Ashara, Khansa Fadilah (2021) Pengaruh Jumlah Putaran Mesin Ball Mill pada Proses Grinding Semen Geopolimer Terhadap Properties Beton Geopolimer Berbasis Fly Ash. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penggunaan metode kering pada pembuatan beton geopolimer merupakan alternatif dalam pembuatan semen menggunakan fly ash tipe C. Metode kering memanfaatkan material pozzolan dan aktivator dalam bentuk padatan. Penelitian pada tugas akhir ini bertujuan untuk mengetahui jumlah putaran ball mill yang optimal dalam proses grinding semen pada pembuatan beton geopolimer. Sehingga dengan mengetahui banyak jumlah putaran ball mill memudahkan untuk memproduksi beton geopolimer dengan kualitas maksimal. Proses pencampuran material semen atau grinding untuk metode kering menggunakan alat mesin ball mill.
Metode penelitian pada tugas akhir ini yaitu mempersiapkan dan menguji material, merencanakan mix design, pembuatan semen geopolimer dan pembuatan beton geopolimer. Jumlah standart putaran pada proses grinding utntuk semen geopolimer sebanyak 500x putaran. Variasi jumlah putaran ball mill pada penelitian ini proses grinding dengan tanpa grinding (0x putaran), 250x putaran, 500x putaran dan 750x putaran ball mill. Pengujian durabilitas dilakukan untuk mengetahui performa beton yaitu uji slump (workability), uji UPV, uji resisitivitas, uji kuat tekan, uji porositas dan uji permeabilitas. Pengujian beton dilakukan pada umur 7, 14, dan 28 hari. Curing dilakukan dengan suhu ruang (ambient curing).
Hasil pengujian slump untuk mengetahui workability beton menunjukkan bahwa semakin banyak jumlah putaran ball mill maka nilai slump semakin turun dengan nilai slump antara 22 cm - 15 cm. Nilai slump telah memenuhi syarat SNI 1972- 2008 yaitu 15mm- 23 cm. Kuat tekan pada umur 28 hari yang didapat untuk tanpa grinding, 500x putaran dan 750x putaran adalah 33.49 MPa, 63,22 MPa, dan 53,64MPa. Penurunan kuat tekan terjadi pada variasi 750x putaran ball mill sebesar 15,2%. Hal ini diperkuat dengan hasil porositas, untuk nilai porositas tanpa grinding adalah 6,18; 250x, 500x, 750x putaran ball mill adalah 6,16: 5,18 dan 6.02. Nilai pori kecil maka beton geopolimer tersebut semakin rapat, sehingga membuat nilai kuat tekan semakin tinggi
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The use of the dry method in the manufacture of geopolymer concrete is an alternative in the manufacture of cement using type C fly ash. In the dry method, the pozzolanic material and activator in solid form are ground. The research in this final project aims to determine the optimal number of ball mill rotations in the cement grinding process in the manufacture of geopolymer concrete. Knowing the number of rounds of the ball mill makes it easier to produce geopolymer concrete with maximum quality. The process of mixing cement material or grinding for the dry method using a ball mill machine.
The research methods in this final project are preparing and testing materials, planning mix designs, making geopolymer cement and making geopolymer concrete. The standard number of rounds in the grinding process for geopolymer cement is 500 times. The variation in the number of rounds of the ball mill in this study was the grinding process with no grinding (0x rounds), 250x rounds, 500x rounds and 750x rounds of the ball mill. Durability tests were carried out to determine the performance of concrete, namely slump test (workability), UPV test, resistivity test, compressive strength test, porosity test and permeability test. Concrete testing was carried out at the age of 7, 14, and 28 days. The curing is at the ambient temperature (ambient curing).
The results of the slump test to determine the workability of concrete show that the more the number of rounds of the ball mill, the lower the slump value with the slump value between 22 cm - 15 cm. The slump value has met the requirements of SNI 1972-2008, which is 15mm-23 cm. The compressive strength at the age of 28 days obtained without grinding, 500x rotation and 750x rotation is 33.49 MPa, 63.22 MPa, and 53.64 MPa. The decrease in compressive strength occurred at a variation of 750x ball mill rotation of 15.2%. This is confirmed by the porosity results, for the porosity value without grinding is 6,18; 250x, 500x, 750x rounds of the ball mill are 6.,16; 5,18 and 6.02. The smaller the pore value, the tighter the geopolymer concrete, thus making the compressive strength value higher.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Geopolimer, Mesin Ball Mill, Grinding, Geopolymer, Ball Mill Machine |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA439 Lightweight concrete. High strength concrete. |
| Divisions: | Faculty of Vocational > Civil Infrastructure Engineering (D4) |
| Depositing User: | Khansa Fadilah Ashara |
| Date Deposited: | 30 Aug 2021 03:15 |
| Last Modified: | 30 Aug 2021 03:15 |
| URI: | http://repository.its.ac.id/id/eprint/90439 |
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