PENGARUH DUST PROPORTION SPENT CATALYST RCC (LIMBAH PERTAMINA) TERHADAP KARAKTERISTIK MARSHALL DAN DURABILITAS PADA CAMPURAN HOT ROLLED SHEET DENGAN KEPADATAN MUTLAK ( THE INFLUENCE OF DUST PROPORTION SPENT CATALYST RCC (WASTE of PERTAMINA) TO CHARACTERISTIC of MARSHALL AND DURABILITY AT MIXTURE of HOT ROLLED SHEET WITH PRECENTAGE of REFUSAL DENSITY)

HURRIYANTO, JAVID (2008) PENGARUH DUST PROPORTION SPENT CATALYST RCC (LIMBAH PERTAMINA) TERHADAP KARAKTERISTIK MARSHALL DAN DURABILITAS PADA CAMPURAN HOT ROLLED SHEET DENGAN KEPADATAN MUTLAK ( THE INFLUENCE OF DUST PROPORTION SPENT CATALYST RCC (WASTE of PERTAMINA) TO CHARACTERISTIC of MARSHALL AND DURABILITY AT MIXTURE of HOT ROLLED SHEET WITH PRECENTAGE of REFUSAL DENSITY). Masters thesis, program Pascasarjana Universitas Diponegoro.

