PENGARUH PENGGUNAAN ASBUTON BUTIR T.5/50 UNTUK PERKERASAN ASPAL SMA (STONE MATRIX ASPHALT)

Jalan raya sebagai salah satu sarana transportasi darat, kegunaannya dirasakan semakin penting untuk menunjang peningkatan perekonomian nasional. Salah satu solusi untuk membangun jalan ini adalah dengan mencoba penggunaan perkerasan aspal SMA (Stone Matrix Asphalt). Stone Matrix Asphalt (SMA) adalah beton aspal dengan campuran panas terdiri dari agregat kasar, agregat halus, bahan pengisi serta bahan pengikat (aspal). Tujuan penelitian untuk mengetahui pengaruh penggunaan Asbuton butir T.5/20 untuk perkerasan aspal Stone Matrix Asphalt terhadap karakteristik Marshall. Material yang digunakan pada campuran yaitu agregat kasar yang berasal dari pangkalan, agregat halus, aspal pen 60/70 serta asbuton butir T.5/20 yang berasal dari Pulau Buton Sulawesi Tenggara. Pengujian Marshall untuk aspal Stone Matrix Asphalt pada campuran agregat dengan kadar aspal 4,5%, 5%, 5,5% dan 6% diperoleh nilai kadar aspal optimum sebesar 5,75%. Setelah didapatkan kadar aspal optimum dilakukan modifikasi dengan penambahan asbuton butir T.5/20 pada campuran agregat sebanyak 2%, 2,5%, dan 3%. Semakin banyak penggunaan asbuton butir pada campuran maka nilai stabilitas yang didapatkan semakin meningkat nilai nya. Stabilitas merupakan indikator kekuatan lapis perkerasan dalam memikul beban lalu-lintas. Aspal Stone Matrix Asphalt didesain untuk mendapatkan kadar rongga yang besar, sedangkan persentase rongga VMA yang didapatkan nilainya semakin kecil dan tidak memenuhi syarat spesifikasi.

Penggunaan Limbah Beton Sebagai Agregat Pada Campuran Stone Matrix Asphalt Halus

Limbah beton di Indonesia pada umumnya belum dipergunakan dengan baik dan dibiarkan tanpa ada penanganan yang akan menimbulkan permasalahan tersendiri bagi lingkungan, maka dari itu perluh pengolahan supaya bisa digunakan menjadi bahan yang lebih berguna. Penelitian ini bertujuan untuk mengetahui karakteristik limbah beton untuk digunakan dalam campuran Stone Matrix Asphalt, mengetahui komposisi campuran Stone Matrix Asphalt menggunakan limbah beton dan mengetahui kemampuan campuran terhadap pengaruh suhu dan air setelah perendaman. Metodologi penelitian menggunakan metode Marshall Konvensional untuk mendapatkan karakteristik limbah beton yang digunakan dalam campuran Stone Matrix Asphalt dan Marshall Immersion untuk mendapatkan nilai stabilitas Marshall Sisa. Hasil penelitian menunjukkan bahwa karakteristik agregat limbah beton memenuhi persyaratan untuk campuran perkerasan jalan. Berdasarkan rancangan komposisi campuran didapatkan komposisi campuran untuk kadar aspal 6,00% agregat kasar yaitu 69,00%, agregat halus 15,67 %, dan filler 8,33. Penggunaan campuran Stone Matrix Asphalt Halus melalui pengujian Karakteristik campuran Marshall Konvensional diperoleh nilai Stabilitas, Kelelehan (flow), Void In Mix (VIM), Void In Mix Aggeregate (VMA), memenuhi spesifikasi, hasil pengujian Marshall Immersion diperoleh indeks perendaman sebesar atau Kekuatan Sisa 92,02% artinya campuran tahan terhadap lamanya perendaman.

Effects of fillers on stability properties of stone matrix asphalt mix

Failures in asphalts occurs because of the development of vehicles with high intensity of loads tends to increase in usage of automobiles which results in use of rut resistant Bituminous mixes in the surface course. Rutting and Fatigue cracking are the results of the damage caused due to primary parameters. Cracking can be prevented by maintaining Probable temperature during the preparation of bituminous mix to the laying of mixes. To prevent rutting, the Stone lattice black-top also known as Stone Matrix Asphalt (SMA) can be utilized as a fraction of the bituminous layer. In this study SMA is preferred to check its implementation in all viewpoint such as stability (kg), volume of voids in mineral aggregates (VMA,) deformation (mm), with the usage of different types of Non Conventional fillers which enhances the properties of the mix. Fillers plays a vital role in improving the stability and durability, where as reduction leads to increase voids in the mix. Distinctive fillers like glass powder, magnetite, cement kiln powder and fly ash have been used in the mixes. Twelve sets of test sample were set up by utilizing typical sorts of filler having varied sum in the mixture. Samples prepared at diverse asphalt contents(4.5%,5.5%,6.5%) respectively varying fillers. The Marshall properties obtained for the conventional filler flyash has been set up to exhibit higher stability contrasted with magnetite, glass powder, cement kiln Powder, but have satisfied the minimum requirements. Magnetite filler indicates least deformation at 5.5 % bitumen content and the rate of air voids from the results they are observed to be diminished with the expansion of bitumen substance.

Evaluation of the Influence of Antistripping Agents on Water Sensitivity of the Stone Matrix Asphalt Mixture Modified by Recycled Ground Tire Rubber and Waste Polyethylene Terephthalate

This research intends to evaluate the effects of the waste polyethylene terephthalate (PET), antistripping agents (ASA), and ground tire rubber (GTR) on the performance properties of the stone matrix asphalt (SMA) mix binder/water damage resistance. Liquid antistripping agents, added to 85/100 penetration grade binder to evaluate the ASA effects, were A (M500), B (EvothermM1), and C (LOF-6500). Tests conducted to study the modified bitumen’s rheological properties included softening point, penetration, rotational viscosity (RV), and dynamic shear rheometer (DSR), and tests performed in order to examine the moisture sensitivity of the modified mix were the Texas boiling and resilient modulus (MR), fracture energy (FE), and indirect tensile strength (ITS) ratio tests. Results showed that the MR, ITS, and FE of asphalt mixes modified with crumb rubber (CR), ASA, and PET were improved. Adding 50% PET, 50% CR, and ASA (B) led to the highest tensile strength, resilient modulus, and fracture energy ratios showing a perfect water susceptibility of the mentioned mix.

Testing of Coarse SMA Using Tapparan River Stone, Tana Toraja Regency

This experiment is to intended of Tapparan river stone in a Stone Matrix Asphalt (SMA). The method in this experiment is to test character of every agregate and filler. then make a composition of Stone Matrix Asphalt (SMA) mixture Marshall testing to get the characteristics and the Marshall Immersion test for the remaining Marshall Stability value. The results of research, shows the character of the pavement material in the form of Tapparan River rock, Tana Toraja Regency, meet some specific for coating material. with conventional Marshall Test, the characteristics with asphalt content of 6.00%, 6.25%, 6.50%, 6.75%, and 7.00% meet the General Specifications. From the Marshall Immersion test, it was obtained that the remaining Marshall Stability was 95.10% with asphalt 7.00% fulfilling the requirements, namely> 90% accordance with the General Specifications.