EVALUATION OF STRUCTURAL DEGRADATION IN CONCRETE PAVEMENT ON CIRCULAR ACCELERATED PAVEMENT TESTING FACILITY WITH FWD BACK-ANALYSIS

• NISHIZAWA Tatsuo

  石川工業高等専門学校 環境都市工学科

• TERADA Masaru

  一般財団法人土木研究センター 道路研究部

• YABU Masayuki

  国立研究開発法人土木研究所 道路技術研究グループ 舗装チーム

• KOYANAGAWA Masashi

  東京農業大学 地域環境科学部

• TAKEUCHI Yasushi

  東京農業大学 地域環境科学部

Bibliographic Information

Other Title

• 円形走行路載荷試験におけるコンクリート舗装の長期的な荷重支持性能のFWDによる評価

Abstract

 In this study, test sections of concrete pavement were constructed on the circular accelerated pavement testing (APT) facility and subjected to 5.2 million of 49kN equivalent standard wheel loads (ESWL). The test pavement has sections with and without steel mesh in concrete slab and asphalt interlayer under the slab to investigate the effect of these devices. During the loading, FWD tests were conducted periodically and the structural changes were evaluated with FWD back-analysis, which considers the degradation process simulated with 3DFEM models. The analysis revealed that interior parts of the slabs did not significantly degrade, while transverse cracks exhibited severe degradation. In spite of those severe degrading conditions, the stress at the slab bottom of joints did not significantly increased and the slabs have kept sound for more than 3 million of ESWLs.

Journal

• Journal of Japan Society of Civil Engineers, Ser. E1 (Pavement Engineering)

  Journal of Japan Society of Civil Engineers, Ser. E1 (Pavement Engineering) 77 (1), 39-52, 2021

  Japan Society of Civil Engineers

Keywords

• test concrete pavement
• steel mesh
• asphalt interlayer
• circular APT
• degradation model
• FWD
• 3DFEM
• back-analysis

Details

• CRID: 1390290473083898752
• NII Article ID: 130008131428
• DOI: 10.2208/jscejpe.77.1_39
• ISSN: 21856559
• Web Site: https://www.jstage.jst.go.jp/article/jscejpe/77/1/77_39/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed