Temperature Effect on the Deformation of the Recycled Hot-Mix Asphalt Concrete with Nano Crumb Rubber as an Added Material with Wheel Tracking Machine

Unmodified and crumb rubber modified mixes conforming to the Arkansas State Highway and Transportation Department Type II surface course specifications were designed for heavy traffic conditions and environmental conditions typical to Arkansas by using the Marshall and Superpave Level I methods. Specimens prepared at appropriate design asphalt contents were evaluated for both volumetric and performance considerations. Three mix types, an unmodified hot-mix asphalt concrete, a dry process rubber modified asphalt, and a wet process asphalt rubber, were included in the investigation. For the asphalt cement, crumb rubber, aggregate type, and aggregate gradation used, the design asphalt content and the VMA were reduced for the SHRP Level I method relative to the Marshall method. Incorporation of crumb rubber into hot-mix asphalt concrete provided increased rutting resistance; however, the rubber modified mixes did not show enhanced resilient and tensile properties when tested at 25°C. Also, the performance-related properties of the SHRP Level I asphalt-rubber mixes (5, 10, and 15 percent A-R blends) evaluated did not differ significantly at 5 percent level of significance.

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Influence of Void in Mix on Rutting Performance Hot Mix Asphalt Pavement with Crumb Rubber Additive

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.753.321 ◽

2017 ◽

Vol 753 ◽

pp. 321-325 ◽

Cited By ~ 2

Author(s):

Rerhard Halomoan Limbong ◽

Sigit Pranowo Hadiwardoyo ◽

Raden Jachrizal Sumabrata ◽

Raden Hendra Ariyapijati

Keyword(s):

Asphalt Concrete ◽

Hot Mix Asphalt ◽

Asphalt Mixture ◽

Crumb Rubber ◽

Tropical Regions ◽

Vehicle Loads ◽

Wheel Loading ◽

Pavement Construction ◽

Additive Materials ◽

Marshall Stability

Pavement construction is expected to support vehicle loads and be weather- and water-resistant. In tropical regions with high temperatures and high rainfall intensity, pavement design and construction must consider the effects of temperature. The addition of crumb rubber (CR) can improve the performance of asphalt concrete in response to vehicle loads and ambient temperature. Fiber-shaped CR can be mixed with the aggregate and bitumen in asphalt concrete. In this study, CR was added to the aggregate in a type of asphalt concrete for wearing courses known as hot mix asphalt (HMA). A series of tests were conducted using the Marshall standard or immersion and wheel tracking machine (WTM). CR was added to the HMA at 5%, 10%, 15%, and 20% in aggregate and further mixed with bitumen with 60/70 penetration grade. The additive materials increased the value of the Marshall stability compared to the virgin asphalt mixture. However, this result was not obtained in the WTM test; the addition of CR increased rutting compared to the asphalt mixture without additive. The addition of CR to HMA reduced the voids in the mix, and weakened the capacity of the asphalt concrete to support repeated vehicle wheel loading.

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Effect of aggregate gradation on rutting of asphalt concrete by using a wheel tracking device in Vietnam

Journal of the Mechanical Behavior of Materials ◽

10.1515/jmbm-2018-2007 ◽

2018 ◽

Vol 27 (5-6) ◽

Author(s):

Long Nguyen Hoang ◽

Thanh Hai Le

Keyword(s):

Asphalt Concrete ◽

Hot Mix Asphalt ◽

Great Influence ◽

Aggregate Size ◽

Maximum Aggregate Size ◽

Aggregate Gradation ◽

Tracking Device ◽

Wheel Tracking ◽

The Relationship

AbstractThis paper presents the relationship between rutting and aggregate gradation of asphalt concrete using a wheel tracking device at 60°C, with 30,000 cycles in air. The experiment was carried out on hot mix asphalt samples using three aggregate gradations which included maximum aggregate sizes of 9.5 mm, 12.5 mm and 19 mm. The result of the experiment showed that the maximum aggregate size has a great influence on the rutting of asphalt concrete.

