PEMANFAATAN PENGGUNAAN BAKTERI BACILLUS MEGATERIUM, SPOROLACTOBACILLUS SP, DAN THERMOACTINOMYCES SP SEBAGAI AGEN SELF HEALING CONCRETE PADA KERETAKAN BETON

Pratama, Adjie Gemilang (2023) PEMANFAATAN PENGGUNAAN BAKTERI BACILLUS MEGATERIUM, SPOROLACTOBACILLUS SP, DAN THERMOACTINOMYCES SP SEBAGAI AGEN SELF HEALING CONCRETE PADA KERETAKAN BETON. S1 thesis, Universitas Jambi.

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Abstract

Perkembangan inovasi-inovasi beton dikembangkan dengan berbagai macam tujuan dengan pemanfaatan berbagai bahan tambah yang dicampurkan pada beton. Salah satu tujuan pemanfaatan bahan tambah sebagai inovasi agar beton memiliki kemampuan self healing concrete atau kemampuan pemulihan mandiri terhadap jenis keretakan beton. Self healing concrete ini menggunakan pemanfaatan bakteri genus bacillus yang teridentifikasi bergram positif dan menghasilkan spora. Penelitian ini menggunakan larutan Bacillus Megaterium, Sporolactobacillus sp, dan Thermoactinomyces sp dengan persentasi 4%,5%, dan 6% pada masing-masing sampel beton. Metode perawatan yang digunakan yaitu perendaman selama 28 hari. Pengujian yang dilakukan dalam penelitian ini adalah pengujian agregat kasar, agregat halus, bakteri, slump, kuat tekan, berat jenis, SEM dan EDX. Perbandingan self healing concrete yang menggunakan campuran variasi bakteri dengan beton normal secara visual menunjukan bahwa adanya kemampuan pulih mandiri pada beton dengan menggunakan persentase bakteri sebagai penggatian sebagian air dengan adanya perkembangan spora bakteri yang menutupi pada permukaan celah retak beton dibandingkan beton normal. Serta pada berat beton dengan campuran variasi persentase bakteri mengalami penambahan berat seiring celah retak beton yang tertutupi. Self Healing Concrete dari campuran variasi bakteri pada beton menunjukan bahwa material yang banyak dihasilkan dalam peran mengisi celah keretakan beton adalah CaO (Kalsium Oksida). Kalsium Oksida dapat meningkatkan kuat tekan beton dari kuat tekan rencana. Hasil kuat tekan beton didapatkan meningkat berbanding lurus dengan penambahan persentase bakteri sebagai pengganti air yang digunakan. Semakin tinggi persentase bakteri sebagai pengganti air semakin tinggi pula nilai kuat tekan yang dihasilkan. sehingga dapat dibuktikan bahwa sampel beton merupakan self healing concrete. The development of concrete innovations was developed for various purposes by utilizing various additional materials mixed into the concrete. One of the goals of using added materials as an innovation is so that concrete has the ability to self-heal concrete or the ability to self-recovery against types of concrete cracks. This self-healing concrete uses bacteria from the genus Bacillus which have been identified as gram-positive and produce spores. This research used a solution of Bacillus Megaterium, Sporolactobacillus sp, and Thermoactinomyces sp with a percentage of 4%, 5%, and 6% in each concrete sample. The treatment method used is soaking for 28 days. The tests carried out in this research were coarse aggregate, fine aggregate, bacteria, slump, compressive strength, specific gravity, SEM and EDX. Comparison of self-healing concrete that uses a mixture of various bacteria with normal concrete visually shows that there is a self-healing ability in concrete using a percentage of bacteria as a partial replacement for water with the development of bacterial spores that cover the surface of concrete cracks compared to normal concrete. And the weight of concrete mixed with variations in the percentage of bacteria increases in weight as the cracks in the concrete are covered. Self Healing Concrete from a mixture of various bacteria in concrete shows that the material that is often produced in the role of filling gaps in concrete cracks is CaO (Calcium Oxide). Calcium Oxide can increase the compressive strength of concrete from the design compressive strength. The compressive strength results of the concrete were found to increase in direct proportion to the addition of the percentage of bacteria used as a substitute for water. The higher the percentage of bacteria as a water substitute, the higher the compressive strength value produced. so it can be proven that the concrete sample is self-healing concrete.

Type:	Thesis (S1)
Uncontrolled Keywords:	Self Healing Concrete, Bacillus Megaterium, Sporolactobacillus Sp, Thermoactinomyces Sp, Bakteri, Keretakan Beton
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	Pratama
Date Deposited:	12 Dec 2023 03:01
Last Modified:	12 Dec 2023 03:01
URI:	https://repository.unja.ac.id/id/eprint/58469

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