PENGARUH PROSENTASE LUASAN DEEP CEMENT MIXING (DCM) TERHADAP DAYA DUKUNG TANAH LUNAK

Bachtiar Suwandoko, Adiwena (2021) PENGARUH PROSENTASE LUASAN DEEP CEMENT MIXING (DCM) TERHADAP DAYA DUKUNG TANAH LUNAK. Sarjana thesis, Universitas Brawijaya.

Abstract

Tanah merupakan merupakan bagian terpenting dari konstruksi. Dalam konstruksi, bangunan yang baik dibangun di atas tanah yang memiliki daya dukung stabil agar bangunan diatasnya tidak mengalami keruntuhan. Untuk menghindari kegagalan konstruksi diatasnya, maka dilakukan perbaikan tanah untuk meningkatkan nilai daya dukung tanah tersebut. Pada penelitian ini, metode yang akan digunakan yaitu Deep Cement Mixing (DCM) menggunakan campuran semen sebagai bahan aditif, penelitian dilakukan pada skala laboratorium dengan box berukuran 50x50 cm, tanah dalam keadaan slurry dengan prosentase kadar air sekitar 95%, dan benda uji perbaikan memiliki diameter 6 inch, tinggi 30 cm. Terdapat 4 kali percobaan dimana dengan prosentase perbaikan 7,29%, 15,6%, 21,9%, dan 29,2%. Kemudian dilakukan uji pembebanan secara vertikal dengan bantuan pompa hidrolik. Dari percobaan tersebut bahwa perubahan penurunan yang terjadi setiap kenaikan prosentase perbaikan mengalami peningkatan kekuatan tanah dimana saat perbaikan dengan prosentase 7,29% saat tegangan 0,18 Kg/cm2 mengalami penurunan sebesar 40,47mm, sedangkan dengan prosentase perbaikan 29,2% saat tegangan 0,18 Kg/cm2 mengalami penurunan sebesar 16,93 mm, dan daya dukung tanah setiap prosentase perbaikan mengalami peningkatan BCI dimana nilai BCI saat prosentase perbaikan 7,29% adalah 0, sedangkan nilai BCI pada prosentase perbaikan 29,2% adalah 154%. Dapat disimpulkan bahwa perbaikan yang dilakukan cukup efektif untuk meningkatkan daya dukung tanah.

English Abstract

Soil is the basis and also the most important part of a construction. In a construction, a good building is built on land that has a stable bearing capacity so that the building above it does not collapse. To avoid the failure of a construction on it, soil improvement is carried out to increase the carrying capacity of the soil. Improvements to be made are Deep Soil Mixing (DSM) with a mixture of cement, this improvement is carried out to a depth of 30 meters. In this study, the method that will be used is Deep Cement Mixing (DCM) using a mixture of cement as an additive, the type of cement used in this experiment is PCC. The research was conducted on a laboratory scale with a box measuring 50x50 cm, the soil was in a slurry state with a percentage of water content of about 95%, and the repair specimen had a diameter of 6 inches, height 30 cm. There were 4 trials where the percentage improvement was 7.29%, 15.6%, 21.9%, and 29.2%. To make the test object, the soil is first crushed into small grains, then mixed with cement and molded into a 6 inch pipe. After that, curing will be carried out for 3 days in the mold, and 4 days in a box with original soil. Then a vertical loading test is carried out by hydraulic pump until the load value constant and the sample is deformed. From these experiments, it was found that the change in settlement that occurred for every increase in the percentage of improvement experienced an increase in soil strength where at the time of repair with a percentage of 7.29% when the stress was 0.18 Kg/cm2 decreased by 40.47mm, while the percentage of improvement was 29.2%. when the stress was 0.18 Kg/cm2 decreased by 16.93 Kg/cm2, and the carrying capacity of the soil for each percentage improvement experienced an increase in BCI where the BCI value at the percentage improvement was 7.29% 0, while the BCI value at the percentage improvement was 29.2 % is 154%. It can be concluded that the improvements made are quite effective in increasing the bearing capacity of the soil.

Other obstract

-

Item Type:	Thesis (Sarjana)
Identification Number:	624
Uncontrolled Keywords:	Deep Cement Mixing, Daya Dukung tanah, BCI, Deep Cement Mixing, cement, soil bearing capacity, settlement.
Subjects:	600 Technology (Applied sciences) > 624 Civil engineering
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	Unnamed user with email gaby
Date Deposited:	19 Oct 2021 06:51
Last Modified:	07 Oct 2024 07:10
URI:	http://repository.ub.ac.id/id/eprint/184041

Text Adiwena Bachtiar Suwandoko.pdf Download (2MB)

Actions (login required)

View Item