RELATIONSHIPS BETWEEN STIFFNESS AND VFA BASED ON THE INDIRECT TENSILE STIFFNESS MODULUS TEST USING NOTTINGHAM ASPHALT TESTER

NAT-ITSM試験に基づくアスファルト混合物のスティフネスとVFAの関係

This study investigated the relationships between stiffness and VFA based on the indirect tensile modulus test using Nottingham Asphalt Tester. The asphalt concrete specimens prepared in this study are dense-graded asphalt concrete and coarse-graded asphalt concrete based on the Japanese standards. The set of the specimen are prepared by the different compaction energy. The test results indicate that the magnitude of the stiffness is strongly dependent on VFA, temperature and the difference of asphalt binder. The practical model proposed by Neves & Correia (2005) is good agreement with the laboratory test results.　本研究は，理論的設計法を用いてアスファルト舗装の構造設計を行う際に，舗装の順解析の主要な材料パラメータとなるアスファルト混合物のスティフネスの実務的な設定方法の検討を今後の目的にしている．そこで，わが国において適用されている密粒度アスファルト混合物と粗粒度アスファルト混合物を対象として，Nottingham Asphalt Testerを使用したIndirect Tensile Stiffness Modulus試験方法（NAT-ITSM試験方法）による室内試験を実施した．本試験では，アスファルト混合物の締固め度の違いによる飽和度（以下，VFA），温度，およびバインダ種がスティフネスに及ぼす影響の把握を目的とした．本論文では，NAT-ITSM試験方法による一連のスティフネス室内試験結果を示すとともに，スティフネスとVFAの関係を表す実験式を検討した結果, Neves & Correia が提案する実験式¹⁾は，筆者らの室内試験結果をよく表現できることがわかった．

• Record URL:
  https://doi.org/10.2208/jscejpe.72.I_77
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=RELATIONSHIPS%20BETWEEN%20STIFFNESS%20AND%20VFA%20BASED%20ON%20THE%20INDIRECT%20TENSILE%20STIFFNESS%20MODULUS%20TEST%20USING%20NOTTINGHAM%20ASPHALT%20TESTER&author=S.%20WATANABE&author=T.%20ISHIGAKI&author=S.%20OMOTO&author=K.%20KOUGO&publication_year=2016
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/21856559
• Authors:
  • WATANABE, Shinichi
  • Ishigaki, Tsutomu
  • OMOTO, Shinobu
  • KOUGO, Kenichi
• Publication Date: 2016

Language

• English
• Japanese

Media Info

• Media Type: Web
• Pagination: pp I_77-I_85
• Serial:
  • Journal of Japan Society of Civil Engineers, Ser. E1 (Pavement Engineering)
  • Volume: 72
  • Issue Number: 3
  • Publisher: Japan Society of Civil Engineers
  • ISSN: 2185-6559
  • Serial URL: https://www.jstage.jst.go.jp/browse/jscejpe/-char/en

Subject/Index Terms

• TRT Terms: Asphalt concrete; Stiffness; Tension tests
• Identifier Terms: Nottingham Asphalt Tester
• Geographic Terms: Japan
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01633658
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Apr 28 2017 4:51PM