Situmeang, Steven Putera Rejeki (2024) Analisis Pengaruh Variasi Komposisi Zeolite dan Fly Ash Terhadap Kuat Tekan dan Kemampuan Adsorpsi CO2 Bahan Komposit Semen/GGBFS/FA/Zeolite/Pasir. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Industri semen merupakan salah satu penyumbang emisi karbon terbesar di dunia setidaknya 8% dari emisi global. Pembuatan semen adalah bagian yang paling intensif karbon dioksida karena melibatkan penggunaan bahan bakar fosil untuk memanaskan campuran batu kapur (kalsium karbonat) dan tanah liat hingga temperatur yang tinggi di dalam tungku. Maka dari itu pembuatan mortar berbasis GGBFS dengan penambahan variasi fly ash dapat mengurangi penggunaan semen yang ada. Selain itu, dengan penambahan variasi komposisi dari bahan yang memiliki sifat adsorpsi seperti zeolit dapat membantu menangkap gas CO2 yang telah terproduksi. Hal tersebut dapat terjadi dikarenakan zeolit merupakan suatu material yang didalamnya mengandung banyak sekali mineral, memiliki karakteristik, dan sifat yang efektif dalam menangkap CO2. Penelitian ini bertujuan untuk menganalisis pengaruh variasi komposisi zeolit dan fly ash terhadap kuat tekan dan kemampuan penangkapan gas CO2 mortar semen GGBFS. Mortar GGBFS dibuat dengan adanya variasi komposisi dari zeolit dan fly ash secara berturut sebanyak (0% dan 20%), (5% dan15%), (10% dan 10%), (15% dan 5%), (20% dan 0%) sehingga dapat disebut sebagai komposit Semen/GGBFS/FA/Zeolit/Pasir dengan curing time selama 7, 14, dan 28 hari pada wadah berisi air. Pada penelitian ini dilakukan beberapa pengujian seperti SEM-EDX, XRD, XRF, FTIR, densitas, penyerapan air, kekuatan tekan, dan pengujian CO₂ adsorpsi pada benda uji mortar GGBFS. Dari hasil penelitian, diperoleh nilai densitas mortar berdasarkan ASTM C905 mengalami penurunan seiring dengan meningkatnya persentase penambahan zeolite dan menurunnya persentase penambahan FA, dengan nilai maksimum didapatkan pada variasi F15Z5 sebesar 2,13 g/cm3 . Nilai penyerapan air mortar berdasarkan ASTM C1403 memiliki nilai maksimum pada variasi F5Z15 sebesar 42,5 g/cm2 .Dari penelitian didapatkan nilai kuat tekan maksimal variasi komposisi zeolite dan fly ash yang didapat pada umur 28 hari adalah pada variasi sampel F15Z5 (fly ash 15% dan zeolit 5%), yaitu 28,32 MPa. Dari hasil pengujian CO2 adsorpsi diketahui bahwa nilai adsorpsi maksimal yang didapat dengan variasi komposisi fly ash dan zeolit adalah pada sampel F5Z15 (fly ash 5% dan zeolit 15%) sebesar 0,844% pertambahan massa.
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The cement industry is one of the largest contributors to carbon emissions in the world, at least 8% of global emissions. Cement manufacturing is the most carbon dioxide intensive as it involves the use of fossil fuels to heat a mixture of limestone (calcium carbonate) and clay to high temperatures in a furnace. Therefore, the manufacture of GGBFS-based mortar with the addition of fly ash variation can reduce the use of existing cement. In addition, the addition of variations in the composition of materials that have adsorption properties such as zeolites can help capture CO2 gas that has been produced. This can happen because zeolite is a material that contains a lot of minerals, has characteristics, and properties that are effective in capturing CO2. This study aims to analyze the effect of variations in the composition of zeolite and fly ash on the compressive strength and CO2 gas capture ability of GGBFS cement mortar. GGBFS mortar was made with variations in the composition of zeolite and fly ash as much as (0% and 20%), (5% and 15%), (10% and 10%), (15% and 5%), (20% and 0%) respectively so that it can be referred to as Cement/GGBFS/FA/Zeolite/Sand composite with curing time for 7, 14, and 28 days in a container filled with water. In this study, several tests were carried out such as SEM-EDX, XRD, XRF, FTIR, density, water absorption, compressive strength, and CO2 adsorption testing on GGBFS mortar specimens. From the results of the study, it was obtained that the density value of mortar based on ASTM C905 decreased as the percentage of zeolite addition increased and the percentage of FA addition decreased, with the maximum value obtained in the F15Z5 variation of 2.13 g/cm3 . The water absorption value of mortar based on ASTM C1403 has a maximum value in the F5Z15 variation of 42.5 g/cm2 . From the research, the maximum compressive strength value of the variation of zeolite and fly ash composition obtained at the age of 28 days is in the sample variation F15Z5 (fly ash 15% and zeolite 5%), which is 28,32 MPa. From the CO2 adsorption test results, it is known that the maximum adsorption value obtained with variations in the composition of fly ash and zeolite is in sample F5Z15 (fly ash 5% and zeolite 15%) of 0.844% mass gain.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Adsorpsi CO2, Fly Ash, GGBFS, Kuat Tekan, Semen, Zeolit. Cement, CO2 Adsorption, Compressive Strength, Mortar, Zeolite |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD427.F58 Fly ash T Technology > TD Environmental technology. Sanitary engineering > TD883.5 Air--Pollution T Technology > TH Building construction > TH1461 Concrete construction. T Technology > TH Building construction > TH880 Sustainable buildings. Sustainable construction. Green building T Technology > TH Building construction > TH900+ Construction equipment in building construction |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Steven Putera Rejeki Situmeang |
| Date Deposited: | 05 Feb 2024 08:20 |
| Last Modified: | 05 Feb 2024 08:22 |
| URI: | http://repository.its.ac.id/id/eprint/106108 |
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