United States Department of Transportation
i
Monitoring and modeling of pavement response and performance task B : New York volume 3, I90.
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2012-05-01
[PDF-14.12 MB]
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Alternative Title:Monitoring and modeling of pavement response and performance task B : New York Pooled Fund Project TPF-5 (121) volume 3, I90
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Edition:Technical report.
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Abstract:This research presents the evaluation and comparison of two Portland-cement concrete (PCC) pavement test
sections with cement-treated permeable bases (CTPB) and dense-graded aggregate bases (DGAB) on the Interstate
90 Thruway in New York. Two instrumented test sections were constructed to assess rigid pavement performance
with CTPB compared to DGAB. The first test section had a DGAB layer only, while the second section had a CTPB
layer above the DGAB layer. Continual environmental data were collected and dynamic testing was conducted to
evaluate the load response of each test section.
The results from the environmental monitoring show that the CTPB section had higher strains and began to
experience higher edge deflections after a year of service. The moisture probes indicated the CTPB did not affect
subgrade moisture content. Dynamic truck load tests indicated the CTPB section had higher mid-slab strains and
greater transverse joint deflections. The higher strains and deflections in the environmental and dynamic tests were
attributed to the rigid CTPB layer, which caused a loss of support at the slab edges. This study found there were no
benefits from the CTPB, and that the rigid base layer had a negative impact on early-age pavement performance.
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