PDH Engineer     PE PDH
PDH Online

Design and Construction Procedures for Concrete Overlay and Widening of Existing Pavements


Quiz Questions

1.In the field of pavement analysis and design, liquid, solid, and layer can be assume, with foundations being the most common.
Solid
Liquid
Layer
None of the above
2. The effect of the soil beneath the composite pavement was modeled using a ____________ foundation.
Nishikawa
Winkler
Ingram
None of the above
3.Design and Construction Procedures for Concrete Overlay and Widening of Existing Pavements

The picture in the figure above is an example of a ____________________.

Stress gage reading
Strain gage reading
4.

The PCA/ACPA design method is technically an analysis procedure that allows for the prediction of the number of loads to fatigue failure for a given UTW configuration. The models used are mechanistic-empirical in nature.

True
False
5.The effect of interface condition is of particular interest in investigating the behavior of the composite pavement, as previous studies have shown that it has a significant effect on the behavior of.
the whitetopping pavement system
point to point interface elements
friction gap elements
none of the above
6.Whitetopping layers are traditionally designed and analyzed based on the assumption that a bond exists the concrete and the HMA layers.
Above
Under
Between
None of the above
7. The vertical separation of adjacent slabs that is due to many factors, including poor load transfer and loss of support is known as:
Joint faulting
Joint spalling
Corner cracking
None of the above
8.

At the end of the analysis cycle, the agency and user costs will be calculated for the _____________ period.

Prior
Current
Later
None of the above
9. In order to account for temperature effects during load testing, temperature of the AC layer must be monitored. An alternative method to determine the temperature of the AC using the _________________ was developed by Witczak.
Mean monthly air temperature
Standard deviation
Range of the air temperature
Median air temperature
10.A large portion of the total deflection can be attributed to the ____________ compression of the AC layer under the 9000 lb load.
Vertical
Horizontal
11.The AI equation is a function of:
mix characteristics
mix temperature
loading frequency
All of the above
12.The effective plate theory was developed by Iaonnides et al. as a way to evaluate the contribution to the modulus when a concrete base is placed ___________ a stabilized base.
Under
On top of
13.Thicker whitetopping overlays were found to improve pavement performance by ________________ deflections and maximum stresses that were induced in the composite pavement under static loading.
Lowering
Increasing
14.

The __________ of the widening units has a significant effect on reducing the deflection.

Width
Depth
15. ______________ PCC overlay and widening units do provide a viable and economical alternative in the field of overlay rehabilitation strategies for narrow highway pavements.
Thin
Thick
16. Composite pavements with fully bonded and unbonded layers exhibited very ___________ behavior.
Different
Similar
17.The existing design methods for thin overlays contain much of the same theory and are tailored for the specific needs of the user.
True
False
18.The Iowa method is designed to use tools available to the state highway department staff in the form of as-built plans, traffic projections, coring, deflection testing, and visual distress surveys to form the inputs to the design process. Much of the Colorado procedure __________ been incorporated into this process.
Has
Has not
19.Existing Iowa research indicates __________ in joint performance between joints that were air blasted after sawing and joints that were not cleaned.
A significant difference
No difference
20.The Center for Portland Cement Concrete Pavement Technology (PCC Center) is housed at the Center for Transportation Research and Education (CTRE) at _______________.
Iowa State University
University of North Carolina
Penn State
University of Texas