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All Journal Jurnal PROTEKSI (Proyeksi Teknik Sipil) Media Ilmiah Teknik Sipil Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Talenta Sipil Jurnal Ilmiah Teknik Sipil Transukma Serambi Engineering
Liliana Sahay
Universitas Palangka Raya
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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AGREGAT KASAR RINGAN BUATAN DARI LIMBAH PEMBAKARAN BATUBARA PLTU BUNTOI KABUPATEN PULANG PISAU DENGAN MENGGUNAKAN METODE GEOPOLIMER Liliana, Liliana; Meilawaty, Okta; Sahay, Abertun Sagit
Jurnal PROTEKSI (Proyeksi Teknik Sipil) Vol 4, No 1: Edisi Januari 2018
Publisher : Jurusan Teknik Sipil Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8.172 KB)

Abstract

Pembangunan PLTU dengan menggunakan batubara memberikan efek sampingan, limbah pembakaran batubara yang digunakan untuk pembangkit listrik adalah abu terbang. Abu terbang adalah material yang bersifat pozolan dan mengandung silika dan alumina dapat dilarutkan dengan menggunakan alkalis. Penggunaan  sodium silikat (Na2SiO3) yang berfungsi mempercepat reaksi polimerisasi sebagai aktifator dan  larutan alkalinya digunakan sodium hidroksida (NaOH) yang berfungsi untuk membantu proses pengikatan antar partikel. Tingkat pembentukan  polimer dipengaruhi oleh beberapa parameter, salah satunya adalah molaritas alkali (sodium hidroksida). Penelitian ini meninjau pengaruh molaritas/konsentrasi larutan NaOH. Larutan NaOH divariasikan yaitu 2M, 6M, 10M dan 14M, dengan rasio Sodium Silikat terhadap Natrium Hidroksida tetap yaitu 1,5. Perbandingan abu  terbang dengan alkali aktivator dilakukan variasi dari  70:30, 65:25 dan 60:40. Hasil yang diperoleh tahap pertama ini abu terbang limbah pembakaran dari PLTU Buntoi merupakan abu terbang tipe C, campuran yang memberikan nilai tertinggi sebesar 4,618 MPa adalah komposisi campuran dengan menggunakan rasio abu terbang terhadap alkali activator sebesar 60:40 dengan menggunakan konsentrasi larutan NaOH sebesar 14 M,  rasio  rasio Na2SiO3/NaOH sebesar 1,5. Agregat kasar  yang dihasilkan termasuk agregat kasar ringan dengan berat jenis kondisi kering sebesar  1,534 , berat volume kering padat sebesar 799 kg/cm3  dan penyerapan air sebesar 7,212%. Abu terbang berpotensi untuk dibuat sebagai agregat kasar ringan buatan.Kata Kunci: Agregat Kasar Ringan, Abu Terbang, Geopolimer, Kuat Tekan, Berat Jenis, Berat Volume dan Penyerapan Air
Kelayakan Abu Terbang PLTU Buntoi Sebagai Campuran Beton Geopolimer Dadang Suriyana; Liliana Sahay; Okta Meilawaty
Media Ilmiah Teknik Sipil Vol 9 No 2 (2021): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v9i2.2063

Abstract

The main basic ingredients needed for the manufacture of this geopolymer material are materials that contain a lot of silica and aluminia elements. The 1st stage test was carried out to determine the geopolymer paste with the maximum compressive strength at the ratio of NaOH to Na2SiO3 of 1; 1.5; 2; 2.5. The second stage of testing was carried out using a geopolymer paste with the highest compressive strength, namely the ratio of NaOH to Na2SiO3 of 2.5 with a compressive strength of 22.56 MPa. Based on the results of the compressive strength test, the maximum compressive strength at the age of 28 days is 7.64 MPa. The results of the compressive strength of concrete are much lower than the compressive strength of the paste, it shows that the paste does not bind too much with the aggregate. This is evidenced by the results of the compressive strength of conventional concrete which is much higher than that of geopolymer concrete using the same aggregate. With the results of the maximum compressive strength at the age of 28 days is 29.51 MPa.
PENGARUH VARIASI KADAR SERAT DAN RASIO PANJANG TERHADAP DIAMETER (L/D) SERAT PELEPAH SAWIT TERHADAP KUAT TEKAN DAN KUAT TARIK BELAH BETON SERAT Haryadi Saputra; Liliana Sahay; Frieda Frieda
Jurnal Kacapuri : Jurnal keilmuan Teknik Sipil Vol 4, No 2 (2021): JURNAL KACAPURI : JURNAL KEILMUAN TEKNIK SIPIL (Edisi Desember 2021)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al-Banjari Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jk.v4i2.6404

