Optimalisasi Campuran Fly Ash, Bottom Ash, dan Semen Untuk Lapis Pondasi (Improving Subgrade)

  • Ari Nely Mak'sudah Teknik Sipil Unisnu Jepara
  • Yayan Adi Saputro Teknik Sipil Fakultas Sains dan Teknologi UNISNU Jepara
  • Decky Rochmanto Teknik Sipil Fakultas Sains dan Teknologi UNISNU Jepara
Keywords: Keywords: Stability, Optimization, UCS Value, CBR, Foundation Layer.

Abstract

PLTU Tanjung Jati B Jepara causes excessive environmental pollution, namely fly ash and bottom ash (FABA) waste. So this waste is very suitable to be used as a stabilizing mixture for ordinary embankment soil. The purpose of this study was to find the optimal value for the foundation layer, using an experimental method to examine the free compressive strength of the soil stabilizing material. By using a mixture of 50% FA + 50% BA and 60% FA + 40% BA with the percentage of cement addition of 3%,5%,7%,9%,11%,15%. The results showed that the highest stress value occurred in the mix design 50% FA+50% BA with a percentage of 9% cement, the highest stress increase was at a percentage value of 4,943 kg/cm2 during a 3 day curing period. With the highest field density value at T3 of 1,553 gr/cm3. With the results of the highest soil density R value at T3 of 123.247%. The UCS and CBR values ​​for the best comparison for the foundation layer increased with the addition of bottom ash composition and PCC content in the mixture.

References

Abadi T.C. (2007). Perbandingan Hasil Stabilisasi dengan fly ash dan Semen Pada Tanah Ekspansif Cikampek. Jurnal Teknik Sipil Institut Teknologi Nasional. Vol. 7 No. 2. hal. 131 – 143.

Biljones Lumban Gaol, 2019, Pemanfaatan Fly Ash pada Subgrade Lapisan Perkerasan Jalan Dengan Tambahan Semen, Sumatera Utara.

Daniel Stephanes Siregar, 2019, Stabilisasi Tanah Lempung dengan Kapur Tohor (CaO) dan Bottom Ash Ditinjau Dengan Uji Tekan Bebas dan Nilai California Bearing Ratio, Sumatera Utara.

Leliana, 2015, Pengaruh Penambahan Fly ash Terhadap Nilai Kuat Tekan Bebas Pada Tanah Lempung Ekspansif, di Daerah Magetan Jawa Timur.

Rama Indera K, Enden Mina, Taufik Rahman, 2016, Stabilisasi Tanah Dengan Menggunakan Fly Ash dan Pengaruh Terhadap Nilai Kuat Tekan Bebas, Studi Kasus Jalan Raya Bojonegara, Kab. Serang.

Rama Indera K , Enden Mina , Akbar Prasetio Hutomo, 2017, Stabilisasi Tanah Menggunakan Fly Ash Terhadap Nilai Kuat Tekan Bebas Berdasarkan Variasi Kadar Air Optimum. Studi Kasus Jalan Raya Bojonegara, Kab. Serang.

Tengku, Alfian, Yosi, 2019, Kajian Pengaruh Pemanfaatan Limbah Faba (Fly Ash dan Bottom Ash) Pada Konstruksi Lapisan Base Perkerasan Jalan, Riau.

Published
2022-05-18