Abstract
As an effort to improve the subgrade, some construction projects use petrasoil material to increase the carrying capacity of the soil, for example in the construction of the "Improvement of the Tabarfane-Hokmar Soil Road (Chemical Petrasoil)” in Aru sub-district. Previous research on increasing the carrying capacity of the soil have been done using petrasoil, but the results indicated no soil carrying-capacity increase. On the contrary, another study successfully used fly ash on swamps to increase the soil carrying-capacity. Based on these two studies, the current research combined the two additives, namely, fly ash and petrasoil, to increase soil carrying-capacity and get an optimal additive composition. Some tests have been carried out, i.e. the index properties test, compaction test, and CBR test using AASHTO and ASTM standards. Fly ash mixtures were prepared in several composition percentages, i.e. 0%, 10%, 15%, 20%, while the mixture of petrasoil and water is 1 kg: 1000 liters. The results showed that there was an increase in soil bearing capacity based on the largest CBR value in the variation of mixed soil with petrasoil and fly ash by 20% which is equal to 19.7% of the CBR value of original soil without additives.
Highlights
As an effort to improve the subgrade, some construction projects use petrasoil material to increase the carrying capacity of the soil, for example in the construction of the "Improvement of the TabarfaneHokmar Soil Road (Chemical Petrasoil)” in Aru sub-district
Previous research on increasing the carrying capacity of the soil have been done using petrasoil, but the results indicated no soil carryingcapacity increase
The results showed that there was an increase in soil bearing capacity based on the largest California Bearing Ratio (CBR) value in the variation of mixed soil with petrasoil and fly ash by 20% which is equal to 19.7% of the CBR value of original soil without additives
Summary
Setiap pembangunan harus memperhatikan kondisi tanah pendukung yang ada agar bangunan yang berdiri diatasnya memiliki kekuatan yang baik. Beberapa penelitian telah dilakukan dalam usaha meningkatkan stabilitas tanah diantaranya dengan memanfaatkan fly ash sebagai material untuk stabilisasi tanah (Indrayani et al, 2018; Mina dkk, 2016; Indera dkk, 2016). Sebagaimana program pemerintah untuk memanfaatkan sampah atau limbah yang ada (3 R; Reduce, Reuse, dan Recycle), maka digunakanlah fly ash dalam upaya peningkatan daya dukung tanah, namun fly ash ini dicampurkan dengan bahan tambah lain yaitu petrasoil seperti yang telah dilakukan oleh (Herius, dkk, 2019; Indrayani, et al, 2020) yang menambahkan petrasoil pada tanah untuk meningkatkan daya dukung tanah, mengingat telah banyak penelitian yang menggunakan fly ash untuk meningkatkan nilai daya dukung tanah, sehingga dicoba dengan menambahkan bahan lain bersamaan dengan fly ash, untuk mendapatkan pengaruh penambahan campuran fly ash dan petrasoil terhadap daya dukung tanah. Penelitian lain yang memanfaatkan limbah industri sebagai upaya pengelolaan lingkungan sebagai bahan aditif untuk meningkatkan stabilitas tanah dilakukan oleh Gunarti, dkk (2020) yang memanfaatkan limbah Dust Sand Foundry; dan Gunarti, dkk (2020) yang memanfaatkan limbah Dry Dust Collector sebagai bahan stabilisasi tanah lempung
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
