of results. Qualitatively, results appear to be good. In addition, the concepts appear to be consistent with the Super Pave Level I concepts of the Strategic Highway Research Program now being implemented." @default.
- W2247389149 created "2016-06-24" @default.
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- W2247389149 date "1995-01-01" @default.
- W2247389149 modified "2023-09-27" @default.
- W2247389149 title "BITUMINOUS PAVEMENT DESIGN AND CONSTRUCTION FOR LOW-VOLUME ROADS IN COLD CLIMATES" @default.
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