Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Discrete Element Analysis on Aggregate Breakage of Marginal Unbound Road Materials
https://orcid.org/https://orcid.org/0000-0002-2449-4573
https://orcid.org/https://orcid.org/0000-0002-0596-228X
https://orcid.org/https://orcid.org/0000-0002-1041-0244
https://orcid.org/https://orcid.org/0000-0001-7674-8582
Ensuring adequate aggregate resistance to crushing and abrasion is crucial for good performance of unbound road layers. It is particularly important when incorporating marginal aggregates in road construction with unbound granular materials (UGMs). In this study, aggregate crushing in UGMs is investigated experimentally with uniaxial compression tests and numerically with discrete element method (DEM). A DEM model of UGMs subjected to uniaxial monotonic compression is implemented in a commercial DEM software, incorporating granular mechanics-based particle contact and breakage laws. Based on comparison with the experimental findings, it is shown that the implemented model captures the UGMs behavior well including aggregate breakage characteristics. The model is used furthermore to evaluate aggregate crushing in UGMs subjected to cyclic loading conditions representative for unbound road layers of low volume roads. The feasibility of using the developed DEM approach for evaluating the implications of using marginal UGMs in unbound road layers and for optimizing structural design of those layers is discussed.
Discrete Element Analysis on Aggregate Breakage of Marginal Unbound Road Materials
https://orcid.org/https://orcid.org/0000-0002-2449-4573
https://orcid.org/https://orcid.org/0000-0002-0596-228X
https://orcid.org/https://orcid.org/0000-0002-1041-0244
https://orcid.org/https://orcid.org/0000-0001-7674-8582
Ensuring adequate aggregate resistance to crushing and abrasion is crucial for good performance of unbound road layers. It is particularly important when incorporating marginal aggregates in road construction with unbound granular materials (UGMs). In this study, aggregate crushing in UGMs is investigated experimentally with uniaxial compression tests and numerically with discrete element method (DEM). A DEM model of UGMs subjected to uniaxial monotonic compression is implemented in a commercial DEM software, incorporating granular mechanics-based particle contact and breakage laws. Based on comparison with the experimental findings, it is shown that the implemented model captures the UGMs behavior well including aggregate breakage characteristics. The model is used furthermore to evaluate aggregate crushing in UGMs subjected to cyclic loading conditions representative for unbound road layers of low volume roads. The feasibility of using the developed DEM approach for evaluating the implications of using marginal UGMs in unbound road layers and for optimizing structural design of those layers is discussed.
Discrete Element Analysis on Aggregate Breakage of Marginal Unbound Road Materials
https://orcid.org/https://orcid.org/0000-0002-2449-4573
https://orcid.org/https://orcid.org/0000-0002-0596-228X
https://orcid.org/https://orcid.org/0000-0002-1041-0244
https://orcid.org/https://orcid.org/0000-0001-7674-8582
Ensuring adequate aggregate resistance to crushing and abrasion is crucial for good performance of unbound road layers. It is particularly important when incorporating marginal aggregates in road construction with unbound granular materials (UGMs). In this study, aggregate crushing in UGMs is investigated experimentally with uniaxial compression tests and numerically with discrete element method (DEM). A DEM model of UGMs subjected to uniaxial monotonic compression is implemented in a commercial DEM software, incorporating granular mechanics-based particle contact and breakage laws. Based on comparison with the experimental findings, it is shown that the implemented model captures the UGMs behavior well including aggregate breakage characteristics. The model is used furthermore to evaluate aggregate crushing in UGMs subjected to cyclic loading conditions representative for unbound road layers of low volume roads. The feasibility of using the developed DEM approach for evaluating the implications of using marginal UGMs in unbound road layers and for optimizing structural design of those layers is discussed.
Discrete Element Analysis on Aggregate Breakage of Marginal Unbound Road Materials
Carter, Alan (Herausgeber:in) / Vasconcelos, Kamilla (Herausgeber:in) / Dave, Eshan (Herausgeber:in) / Etikan, M. Kaan (Autor:in) / Jelagin, Denis (Autor:in) / Partl, Manfred N. (Autor:in) / Olsson, Erik (Autor:in)
International Symposium on Asphalt Pavement & Environment ; 2024 ; Montreal, QC, Canada
14th International Conference on Asphalt Pavements ISAP2024 Montreal ; Kapitel: 119 ; 723-728
24.12.2024
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Contact stiffness affecting discrete element modelling of unbound aggregate granular assemblies
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