Abstract

Beton salah satu material konturuksi mampu memikul beban tekan, tetapi lemah dalam menerima beban tarik. Hal ini menyebabkan beton bersifat getas dan dapat. mengakibatkan keruntuhan mendadak sehingga serat digunakan pada beton. Tetapi bukan berarti beton tidak mengalami keruntuhan tarik. Dengan penambahan serat pelepah kelapa sawit yang merupakan bahan lokal, diharapkan dapat memperbaiki kelemahan beton. Variasi kadar atau presentase serat kelapa sawit yang ditambahkan ke dalam campuran beton adalah sebesar 1%, 1,5% dan 2% dari total berat semen beton silinder.  Hasil Penelitian kuat tekan, penambahan dan semakin besar l/d serat pelepah kelapa sawit tidak memberikan pengaruh yang signifikan terhadap peningkatan kuat tekan, kuat tekan tertinggi di peroleh pada rasio l/d = 50 dengan kadar serat 1% dengan nilai kuat tekan sebesar 14,33 MPa. Pada Pengujian kuat tarik belah beton tertinggi pada kadar serat 1% dengan rasio l/d = 50 nilai kuat tarik yang dihasilkan sebesar 2,10 MPa pada umur 7 hari. Kata kunci: beton serat, kuat tekan, pelepah kelapa sawit, kuat tarik belah
PENGARUH PEMANFAATAN ABU SEKAM PADI DAN ABU TERBANG PLTU BUNTOI SEBAGAI SEMEN KONVENSIONAL TERHADAP KUAT TEKAN Yunita Yunita; Okta Meilawaty; Liliana Liliana
Jurnal Kacapuri : Jurnal keilmuan Teknik Sipil Vol 4, No 1 (2021): JURNAL KACAPURI : JURNAL KEILMUAN TEKNIK SIPIL (Edisi Juni 2021)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al-Banjari Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jk.v4i1.5126

Abstract

Beton geopolimer adalah beton yang tidak menggunakan semen portland sebagai binder. Penelitian ini bertujuan untuk mengetahui komposisi yang dihasilkan dari penambahan abu sekam padi terhadap abu terbang PLTU Buntoi sebagai pengganti semen, sehingga didapat kuat tekan beton geopolimer yang maksimal. Metode yang digunakan adalah metode eksperimen, yaitu dengan membuat benda uji pasta geopolimer ukuran 20 mm × 40 mm. Dengan variasi penambahan abu sekam padi (0%,10%, 20%, 30% dan 40%) dari berat abu terbang. Hasil kuat tekan pasta geopolimer dengan persentase penambahan abu sekam padi sebanyak 40% dan abu terbang 60% menghasilkan kuat tekan rata-rata terbesar yaitu 16,99 MPa. Hasil tersebut digunakan sebagai binder dalam pembuatan beton geopolimer. Kuat tekan rata-rata beton geopolimer berdasarkan umur pengujian 3, 7, 14 dan 28 hari, dengan kuat tekan berturut-turut adalah 0,96 MPa, 1,87 MPa, 1,59 MPa, 1,58 MPa. Hasil tersebut menunjukan bahwa kuat tekan beton geopolimer lebih rendah dibandingkan dengan kuat tekan pasta geopolimer. Kata Kunci: Abu sekam padi, abu terbang, geopolimer, komposisi, kuat tekan
Sifat Mekanik Beton Berpori Dengan Material Agregat Buatan Dari Limbah Plastik PET: Mechanical Properties Of Porous Concrete With Artificial Aggregate Material From PET Plastic Waste M. Zulham; Liliana Liliana; Frieda Frieda
Media Ilmiah Teknik Sipil Vol. 10 No. 2 (2022): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v10i2.3593