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Effect of Modifiers on the Rutting, Moisture-Induced Damage, and Workability Properties of Hot Mix Asphalt Mixtures

Applied Sciences ◽

10.3390/app10207145 ◽

2020 ◽

Vol 10 (20) ◽

pp. 7145 ◽

Cited By ~ 2

Author(s):

Jiandong Huang ◽

Yuantian Sun

Keyword(s):

Hot Mix Asphalt ◽

Crumb Rubber ◽

Asphalt Mixtures ◽

Creep Recovery ◽

Multiple Stress Creep Recovery ◽

Indirect Tensile ◽

Tracking Device ◽

Wheel Tracking ◽

Styrene Butadiene ◽

Butadiene Styrene

The present study aims to examine the effect of modifiers (Styrene-Butadiene-Styrene and crumb rubber) on the rutting, moisture-induced damage, and workability properties of hot mix asphalt (HMA) mixtures. In this study, three types—namely, control (CB), crumb rubber-modified (CRMB), and polymer-modified (PMB)—of mixtures/binders were evaluated. The rutting properties were evaluated using a wheel tracking device and the Multiple Stress Creep Recovery (MSCR) test. The moisture-induced damage properties were evaluated using the Indirect Tensile Strength (modified Lottman) and bitumen bond strength (BBS) tests. The workability properties were evaluated using densification indices (Bahia and locking point method) and a viscosity test. The results indicate that CRMB mixtures were less workable and exhibited a better resistance to rutting than the PMB and CB mixtures. Further, the PMB mixtures had increased resistance to moisture-induced damage, while the effect of the CRMB mixtures was negligible compared to the CB mixtures.

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DAUR ULANG RECLAIMED ASPHALT PAVEMENT SEBAGAI BAHAN UTAMA CAMPURAN BETON ASPAL EMULSI UNTUK LAPIS PERMUKAAN

Jurnal Poli-Teknologi ◽

10.32722/pt.v18i1.1282 ◽

2019 ◽

Vol 18 (1) ◽

Author(s):

Anni Susilowati ◽

Andhika Kesuma

Keyword(s):

Asphalt Concrete ◽

Hot Mix Asphalt ◽

Asphalt Pavement ◽

Heavy Traffic ◽

Reclaimed Asphalt Pavement ◽

Road Maintenance ◽

Reclaimed Asphalt ◽

Asphalt Content ◽

Marshall Stability ◽

Wheel Tracking

ABSTRACTReclaimed Asphalt Pavement (RAP) material as a result of road maintenance by Scrapping-Filling-Overlay method is a waste material which had potential to be recovered as a surface layerof road. The maintenance in highway road of Indonesia used hot mix asphalt in general. But, hot mix asphalt are not environmentally friendly and makes energy wasting because it needs burning process at mixing. Those things are the main causes of this research. This asphalt concrete with RAP with cold mixing is expected to fulfill the requirements of asphalt concrete for heavy traffic. In this research is asphalt content variations at 6,5; 7,0; 7,5; 8,0; and 8,5% to total mixture. The results of this research shows that the highest Marshall stability could not reach minimum value of heavy loaded traffic, that is at emulsion asphalt content 7% only for 711 kg. Besides, the percentage of void in mixture (VIM), void filled with bitumen (VFB) and flow couldn’t fulfill the specification of SNI 8198:2015. With the result that optimum asphalt content cannot be obtained. Result of wheel tracking test could not be obtained too because the specimens collapse during the test.Key words : Emulsion asphalt, Reclaimed Asphalt Pavement, stability, Wheel Tracking MachineABSTRAKMaterial Reclaimed Asphalt Pavement (RAP) hasil dari pemeliharaan dengan metode Scrapping-Filling Overlay merupakan limbah yang berpotensi untuk dimanfaatkan kembali menjadi lapis permukaan. Pada umumnya penanganan jalan di Indonesia menggunakan campuran panas. Namun, campuran panas kurang ramah lingkungan dan tidak hemat energi. Karena membutuhkan proses pembakaran dalam proses pencampuran. Hal ini yang menjadi alasan utama penelitian ini. Beton aspal dengan bahan utama RAP dengan campuran dingin ini diharapkan mampu memenuhi syarat lapisan aspal beton untuk lalu lintas berat. Variasi pada penelitian ini adalah kadar aspal 6,5; 7,0; 7,5; 8,0; dan 8,5% terhadap total campuran. Hasil dari penelitian menunjukan bahwa stabilitas Marshall tertinggi tidak mampu mencapai nilai minimum untuk lalu lintas berat, yaitu pada kadar aspal emulsi 7% hanya sebesar 711 kg. Selain itu prosentase rongga dalam campuran (VIM), rongga terisi aspal (VFB) serta kelelehan tidak memenuhi spesifikasi dari SNI 8198:2015. Sehingga, kadar aspal optimum tidak didapatkan. Hasil dari pengujian alur roda juga tidak didapatkan karena benda uji amblas ketika pengujian dilakukan.Kata kunci : Aspal emulsi, Reclaimed Asphalt Pavement, stabilitas, Wheel Tracking Machine

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