Change search
ReferencesLink to record
Permanent link

Direct link
Implementation and evaluation of an HMA fracture mechanics based design module
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

A thickness design module for flexible pavements, based on the HMA fracture mechanics framework, has been developed in order to design against premature failure caused by cracking. The HMA fracture mechanics based design module has been evaluated by designing typical Swedish pavements under typical Swedish climate and loading conditions and comparing the results with a reference design framework. The integrated set of material models predicting the necessary material strength- and creep compliance parameters for crack resistance evaluation within this framework has been evaluated against a number of field cores tested.

Results show that the design module developed is able to accurately predict cracking in Swedish flexible pavements, indicating that the principles behind the design procedure are fundamental and that the material models used are able to make qualitative predictions of the individual material properties used to estimates a mixtures’ resistance to cracking.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology , 2011. , v, 62 p.
Series
, Research report. Avd. för vägteknik, Kungl. Tekniska högskolan, 2011:07
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-33748ISBN: 978-91-7501-010-6OAI: oai:DiVA.org:kth-33748DiVA: diva2:417187
Presentation
2011-05-20, B 25, KTH, Brinellvägen 23, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20110518

Available from: 2011-05-18 Created: 2011-05-16 Last updated: 2014-01-22Bibliographically approved
List of papers
1. Evaluation of a novel calibrated-mechanistic model to design against fracture under Swedish conditions
Open this publication in new window or tab >>Evaluation of a novel calibrated-mechanistic model to design against fracture under Swedish conditions
2012 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, Vol. 13, no 1, 49-66 p.Article in journal (Refereed) Published
Abstract [en]

Sweden has initiated the development of a new calibrated-mechanistic pavement design procedure to replace the current mechanical-empirical pavement procedure entitled “PMS Objekt.” The first phase was focused on the implementation and calibration of the vi scoelastic fracture mechanics framework entitled “HMA Fracture Mechanics”, developed at the University of Florida. This paper outlines the implementation and calibration of a new pavement design module for Sweden that is based on the HMA fracture mechanics framework. Both the developed design module, as well as the reference model used for calibration (PMS Objekt) are presented in this paper. The results in thickness design after calibration of the design module indicate that the framework is clearly applicable for common Swedish conditions and design standards.

Keyword
top-down cracking, Florida cracking model, IDT, PMS Objekt, machanistic pavement design
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-33800 (URN)10.1080/14680629.2011.651838 (DOI)000305177400005 ()2-s2.0-84863609638 (ScopusID)
Note
QC 20120705Available from: 2011-05-18 Created: 2011-05-18 Last updated: 2014-01-22Bibliographically approved
2. Evaluation of the predictive models used in the new swedish mechanistic-empirical design module
Open this publication in new window or tab >>Evaluation of the predictive models used in the new swedish mechanistic-empirical design module
2012 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, Vol. 13, no 2, 300-311 p.Article in journal (Other academic) Published
Abstract [en]

In order to perform thickness design of flexible pavements based on the HMA fracture mechanics framework prior to construction, the tensile strength and creep power law parameters of the mixture has to be determined. As samples are normally not available in the design stage, these properties will have to be modelled rather than determined in a laboratory. This paper evaluates material models based on the relationship between dynamic (complex) modulus and creep compliance in order to predict tensile strength and creep power law parameters for a mixture. For this evaluation, fourteen field sections from the United States have been used for verification and the results indicate that the crack resistance of a mixture can indeed be estimated without a development of extensive empirical relations between mixture properties and crack-resistance.

Keyword
top-down cracking, mechanistic pavement design, material modelling, IDT, Creep compliance, dissipated creep strain energy
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-33802 (URN)10.1080/14680629.2012.677993 (DOI)000305761500007 ()2-s2.0-84863622971 (ScopusID)
Note
Updated from submitted to published.QC20120724Available from: 2011-05-18 Created: 2011-05-18 Last updated: 2014-01-22Bibliographically approved

Open Access in DiVA

fulltext(234 kB)490 downloads
File information
File name FULLTEXT02.pdfFile size 234 kBChecksum SHA-512
e41fe42693dfa6cfce073ee9bd133f8a7115a5ea21ef06e5777628d4c9f51a9de01de2dd6a3bce2653599cc6f024632a0954805b2b3fa1e16a790003e692c773
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Gullberg, David
By organisation
Highway and Railway Engineering
Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 490 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 285 hits
ReferencesLink to record
Permanent link

Direct link