Chandra, Steven (2018) Pengaruh kalsium dan interaksi campuran bakteri bacillus amyloliquefaciens dengan bakteri bacillus megaterium pada stabilitasi tanah lanau. = Effect of calcium and mixed interaction of bacteria basillus amyloliquefaciens with bacillus megaterium bacteria on silt soil stabilization. Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Perkembangan proyek pembangunan berkembang begitu cepat di berbagai macam
daerah. Setiap daerah memiliki jenis tanah yang berbeda. Perbedaan jenis tanah ini
mempengaruhi kekuatan pada tanah tersebut. Dalam pembangunan ditemukan
hambatan ketika jenis tanah memiliki sifat atau daya dukung yang kurang baik.
Untuk jenis tanah lanau memiliki daya dukung yang kurang baik. Berbagai macam
upaya telah dilakukan untuk meningkatkan sifat atau daya dukung pada tanah.
Salah satu cara yang dilakukan adalah dengan metode stabilisasi kimia/grouting.
Grouting adalah metode penambahan bahan tertentu pada tanah yang dapat
merubah sifat dan tanah menjadi lebih kuat. Namun bahan yang digunakan
seringkali tidak ramah lingkungan, untuk menjaga agar penambahan tetap ramah
lingkungan ditemukan metode penambahan dengan memanfaatan bakteri yang
disebut sebagai biogrouting. Dalam penambahan biogrouting, bakteri membantu
dalam proses penghasilan kristal kalsium karbonat yang akan merubah butiran pasir
menjadi batuan pasir sehingga partikel tanah akan lebih rekat satu sama lain
sehingga tanah menjadi lebih kuat. Pengujian daya dukung pada tanah dilakukan
dengan uji unconfined, uji kompaksi dan uji CBR (California Bearing Ratio).
Penelitian ini memiliki masa pemeraman selama 14, 28, 60, dan 90 hari. Hasil
menunjukkan adanya peningkatan nilai kuat geser pada sampel tanah dengan
bakteri Bacillus amyloliquefaciens sebesar 1038.33% dan pada campuran bakteri
Bacillus amyloliquefaciens dengan bakteri Bacillus megaterium sebesar 560.83%
pada uji unconfined selama masa pemeliharaan 90 hari. Pada pengujian CBR
dengan bakteri Bacillus amyloliquefaciens terjadi peningkatan sebesar 44.07% dan
pada campuran bakteri Bacillus amyloliquefaciens dan bakteri Bacillus megaterium
terjadi peningkatan sebesar 5.93%. sehingga dapat disimpulkan terjadi peningkatan
daya dukung pada sampel pengujian unconfined dan CBR. / The development of development projects is growing rapidly in various regions.
Each region has different soil types. This type of soil affects the strength of the soil.
In the construction found obstacles when the soil type has properties and
characteristics that are less good. Various attempts have been made to improve the
nature and character of the soil. One way to do this is by chemical stabilization
method / grouting. Grouting is a method of adding certain materials to the soil that
can change the nature and characteristics of the soil to be stronger. However, the
materials used are often not environmentally friendly, to keep the addition remain
environmentally friendly method of addition discovered by utilizing bacteria called
as biogrouting. In addition to biogrouting, the bacteria assist in the calcium
carbonate crystal revenue process that will convert sand grains into sandstones so
that the soil particles will be more attached to each other so the soil becomes
stronger. The test was done by unconfined test, compaction test and CBR
(California Bearing Ratio) test. The study has a maintenance period of 14, 28, 60,
and 90 days. The results showed an increase in shear strength value in soil samples
with Bacillus amyloliquefaciens bacteria of 1038.33% and in Bacillus
amyloliquefaciens bacteria mixture with Bacillus megaterium bacteria of 560.83%
in unconfined test for 90 days maintenance period. In the CBR test with Bacillus
amyloliquefaciens bacteria there was an increase of 44.07% and in the Bacillus
amyloliquefaciens and Bacillus megaterium bacteria mixture there was an increase
of 5.93%. so it can be concluded that there is an increase in unconfined and CBR
test.
Item Type: | Thesis (Bachelor) |
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Creators: | Creators NIM Email ORCID Chandra, Steven NIM02120120002 UNSPECIFIED UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Widjajakusuma, Jack NIDN0327086805, jack.widjajakusuma@uph.edu Thesis advisor SUGATA, MARCELIA MARCENIDN0321118902 marcelia.sugata@uph.edu |
Additional Information: | SK 21-12 CHA p = 31001000149162 |
Uncontrolled Keywords: | tanah lanau; bakteri; Bacillus amyloliquefaciens; Bacillus megaterium; stabilisasi tanah; biogrouting; silt soil; bacteria; Bacillus amyloliquefaciens; Bacillus megaterium; soil stabilization. |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
Divisions: | University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Civil Engineering Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Civil Engineering |
Depositing User: | Mrs Veronica Fitri Astuti |
Date Deposited: | 15 May 2021 15:08 |
Last Modified: | 01 Jul 2024 02:39 |
URI: | http://repository.uph.edu/id/eprint/25797 |