Viscoelastic Analysis of Flexible Pavements Embedded with Controlled Low-Strength Material Bases Using Finite Element Method
- DOI
- 10.2991/icmmse-17.2017.33How to use a DOI?
- Keywords
- CLSM, FEM, Viscoelatic Analysis, Flexible Pavements
- Abstract
This paper presents finite element analysis of 4-layered flexible pavements embedded viscoelastic asphalt concrete (AC) top layer and controlled low-strength materials (CLSM) sublayers as well as graded crushed stone subgrades layers. Two-dimensional deformation assumption is employed. Time-dependent stress-strain relations are treated using Laplace transform based on correspondence principle. Collocation method is employed for inversion of Laplace transformed results into time-domain results. A typical layered pavement is analyzed in which relaxation modulus of top viscoelastic asphalt layer is expressed in Prony series. Two kinds of CLSMs, i.e., CLSM-B80/30% and CLSM-B130/30% are compared with graded crushed stones and AC used for base materials. Time-domain responses of vertical displacement, vertical stress and horizontal stress at the bottom of AC layer are compared. The steady state vertical settlements using CLSM bases (B80/30% and B130/30%) are smaller than that using graded crushed stones even considering viscoelastic behavior of asphalt layer and show to be good materials employed as base substitutes for graded crushed stone in flexible pavement design.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Wen-Ling Huang AU - Her-Yung Wang AU - Li-Jeng Huang PY - 2017/04 DA - 2017/04 TI - Viscoelastic Analysis of Flexible Pavements Embedded with Controlled Low-Strength Material Bases Using Finite Element Method BT - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017) PB - Atlantis Press SP - 214 EP - 219 SN - 2352-5401 UR - https://doi.org/10.2991/icmmse-17.2017.33 DO - 10.2991/icmmse-17.2017.33 ID - Huang2017/04 ER -