scholarly journals Deformasi Permanen dan Modulus Resilien Campuran AC-BC Modified Menggunakan Aspal Multigrade

2019 ◽  
Vol 7 (2) ◽  
pp. 60-68
Author(s):  
Desy Yofianti
Keyword(s):  
Climate Change ◽  
High Pressure ◽  
Asphalt Concrete ◽  
Resilient Modulus ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Flexible Pavement ◽  
Traffic Load ◽  
Wheel Tracking Test ◽  
Wheel Tracking

Multigrade asphalt use is an alternative method for handling road deterioration problem, e.g. a rutting, due to the repetitive traffic load and high pressure from vehicle wheels. In addition, the multigrade asphalt has been widely used to reduce temperature sensitivity of the asphalt mixture in flexible pavement due to an unpredictable climate change. Rutting is also caused by the accumulation of permanent deformations from all layers in the pavement structure. This study aims to analyze the permanent deformation value and the resilient modulus of an Asphalt Concrete Binder Course (AC-BC) modified mixture through the use of multigrade asphalt. The Wheel Tracking Test and UMATTA Test were used to test the specimens. The Tests on samples were carried out at temperatures of 35oC and 50oC. The results showed that the permanent deformation value of the AC-BC with multigrade asphalt had a better deformation resistance than the 60/70 pen bitumen mixture at 35oC. At the temperature of 50oC, the multigrade asphalt mixture had a smaller permanent deformation value (0.92 mm) compared to the 60/70 pen bitumen mixture. At the temperature of 35oC, multigrade asphalt mixture had a resilient modulus value of 1.04 times greater than the 60/70 pen bitumen mixture and at the temperature of 50oC, this mixture had a resilient modulus value of 1.16 times greater than the 60/70 pen bitumen mixture. Therefore, this study concluded that the increase/decrease of value of permanent deformation and resilient modulus were influenced by the temperature and types of asphalt in the mixture.

Evaluation the Use of Tailings as a Filler in Asphalt Concrete - Wearing Course Based on Results of Laboratory Tests to the Indonesian Specification for Hot-Mix Asphalt Year 2010

2013 ◽  
Vol 723 ◽  
pp. 328-336
Author(s):  
Lilies Widojoko
Keyword(s):  
Asphalt Concrete ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Pavement Materials ◽  
Road Pavement ◽  
Laboratory Test Results ◽  
Influence Of Water ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Pavement Material

This paper discusses the use of tailings for road pavement, especially for Asphalt Concrete Wearing Course (AC-WC) based on laboratory test results. The benefits of this study are: (1) diversification of road pavement materials, (2) the use of tailings optimally as road pavement material, (3) reduce the potential for environmental contamination. Tests on the characteristics of the tailings conducted to evaluate the properties related to its performance as a blending component. In this study, the percentage of tailings by 15%, 20% and 25% is added to the AC-WC mixture. Mix design performed by the method of Marshall. In the optimum asphalt content (OAC) the influence of water resistance and resistance to permanent deformation of sample are evaluated. The best performance is use of tailings by 20%. This mixture is not a mixture of the sensitive to inaccuracies in the asphalt mixture compared with the mixture using tailing by 15% and 25%. Wheel tracking test showed that the mixture has the smallest permanent deformation that is 2 mm.While resistance to water and temperature same for all all mixtures. This study shows that the tailings could be used as a road pavement material, which replaces the sand-sized aggregates.

Fine Aggregate Angularity Effects on Rutting Resistance of Asphalt Mixture

2013 ◽  
Vol 65 (3) ◽  
Author(s):  
Izzul Ramli ◽  
Haryati Yaacob ◽  
Norhidayah Abdul Hassan ◽  
Che Ros Ismail ◽  
Mohd Rosli Hainin
Keyword(s):  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Fine Aggregate ◽  
Natural Sand ◽  
Rutting Resistance ◽  
Fine Aggregates ◽  
Crushed Granite ◽  
Wheel Tracking Test ◽  
The Stability ◽  
Wheel Tracking

