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Pengaruh Penggunaan Limbah Fly Ash dan Epoxy Resin Sebagai Bahan Stabilisasi Tanah Terhadap Daya Dukung Tanah di Jalan Irigas Palembang Ani Firda; Dimitri Yulianti
Jurnal Deformasi Vol. 7 No. 1 (2022): JURNAL DEFORMASI
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/deformasi.v7i1.7795

Abstract

ABSTRAK Tanah merupakan bagian yang penting dalam suatu konstruksi yang mempunyai fungsi menyangga konstruksi diatasnya, bahan penyusun tanah berupa mineral dan bahan organik. Tanah dasar dapat berupa tanah asli yang dipadatkan jika tanah aslinya baik. Setiap tahunnya volume kendaraan meningkat yang akan berdampak pada kerusakan jalan Irigasi Kota Palembang. Metode penelitian ini yaitu stabilisasi kimiawi dengan cara memperbaiki kondisi tanah yang telah dicampur dengan tanah asli dan stabilizing agent berupa campuran fly ash dan epoxy resin. Salah satu solusi yang dapat diterapkan untuk mengatasi permasalahan yaitu dengan menambahkan fly ash yang didapatkan dari limbah PT.PUSRI dan campuran epoxy resin, dengan variasi penambahan fly ash 10%, 15 % dan epoxy resin 25 %. Pengujian CBR dilakukan dengan metode unsoaked. CBR unsoaked dilakukan penambahan zat aditif ke sampel tanah asli dengan persentase tanah asli 0% + fly ash + campuran epoxy resin dengan persentase penambahan sebesar 10 %, dan 15 % untuk fly ash terhadap persentase berat tanah, sedangkan untuk epoxy resin persentase penambahannya 25 % terhadap persentase berat tanah asli. Nilai CBR didapatkan bahwa penambahan fly ash 10 % dan epoxy resin 25 % merupakan nilai CBR optimum, sedangkan pada penambahan fly ash 15% dan epoxy resin 25 % mengalami penurunan nilai CBR, tetapi nilainya masih diatas nilai CBR tanah asli. Untuk hasil pengujian triaxial diketahui nilai kohesi pada STA 1 yaitu 0.197 kg/cm2, pada STA 2 yaitu 0.118. kg/cm2 dan nilai sudut geser (θ) pada STA 1 yaitu 7 dan pada STA 2 yaitu 6.  ABSTRACT Soil is an important has the function of supporting the construction. Every year the volume of vehicles increases which will have impacting road damage on Irigasi Street in Palembang. The method used in this study is chemical stabilization by improving the condition of the soil that has been mixed with the original soil and a stabilization in the form of a mixture of fly ash and epoxy resin. One solution that can be applied to overcome these problems is to add fly ash obtained from PT. PUSRI waste and a mixture of epoxy resin, with the addition of variations of fly ash 10%, 15%, and epoxy resin by 25%. CBR Unsoaked was done by adding additives to the soil sample with a percentage of 0% + fly ash + a mixture of epoxy resin with an addition percentage of 10% and 15% for fly ash to the percentage of soil weight, while for epoxy resin the percentage addition was 25% to percentage of soil weight The optimum CBR value can be obtained by adding 10% fly ash and 25% epoxy resin, while the addition of 15% fly ash and 25% epoxy resin will make the CBR value can decrease, but this value is still above the original soil CBR value. The results of this triaxial test can be seen from the value of cohesion at STA 1 is 0.197 kg/cm2, at STA 2 is 0.118. kg/cm2 and shear angle at STA 1 of 7° and at STA 2 of 6°.
Pengaruh Kombinasi Fly Ash Lokal dan Silica Fume terhadap Kuat Lentur Beton untuk Perkerasan Jalan Luthfiyyah Ulfah; Dimitri Yulianti; Rizki Prasetya Person; Feridianda Al Farrij; Yobi Marial H; Naila Taqiyyah; Shifa Salsabila N
Jurnal Sipil Terapan Vol. 4 No. 2 (2026): November: Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v4i2.1229

Abstract

This study analyzes the effect of combining local fly ash from PT Bukit Asam (PTBA) and PT Pupuk Sriwijaya (PUSRI) with silica fume addition on the flexural strength of concrete supporting the green pavement concept. Cement was substituted with 6% fly ash in PTBA, PUSRI, and 50:50 combination variations, along with 5% silica fume as an additive. Experimental testing used beam specimens (15×15×60 cm) evaluated at 7, 28, and 35 days according to SNI 4431:2011. Results show that concrete with 5% silica fume without fly ash achieved the highest flexural strength of 6.453 MPa at 35 days, while the 50:50 PTBA-PUSRI combination produced 6.173 MPa, higher than normal concrete (5.480 MPa). The higher pozzolanic reactivity of PUSRI fly ash contributed to the improved flexural performance of the blended mixture. The 50:50 PTBA-PUSRI fly ash combination with 5% silica fume is recommended as the optimal formulation for sustainable green road pavement applications.