Effects of Mixing Temperature  on the Mechanical Properties of Hot Mix Asphalt

Balik, Gül; Yılmaz, Mehmet; Kök, Baha Vural; Alataş, Taner

doi:10.18400/tekderg.405948

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…As can be seen in Figure 2, as conditioning temperatures of the compacted test specimens increased, their Marshall stability test results increased but their flow and air content test results mostly decreased. This relationship between mixing or conditioning temperatures of the compacted specimens and their Marshall stability and flow test results were also observed in some other studies (Balık et al, 2019). As specified in Table 1, compacted specimens must have a minimum 250 kgf.…”

Section: Marshall Stability Flow and Air Content Test Resultssupporting

confidence: 78%

%100 Geri Dönüştürülmüş Asfalt Kaplamanın Türkiye'de Soğuk Karışım Bakım Malzemesi Olarak Kullanılabilirliğinin Deneysel Olarak İncelenmesi

Kaya

2023

Karadeniz Fen Bilimleri Dergisi

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In this study, the usability of 100% RAP as a cold patching material (CPM) was experimentally investigated. As part of this study, first, the RAP material has been characterized to determine its binder content and particle size distribution of the extracted aggregate. Then, three sets of RAP specimens (each set has three specimens) were prepared. These specimens were conditioned at 22°C, 40°C and 45°C for three hours. Then, the specimens were compacted with 75 Marshall hammer blows. The compacted specimens were then tested for their Marshall stability, and flow at 22°C. Air contents of the test specimens were also determined . It was observed that as conditioning temperatures of the compacted test specimens increased, their Marshall stability test results increased but their flow and air content test results mostly decreased. Marshall stability test results of all three sets of specimens were well above the specification limits. Moreover, all test specimens except for only one specimen conditioned at 22°C met the flow and air content criteria. It could be concluded that 100% RAP could be used as a CPM especially above 22°C. If it is needed to be used at around 22°C, it must be ensured that it is well compacted so that its air content is below 8% for a durable and comparably long-lasting cold patching application.

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Section: Marshall Stability Flow and Air Content Test Resultssupporting

confidence: 78%

%100 Geri Dönüştürülmüş Asfalt Kaplamanın Türkiye'de Soğuk Karışım Bakım Malzemesi Olarak Kullanılabilirliğinin Deneysel Olarak İncelenmesi

Kaya

2023

Karadeniz Fen Bilimleri Dergisi

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“…It has a specific gravity that ranges from 1.03 to 1.10. It's softened between 120 and 175 °C and has a penetration value of zero [19][20][21]. Finally, RA is a natural building material that does not require chemical processing and is extremely compatible with bitumen.…”

Section: Introductionmentioning

confidence: 99%

Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏

AHMED,

LATİEF,

ALBAYATİ

2023

Gazi University Journal of Science

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Globally, for more than a century, large quantities of asphalt binder have been consumed in the production of asphalt mixtures. There are two types of natural asphalt (NA) deposits in the Heet region: rock asphalt and sulphur spring asphalt. NA from sulphur springs was used in this study to assess NA performance and determine the suitability of using NA in local asphalt mixtures. The NA was treated by heating it to 163 °C for several hours. NA was subjected to laboratory testing after industrial treatments, and it was found that the physical properties of NA can conform to Iraqi specifications by heating it for 20 hours. The results showed that treated NA is better suited to hot climates because it is less temperature sensitive than traditional petroleum asphalt. NA was discovered to be highly effective in improving mechanical properties. In addition, the NA mixture had the highest indirect tensile strength values and a tensile strength ratio of 81.2%, which was 0.37% higher than the TSR of the conventional mix. NA will play an important role in the production of flexible pavements and provide a significant economic benefit without compromising the overall performance of the mixture because it is less expensive than conventional asphalt and is available in large quantities in Iraq.

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“…Finally, it was observed that gilsonite modified mixtures gave a lower rutting depth [6]. It was determined that the addition of 18 wt % American Gilsonite to PG 58-18 pure binder resulted in PG 76-16 and also gives lower mixing-compaction temperature compared to 5% SBS modification [7]. Rock asphalt is a type of natural asphalt that passes through the oiling process following the division of rocks from the cracks.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Iraq Natural Asphalt on Mechanical Properties of Bituminous Hot Mixtures

2022

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The increasing rate of traffic every day requires the roads to be made more stable. In order to improve the low and high temperature properties of the bituminous mixtures forming the coating layer of the flexible pavements, the binder in the mixture is often modified with various polymers. The most commonly used polymer in the modification is styrenebutadiene-styrene (SBS). However, SBS, which is very successful in improving the mechanical properties of the mixtures, is expensive and has brought the search for cheaper alternative additives. In this context, natural asphalts (NA) which are not subjected to any processes are used as additive. In this study, natural asphalt obtained from Zaho region of Iraq was used in 20%, 35% and 50% of bitumen modification by weight. The mechanical properties of mixtures prepared with different amount of NA modified bitumen were compared with 4% SBS modified bituminous mixtures. As a result, NA modification significantly improved the properties of bituminous mixtures. In particular, above 35% NA, the mixtures exhibited a superior performance by significantly resisting the effect of repeated loads. It was found that an average of 17.3% NA modification exhibited similar behavior with 4% SBS modification and provided significant economic savings.

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Effects of Mixing Temperature on the Mechanical Properties of Hot Mix Asphalt

Cited by 3 publications

References 24 publications

%100 Geri Dönüştürülmüş Asfalt Kaplamanın Türkiye'de Soğuk Karışım Bakım Malzemesi Olarak Kullanılabilirliğinin Deneysel Olarak İncelenmesi

%100 Geri Dönüştürülmüş Asfalt Kaplamanın Türkiye'de Soğuk Karışım Bakım Malzemesi Olarak Kullanılabilirliğinin Deneysel Olarak İncelenmesi

Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏

The Effects of Iraq Natural Asphalt on Mechanical Properties of Bituminous Hot Mixtures

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