Water Resistance Evaluation of Asphalt Concrete Wearing Course Made with Crumb Rubber of Motorcycle Tire Waste

2016 ◽  
Vol 845 ◽  
pp. 404-407 ◽  
Author(s):  
Henri Siswanto ◽  
Bambang Supriyanto ◽  
Luthfil Abid
Keyword(s):  
Experimental Study ◽  
High Resistance ◽  
Asphalt Concrete ◽  
Water Resistance ◽  
Crumb Rubber ◽  
Resistance Evaluation ◽  
Dry Process ◽  
High Rainfall ◽  
Sieve Size ◽  
Asphalt Mix

Indonesia has a tropical climate with high rainfall and experiences frequent flooding which are a major causes of road deterioration. It requires solutions one of which is to formulate an asphalt mix that has a high resistance to water, and one of the answers is to mix Crumb Rubber (CRM) with asphalt mix. The purpose of this experimental study was to investigate the effect of crumb rubber of motorcycle tire waste (CRM) on the water resistance of asphalt concrete wearing course (ACWC). CRM, passing #30 sieve size, was mixed with aggregate, five levels of CRM content were investigated in this study, namely, 0%, 0.5%, 1%, 1.5% and 3.0% respectively by weight of mix. A dry process was used in the blending of mixtures. Three of six specimens from each group were tested under standard Marshall. The remaining specimens were tested by immersing in a bath at 60°C for 24 hours. The results indicated that the 0.5% CRM mixture was the best.

Microstructure analysis and mechanical performance of crumb rubber modified asphalt concrete using the dry process

2020 ◽  
Vol 259 ◽  
pp. 119662 ◽  
Author(s):  
Israel Rodríguez-Fernández ◽  
Farrokh Tarpoudi Baheri ◽  
Maria Chiara Cavalli ◽  
Lily D. Poulikakos ◽  
Moises Bueno
Keyword(s):  
Asphalt Concrete ◽  
Mechanical Performance ◽  
Crumb Rubber ◽  
Microstructure Analysis ◽  
Dry Process ◽  
Modified Asphalt

Arkansas Experience with Crumb Rubber Modified Mixes Using Marshall and Strategic Highway Research Program Level I Design Methods

1996 ◽  
Vol 1530 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Gary V. Gowda ◽  
Kevin D. Hall ◽  
Robert P. Elliott
Keyword(s):  
Asphalt Concrete ◽  
Hot Mix Asphalt ◽  
Heavy Traffic ◽  
Percent Level ◽  
Crumb Rubber ◽  
Aggregate Gradation ◽  
Dry Process ◽  
Wet Process ◽  
Asphalt Rubber ◽  
Level I

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.

Problems of effectiveness evaluation of modifiers introduced into asphalt concrete mixtures according to «Russian dry process»

2021 ◽  
Vol 2 ◽  
pp. 2-9
Author(s):  
A.A. Berlin ◽  
◽  
V.G. Nikolskiy ◽  
I.A. Krasotkina ◽  
T.V. Dudareva ◽  
...  
Keyword(s):  
High Temperature ◽  
Asphalt Concrete ◽  
Crumb Rubber ◽  
Thermoplastic Elastomers ◽  
Effectiveness Evaluation ◽  
Distinctive Features ◽  
Waste Tires ◽  
Dry Process ◽  
Concrete Mixtures ◽  
Temperature Shear

The processes of introducing modifiers based on crumb rubber (CR) of waste tires into asphalt concrete mixtures are described. The distinctive features of the «Russian dry process» (PCT) modification of asphalt concrete (AС) with powder |modifiers (PM) obtained by the method of high-temperature shear grinding (HTSG) of CR or co-grinding of CR with thermoplastic elastomers are considered. An approach to the effectiveness evaluation of modification by rheological tests based on the Superpave methodology of «model binders» prepared under conditions close to those for the preparation of AС is proposed.

