Stabilisasi Tanah Ekspansive dengan Menggunakan Tanah Putih untuk Tanah Dasar di Daerah Godong Kabupaten Grobogan Jawa Tengah

Wardani, Sri Prabandiyani Retno; Muhrozi, Muhrozi; Setiaji, Andi Retno Ari; Riwu, Danny R

doi:10.14710/mkts.v24i1.16275

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…Di Indonesia, penghasilan fly ash maupun bottom ash meningkat setiap tahun nya berbanding lurus dengan adanya konsumsi batu bara sebagai bahan baku di industri pembangkit listrik. Saat ini di pabrik-pabrik semen abu terbang banyak digunakan untuk bahan tambah pada campuran bahan pembuatan semen (Wardani, 2008). Sebelum digunakan sebagai bahan campuran beton terdapat 2 pengujian untuk fly ash, yaitu berat jenis dan lolos saringan no.200.…”

Section: Fly Ashunclassified

Fly Ash PLTU Sumber Alam Sekurau Kalimantan Utara sebagai Binder Beton Geopolimer

Hertianisya¹,

Prasetya²

2023

CESJ

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Geopolymer concrete uses pozzolanic materials such us fly ash to replace the role of cement. This study aims to design a geopolymer concrete mixture to obtain a compressive strength value based on the age or variation of the concrete mix and identify the effect of variations in alkaline activator solution on the compressive strength of geopolymer concrete. Fly ash which reacts with alkaline activator liquid in a ratio of 50:50, funcitions as a binder, where the alkaline activator used in this study is Na2Si03, and NaOH concentration of 10M with the test variable used is variation one at a ratio of 50:50; variation two at a ratio of 60:40 and variation three at a ratio of 66,67:33,33, while the filler composition and binder were 75:25. In this research, 27 samples were made of cylindrical specimens by testing the compressive strength of concrete at the age of 7, 21 and 28 days. The mixing method used in this research was the wet mixing method. Based on the research result, the average compressive strength at seven days for each variation was 11,533 Mpa; 9,300 Mpa and 12,367 Mpa. At 21 days each variation in a row was 9,300 Mpa; 11,567 Mpa and 14,800 Mpa. Each variation’s concrete with 28 days of age successively was 10,500 Mpa; 14,400 Mpa and 12,533 Mpa. In addition, the variation in the alkaline activator solution between Na2Si03, and NaOH affects the results of the compressive strength of geopolymer concrete. Keywords: alkaline activator, geopolymer concrete, fly ash, compressive strength ABSTRAK: Beton geopolimer merupakan beton yang menggunakan bahan pozzolan seperti fly ash untuk menggantikan peran semen. Tujuan dari penelitian ini yaitu membuat desain campuran beton geopolimer sehingga mendapatkan nilai kuat tekan berdasarkan umur ataupun variasi campuran beton dan mengidentifikasi pengaruh dari variasi larutan alkali aktivator terhadap kuat tekan beton geopolimer. Fly ash yang bereaksi dengan cairan alkali aktivator dengan perbandingan 50:50 berfungsi sebagai bahan pengikat, dimana alkali aktivator yang digunakan dalam penelitian ini yaitu Na2SiO3 dan NaOH konsentrasi 10M dengan variabel pengujian yang digunakan ialah variasi 1 pada rasio 50:50; variasi 2 pada rasio 60:40 dan variasi 3 pada rasio 66,67:33,33 sedangkan komposisi filler dan binder sebesar 75:25. Pada penelitian ini dibuat benda uji berbentuk silinder sebanyak 27 sampel dengan pengujian kuat tekan beton pada umur 7, 21 dan 28 hari. Metode percampuran yang digunakan dalam penelitian ini yaitu pencampuran dengan metode basah. Berdasarkan hasil penelitian diperoleh rata-rata kuat tekan pada umur 7 hari setiap variasi secara berturut-turut yaitu 11,533 Mpa; 9,300 Mpa dan 12,367 Mpa. Pada umur 21 hari setiap variasi secara berturut-turut yaitu 9,300; 11,567 Mpa dan 14,800 Mpa. Beton dengan umur 28 hari pada setiap variasi secara berturut-turut yaitu 10,500 Mpa; 14,600 Mpa dan 12,533 Mpa. Selain itu adanya variasi dalam larutan alkali aktivator antara Na2SiO3 dan NaOH mempengaruhi hasil dari nilai kuat tekan beton geopolimer. Kata Kunci: alkali aktivator, beton geopolimer, fly ash, kuat tekan

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Section: Fly Ashunclassified

Fly Ash PLTU Sumber Alam Sekurau Kalimantan Utara sebagai Binder Beton Geopolimer

Hertianisya¹,

Prasetya²

2023

CESJ

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“…Kopi, setelah mengalami proses penyeduhan merupakan limbah yang sulit penguraiannya dan berkategori limbah domestik. Limbah padat domestik yang penguraiannya tergolong sulit, sifatnya padat namun lolos air [16]. Dengan demikian, ampas kopi dapat digunakan sebagai media material stabilitas tanah berjenis montmorillonite.…”

