Process of andesite stone as material of cement substitution in making paving block

Amin, Muhammad; Supriyatna, Yayat Iman; Isnugroho, Kusno; Sudibyo,; Septiana, Rina; Syafriadi,

doi:10.1088/1757-899x/478/1/012040

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Pada penelitian ini menggunakan metode Taguchi untuk menentukan kondisi optimum dan mempelajari parameter parameter yang berpengaruh pada proses ekstraksi pelarut (Amin et al, 2019;Sudibyo et al, 2020). Adapun parameter yang dipelajari pada penelitian ini adalah lama ekstraksi, pH larutan aqueous dan perbandingan volume larutan organic/aquoes (O/A).…”

Section: Pendahuluanunclassified

Pengaruh pH, Waktu,Nisbah Volume Organik Dan Aqueos (O/A) Terhadap Proses Pemisahan Kobalt Dari Slag Nickel Pig Iron (NPI)

Herlina¹,

Sudibyo²,

Prasetyo³

et al. 2021

j.res.technol.ind.

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Nickel Pig Iron (NPI) merupakan ferronikel kualitas rendah yang mana digunakan sebagai alternatif bahan baku untuk mengembangkan pembuatan baja tahan karat. Proses pembuatan NPI menggunakan metode pirometalurgi juga menghasilkan slag yang masih mengandung Kobalt. Pada penelitian ini, proses pemisahan Kobalt dari slag NPI ini menggunakan metode solvent extraction (ekstraksi pelarut). Slag NPI yang telah disamakan ukurannya kemudian dileaching dengan menggunakan asam asetat. Larutan leaching kemudian diatur pH-nya dengan menggunakan NaOH, kemudian dilakukan ektraksi cair-cair tahap pertama dengan Versatic Acid dan kerosene. Extraksi tahap pertama bertujuan untuk mengambil nikel dan kobalt dari larutan leaching. Parameter yang digunakan dalam penelitian ini adalah waktu operasi, nisbah volume (O/A) dan juga pH larutan pada ektraksi cair-cair tahap pertama. Parameter tersebut dipelajari dan dioptimasi dengan menggunakan rancangan ekperimen Taguchi. Hasil optimum dari extraksi tahap pertama ini kemudian digunakan pada extraksi tahap Extraksi tahap kedua dengan Cyanex 272 dan kerosene. Extraksi tahap kedua bertujuan untuk mengambil cobalt dari campuran nikel dan cobalt. Hasil analisis Taguchi menunjukkan bahwa kondisi optimum pada proses ekstraksi pelarut menggunakan versatic acid ialah pada waktu 20 menit, pH 6 dan nisbah volume larutan organik /aqueous (O/A) sebesar 0,75.

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Section: Pendahuluanunclassified

Pengaruh pH, Waktu,Nisbah Volume Organik Dan Aqueos (O/A) Terhadap Proses Pemisahan Kobalt Dari Slag Nickel Pig Iron (NPI)

Herlina¹,

Sudibyo²,

Prasetyo³

et al. 2021

j.res.technol.ind.

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“…Their mechanical properties control the applicability of coarse aggregate. The most common igneous rock that is used to substitute coarse aggregate for applied in concrete, road, and railway construction is andesite stone [1]- [8]. The complexity of construction, such as mass concrete and heavy reinforcement area of the structure, brings a problem due to the flowability of normal concrete which can affect the concrete durability.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of flowing concrete and early strength concrete with the addition of type D and F admixtures

et al. 2023

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Flowing concrete (FC) and self-compacting concrete (SCC) that are produced with admixtures can be a solution to the complexity of construction problems. Self-compacting concrete is a special type of flowing concrete, but flowing concrete is not necessarily self-compacting concrete. This paper investigates the adding type D and F admixtures with andesite stone as the potential local coarse aggregate materials which were abundantly available for flowing concrete and early strength concrete (ESC) performance. This study has two test categories: fresh concrete and hardened concrete. The fresh concrete category includes slump, slump flow, and T500 tests. Meanwhile, the hardened concrete category includes compressive, splitting tensile, and flexural strength tests. The experimental results indicated that the admixture type F dosage of 1.0%, 1.55% and 1.75% cement weight can enhance the compressive strength by 3.88%, 5.82% and 9.71% respectively. The combination of type F and D admixtures with dosage of 0.15% and 0.2% cement weight show a reduction in compressive strength by 12.62% and 3.89% respectively. On the other hand, both combination of admixtures can reach better performance on the final setting time which lead the slows the hydration process and provides adequate time to put concrete to the formwork. The results also show adequate correlations between compressive strength and the flexural strength. Furthermore, a prediction model is established the ratio of both value based on the regression analyses, while it decreases obviously with the increase of compressive strength. It can be clearly that the ratio is strongly affected by compressive strength.

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Process of andesite stone as material of cement substitution in making paving block

Cited by 2 publications

References 4 publications

Pengaruh pH, Waktu,Nisbah Volume Organik Dan Aqueos (O/A) Terhadap Proses Pemisahan Kobalt Dari Slag Nickel Pig Iron (NPI)

Pengaruh pH, Waktu,Nisbah Volume Organik Dan Aqueos (O/A) Terhadap Proses Pemisahan Kobalt Dari Slag Nickel Pig Iron (NPI)

Mechanical behavior of flowing concrete and early strength concrete with the addition of type D and F admixtures

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