Abstract

The use of plastic without any recycling action from human hands will result in the accumulation of plastic waste that damages the environment. Making plastic waste as an artificial aggregate is one way to overcome it. This research was conducted using an experimental method, namely by substituting natural aggregate with artificial aggregate of 58% in porous concrete. Aggregate:cement ratio used is 6:1 and 7:1 with variations of FAS used are 0.25 and 0.30. The tests carried out are compressive tests, tensile tests, and porosity tests. From the results of the compressive strength test, the maximum compressive strength was 6.700 kg/cm2 in the mixture used, namely 58% artificial aggregate: 42% natural aggregate, 6:1 aggregate:cement ratio, and 0.30 FAS. In the tensile strength test, the largest tensile strength was 0.802 kg/cm2 in the mixture used, namely 58% artificial aggregate: 42% natural aggregate, 6:1 aggregate:cement ratio, and 0.30 FAS. While the porosity test obtained the largest porosity of 5.04 in the mixture used, namely 58% artificial aggregate: 42% natural aggregate, 7:1 aggregate:cement ratio, and 0.25 FAS. The porous concrete in this study did not meet the specifications for the road body because it had a small compressive strength and a small tensile strength
POROSITAS BETON BERPORI DENGAN AGREGAT KASAR BUATAN DARI LIMBAH PLASTIK PET: POROSITY OF POROUS CONCRETE WITH ARTIFICIAL AGGREGATE FROM PET PLASTIC WASTE zulham zulham; Liliana Liliana; Frieda Frieda
Jurnal Ilmiah Teknik Sipil TRANSUKMA Vol. 5 No. 2 (2023): Jurnal Penelitian Transukma
Publisher : Program Studi Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Balikpapan

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Abstract

Pada penelitian ini digunakan limbah plastik berjenis PET (Polyethelene Terephatine) untuk menjadi bahan pembuatan agregat kasar buatan. Dipilih untuk menjadi agregat buatan karena agregat adalah bahan terbesar dalam pembentukan beton. Limbah plastik jenis PET (Polyethelene Terephatine) digunakan karena jumlahnya yang menumpuk dilingkungan sekitar. Hal ini dikarenakan banyaknya jumlah konsumsi air mineral botol kemasan dan kebiasaan buruk kebanyakan masyarakat Indonesia yang suka buang sampah sembarangan, juga kurangnya daur ulang limbah yang dilakukan. Agregat buatan ini nanti akan digunakan pada campuran untuk beton berpori. Penelitian ini dilakukan dengan metode eksperimental, dengan rasio agregat buatan dan agregat alami 58:42 %. Variabel lain yang digunakan pada penelitian ini adalah variasi FAS 0,25 dan 0,30, variasi rasio agregat semen 6:1 dan 7:1. Pada uji porositas diperoleh porositas terbesar 5,04 pada campuran 58% agregat buatan plastik: 42% agregat alami, FAS yang digunakan 0,25, dan rasio agregat: semen yang digunakan 7:1. Nilai porositas yang dihasilkan relatif rendah jika dibandingkan pada beton berpori pada umumnya.   In this study, PET (Polyethelene Terephatine) plastic waste was used to make artificial coarse aggregate. It was chosen to be an artificial aggregate because aggregate is the largest material in the formation of concrete. Plastic waste type PET (Polyethelene Terephatine) is used because the amount that accumulates in the surrounding environment. This is due to the large amount of bottled mineral water consumption and the bad habits of most Indonesians who like to litter, as well as the lack of waste recycling. This artificial aggregate will later be used in the mixture for porous concrete. This research was conducted by experimental method, with the ratio of artificial aggregates and natural aggregates 58:42%. Other variables used in this study were variations in FAS 0.25 and 0.30, variations in the ratio of cement aggregates 6:1 and 7:1. In the porosity test, the largest porosity was 5.04 in a mixture of 58% artificial plastic aggregate: 42% natural aggregate, 0.25 FAS used, and the ratio of aggregate: cement used was 7:1. The resulting porosity value is relatively low when compared to porous concrete in general.
ADDITION OF BENDRAT WIRE TO THE FIBER CONCRETE MIXTURE WITH ARTIFICIAL COARSE AGGREGATE MADE FROM TANGKILING CLAY, PALANGKA RAYA CITY Liliana; Abertun Sagit Sahay; Supiyan
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 13 No. 1 (2025): Journal Balanga Edisi Januari-Juni 2025
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v13i1.18852