Structural Layer Coefficients of Crumb Rubber–Modified Asphalt Concrete Mixtures

1997 ◽  
Vol 1583 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Mustaque Hossain ◽  
Affan Habib ◽  
Todd M. Latorella
Keyword(s):  
Asphalt Concrete ◽  
Crumb Rubber ◽  
Asphalt Pavements ◽  
Falling Weight Deflectometer ◽  
Average Value ◽  
Concrete Mixtures ◽  
Mechanistic Approach ◽  
Asphalt Mix ◽  
Falling Weight ◽  
Structural Layer

Structural layer coefficients for crumb rubber–modified (CRM) asphalt concrete mixtures were developed from the backcalculated moduli values using the falling weight deflectometer (FWD) test results on in situ pavements. Several test sections of recently built crumb rubber–modified pavements on three routes in Kansas (I-135, K-32 and US-56) were selected for this study. I-135 is a newly built asphalt pavement and the other two are gap-graded CRM overlays. Deflection data were collected with a Dynatest 8000 FWD at 21 locations at 7.5-m intervals on each test section on I-135, 22 locations on K-32, and 11 locations on US-56. For CRM asphalt mix overlays, the average surface layer coefficients from the equal mechanistic approach of analysis were found to vary between 0.11 and 0.46 with most values falling around 0.30. This indicates a lower structural layer coefficient value for the asphalt-rubber mix compared with the conventional asphalt concrete. For newly constructed CRM asphalt pavements, the structural layer coefficients varied from 0.25 to 0.48, with the average value around 0.35. These values are close to the design layer coefficient values used for conventional asphalt concrete layers. Large variabilities in computed structural layer coefficients for the rubblized jointed reinforced concrete pavement were observed. The structural layer coefficients computed for this layer varied from 0.10 to 0.35.

Marshall Characteristics of Asphalt Concrete Wearing Course Using Crumb Rubber Modified of Motorcycle Tire Waste as Additive

2019 ◽  
Vol 961 ◽  
pp. 57-61
Author(s):  
Pria Rizky Candra ◽  
Henri Siswanto
Keyword(s):  
Asphalt Concrete ◽  
Crumb Rubber ◽  
Mineral Aggregate ◽  
Asphalt Mix ◽  
Marshall Stability

The significance of this research is to find out the effect of adding Crumb Rubber Motorcycle Tire Waste (CRM-MTW) on asphalt concrete wearing course (ACWC) mix. Two sizes of CRM-MTW that are used are CRM that passes filters identified as numbers 50 and 100, while the contents of the CRM-MTW are 0%, 0.5%, 1%, 1.5%, 3%, 4.5%, and 6% of the aggregate weight. Marshall Method is used in this research. The analysis is based on Marshall parameters namely, stability, flow, Marshall Quotient (MQ), Void in the Mix (VIM), Void in the Mineral Aggregate (VMA), and Void Filled Asphalt (VFA). The result of this research indicates that the size of CRM-MTW, No. 50 and No. 100, affects Marshall stability of conventional asphalt mix. Best CRM-MTW addition is CRM-MTW No. 100 with the content of 1%.

Experimental Study on Ratio of Bending-Compressive Strength of the Crumb Rubber Concrete Modified by Latex

2014 ◽  
Vol 941-944 ◽  
pp. 761-764
Author(s):  
Wei Li ◽  
Zhen Huang ◽  
Xiao Chu Wang ◽  
Zi Sheng Zang
Keyword(s):  
Mechanical Property ◽  
Experimental Study ◽  
Compressive Strength ◽  
Surface Modification ◽  
Flexural Strength ◽  
Crumb Rubber ◽  
Interface Effect ◽  
Rubber Particles ◽  
Crumb Rubber Concrete ◽  
Rubber Concrete

The cementitiousness between rubber particles and cement-based material could be raised because of the surface modification of rubber,thus enhance the mechanical property of crumb rubber concrete and improve the interface effect of rubber particles.We had researched the change regulation about the ratio of bending-compressive strength of the crumb rubber concrete modified by latex,the concrete with various quantity of rubber,under the condition dosage of latex is 0.5% of cement quality.The result of experimental prove that,compressive strength, splitting tensile and flexural strength could be enhanced because of latex injecting,and the ratio of bending-compressive strength could be enhanced at the same time.

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