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 Performance Evaluation of Geogrid in Flexible Pavement Using Mechanical‑Empirical Design Approach
Tác giả hoặc Nhóm tác giả: Hery Awan Susanto, Shih‑Hsien Yang, Mai Anh Duc
Nơi đăng: International Journal of Pavement Research and Technology (Scopus, Q1); Số: xx;Từ->đến trang: 10.1007/s42947-021-00030-4;Năm: 2021
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
In the past decade, numerous studies have shown that incorporating geogrid in the pavement could efectively improve the pavement performance. The major beneft of using geogrid in the fexible pavement is to improve its rutting performance as the result of the reinforcement function of geogrid. Mechanical-empirical pavement design guide (MEPDG) developed to provide the pavement performance prediction throughout its design life. However, MEPDG is not able to consider the efect of incorporating geogrid in the fexible pavement. In this study, a design procedure was proposed to obtain an equivalent geogrid pavement structure, which satisfes MEPDG design input requirements. In this procedure, a 2D fnite element method was used to simulate geogrid reinforced and non-reinforced pavement structures. The iteration process based on stress–strain analysis of fnite element model (FEM) used to obtain an equivalent structure input for MEPDG. The geogrid reinforced rutting performance can be predicted by analyzing the equivalent geogrid structure using MEPDG. A signifcant life improvement of pavement with geogrid was observed compared to pavement without geogrid. The results showed that the incorporating of geogrid in asphalt pavement layer signifcantly reduce the rutting of pavement layer, thus will contribute to extension of pavement service life.
ABSTRACT
In the past decade, numerous studies have shown that incorporating geogrid in the pavement could efectively improve the pavement performance. The major beneft of using geogrid in the fexible pavement is to improve its rutting performance as the result of the reinforcement function of geogrid. Mechanical-empirical pavement design guide (MEPDG) developed to provide the pavement performance prediction throughout its design life. However, MEPDG is not able to consider the efect of incorporating geogrid in the fexible pavement. In this study, a design procedure was proposed to obtain an equivalent geogrid pavement structure, which satisfes MEPDG design input requirements. In this procedure, a 2D fnite element method was used to simulate geogrid reinforced and non-reinforced pavement structures. The iteration process based on stress–strain analysis of fnite element model (FEM) used to obtain an equivalent structure input for MEPDG. The geogrid reinforced rutting performance can be predicted by analyzing the equivalent geogrid structure using MEPDG. A signifcant life improvement of pavement with geogrid was observed compared to pavement without geogrid. The results showed that the incorporating of geogrid in asphalt pavement layer signifcantly reduce the rutting of pavement layer, thus will contribute to extension of pavement service life.
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