Author: Donald A. MaddenPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 78
Book Description
Correlation of Frost Depth, Thaw Periods and Pavement Deflection to Spring Load Restrictions. Final Report
Author: Donald A. MaddenPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 78
Book Description
The Effects of Winter Haul on Low Volume Forest Development Roads
Author: Palmer UtterbackPublisher:
ISBN:
Category : Forest roads
Languages : en
Pages : 56
Book Description
Improved Spring Load Restriction Guidelines Using Mechanistic Analysis
Author: Jill M. OvikPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 98
Book Description
Predicting the Effects of Freezing and Thawing on Pavement Support
Author: Craig H. BensonPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 76
Book Description
The objective of this study was to develop a method to predict the timing of weight limits on secondary highways in Wisconsin. Two types of weight limits are of interest: overloads when the pavement is frozen and weight restrictions during thawing and post-thawing recovery period. To meet this objective, three sections of secondary highways with flexible pavements were instrumented and monitored to determine how freezing, thawing, and post-thaw recovery affect pavement stiffness. Data collected from these sites were used to develop a computer model (UWFrost) that can be used to predict seasonal changes in the support capacity of pavements.
Guidelines for Spring Highway Use Restrictions
Author: Mary S. RutherfordPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 334
Book Description
This report describes a survey of current practice as well as analysis performed to develop guidelines for agencies which need load restrictions during spring thaw periods. The results show for a range of locations in the U.S. and Canada that the average load restrictions applied is about 44 percent. The analysis performed in the study tends to confirm that level of load restriction. Further, it was found for the assumed conditions that a minimum load restriction level (if any load reduction is needed) is about 20 percent. Load restrictions greater than 60 percent are generally not warranted for the range of cases studied. An air temperature based criterion (Thawing Index) was developed which can be used to estimate when to apply and remove load restrictions.
Highway Research Abstracts
Author: The Evaluation of Frost Related Effects on Pavements
Author: Jo A. LaryPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 27
Book Description
This summary report describes the field data and analysis techniques used to evaluate the effect of winter ground freezing on WSDOT pavement structures during two thaw periods. Six field test sites were selected in District 2 for deflection testing and in situ instrumentation as well as materials sampling. The results show that a principal mechanism which necessitates load restrictions for some of the WSDOT pavement structures is the weakened condition of the base course during thawing periods. Presented in the report is a single revised load restriction table and criteria to use in determining the time and location for establishing load restrictions.
Government Reports Announcements & Index
Author: Government Publications Checklist
Author: Maine State LibraryPublisher:
ISBN:
Category : State government publications
Languages : en
Pages : 304
Book Description
Author: