Effect of Aggregate Type and Rate of Temperature Change on Fracture Strength of Asphalt Concrete

Date

2012-06-02

Author

Quadır, Adnan
Güler, Murat

Metadata

Show full item record

Item Usage Stats

162
views

0
downloads

One of the main distress types in asphalt concrete pavements is the low temperature cracking due to large variation of daily temperatures. Even though researchers around the world studied the effect of a number of mix design variables on the fracture strength of asphalt concrete, the rate of temperature change and the aggregate type have not been well elaborated in the previous researches and need further investigations. Several test methods have been suggested to study the low temperature behaviour of asphalt concrete, out of which the Thermal Stress Restrained Specimen Test (TSRST) is one of the most common methods used by the researchers. An investigation was carried out to know the influence of aggregate type and different cooling rates on the fracture strength of asphalt concrete specimens. Test specimens were prepared using two aggregate types while the other design variables such as gradation, asphalt binder grading, air voids and specimen size were kept constant. The optimum asphalt content was determined using the Superpave mix design methods and a number of slab specimen were compacted to 4 per cent air voids using a pneumatic tire rolling equipment . The specimens were then sawed to make prismatic beam sections and subjected to TSRST testing. The statistical analysis of the results suggests that the aggregate type has a significant effect on the fracture strength of specimens while the effect of using varying cooling rates was not found to be statistically significant

Subject Keywords

Aggregates, Compression, Pavement design, Pavements, Temperature, Test procedures, Tests for suitability, Service and quality

URI

https://hdl.handle.net/11511/73603

Conference Name

5th International Conference on Bituminous Mixtures and Pavements, (2-03 Haziran 2011)

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Effect of Foamed Binder Characteristics on Warm-Mix Asphalt Performance Öztürk, Hande Işık (null; 2014-01-16) Warm Mix Asphalt (WMA) has been introduced to produce and place asphalt pavements at lower temperatures as compared to conventional Hot Mix Asphalt (HMA). While the WMA technologies are appealing, their long-term performance relative to HMA is not well-known. Among various WMA technologies, foam-based methods are the most widespread WMA applications. However, most of the current WMA design is based on empirical data and there is limited understanding of the fundamental behavior of the foamed binders and mix...
Effects of mix design variables on mechanical properties of hot mix asphalt Güler, Murat (American Society of Civil Engineers (ASCE), 2008-03-01) Compaction of hot mix asphalt after the laydown process is one of the critical steps of construction affecting the service performance of asphalt concrete. It is known that compaction is controlled by a number of mix design variables, i.e., binder type, gradation. asphalt content, and compaction temperature. In this paper, effects of mix design variables on the mechanical properties of hot mix asphalt are investigated based on laboratory compacted specimens. A continuum model is utilized to simulate the lab...
Effect of warm mix additives on compactabilitiy of mixtures Pamuk, Ömer Can; Öztürk, Hande Işık; Department of Civil Engineering (2019) Warm Mix Asphalt (WMA), the technology that allows significant reduction in the mixing and compaction temperatures of asphalt mixtures, has been commonly used globally since the early 2000s. This study evaluates the effect of compaction temperature (CT) on WMA and Hot Mix Asphalt (HMA) mixtures volumetrics, degradation, stability, and compactability properties. Although both Superpave Gyratory Compactor (SPGC) and Marshall hammer are used for sample preparation, the focus of this study is to develop compact...
Influence of warm mix additive on internal structure of dry process crumb rubber modified mixtures Yucel, Ayhan Oner; Öztürk, Hande Işık; Güler, Murat (2021-09-01) Performance of asphalt concrete depends highly on its internal structure, which is affected by production temperature, compaction effort and material properties. This study aims to evaluate the internal structure and performance of dry process crumb rubber modified mixtures with warm mix asphalt (WMA) additives. In order to evaluate the effect of WMA additive on these properties, dry process crumb rubber modified WMA mixtures were prepared under different production temperatures applying different compactio...
Low temperature performance of asphalt concrete under direct tension loading Karakaya, Yalçın; Güler, Murat; Department of Civil Engineering (2015) Thermal cracking is one of the major distresses in asphalt pavements and has been a serious concern especially in cold regions. There are two different mechanisms for temperature cracking in the field: Low temperature cracking associated with severe temperature drops and thermal fatigue cracking in reaction to repeated temperature cycles. In this study, in order to investigate the thermal tensile properties of asphalt concrete, Direct Tension Test (DTT) is utilized in a TSRST experimental setup. Naturally-a...

Citation Formats

A. Quadır and M. Güler, “Effect of Aggregate Type and Rate of Temperature Change on Fracture Strength of Asphalt Concrete,” presented at the 5th International Conference on Bituminous Mixtures and Pavements, (2-03 Haziran 2011), Thessaloniki, Greece, 2012, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73603.