Fine Aggregate Angularity (FAA) has been identified as one of the important aggregate properties contributing to the stability of Hot Mix Asphalt (HMA) and its resistance against permanent deformation. The performance of dense graded asphalt mixture is significantly influenced by the shape, angularity and surface texture of fine aggregates. This study determines the FAA for different types of aggregates namely granite and natural sand and evaluates the rutting resistance of AC 10 mixture added with the aforementioned aggregates. Marshall test and wheel tracking test were carried out in order to assess stability and rutting resistance. It was found from FAA test, crushed granite has higher percentage of FAA (46%) compared to natural sand (37%). With higher FAA value, crushed granite mix was found to have better stability, stiffness, and flow compared to specimen with natural sand. From wheel tracking test, it was observed that the rut depth for specimen with crushed granite is lower compared to specimen with natural sand. Therefore it can be concluded that fine aggregates with more angular shape, provides better stability and increase the rutting resistance.

scholarly journals Assessment Resistance Potential to Moisture Damage and Rutting for HMA Mixtures Reinforced by Steel Fibers

2020 ◽  
Vol 6 (9) ◽  
pp. 1726-1738
Author(s):  
Ahmed Abbas Saleem ◽  
Mohammed Qadir Ismael
Keyword(s):  
Elevated Temperatures ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Evaluation Process ◽  
Moisture Damage ◽  
Steel Fibres ◽  
Compressive Strength Test ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Temperature Susceptibility

Rutting is mainly referring to pavement permanent deformation, it is a major problem for flexible pavement and it is a complicated process and highly observed along with many segments of asphalt pavement in Iraq. The occurrence of this defect is related to several variables such as elevated temperatures and high wheel loads. Studying effective methods to reduce rutting distress is of great significance for providing a safe and along-life road. The asphalt mixture used to be modified by adding different types of additives. The addition of additives typically excesses stiffness, improves temperature susceptibility, and reduces moisture sensitivity. For this work, steel fibres have been used for modifying asphalt mixture as they incorporated in the specimens by three percentages designated as 0.5, 1.0 and 1.5 % by the weight of asphalt mixture. The evaluation process based on conducting Marshall Test, Compressive strength test, and the wheel tracking test. The optimum asphalt content was determined for asphalt mixture. The results of the Marshall quotient and the index of retained strength of modified mixtures were increased by 44.0 and 17.38% respectively with adding 1.0% of steel fibres compared with the conventional mixture. The rut depth and dynamic stability were determined by using a wheel tracking test at two various testing temperatures of 45 and 55°C and two applied stresses of 70 and 80 psi. Results show that adding 1% of steel fibres to asphalt mixtures is very effective in increase the rutting resistance and reduce moisture damage.

scholarly journals MECHANICAL PERFORMANCE OF ASPHALT MIXTURE CONTAINING CUP LUMP RUBBER

2019 ◽  
Vol 81 (6) ◽  
Author(s):  
Norfazira Mohd Azahar ◽  
Norhidayah Abdul Hassan ◽  
Ramadhansyah Putra Jaya ◽  
Hasanan Md. Nor ◽  
Mohd Khairul Idham Mohd Satar ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Resilient Modulus ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Modified Asphalt ◽  
Dynamic Creep ◽  
Aging Conditions ◽  
Public Work Department ◽  
Indirect Tensile

The use of cup lump rubber as an additive in asphalt binder has recently become the main interest of the paving industry. The innovation helps to increase the natural rubber consumption and stabilize the rubber price. This study evaluates the mechanical performance of cup lump rubber modified asphalt (CMA) mixture in terms of resilient modulus, dynamic creep and indirect tensile strength under aging conditions. The CMA mixture was prepared using dense-graded Marshall-designed mix and the observed behavior was compared with that of conventional mixture. From the results, both mixtures passed the volumetric properties as accordance to Malaysian Public Work Department (PWD) specification. The addition of cup lump rubber provides better resistance against permanent deformation through the enhanced properties of resilient modulus and dynamic creep. Furthermore, the resilient modulus of CMA mixture performed better under aging conditions.  

