Effect of Treated Coconut Shell and Fiber on the Resilient Modulus of Double-layer Porous Asphalt at Different Aging

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Ting, T.L.^1 ; Ramadhansyah, P.J.^1 ; Norhidayah, A.H.^1 ; Yaacob, H.^1 ; Hainin, M.R.^1 ; Wan Ibrahim, M.H.^2 ; Jayanti, D.S.^3 ; Abdullahi, A.M.^4

Faculty of Civil Engineering, Department of Geotechnics and Transportation, Universiti Teknologi Malaysia, Johor Bahru

81310, Malaysia^1

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor Bahru

86400, Malaysia^2

Faculty of Agricultural, Syiah Kuala of University, Banda Aceh

23111, Indonesia^3

Faculty of Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih, Selangor Darul Ehsan

43500, Malaysia^4

关键词: Absorption abilities;    Coconut fiber;    Coconut shells;    Double layers;    Pavement industry;    Porous asphalts;    Resilient modulus;    Waste products;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012065/pdf
DOI  :  10.1088/1755-1315/140/1/012065

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Coconut shell (CS) and coconut fiber (CF) are new waste products that have been of growing interest recently in the highway asphalt pavement industry. This study investigated the effect of CS and CF on the resilient modulus of double-layer porous asphalt (DLPA). CS aggregate 5 mm in size was substituted for the DLPA at 5%, 10%, and 15% by weight, while CF was added to the asphalt at 0.3% and 0.5% by weight. Before mixing with other aggregates, the CS and CF were treated with 5%wt Sodium hydroxide (NaOH) to reduce their water absorption ability. The samples were prepared via the Marshall method. The result shows that DLPA with 10% CS aggregate has better resilient modulus under 25 °C for unaged and aged samples compared with the other substitution percentages. However, the sample with CF has a lower resilient modulus because the amount of CF has increased. In general, the substitution of 10% CS provided better resilient modulus among the other percentages.