Results 211 to 220 of about 4,857 (264)

Modeling the Resilient Modulus of Soils

2020
Various mathematical models appear in the literature for expressing the relationship between resilient modulus and stress state. In this paper, four mathematical models that are oftentimes cited in the literature are examined and evaluated for their ability to relate resilient modulus and stress.
B. Ni, T.C. Hopkins, L. Sun, T.L. Beckham   +3 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Resilient Modulus for Unsaturated Unbound Materials

Road Materials and Pavement Design, 2011
ABSTRACT The suitability of the current resilient modulus test protocol (NCHRP 1-28A) for its application to unsaturated soils was assessed. Modifications to the stress state conditions of the protocol are necessary due to the axis-translation needed during the test when measuring matrix suction.
Carlos E Cary, Claudia E Zapata
openaire   +1 more source

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.
Andrew Lacroix, A. Ardalan Mosavi Khandan, Y. Richard Kim   +2 more
openaire   +1 more source

Weighting Factor for Seasonal Subgrade Resilient Modulus

Transportation Research Record: Journal of the Transportation Research Board, 1998
Subgrade resilient modulus is highly dependent on water content, which can vary significantly with a number of seasonal environmental factors. Because the determination of seasonal resilient modulus is cumbersome, it is difficult to include environmental factors in pavement design.
Yun Guan, Eric C. Drumm, N. Mike Jackson
openaire   +1 more source

Subgrade Resilient Modulus Correction for Saturation Effects

Journal of Geotechnical and Geoenvironmental Engineering, 1997
Mechanistic design methods for flexible pavement require the specification of the resilient modulus Mr for each soil subgrade encountered in the pavement project.
Eric C. Drumm, Jason S. Reeves, Mark R. Madgett, William D. Trolinger   +3 more
openaire   +1 more source

Resilient Modulus Test — Triaxial Cell Interaction

2003
During developmental work by the Strategic Highway Research Program (SHRP, 1987–1992) and the Federal Highway Administration (FHWA, 1993-present), it was recommended that knowledge and assessment of triaxial equipment and sample interaction be correctly applied to both test command and data reduction routines for the accurate measurement of resilient ...
RL Boudreau, J Wang
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Resilient Modulus Testing for Pavement Components

2003
Description Nineteen peer-reviewed papers address the latest issues affecting the resilient modulus test and use of the test results. Resilient modulus indicates the stiffness of a soil under controlled confinement conditions and repeated loading.
GN Durham, WL DeGroff, WA Marr
openaire   +1 more source

Resilient Modulus Models for Compacted Cohesive Soils

Transportation Research Record: Journal of the Transportation Research Board, 2004
Three-parameter models have been used to represent the effects of confining and shear stresses on the value of resilient modulus. A new generation of such models allows better characterization of the variation of resilient modulus at low deviator stress. These models can be extended to incorporate the effects of soil type, soil structure, and the soil
Phillip S. K. Ooi, A. Ricardo Archilla, Kealohi G. Sandefur   +2 more
openaire   +1 more source