Image processing procedure to quantify the internal structure of porous asphalt concrete

2019 ◽  
Vol 15 (1) ◽  
pp. 206-226 ◽  
Author(s):  
Kabiru Abdullahi Ahmad ◽  
Norhidayah Abdul Hassan ◽  
Mohd Ezree Abdullah ◽  
Munder A.M. Bilema ◽  
Nura Usman ◽  
...  
Keyword(s):  
Internal Structure ◽  
Asphalt Concrete ◽  
Functional Performance ◽  
Resilient Modulus ◽  
Asphalt Mixture ◽  
Content Type ◽  
Porous Asphalt ◽  
X Ray ◽  
Air Void ◽  
Aggregate Interlock

Purpose In order to fully understand the properties of porous asphalt, investigation should be conducted from different point of views. This is from the fact that porous asphalt mixture designed with the same aggregate gradation and air void content can give different infiltration rate due to the different formation of the internal structure. Therefore, the purpose of this paper is to investigate the micro-structural properties and functional performance of porous asphalt simultaneously. Design/methodology/approach The aim is to develop imaging techniques to process and analyze the internal structure of porous asphalt mixture. A few parameters were established to analyze the air void properties and aggregate interlock within the gyratory compacted samples captured using a non-destructive scanning technique of X-ray computed tomography (CT) throughout the samples. The results were then compared with the functional performance in terms of permeability. Four aggregate gradations used in different countries, i.e. Malaysia, Australia, the USA and Singapore. The samples were tested for resilient modulus and permeability. Quantitative analysis of the microstructure was used to establish the relationships between the air void properties and aggregate interlock and the resilient modulus and permeability. Findings Based on the results, it was found that the micro-structural properties investigated have successfully described the internal structure formation and they reflect the results of resilient modulus and permeability. In addition, the imaging technique which includes the image processing and image analysis for internal structure quantification seems to be very useful and perform well with the X-ray CT images based on the reliable results obtained from the analysis. Research limitations/implications In this study, attention was limited to the study of internal structure of porous asphalt samples prepared in the laboratory using X-ray CT but can also be used to assess the quality of finished asphalt pavements by taking core samples for quantitative and qualitative analysis. The use of CT for material characterization presents a lot of possibilities in the future of asphalt concrete mix design. Originality/value Based on the validation process which includes comparisons between the values obtained from the image analysis and those from the performance test and it was found that the developed procedure satisfactorily assesses the air voids distribution and the aggregate interlock for this reason, it can be used.

scholarly journals Utilización de técnicas petrográficas para evaluar los efectos inducidos del NaCl, condiciones climáticas extremas y el paso del tráfico en las superficies de las carreteras españolas

2017 ◽  
Vol 67 (328) ◽  
pp. 138 ◽  
Author(s):  
A. P. Pérez-Fortes ◽  
M. J. Varas-Muriel ◽  
P. Castiñeiras
Keyword(s):  
El Paso ◽  
Asphalt Mixture ◽  
Polarized Light ◽  
Nacl Solution ◽  
Winter Maintenance ◽  
Traffic Conditions ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Design Construction

The asphalt surface layer is the most exposed to weather and traffic conditions on roads, especially those subjected to winter maintenance. Therefore, a deep knowledge of the mechanisms which can damage this layer is necessary to improve its design, construction and long-term use. With this purpose, two types of asphalt mixtures used on roads from NW Spain were subjected to durability tests (freezing-thaw and thermal-stress) with a saturated NaCl solution. After the durability tests, a wheel tracking test was performed on the samples, and the resultant material was analyzed by optical polarized light and fluorescence microscopy. This analysis showed that the binder-aggregate low adhesion was the main responsible of the asphalt mixture damage. This damage was concentrated in the aggregates because the binder acted as an impermeable wall. Consequently, the NaCl solution penetrated and degraded the aggregates quickly and strongly.

An approach to investigate coarse aggregates movement of asphalt mixture based on wheel tracking test

2021 ◽  
Vol 309 ◽  
pp. 125161
Author(s):  
Wenchang Liu ◽  
Hongwei Lin ◽  
Hongyu Guo ◽  
Hongchao Zhang ◽  
Shuguang Zhang ◽  
...  
Keyword(s):  
Asphalt Mixture ◽  
Coarse Aggregates ◽  
Wheel Tracking Test ◽  
Wheel Tracking
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