Section: Pendahuluanunclassified

Penelitian Stabilitas Struktur Tanah Lempung Bersifat Monmorillonite Menggunakan Limbah Ampas Kopi

2020

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In the field of construction, the land is a media base of the core of a building. The soil structure, which consists mainly of clay in its component, has montmorillonite properties. The level of soil stability that is montmorillonite is not good enough for the support of building infrastructure. This study uses coffee grounds waste and variations of 5%, 10%, 15%, and 20% in montmorillonite soil. In the soil stability test using montmorillonite soil mix specimens with coffee grounds waste, the content weight, consistency limit, and soil compaction tests were conducted. On the results of this study, the structure of the native soil categorized as montmorillonite with adding coffee pulp on additions varied to a maximum of 20%. The Liquid Limit value rises to 43%. The Plastic Limit value increased to 31.64% so that the plastic index could rise to 11.36 %. When the compaction test with the condition of the solid specimen is perfect, the dry volume of the original soil is 6.72 gr/cm 3. After adding coffee pulp waste by 20%, the bare amount increases to 10.56 gr/cm3.Dalam bidang konstruksi, tanah adalah suatu media pijakan inti dari sebuah bangunan. Struktur Tanah yang sebagian besar terdiri dari lempung didalam komponennya, memiliki sifat monmorillonite. Tingkat stabilitas tanah yang bersifat montmorillonite terbilang kurang bagus terhadap daya topang infrastruktur bangunan. Penelitian ini menggunakan limbah ampas kopi pada variasi penambahan 5%, 10%, 15% dan 20% pada tanah montmorillonite. Pada uji stabilitas tanah dengan menggunakan benda uji mix tanah montmorillonite dengan limbah ampas kopi, dilakukan Uji Berat Isi, Batas konsistensi (Atterberg Limit) dan Pemadatan Tanah (Proctor). Pada hasil penelitian struktur tanah asli yang dikategorikan montmoroillonite, setelah ditambah ampas kopi pada penambahan variasi maksimal sebesar 20%, nilai Liquid Limit naik menjadi 43% dan nilai Plastic Limit mengalami kenaikan menjadi 31,64%, sehingga index plastic dapat mengalami peningkatan menjadi 11,36%. Saat uji pemadatan dengan kondisi benda uji padat sempurna, berat volume kering tanah asli sebesar 6,72 gr/cm3 dan setelah ditambahkan limbah ampas kopi sebesar 20% mengalami peningkatan berat volume kering menjadi 10,56 gr/cm3.

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“…Reference from the previous testing states that, "the physical and mechanical properties of expansive soils get better with the addition of white soil with a maximum amount of 2.5% of the dry weight of the soil", (Wardani, Muhrozi, Setiaji, & Riwu, 2018). The conclusion from the following understanding is a step to improve soil classification value can be done by combining or mixing some organic additives, which in the following studies use a combination of Limestone and Fly-ash.…”

Section: Introductionmentioning

confidence: 98%

The Effect of Addition of Limestone Powder and Fly – Ash on Land Classification

Candra

Cahyo

Mahardana

2019

scj

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The land is one of the absolute functions in every continuity of the activities of all living things on Earth. The issue of the low soil resilience type of montmorillonite activity indeed remains a problem in construction activities titled construction. Limestone and Fly-Ash is a formulation to change the classification value of montmorillonite soil activity in the following paper compilation research. Soil classification is an effort of the land grouping which is intended to separate the use of land carrying capacity which is more complex for each use of soil structure. The value of the basic soil activity used is 1.3, obtained from the plastic index calculation of 32.56 %divided by the sieve gradation value is smaller than the sieve number 200 by 25.7 %. Thus it shows that the soil structure used for testing is a type of Montmorillonite activity. with the addition of limestone powder additive materials and fly-ash showed activity value const soil structure to be late. In a combination of 5% additive soil activity type which was previously 1.3 (Montmorillonite classification) to 0.8 (Lilite classification), 10% additive to 0.7 (Lilite classification), 15% and 20% additive to 0.5 or Kaolinite classification.

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Stabilisasi Tanah Ekspansive dengan Menggunakan Tanah Putih untuk Tanah Dasar di Daerah Godong Kabupaten Grobogan Jawa Tengah

Cited by 6 publications

References 5 publications

Fly Ash PLTU Sumber Alam Sekurau Kalimantan Utara sebagai Binder Beton Geopolimer

Fly Ash PLTU Sumber Alam Sekurau Kalimantan Utara sebagai Binder Beton Geopolimer

Penelitian Stabilitas Struktur Tanah Lempung Bersifat Monmorillonite Menggunakan Limbah Ampas Kopi

The Effect of Addition of Limestone Powder and Fly – Ash on Land Classification

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