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Pages 78-79

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From page 78...
... 78 This research project involved an evaluation of the field performance of corrugated HDPE pipes manufactured with recycled materials and the development of proposed criteria for AASHTO materials and design standards based on the research. The key outcome of the research project was the development of a performance-based specification for pipes manufactured with recycled materials that was validated on full-scale pipes in both the field and the laboratory.
From page 79...
... 79 with a design stress of 3.4 MPa (500 psi) and temperature of 23°C, the minimum required single-point UCLS test value is 34 hours.

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