Mechanistic Modeling of Unbound Granular Materials

Yohannes, Bereket; Hill, Kimberly; Khazanovich, Lev; University of Minnesota. Dept. of Civil Engineering

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Mechanistic Modeling of Unbound Granular Materials

2009-06-01
By Yohannes, Bereket ; Hill, Kimberly ; Khazanovich, Lev

[PDF-2.22 MB]

English

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Creators:

Yohannes, Bereket ; Hill, Kimberly ; Khazanovich, Lev

Yohannes, Bereket ; Hill, Kimberly ; Khazanovich, Lev Less -
Corporate Creators:

University of Minnesota. Dept. of Civil Engineering
Corporate Contributors:

Minnesota. Dept. of Transportation
Subject/TRT Terms:

[+]

Granular Materials Mechanistic-empirical Pavement Design Mechanistic Design Pavement Design
Publication/ Report Number:

MN/RC 2009-21
Resource Type:

Tech Report
Geographical Coverage:

United States
TRIS Online Accession Number:

1132448
Corporate Publisher:

Minnesota. Dept. of Transportation
Abstract:

Several tests are used for characterizing unbound granular materials for pavement applications. The California Bearing Ratio (CBR), resilient modulus (MR), Dynamic Cone Penetrometer (DCP) tests are three of the most common tests used for this purpose. The objective of this research is twofold. The first is to develop numerical models for these three tests. The second is to investigate relationship between basic material properties, boundary conditions, and test results, ultimately, to develop a physics-based correlation between these tests. A 3-D discrete element method (DEM) based model is adapted to simulate these tests. Good agreement is observed between the results of the simulations and sample numerical and experimental studies on granular materials. The DEM code is used to determine effects of aggregate shape, coefficient of friction, gradation, stiffness and other details on test results. The model is also used to investigate statistics of inter-particle interaction between the granular particles.
Format:

PDF
Funding:

(c) 89261 (wo) 8
Collection(s):

US Transportation Collection
Main Document Checksum:

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urn:sha256:d94fdc9aa2366176125c64d67dcaeee78eba7929b56cb08ccfcb0f26d147a959
Download URL:

https://rosap.ntl.bts.gov/view/dot/38796/dot_38796_DS1.pdf
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Mechanistic Modeling of Unbound Granular Materials

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