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Download e-book for kindle: Constructing Smooth Hot Mix Asphalt (HMA) Pavements by M. Stroup-Gardiner

By M. Stroup-Gardiner

ISBN-10: 0803134606

ISBN-13: 9780803134607

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Additional resources for Constructing Smooth Hot Mix Asphalt (HMA) Pavements

Sample text

This range is the middle step of the suggested pay function presented as Figure 9. 0 blanking band are found below in Table 8. _= 30 ,,e 25 Ill o. , m Q. "" . . 0) 24 CONSTRUCTING SMOOTH HOT MIX ASPHALT The suggested pay function, presented as Figure 9, developed from Table 8 becomes the following. 5 (5) Penalty: Percent Pay = (-0. 0 blanking band ] 30 BOWMAN ET AL. 1% Notice that the slope o f the bonus and penalty portions of the incentive diagram are equal. The result is that the same monetary increment is provided as a bonus or penalty for a unit increase or decrease in the PI value.

Although there is the intangible benefit of being one of the states with the smoothest pavements the best justification is tangible dollar benefits to the Department and to the Citizens of Arizona. To show specific numbers a cost benefit analysis of a typicalproject was done. 08 m/km increase in smoothness value per year. 56 m/km. 72 m/km will have its next project in 10 years. 56 m/km, as a result of the inclusion of a smoothness specification, will need its next project in 12 years. Inclusion of the smoothness specification has, in this example, extended the pavement life by two years.

In DELTON ET AL. ON HIGHWAY TYPE AND DESIGN STRATEGY 37 category 3 contractor G is also the best, with project smoothness value 12% less than that of the worst contractor. The smoothness variability of contractors G's projects is also relatively small. Possibly as the result of contractor G's good quality giving a bidding advantages, 42% of category 1 projects and 78% of category 3 project contracts were awarded to contractor G. 10 9 8 7 O 6 5 t.. 4 3 O r 2 r~ 1 * Category 1 / Category 3 1 1 0 1993 I I I I I I I 1994 1995 1996 1997 1998 1999 2000 2001 Year Figure 3 - Variability of Average Smoothness among Projects Table 6 - Smoothness Comparison by Contractors Category Contractor No.

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Constructing Smooth Hot Mix Asphalt (HMA) Pavements by M. Stroup-Gardiner


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