Abstract

This study evaluates the physical properties, bulk density, water absorption, and specific gravity of artificial coarse aggregate derived from Tangkiling clay, Palangka Raya City, as well as the effect of wire fiber addition on the mechanical properties of fiber concrete. The artificial coarse aggregate was produced by firing clay at a temperature of 1000°C, resulting in rounded aggregate shapes. The bulk density of the aggregate in a loose condition was recorded at 889 kg/m³, while the water absorption was 13.69%. The specific gravity in dry and saturated surface-dry conditions was 1.260 and 1.385, respectively. The fiber concrete made with a combination of artificial coarse aggregate and wire fiber showed a hardened concrete bulk density ranging from 1890 – 2070 kg/m³. The optimal wire fiber concentration of 1.93% produced a maximum compressive strength of 20.399 MPa. However, statistical analysis revealed that the addition of wire fiber had no significant effect on increasing the compressive strength.
Substitusi Parsial dan Full Semen Konvensional pada Campuran Beton Geopolimer Berbahan Baku Arang Cangkang Kelapa Sawit Aprilia, Rina; Liliana, Liliana; Frieda, Frieda
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.658

Abstract

CKS charcoal is waste from burning CKS as operational fuel for Asphalt Mixing Plant (AMP). Hampangen clay and CKS charcoal are usually used as raw materials for non-conventional cement mixed with fine aggregate and coarse aggregate which are usually used in the Palangka Raya City environment. Several studies have been conducted by utilizing industrial by-products as non-conventional cement and made as a geopolymer concrete mixture. The geopolymer concrete mixture uses aggregates that are usually used in Palangka Raya City.This study aims to determine whether by adding conventional cement partially and fully to a mixture of non-conventional cement made from Hampangen clay and CKS charcoal can produce a geopolymer concrete mixture that is maximum in terms of the compressive strength of the concrete produced. The method used is the calculation of the mix design calculated using the ACI method (meaning in conditions of adding conventional cement fully - 100%). Based on the results of the study, it is known that the addition of PCC cement, the Gresik brand, in a mixture of geopolymer concrete made from CKS charcoal and Hampangen clay on the compressive strength of concrete is categorized as very strong.
Model Numerik dan Aplikasi Lapangan pada Peningkatan Daya Dukung Tanah Gambut yang Diperbaiki dengan Pasir serta Fondasi Kayu Plat Bersirip Baja Stephanus Alexsander; Fatma Sarie; Mohammad Ikhwan Yani; Liliana; Zadya Putra, Muhammad Ryan Febriza
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Building on peat soils often causes problems, one of which is significant settlement. Local people often use wooden foundations on peat soils, but they may not be able to support the load. This study proposes to modify the timber foundation by incorporating steel strip plates and sand amelioration, which will be simulated using software and subjected to laboratory testing to evaluate the effect of incremental loads on settlement. Peat soil samples were collected from Jalan Bukit Raya XIV, Palangka Raya for laboratory analysis of their physical and mechanical properties. Plaxis 2D software was used for the modeling analysis. Field loading continued until settlement reached the SNI 8460: 2017 allowable threshold of 2.5 cm. The soil test results were as follows: moisture content = 580.51%; fiber content = 33.12%; ash content = 4.64%; bulk density = 1.06 g/cm³; specific gravity = 1.79; cohesion = 0.0023 kg/cm²; angle of internal friction = 2°. The software analysis results indicate that modifying the hardwood base with three steel strip plates is the most effective method for load resistance. The load at 2.5 cm settlement is 340 kg from the load test and 350.5 kg from the Plaxis 2D analysis.
Co-Authors Abertun Sagit Sahay Aprilia, Rina Dadang Suriyana Fatma Sarie Frieda Frieda Frieda, Frieda Haryadi Saputra M. Zulham Mohammad Ikhwan Yani Okta Meilawaty Sahay, Abertun Sagit Stephanus Alexsander Supiyan, Supiyan Yunita Yunita Zadya Putra, Muhammad Ryan Febriza zulham zulham