Evaluation of the mechanical properties of natural asphalt-modified hot mixture

Kök, Baha Vural; Yılmaz, Mehmet; Turğut, Paki; Kuloğlu, Necati

doi:10.3139/146.110654

Cited by 17 publications

(5 citation statements)

References 11 publications

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“…ITS values of 20NA, 35NA and 50NA mixtures were 64%, 97% and 180% higher than the pure mixture, respectively. It is seen that the use of natural asphalt can increase the tensile strength of the mixtures up to 2 times with the same trend as other studies in the literature (12,6,4,9). The 4SBS mixture has 37% higher ITS value than that of the pure mixture.…”

Section: Its = 2pmax / πTd (1)supporting

confidence: 82%

“…It has been determined that the fatigue life, rutting resistance and high temperature performances of bituminous hot mixtures prepared with gilsonite modified binders have increased [10,11]. Hot bituminous mixtures prepared by natural asphalt which consists of 17% asphalt fraction and 83% mineral fraction was found to be higher stiffness modulus and also resistance to permanent deformation compared to control mixtures [12]. It was concluded that the use of Gilsonite is useful for constructing asphalt mixture with harder bitumen in order to have more rutting resistance and better load distribution within structure and as a result less stresses in pavement structure [13].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Its = 2pmax / πTd (1)supporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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

2022

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“…Kök et al [153] used a NA composed of 17 wt% asphalt fraction and 83 wt% mineral fraction to modify an asphalt mixture. They used an AC 190 pen as an asphalt binder.…”

Section: Oil Sands and Othersmentioning

confidence: 99%

Natural Asphalts in Pavements: Review

2023

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Natural asphalts (NAs) can be an economical and environmental alternative in pavement construction. Most studies have investigated them as binder and asphalt mixture modifiers due to their high compatibility with conventional asphalts. In this article, some of the studies carried out on the use of NA in pavements are summarized and described in a chronological order. The main aspects described in the reviewed studies were the type of asphalt binder or modified mixture, the type and content of the modifier, the manufacturing processes of the asphalt or modified mixture, tests performed, and main results or conclusions. In general terms, NAs show better performance as binder and asphalt mixture modifiers in high-temperature climates. Additionally, they tend to improve water and ageing resistance. As main limitations, it is reported that NAs tend to negatively affect the workability and performance of asphalt mixtures in low-temperature climates. Finally, recommendations for future study topics are provided at the end of this paper.

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“…Ал кейбір зерттеулер [9] 8,33% модификаторы бар битум құмымен модификацияланған қоспалардың Юнг модулі мұнай битумының қоспасымен салыстырғанда жоғары екенін көрсетті. Басқа зерттеулер шайырлы құмды негізгі қабат немесе дұрыс қоспа құрамы бар тозу қабаты ретінде пайдалануға болатынын көрсетті [10].…”

Section: нефтехимияunclassified

Using the Kir of the Karasyaz-Taspas Deposit as a Component of Hot Asphalt Concrete

AYAPBERGENOV,

BUSSURMANOVA,

AKKENZHEYEVA

et al. 2023

NiG

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Natural bitumen has long been used in road paving, but in recent years, the demand for it has decreased. However, the use of natural bitumen in the road surface is gaining popularity again. Natural bitumen has a high content of asphaltenes and a higher molecular weight compared to petroleum bitumen. For the purpose of promising application of natural bitumen as road construction materials, studies were conducted on the selection of compositions based on oil-bitumen rocks of the Karasyaz-Taspas deposit.

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Evaluation of the mechanical properties of natural asphalt-modified hot mixture

Cited by 17 publications

References 11 publications

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

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

Natural Asphalts in Pavements: Review

Using the Kir of the Karasyaz-Taspas Deposit as a Component of Hot Asphalt Concrete

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