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Abstract

Di Indonesia pada umumnya menggunakan lapisan permukaan konvensional berupa lapis tipis aspal beton (Lataston) atau Hot Rolled Sheet (HRS) dan lapis aspal beton (Laston) atau Asphalt Concrete (AC). Tetapi kinerja dari lapisan permukaan ini tidak terlalu memuaskan dan kerusakan dini sering terjadi. Kerusakan tersebut terlihat berupa terjadinya gelombang (corrugation) dan retak-retak (cracks). Hal tersebut sangat dimungkinkan karena kualitas material penyusun campuran aspal panas. Berdasarkan permasalahan tersebut perlu dilakukan penelitian tentang pengaruh filler spent catalyst RCC (limbah Pertamina) terhadap kinerja campuran aspal panas, dalam hal ini Lataston HRS-WC yang mengacu pada Spesifikasi Baru (2001). Hasil persiapan dan pengujian bahan baik agregat dan aspal serta penentuan gradasi campuran HRS-WC menunjukkan hasil sesuai persyaratan. Selanjutnya dilakukan penelitian tahap I untuk menentukan Kadar Aspal Optimum (KAO) dengan menggunakan metoda Marshall. Penelitian tahap II untuk mencari nilai Marshall pada kondisi standard (2x75 tumbukan) dan refusal density (2x400 tumbukan) untuk menentukan VIM, VMA, VFA, density, stabilitas, Flow, MQ, serta IRS perendaman standard. Sedangkan pengujian perendaman modifikasi untuk menentukan nilai indek durabilitas pertama (r, R) dan nilai indek durabilitas kedua (Sa, SA). Pengujian dilakukan dengan campuran HRS-WC pada variasi dust proportion rendah (0,55), sedang (0,90) dan tinggi (1,25) pada masing-masing penggunaan jenis filler (spent catalyst dan Abu Batu konvensional). Penelitian tahap I memperoleh KAO untuk campuran dengan filler spent catalyst 8,375 % sementara untuk campuran dengan menggunakan filler abu batu konvensional didapatkan nilai 7,225 %. Dari hasil penelitian tahap II dapat terlihat bahwa hubungan nilai Marshall dan variasi dust proportion terhadap lama perendaman, untuk hasil analisa void memenuhi persyaratan pada tingkat kepadatan standar (2x75 tumbukan) dan kepadatan refusal density (2x400 tumbukan) terkecuali nilai VIM untuk campuran yang menggunakan filler spent catalyst hanya masuk syarat spesifikasi VIM3-6 pada campuran dengan dust proportion 0,90 dan 1,25 sedangkan pada campuran dengan filler abu batu konvensional terjadi pada campuran dengan DP 1,25 saja. Disamping itu nilai VFA pada campuran dengan filler spent catalyst semuanya masuk spesikasi pada keseluruhan variasi DP, tetapi pada campuran dengan menggunakan filler abu batu konvensional hanya pada campuran dengan DP 1,25. Nilai pengujian stabilitas, flow, MQ pada kondisi standard dan kondisi refusal density untuk semua variasi penggunaan filler dan dust proportion serta lama perendaman memenuhi persyaratan. Pengujian perendaman modifikasi menghasilkan Indek Durabilitas I, dimana lama perendaman mengakibatkan naiknya nilai indek (r dan R) baik pada kondisi standar dan kondisi refusal density, yang berarti HRS-WC semakin kehilangan kekuatan. Perendaman modifikasi juga menghasilkan Indek Durabilitas II, dimana lama perendaman mengakibatkan turunnya nilai Indek Stabilitas Sisa (Sa) baik pada kondisi standar maupun refusal density, yang berarti tingkat keawetan HRS-WC semakin kecil. Hal ini disebabkan semakin lama HRS-WC terendam air akan membuat kerapatan campuran berkurang dan kemampuan aspal mempertahankan ikatan antar agregat baik kohesi maupun adhesi melemah. Dari analisa terhadap data hasil dari penelitian di laboratorium didapatkan campuran dengan filler spent catalyst menghasilkan analisa Marshall yang optimum pada DP 0,9 dan DP 1,25 sementara pada campuran dengan filler abu batu konvensional DP 1,25 saja. Kebutuhan kadar dust proportion tinggi dikarenakan campuran yang digunakan adalah HRS-WC yang mempunyai karakteristik bergradasi senjang sehingga kebutuhan terhadap aspal tinggi yang akan berdampak kebutuhan terhadap filler juga tinggi. Sehingga perlu kiranya dilakukan penelitian lanjutan apabila jenis campuran yang digunakan adalah campuran asphalt concrete semisal ACWC. Sheet (HRS) and endue concrete asphalt (Laston) or Asphalt Concrete (AC). But the performance of this surface course do not too satisfy and damage early often happened. The damage seen in the form of the happening of wave (corrugation) and cracks. The mentioned very conducive because quality of material formation of hot asphalt mixture. Pursuant to the problems require to be research about the influence of spent catalyst RCC filler (waste of Pertamina) to hot asphalt mixture performance, in this case Lataston HRS-WC which related to the New of Specification (2001). The findings of preparation and test to the sample material, the amount of both aggregate and asphalt, as well as the gradation of HRS-WC mixture indicate that the sample materials meet the requirement of latest specification. Marshall method was applied at the first term research to find the Optimum Asphalt Content (OAC). The second term research was aimed to get the value of Marshall at standard condition (2 x 75 blows) as well as the value of refusal density (2 x 400 blows) which was aimed to discover VIM, VMA, VFA, density, stability, flow, MQ, and the IRS of standard immersion. The modification of immersion was applied to find the first value of durability index (r,R) and the value of second durability index (Sa, SA). The research have done with mixture of HRS-WC at variation of low dust proportion (0,55), middle dust proportion (0,90) and high dust proportion (1,25) with usage type of filler (spent catalyst and conventional ash stone). First term research found that the OAC value for mixture with spent catalyst RCC was 8,375 % and the value for mixture with conventional ash stone was 7,225 %. The second term research showed that there was a correlation between Marshall value, dust proportion and the immersion time, the result of void analysis met the requirement at standard density level (2x75 blows) and refusal density level (2x400 blows) except the value of Void In the Mix (VIM) for mixture with spent catalyst filler only passed the specification VIM3-6 at dust proportion of 0,90 and 1,25 while at mixture with conventional ash stone happened at mixture with DP 1,25 only. The value of Void Filled with Asphalt (VFA) at mixture with catalyst spent filler altogether enter the specification at overall of dust proportion variation, but at mixture by using conventional ash stone only passed at mixture with dust proportion 1,25. The value examination of stability, flow, MQ at standard condition and refusal density for all variation usage all variation of dust proportion and also variation of immersion was fulfill conditions of specification. Modification of immersion test discovered Durability I Index, where immersion time caused the increasing of index score (r and R) at both standard condition and refusal density condition. This indicates that the HRS-WC losses its power. Modification of immersion also discovered Durability II index, where immersion time leads index score of residual stability (Sa) to decrease at both standard and refusal density condition. This result indicates that the duration level of the HRS-WC is getting low. This also shows that the longer time HRS-WC immersed in water resulted in decreasing density level of the mixture and decreasing the capability of asphalt in maintaining cohesion and adhesion of aggregate. From analysis to data result from research in laboratory got mixture with spent catalyst filler yield analysis of Marshall optimum at mixture with dust proportion 0,9 and 1,25 but at mixture with conventional ash stone happened at mixture with dust proportion 1,25 only. Requirement of rate of dust proportion more highly because of mixture using HRS-WC that having characteristic of different gradation so that requirement to high asphalt and also affect to requirement of high filler too. So that need to continuation research if mixture type of asphalt concrete for example asphalt concrete wearing coarse (AC-WC).

Item Type:Thesis (Masters)
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Postgraduate Program > Master Program in Civil Engineering
ID Code:17953
Deposited By:Mr UPT Perpus 2
Deposited On:28 Jul 2010 10:04
Last Modified:28 Jul 2010 10:04

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