Analisis Pengaruh Penambahan Lumpur Sidoarjo Terhadap Kuat Tekan Mortar Geopolimer Berbasis Abu Terbang Dan Ground Granulated Blast Furnace Slag

Ramadhan, Muhammad Daffa (2023) Analisis Pengaruh Penambahan Lumpur Sidoarjo Terhadap Kuat Tekan Mortar Geopolimer Berbasis Abu Terbang Dan Ground Granulated Blast Furnace Slag. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Lumpur Sidoarjo merupakan suatu material yang keluar dari inti bumi hasil dari pengeboran di area Porong. Lumpur ini bersifat panas dan menyembur tak terkendali sehingga merugikan pemukiman sekitar. Akan tetapi, Lumpur Sidoarjo ini berpotensi sebagai bahan bangunan dikarenakan terdapatnya kandungan khas material pozzolan mirip semen berupa silikat (SiO2), alumina (Al2O3), dan kapur (CaO) yang tinggi. Mengingat_industrialisasi manufaktur semen di Indonesia sudah hampir mencapai titik over-supply dan proses pembuatannya membutuhkan banyak energi dan mengeluarkan banyak emisi gas CO2, maka material lumpur Sidoarjo cocok sebagai pengganti semen konvensional ini dengan memanfaatkan geopolimerisasi menjadi mortar geopolimer. Pada penelitian ini, mortar geopolimer material lumpur Sidoarjo dipadukan dengan material berbasis silika-alumina lainnya berupa fly ash dan ground granulated blast furnace slag (GGBFS). Presentase lumpur Sidoarjo (LuSi) sebagai penyusun divariasikan 5%, 10%, 15%, 20%, dan 25%. Dengan bantuan agregat halus berupa pasir lumajang, berbagai material tersebut akan dikombinasikan sesuai mix design dalam suatu benda uji mortar berukuran 5x5x5 cm. Uji yang dilakukan pada material penyusun geopolimer seperti XRF, XRD, SEM dan FTIR. Pengujian fisik yang dilakukan berupa uji densitas dan absorbsi air. Pada pengujian densitas, mortar berurutan dari lumpur Sidoarjo variasi 5%-25% mengalami tren penurunan, yang dimana nilai densitas terbesar didapat oleh paduan lumpur Sidoarjo 5% sebesar 4138.20 kg/m3. Untuk uji absorbsi air, range tertinggi didapat oleh paduan lumpur Sidoarjo 10% yaitu 4,8-22,8 g/100 cm2. Untuk menganalisis performa mortar, dilakukan pengujian tekan. Hasil uji tekan yang didapat juga berbanding lurus dengan uji densitas yang dimana nilai terkuat yang didapat adalah pada penambahan lumpur Sidoarjo 5% dengan nilai sebesar 77,1 MPa. Karakterisasi mortar berupa SEM-EDX dan XRD menunjukkan komposisi yang ada serupa dengan komposisi pada pengujian awal, dengan tambahan adanya jaringan pengikat dari reaksi alkali aktivator.
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Sidoarjo mud is a material that comes from the earth's core due to drilling in the Porong area. This mud has a hot characteristic and gushes out of control, causing harm to the surrounding environment. However, Sidoarjo Mud has the potential as a building material due to the presence of a specific content of cement-like pozzolanic materials in the form of silicate (SiO2), alumina (Al2O3), and high lime (CaO). Considering that the industrialization of cement manufacturing in Indonesia has almost reached the over-supply and the manufacturing process requires much energy and emits a lot of CO2 gas, the Sidoarjo mud material is suitable as a substitute for conventional cement by utilizing geopolymer into geopolymer mortar. In this study, the Sidoarjo mud material geopolymer mortar was combined with other silica alumina-based materials in the form of fly ash and ground granulated blast furnace slag (GGBFS). The percentage of Sidoarjo mud (LuSi) as a constituent varies by 5%, 10%, 15%, 20% and 25%. With the help of fine aggregate in the form of Lumajang sand, the various materials will be combined according to the mix design in a mortar test object measuring 5x5x5 cm. Tests were carried out on geopolymer constituent materials such as XRF, XRD, SEM and FTIR. Physical tests were carried out in density tests and water absorption. In the density test, sequential mortar from 5% -25% Sidoarjo mud experienced a decreasing trend, where the most significant density value was obtained by 5% Sidoarjo mud alloy with 4138.20 kg/m3. The highest range for the water absorption test was obtained by 10% Sidoarjo mud alloy, with a value of 4.8- 22.8 g/100 cm2. A compression test was carried out to analyze the performance of the mortar. The compressive test results are also directly proportional to the density test, where the most substantial value obtained is the addition of 5% Sidoarjo mud with a value of 77.1 MPa. Mortar characterization in the form of SEM-EDX and XRD showed that the existing composition was similar to the composition in the initial test, with the addition of a binding network from the alkaline activator reaction.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fly Ash, GGBFS, Lumpur Sidoarjo, Alkali Activator, Sidoarjo Mud, Alkali Activator
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN295 Fly ash
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Daffa Ramadhan
Date Deposited:	10 Feb 2023 08:05
Last Modified:	10 Feb 2023 08:05
URI:	http://repository.its.ac.id/id/eprint/96544

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