Results 211 to 220 of about 5,268 (261)

Backcalculation of dynamic modulus from resilient modulus test data

Canadian Journal of Civil Engineering, 2011
For the past few decades, the stiffness of asphalt material has been commonly characterized by means of resilient modulus. However, the resilient modulus is not a fundamental material property, and hence, the concept of resilient modulus has been subsequently diminished in the latest Mechanistic-Empirical Pavement Design Guide (MEPDG).
Hyung Suk Lee, Jaeseung Kim
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Predicting the Resilient Modulus of Asphalt Concrete from the Dynamic Modulus

Transportation Research Record: Journal of the Transportation Research Board, 2007
The NCHRP 1-37A Guide for Mechanistic-Empirical Design of New and Rehabilitated Design Structures introduces the dynamic modulus as the material property to characterize asphalt concrete. This is a significant change from the resilient modulus used in the previous AASHTO pavement design guide. This paper presents an analytical method of calculating the
Andrew Lacroix, A. Ardalan Mosavi Khandan, Y. Richard Kim   +2 more
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Resilient Modulus Backcalculation Techniques for Track

Performance Confirmation of Constructed Geotechnical Facilities, 2000
The layer moduli of track substructure components are important factors in the evaluation of track condition and estimation of maintenance costs. Layer moduli can be estimated from in-situ tests such as the cone penetration test (CPT); however, for layers of open graded aggregate, such as railway ballast with large individual particles, the results of ...
Theodore R. Sussmann, Ernest T. Selig
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Resilient Modulus of Kentucky Soils

2001
In recent years, the American Association of State Highway Transportation Officials (AASHTO) has recommended the use of resilient modulus for characterizing highway materials for pavement design. This recommendation evolved as of a result of a trend in pavement design of using mechanistic models, which are based on the theory of elasticity (layered ...
Hopkins, Tommy C., Beckham, Tony L., Sun, Charlie, Ni, Bixian   +3 more
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Resilient Modulus of Cement-Stabilized Phosphogypsum

Journal of Materials in Civil Engineering, 1996
This paper presents the findings of a preliminary study of the dependence of resilient modulus of cement-stabilized phosphogypsum on various material parameters. In particular, the dependence of the resilient modulus on cement content, dry unit weight, moisture content, and curing time was determined.
M. I. Pericleous, J. B. Metcalf
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A simple chart for the prediction of resilient modulus

Géotechnique, 1976
Considerable effort has been put into the task of obtaining characterization of pavement materials, and the laboratory equipment necessary for this task is both expensive and complex. This note presents a method of overcoming this problem for partially saturated cohesive subgrades.
R. W. Kirwan, M. S. Snaith
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An Investigation on Resilient Modulus of Bituminous Mixtures

2019
IRC:37-2012 suggests to use resilient modulus as an input parameter in the design of bituminous pavements in India. IRC:37 specifies the values of resilient modulus at different temperatures for Bituminous Concrete (BC) and Dense Bituminous Macadam (DBM) mixes with various grades of unmodified and modified binders.
S. Deepa, J. Murali Krishnan
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Extracting Damping Information from Resilient Modulus Tests

Journal of Materials in Civil Engineering, 2017
AbstractIn addition to the dynamic moduli, the damping properties of the different pavement layers are required by most algorithms used for modeling the dynamic responses of pavement caused by movi...
Pereira, Claudio, Nazarian, Soheil, Correia, A. Gomes   +2 more
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Resilient Modulus Variations with Water Content

2003
Resilient modulus (MR) variations with water content were carefully examined for three subgrade soils—lean clay, clayey sand, and clayey gravel. For each soil type, four MR tests were performed at the following water contents: 2 to 3% dry of optimum, at optimum; 2 to 3% wet of optimum; and at full backpressure saturation.
J Li, BS Qubain
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Modulus of resilience as predictor for clinical wear of restorative resins

Dental Materials, 1992
Eight posterior restorative resins were tested with respect to flexural strength, modulus of elasticity, and modulus of resilience. The mechanical properties were correlated to the two-year results of clinical wear tests. Linear relationships were found between flexural strength and clinical wear and between modulus of resilience and clinical wear.
Peutzfeldt, A., Asmussen, E.
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