KARAKTERISTIK HRS-WC DENGAN AGREGAT HALUS DISUBSTITUSI PASIR PANTAI
| Main Authors: | Purbanto, Raka, Thanaya, I Nyoman Arya, Saraswati, AA Istri Rara Anggita |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Department of Civil Engineering, Udayana University
, 2023
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| Online Access: |
https://ojs.unud.ac.id/index.php/jits/article/view/100391 https://ojs.unud.ac.id/index.php/jits/article/view/100391/49459 |
Daftar Isi:
- Ketersediaan pasir alam semakin terbatas, sehingga pasir pantai dapat menjadi alternatif pengganti untuk campuran aspal, dimana aspal mengalami penuaan. Tujuan penelitian ini yaitu menganalisis karakteristik pasir pantai dan campuran HRS-WC disubstitusi pasir pantai pada Kadar Aspal Otimum (KAO). Penelitian diawali dengan pengujian material dan pembuatan benda uji untuk memperoleh KAO. Pada KAO dilaksanakan substitusi abu batu dengan 50% dan 100% pasir pantai berdasarkan volume pada agregat halus lolos 2,36mm tertahan 0,075mm. Diperoleh karakteristik pasir pantai secara umum tidak jauh berbeda dengan pasir alam, namun nilai angularitas pasir pantai tidak memenuhi karena permukaan pasir pantai sangat halus. Karakteristik HRS-WC dengan substitusi pasir pantai sebanyak 50% serta 100% pasir pantai diperoleh nilai stabilitas marshall 2269,757kg dan 2654,942kg; flow 1,062mm dan 2,777mm; MQ 2156,120kg/mmdan 957,308kg/mm; VIM 5,570% dan 4,898% (mendekati nilai minimum 4%); VMA 19,826%; 18,398%; VFB 71,908%; 73,375%. Karakteristik Marshall sampel dikondisikan STOA, LTOA 2 hari dan LTOA 5 hari memenuhi spesifikasi. Nilai pengujian uji cantabro pada kondisi normal, STOA, LTOA 2 hari dan LTOA 5 hari dengan nilai 50% pasir pantai: 4,284%, 3,942%, 1,977%, 1,451%, dan dengan 100% pasir pantai: 6,067%; 5,758%; 4,101%; dan 3,366% (< nilai rekomendasi 16%). Secara umum karakteristik campuran memenuhi spesifikasi, hanya campuran dengan 100% pasir laut, VIMnya mendekati minimum.
- The availability natural sand is increasingly limited, thus beach sand can be as an alternative substitute to fine aggregate for asphalt mixture, where asphalt can undergo ageing. The purpose of this study was to analyze the characteristics of beach sand and HRS-WC mixture substituted with beach sand at Optimum Asphalt Content (OAC). The research begins with materials testing and manufacture of samples to obtain OAC. At OAC substitution of stone ash with 50% and 100% of beach sand was done based on volume on fine aggregate passing 2.36mm retained on 0.075mm. It was obtained that the characteristics of beach sand in general was not far different from natural sand, however. the angularity value of the beach sand was unfulfilled because the surface of the beach sand is extremely smooth. The characteristics of HRS-WC with beach sand substitution at 50% and 100% was obtained with marshall stability value of 2269,757kg and 2654,942kg; flow 1.062mm and 2.777mm; MQ 2156,120kg/mm and 957,308kg/mm; VIM 5.570% and 4.898% (close to minimum value); VMA 19.826% and 18.398%; VFB 71.908% and 73.375%. The marshall characteristics of the samples conditioned on STOA, LTOA 2 days and LTOA 5 days met the specification. The Cantabro test values under normal conditions, STOA, LTOA 2 days and LTOA 5 days with 50% beach sand were: 4.284%, 3.942%; 1.977%, 1.451%; and with 100% beach sand were: 6.067%; 5.758%; 4.101%; and 3.366% (< the recommended value of 16%). In general the characteristics of the mixture met the specification, just on the mixture with 100% sand beach, the VIM was close to minimum value