Iqbal, Ammar (2024) Penyerapan Karbon Dioksida dalam Bata Ringan dan Pengaruhnya terhadap Sifat Mekanik dan Daya Tahan. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
ABSTRAK
Emisi CO2 dalam jumlah besar dari berbagai sektor seperti industri, transportasi, dan pembangunan menyebabkan peningkatan efek rumah kaca dan pemanasan global. Dalam menghadapi tantangan lingkungan dan kebutuhan akan konstruksi berkelanjutan, konsep pengembangan bata ringan dengan kemampuan penyerapan CO2 dari limbah industri menjadi alternatif yang sedang dikembangkan. Penelitian ini memfokuskan pada penyerapan gas CO2 dalam bata ringan dengan menggunakan variasi penambahan fly ash dan spent bleaching earth sebagai bahan tambahan serta menganalisis dampaknya terhadap kuat tekan dan durabilitasnya. Hasil dari pengujian ini bata ringan dengan bahan tambahan fly ash mengalami peningkatan daya serap sebesar 8,12%, sedangkan dengan spent bleaching earth naik sebesar 21,98%. Hasil dari kuat tekan pada bata ringan setelah penyerapan CO2 mengalami kenaikan sebesar 8,16%, sementara bata ringan dengan fly ash mengalami kenaikan sebesar 31,6%. Namun, bata ringan dengan spent bleaching earth mengalami penurunan kuat tekan sebesar 13,84%. Pada variasi bata ringan normal, terjadi peningkatan daya serap air sebesar 99,47%, sedangkan pada bata ringan dengan fly ash terjadi peningkatan sebesar 98,47%, dan pada bata ringan dengan spent bleaching earth terjadi peningkatan sebesar 10,46%. Selain itu, dari pengujian penetrasi klorida terjadi penurunan nilai koefisien difusi sebesar 58,05%, sementara pada bata ringan dengan fly ash terjadi penurunan sebesar 19,45%, dan pada bata ringan dengan spent bleaching earth terjadi peningkatan sebesar 25,38%.
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Large amounts of CO2 emissions from various sectors such as industry, transportation, and development are leading to an increase in the greenhouse effect and global warming. In the face of environmental challenges and the need for sustainable construction, the concept of developing lightweight bricks with the ability to absorb CO2 from industrial waste is an alternative that is being developed. This study focuses on the absorption of CO2 gas in light bricks by using variations of the addition of fly ash and spent bleaching earth as additional materials and analyzing their impact on their compressive strength and durability. The results of this test were light bricks with fly ash additives increased absorption by 8.12%, while spent bleaching earth increased by 21.98%. The result of compressive strength in light bricks after CO2 absorption increased by 8.16%, while light bricks with fly ash increased by 31.6%. However, light bricks with spent bleaching earth experienced a decrease in compressive strength by 13.84%. In the normal light brick variation, there was an increase in water absorption by 99.47%, while in light bricks with fly ash there was an increase of 98.47%, and in light bricks with spent bleaching earth there was an increase of 10.46%. In addition, from the chloride penetration test, there was a decrease in the value of the diffusion coefficient by 58.05%, while in light bricks with fly ash there was a decrease of 19.45%, and in light bricks with spent bleaching earth there was an increase of 25.38%.
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