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Questions tagged [pavement]

21 questions
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3 answers

Design Roller Compacted Concrete Pavement Section

I have been asked to consider using RCC instead of traditional PCC on an upcoming project. For a rough order of magnitude estimate, can I assume that the pavement section design will be similar? I know that the mix design and construction methods…
Dan
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Per the ME Pavement Design Guide MOP, Section 5.3.6, Eq 5-18b, how is p02 assumed if not entered in Pavement ME?

The MOP, equation 5-18b calls for p02, which the MOP describes as the "Percent passing the 0.02 mm sieve". I assume that this is the percent passing for the subgrade. We only input down to the p200 for our subgrades. For example, our clay entry…
Justin Schenkel
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2 answers

Tiled/block pavement used to pave high traffic roadway?

We're normally paving the high-traffic road with concrete or asphalt. While for sidewalk/garden, we use pave block/tiles (either concrete or else) Common reason is because pave block/tiles doesn't seems comfortable for high speed vehicle, because it…
gijoe
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3
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1 answer

Why is the JPCP CTE default value in Pavement ME 4.9 when the ME Pavement Design Guide Manual of Practice recommends 5.5 for unknown?

The default value for JPCP CTE in v2.5.5 (and v2.3) is 4.9. However, per Table 10-5 on page 152 of the ME Pavement Design Guide Manual of Practice recommends 5.5 if unknown. Moreover, there is only one aggregate type with recommended CTE below…
Justin Schenkel
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3
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1 answer

k-value Rigid Pavements

Chapter 4, Part 3 of the MEPDG (Mechanistic Empirical Pavement Design Guide) states "The 'effective' dynamic k-value represents the compressibility of all pavement layers beneath the PCC slab and base course". However, the Manual of Practice for…
Luis Ramirez
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What's sort of "sidewalk" pavement is this?

I was recently walking down a road when a car came my way (I'm an inveterate jaywalker). I moved over to the sidewalk, only to notice it clearly wasn't a sidewalk at all. The pavement looked like this: The paving stones are embedded into and…
Wasabi
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What does "Percent Trucks in Design Lane" input represent?

In the AASHTO Pavement ME program version 2.6, for the traffic input "Percent Trucks in Design Lane" is the default value of 95% based on the maximum percent of trucks that can occur in the design lane or the average percent of trucks that ride in…
Nicolet
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Pavement ME, Version 2.5.5 and PCC Longitudinal Cracking?

In Pavement ME, Version 2.5.5, why is there a tab for "PCC Longitudinal Cracking" calibration factors since longitudinal cracking prediction is not part of the current Pavement ME?
Mary Jane
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What LOS is used by AASHTOWare ME for the traffic capacity cap option?

In AASHTOWare ME, when using the traffic capacity cap option, what is the LOS that the software assumes for this calc? Is it "F"? (Not covered in the Help function)
John Andreae
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What is the type of pavement defect and how to address the issue?

Attached image is from a very high water table and high salinity area. What is the type of pavement defect and how to address the issue?
Yousuf
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How to calculate load bearing capacity of a floating pavement?

Given tire load of a vehicle, how do I calculate load bearing capacity of a non-reinforced concrete pavement floating on a layer of heat insulation material, which is on the RC base? I can't figure out how to use (or if I can use) soil mechanics…
civic
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How to use MERRA data in Pavement ME Version 2.6 for rigid design?

We are testing out Pavement ME, Version 2.6 on our server, and we can't figure out how to import the MERRA Climate Data for rigid pavement designs. We have followed the steps outlined in the help menu within the program, but it still is not working…
Mary Jane
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Pavement Mechanistic-Empirical Design application (v2.3) - Rehabilitation Flexible Calibration Factors

In v2.3 of the software, we noticed that in the rehabilitation flexible calibration tab, there are no standard deviation inputs for thermal cracking. They do appear in the new flexible rehabilitation tab. Was standard deviation for thermal cracking…
Chadley08
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What is the "allowable number of axle-load to failure equation" used in Pavement ME Design?

How is the allowable number of axle-load to failure equation actually used in the software? Is there any documentation regarding the calculation of the tensile strains?
Chadley08
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How can we model a full depth reclamation (FDR) layer with emulsion (wet FDR layer) in a pavement design?

So far, I have only been able to model dry layers as I've only been able to represent the FDR layer with one modulus value.
Chadley08
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