Bonding in cementitious materials with asphalt-coated particles: Part II - Cement-asphalt chemical interactions

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• 作者：Alexander S. Brand^a ; ^{abrand2@illinois.edu} ; ^{alexander.brand@nist.gov} ; Jeffery R. Roesler^b ; ^{jroesler@illinois.edu}
• 关键词：Reclaimed asphalt pavement ; Concrete ; Interfacial transition zone ; Bond improvement ; Interfacial bond test ; Surface free energy
• 刊名：Construction and Building Materials
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：130
• 期：Complete
• 页码：182-192
• 全文大小：1346 K
• 卷排序：130

文摘

Asphalt cohesion is the dominant failure mode between asphalt and cement. Chemical treatments to RAP can increase interfacial bond energy between asphalt and cement. Higher ITZ porosity is the reason for reduced modulus in concrete with RAP aggregates. Asphalt cohesion failure is the primary reason for reduced mechanical properties in concrete with RAP.