リサイクルされたアスファルトと粉末ゴムで改造されたアスファルトの性能を調査する
Hamza Shams1, Hanif Ullah2, Yanjun Qiu3
1Highway Engineering Key Lab of Sichuan Province, School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China. hamza.shams97@gmail.com.
Scientific reports
|September 1, 2025
まとめ
再利用されたアスファルト舗装 (RAP) とクラムラバー (CR) を使用した持続可能な舗装修復は,道路の性能を大幅に改善します. RAPとCRを組み合わせることで, ローティング抵抗と張力強度が向上し, 柔軟な舗装に費用対効果の高いソリューションを提供します.
科学分野:
- 土木工学
- 材料科学
- 持続可能な建設
背景:
- 道路の寿命を伸ばすには 舗装の修復が不可欠です
- アスファルト混合物にリサイクルアスファルト舗装 (RAP) とクラムラバー (CR) を組み込むことは,経済的にも環境的にも利点をもたらします.
- これらの材料は 柔軟な舗装の耐性や 疲労や水分による損傷を高めることができます
研究 の 目的:
- 柔軟な舗装の性能に対する RAP と CR の組み合わせ効果を評価する.
- RAPとCRの利用の持続可能性と費用対効果を評価する.
- 主要な舗装性能指標に対する RAP と CR の影響を分析する.
主な方法:
- 4つの高速道路の舗装区画が研究のために選択されました.
- セクションにはRAP (0%と15%) とCR (0%と7%) の割合が異なる.
- 採取された舗装コアの実験室分析は,性能指標を決定するために行われました.
主要な成果:
- RAP と CR を含めると,歩道の性能が著しく改善されたことが示されました.
- 15% の RAP と 7% の CR の混合物で,ルーティングの深さは最大 41. 35% 減少した.
- RAPとCRの組み合わせにより,間接的な牽引強度が17.93%増加し,弾性モジュールは38.23%増加しました.
結論:
- RAP,CR,または両方の組み合わせを使用すると,舗装の性能が効果的に向上します.
- RAPとCRを組み込んだ改造ビトゥーム結合剤は,舗装の修復に持続可能で費用対効果の高いアプローチを提供します.
- この研究では,RAPとCRが柔軟な舗装の耐震性,張力,回復力を向上させるという利点が確認されています.
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