Results 231 to 240 of about 4,684 (285)

Experimental study of dynamic resilient modulus of subgrade soils under coupling of freeze-thaw cycles and dynamic load

Journal of Central South University, 2020
Although the dynamic properties of subgrade soils in seasonally frozen areas have already been studied, few researchers have considered the influence of shallow groundwater during the freeze-thaw (F-T) cycles. So a multifunctional F-T cycle system was developed to imitate the groundwater recharge in the subgrade during the freezing process and a large ...
Yang Zhao, Zheng Lu, Yahui Duan
exaly   +3 more sources

Possible estimation of resilient modulus of fine-grained soils using a dynamic lightweight cone penetrometer

International Journal of Pavement Engineering, 2015
AbstractResilient modulus is an important parameter to characterise the resilient behaviour of pavement materials. Resilient modulus can be determined in the laboratory from repeated load triaxial test and is defined as the ratio of deviator stress to recoverable strain. Inherently, it is a challenge to perform repeated load triaxial tests as a routine
Bao Thach Nguyen, Abbas Mohajerani
core   +3 more sources

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
core   +4 more sources

Resilient Modulus and Dynamic Modulus of Warm Mix Asphalt

GeoCongress 2008, 2008
Warm Mix Asphalt (WMA) is produced at temperatures in the range of 30uF to 100uF (17uC to 56uC) lower than the traditional hot mix asphalt (HMA). It has a number of benefits including reducing energy consumption, emissions from burning fuels, and volatiles generated from the heated asphalt binder at the production plant at the paving site.
Shu Wei Goh, Zhanping You
openaire   +2 more sources

Comparing Resilient Modulus and Dynamic Modulus of Hot-Mix Asphalt as Material Properties for Flexible Pavement Design

Transportation Research Record: Journal of the Transportation Research Board, 2006
With the current trend toward developing mechanistic flexible pavement design and the need for more reliable design procedures, accurate characterization of hot-mix asphalt (HMA) properties is needed. Resilient and dynamic modulus tests were performed at five temperatures on two typical mixes used in the Commonwealth of Virginia to compare the test ...
Amara Loulizi, Gerardo W. Flintsch, Imad L. Al-Qadi, David Mokarem   +3 more
openaire   +2 more sources

Frequency-Dependence of Dynamic Resilient Modulus of Subgrade Clay: Mechanism and Modeling

International Journal of Civil Engineering
Yaowen Pei
exaly   +3 more sources

Resilient modulus characteristics of subgrade soil considering dynamic and static effects

International Journal of Pavement Engineering
The resilient modulus of the subgrade soil is an important parameter in pavement design that is affected by static and dynamic stresses. However, conventional models for predicting this resilient modulus do not distinguish between stress sources, which ...
Junhui Zhang, Junhui Zhang
exaly   +3 more sources

Study on Morphological Parameters of Hysteretic Curve of Dynamic Resilient Modulus

Journal of Highway and Transportation Research and Development (English Edition), 2020
The hysteresis curve of dynamic resilient modulus (DRM) is the load and deformation curve of asphalt mixture under dynamic loading, it can reflect the evolution rule of internal stress-train state with load and temperature. Based on viscoelastic theory, 3 morphological parameters could be determined: slope k of major axis, eccentricity e of ellipse ...
Jing-yu Liu, Yan-wu Yan, Zhao-hui Liu, You Huang   +3 more
openaire   +2 more sources

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
exaly   +2 more sources

Explainable machine learning-based prediction model for dynamic resilient modulus of subgrade soils

Transportation Geotechnics
Jianwen Hao
exaly   +3 more sources