Scholarlink

The quality of transportation infrastructure significantly influences economic and social advancement of a nation. Moisture damage poses a serious threat to pavement durability, affecting structural integrity. Warm Mix Asphalt (WMA) technology provides a sustainable solution by lowering hazardous emissions during the manufacturing of conventional Hot Mix Asphalt (HMA). Developing durable pavements resistant to moisture damage, even in aged and unaged conditions, is crucial. Rubberized asphalt mixtures exhibit superior physical and strength properties but require higher compaction temperatures than conventional mixes. This study explores the combined benefits of rubberized asphalt and WMA technology using cashew nut shell liquid (CNSL), a sustainable, green additive with excellent antistripping properties. Marshall mix design was adopted for the preparation of Rubberized Hot Mix Asphalt (RHMA) and Rubberized Warm Mix Asphalt (RWMA) specimens. CNSL, added to natural rubber modified bitumen (NRMB) at an optimal dosage of 2% by weight of bitumen, enhanced the performance of RWMA. RWMA exhibited 9% and 19% higher Marshall retained stability indices than RHMA under unaged and aged conditions, respectively, demonstrating excellent resistance to moisture-induced failures. Statistical analysis using R-Programming and ANOVA confirmed the significant impact of mix type on moisture resistance, validating the experimental findings and supporting sustainable pavement development.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Moisture Sensitivity Characteristics of Aged and Unaged Rubberized Warm Mix Asphalt with Cashew Nut Shell Liquid as a Sustainable Organic Additive

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Margret Sherin Joseph,
  • Jaison James

摘要

The quality of transportation infrastructure significantly influences economic and social advancement of a nation. Moisture damage poses a serious threat to pavement durability, affecting structural integrity. Warm Mix Asphalt (WMA) technology provides a sustainable solution by lowering hazardous emissions during the manufacturing of conventional Hot Mix Asphalt (HMA). Developing durable pavements resistant to moisture damage, even in aged and unaged conditions, is crucial. Rubberized asphalt mixtures exhibit superior physical and strength properties but require higher compaction temperatures than conventional mixes. This study explores the combined benefits of rubberized asphalt and WMA technology using cashew nut shell liquid (CNSL), a sustainable, green additive with excellent antistripping properties. Marshall mix design was adopted for the preparation of Rubberized Hot Mix Asphalt (RHMA) and Rubberized Warm Mix Asphalt (RWMA) specimens. CNSL, added to natural rubber modified bitumen (NRMB) at an optimal dosage of 2% by weight of bitumen, enhanced the performance of RWMA. RWMA exhibited 9% and 19% higher Marshall retained stability indices than RHMA under unaged and aged conditions, respectively, demonstrating excellent resistance to moisture-induced failures. Statistical analysis using R-Programming and ANOVA confirmed the significant impact of mix type on moisture resistance, validating the experimental findings and supporting sustainable pavement development.