Measuring moisture susceptibility of Cold Mix Asphalt with a modified boiling test based on digital imaging

Cheng, Long; Hanz, Andrew; Bahia, Hussain U.

doi:10.1016/j.conbuildmat.2015.12.093

Cited by 56 publications

(17 citation statements)

References 5 publications

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“…Однако, недостатком этого вида смеси является длительный период формирования в покрытии (1,5 -3 мес. в зависимости от вязкости жидкого битума, интенсивности движения автомобилей и погодных условий) [17,19]. Вследствие недостаточной плотности и слабых структурных связей холодный асфальтобетон характеризуется низкой водо-и морозостойкостью, поэтому его применяют в условиях холодного климата на дорогах низких категорий или для их ремонта в переходные периоды года [15,18,19].…”

Section: актуальность применения теплых асфальтобетонных смесей для дunclassified

“…в зависимости от вязкости жидкого битума, интенсивности движения автомобилей и погодных условий) [17,19]. Вследствие недостаточной плотности и слабых структурных связей холодный асфальтобетон характеризуется низкой водо-и морозостойкостью, поэтому его применяют в условиях холодного климата на дорогах низких категорий или для их ремонта в переходные периоды года [15,18,19]. Холодные асфальтобетонные смеси непригодны для строительства дорожного покрытия в условиях средиземноморского, субтропического, а ближе к центру страны -континентального климата Сирии, в которой летняя температура в пустынных областях доходит до + 50 °С [20].…”

Section: актуальность применения теплых асфальтобетонных смесей для дunclassified

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The Importance of the Use of Warm Mix Asphalt for Construction Roads in Conditions of the Syrian Arab Republic

Alshahwan

Kalgin

2020

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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As a result of prolonged hostilities in the Syrian Arab Republic, maintenance and repair of roads are not carried out for a long time, which led to the decline of the road network. Roads of the Syrian Arab Republic require significant rehabilitation; repairs must be carried out within a short period at the lowest cost, while achieving optimal technical characteristics. Weak economic potential of the country, low fuel reserves of various types, in addition to the huge destruction of the road network - all these difficulties facing the reconstruction process. This article is devoted to the study of the characteristics of the technologies of asphalt mixes used in road construction, and the determination of the most suitable technology for current conditions. As a result of research, it is emphasized that warm asphalt mix is the best choice compared to other types of technologies: it reduces energy consumption, reduces production costs, helps to extend the construction season, expand production capacities, save the environment, etc.

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Section: актуальность применения теплых асфальтобетонных смесей для дunclassified

The Importance of the Use of Warm Mix Asphalt for Construction Roads in Conditions of the Syrian Arab Republic

Alshahwan

Kalgin

2020

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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“…Generally, it is used in road maintenance and requires a long setting time for good road performance and stability [21]. However, the relatively poor water stability of cold mix asphalt represents a significant challenge to its wide usage [22].…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

Emission Reduction Performance of Modified Hot Mix Asphalt Mixtures

Wang

et al. 2017

Advances in Materials Science and Engineering

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Three novel asphalt modifiers with pollutant emission reduction effects and new emissions measurement equipment compatible with several preexisting asphalt production systems are developed in this paper. The effects of various modifier, asphalt binder type, and gradation of hot mix asphalt (HMA) on pollutant emissions are evaluated in the lab through a comprehensive experimental design. Furthermore, road performances are monitored to evaluate the emissions reduction of modified HMA mixture for production. With increasing modifier content, the emissions reduction performance is improved markedly, with maximum reduction of 70.5%. However, the impact of modifier content on pollutant emissions reduction tends to be insignificant for dosages greater than 20% of the initial asphalt weight. Changes in asphalt type and asphalt mix gradation are found to moderately impact the emissions reduction effect. Finally, the mechanisms of emissions reduction are investigated, primarily attribute to their physical and chemical adsorption and pollutant reductive degradation characteristics.

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“…Bentonite (a kind of nano clay with strong water absorption) or microbial carbonate precipitation (MCP) has been added to CPAM with the objective of improving its capacity for moisture resistance. Moreover, these additives enhance the dehumidification and water damage prevention characteristics related to CPAM (Ling et al, 2016;Dong et al, 2018;Alenezi et al, 2019;Attaran Dovom et al, 2019). Besides, the use of cementing material instead of the emulsion can achieve the same effect.…”

Section: Introductionmentioning

confidence: 97%

A New Method of Mix Design for Cold Patching Asphalt Mixture

Wang

Xia

et al. 2020

Front. Mater.

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The objective of this research was to improve the scientificity of the design method of the cold patching asphalt mixture (CPAM). Firstly, the curing temperature for CPAM was optimized. In addition, based on the traditional Marshall mix design method, the volume parameters of CPAM were converted, and the low-temperature workability index was added. This is the modified Marshall mix design method to determine the optimal asphalt aggregate ratio of CPAM. Then, the initial strength, forming strength, storage stability, water stability, and high-temperature stability of CPAM were tested. The properties of CPAM designed by using the modified Marshall mix design method were compared with those of CPAM designed by using the traditional Marshall mix design method and the empirical formula method. The test results show that the optimal asphalt aggregate ratio of CPAM is 5.38%. The recommended oven curing temperature for the CPAM specimen is 90 • C. The initial strength and forming strength of CPAM meet the requirements, and the forming strength can reach about twice the initial strength. The stability of CPAM increases with an increase in storage time. High-temperature performance is good. These properties of CPAM designed by using the modified Marshall mix design method were all superior to those of the CPAM designed by using the traditional Marshall mix design method and the empirical formula method, and the water stability is similar to that of the CPAM designed by the traditional Marshall mix design method. The CPAM designed by using the modified Marshall mix design method shows better road performance, which shows that the modified procedure in this study is feasible and can be recommended as the mix design method for CPAM.

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Measuring moisture susceptibility of Cold Mix Asphalt with a modified boiling test based on digital imaging

Cited by 56 publications

References 5 publications

The Importance of the Use of Warm Mix Asphalt for Construction Roads in Conditions of the Syrian Arab Republic

The Importance of the Use of Warm Mix Asphalt for Construction Roads in Conditions of the Syrian Arab Republic

Emission Reduction Performance of Modified Hot Mix Asphalt Mixtures

A New Method of Mix Design for Cold Patching Asphalt Mixture

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