Sudrajat, Sudrajat (2016) Penilaian Agregat Buatan Berbahan Dasar Fly Ash Untuk Bahan Perkerasan Jalan di Berbagai Variasi Suhu Perawatan. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Keberadaan sumber daya alam agregat batu pecah sebagai material konstruksi perkerasan jalan semakin lama semakin berkurang. Di sisi lain, pembangunan infrastruktur jalan yang cukup pesat di Indonesia membuat semakin menipisnya agregat alami batu pecah ini. Untuk itu diperlukan upaya lain dalam hal penggunaan agregat sebagai material konstruksi. Penelitian ini bertujuan untuk membuat agregat buatan berbahan dasar fly ash sebagai material konstruksi perkerasan jalan.
Penelitian dilakukan dalam skala laboratorium. Pembuatan agregat buatan dilakukan dengan menggunakan pan granulator. Pan granulator ini berdiameter 120 cm, kemiringan 400 dengan kecepatan putar 26 rotasi per menit. Bahan yang digunakan sebagai binder/ pengikat berupa larutan alkali aktivator berbahan dasar Sodium Silikat (Na2SiO3) dan Sodium Hidroksida (NaOH). Pembuatan dimulai dengan memasukkan fly ash dalam kondisi kering ke dalam pan granulator yang sedang berputar, kemudian secara perlahan-lahan larutan alkali aktivator disemprotkan sehingga terbentuk granul/ butiran. Selanjutnya agregat buatan yang terbentuk dilakukan perawatan pada suhu ruang dan temperatur tinggi menggunakan mesin steam curing sebelum dilakukan pengujian berdasarkan Spesifikasi Umum Bina Marga 2010 rev 3.
Hasil penelitian menunjukkan bahwa agregat buatan ini belum memenuhi persyaratan Spesifikasi Umum Bina Marga 2010 rev 3 sebagai material perkerasan jalan yaitu untuk nilai kelekatan dan penyerapan air. Nilai kelekatan masih di bawah 95%, sedangkan besarnya penyerapan air masih di atas 3%. Sedangkan persyaratan yang memenuhi Spesifikasi Umum Bina Marga 2010 rev 3 adalah nilai abrasi dan kekekalan agregat (soundness). Nilai abrasi masih di bawah 40%, sedangkan nilai kekekalan agregat masih di bawah 12%. Berdasarkan perbandingan harga yang telah dilakukan antara agregat buatan dengan agregat alami batu pecah, menunjukkan disparitas harga sebesar Rp. 149.000,00/ kg. Walaupun demikan, agregat buatan ini merupakan salah satu solusi yang bisa dikembangkan untuk mengurangi dampak lingkungan akibat keberadaan fly ash yang cukup melimpah di Indonesia. ======================================================================================================
The existence of natural resources as crushed stone aggregate as
construction material progressively reduced. On the other hand, the construction of road infrastructure rapidly in Indonesia is getting increased concerns about the depletion of natural aggregate.
So, it’s required another effort in terms of
aggregate use as construction material. This study aims to create an artificial aggregate made from fly
ash as a material pavement.
The study was conducted in a laboratory scale. Making artificial aggregate using a pan granulator.
Diameter of pan granulator is 120 cm, the slope of
pan is 400, with rotational speed 26 rotations per minute. The binder materials as activator using
Sodium Silicate (Na2SiO3) and Sodium Hydroxide (NaOH).
Making artificial aggregates is began with inserting fly ash in dry conditions into the pan granulator
that’s spinning, then alkaline activator solution is slowly sprayed until granules be formed. Furthermore, the artificial aggregates is cured at room temperature and elevated temperature by using steam curing
engines before it tests by Spesifikasi Umum Bina Marga
2010 rev 3. The results showed that the artificial aggregate is not yet qualify as a pavement
material.This happens because the affinity value and the amount of water absorption is not eligible based on
Spesifikasi Umum Bina Marga 2010 rev 3. Affinity
value is still below 95%, while the amount of water absorption is still above 3%.
However, abration and soundness value have shown encouraging results. Abration value is still below 40%, while the value of soundness is still
below 12% based on Spesifikasi Umum Bina Marga 2010 rev 3. Based on price comparisons between artificial aggregates and natural aggregate, it’s showing that
economic value of artificial aggregate have
not been replace the role of natural aggregate yet with a price disparity that reached Rp. 149,000.00/kg.
Even though, this artificial aggregate is one solution that can be developed to reduce
environmental damage due to the volume of fly ash which is relatively abundant in Indonesia.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Geopolimer, agregat buatan, fly ash, alkali aktivator, sodium hidroksida, sodium silikat, XRF, steam curing, PT. Petrokimia Gresik, Geopolymer, artificial aggregate, fly ash, activator, sodium hidroxide, sodium silicate , XRF, steam curing |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TE Highway engineering. Roads and pavements T Technology > TN Mining engineering. Metallurgy > TN295 Fly ash |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis |
| Depositing User: | SUDRAJAT - - |
| Date Deposited: | 12 Jan 2017 02:37 |
| Last Modified: | 26 Feb 2021 01:29 |
| URI: | http://repository.its.ac.id/id/eprint/1180 |
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