Rheological behavior of bitumen mixed with Trinidad lake asphalt

Liao, Min Chih; Chen, Jian‐Shiuh; Airey, Gordon; Wang, Shi Jing

doi:10.1016/j.conbuildmat.2014.05.068

Cited by 36 publications

(17 citation statements)

References 11 publications

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“…The benefits of using in hot mix asphalt the Trinidad Epuré (TE) asphalt additives, also referred to in publications as Trinidad Lake Asphalt (TLA), have been scientifically proven. Based on the tests [19,20,21,22] related to the modification of Trinidad Epuré road bitumen additive it was possible to observe a decrease in the penetration value, an increase in the softening temperature value, an increase in resistance to permanent deformations at high temperatures -increase of the G * /sin(δ) parameter. In the case of road pavements made of a hot mix asphalt prepared with the use of an asphalt binder with the Trinidad Epuré additive, an improvement in the workability and compactability of the hot mix asphalt was observed [23].…”

Section: Oil Sandsmentioning

confidence: 99%

Natural asphalts – properties and use

Bilski¹

2018

ACEI

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The article describes and illustrates natural asphalts according to the classification due to the solubility of carbon disulphide. The review of bitumens and the sources of their acquisition aims to systematize knowledge on this subject in terms of practical application. Exemplary applications on an industrial scale, discussed natural asphalts with particular emphasis on their use in road construction have been presented.

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Section: Oil Sandsmentioning

confidence: 99%

Natural asphalts – properties and use

Bilski¹

2018

ACEI

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“…This anti-craking agent does not alter the composition of the product discussed (according to the 2013 Laborhandbuch für Trinidad Naturasphalt Laboratory Manual for Trinidad Naturasphalt). Research conducted by Liao et al (2014) and Widyatmoko, Elliott (2008) concerning the modification of road bitumens by adding Trinidad Epuré showed that this additive reduces the penetration value, increases the softening point and resistance to permanent deformation at high temperatures (an increase in the value of the * sin G δ parameter). An improvement in the workability and ability to compact of the asphalt mix was observed in the case of road pavement made of asphalt mixture that was prepared using an asphalt binder with the addition of Trinidad Epuré (Danowski 2009).…”

Section: An Experimental Study Of the Impact Of Aging On Gilsonite Anmentioning

confidence: 99%

An experimental study of the impact of aging on Gilsonite and Trinidad Epuré modified asphalt binders properties

Słowik

Bilski

2017

The Baltic Journal of Road and Bridge Engineering

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The tests and analyses presented in the paper are related to the 20/30, 35/50 and 50/70 penetration grade road bitumens as well as the asphalt binders obtained through modification of the 35/50 and 50/70 bitumens. The latter were modified by adding to it 3%, 5% and 7% of the Gilsonite natural asphalt and 15%, 25% and 35% of the Trinidad Epuré Z 0/8 natural asphalt. The aim of the study was to assess the changes in the functional and rheological properties of theroad bitumens that were modified by adding to them the Gilsonite and Trinidad Epuré natural asphalts. The modified asphalt binders were subjected to the laboratory simulated short-term and long-term aging, where two methods, designed as part of the Strategic Highway Research Program, were used, i.e. the Rolling Thin Film Oven Test and the Pressure Aging Vessel, respectively. The study of the asphalt binders both those that were subjected to aging and those unaged includes thermal susceptibility (the Penetration Index) and resistance to cracking at low temperatures by tests carried out using the Bending Beam Rheometer. The analysis of the results revealed that the unfavourable impact of the aging process on the asphalt binder properties is limited if a suitable amount of the natural asphalt is used as a modifier.

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“…Trinidad Lake Asphalt (TLA), mainly consists of asphalt and mineral matter, different from petroleum asphalt. Although the chemical composition of the asphalt part of TLA is similar to that of petroleum asphalt, it cannot be used as a binder alone in asphalt mixtures because it is very hard due to its high mineral and asphaltene content [2]. Xu et al investigated the properties of Trinidad Lake Asphalt and SBS modified asphalt mixtures.…”

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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Rheological behavior of bitumen mixed with Trinidad lake asphalt

Cited by 36 publications

References 11 publications

Natural asphalts – properties and use

Natural asphalts – properties and use

An experimental study of the impact of aging on Gilsonite and Trinidad Epuré modified asphalt binders properties

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

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