Effects of the morphological characteristics of mineral powder fillers on the rheological properties of asphalt mastics at high and medium temperatures

Xing, Baodong; Fan, Weiyu; Zhuang, Chuanyi; Qian, Chengduo; Lv, Xiaobo

doi:10.1016/j.powtec.2019.03.014

Cited by 47 publications

(4 citation statements)

References 50 publications

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“…In contrast, the surface of the limestone filler is composed of smooth irregular flakes. According to the study of Xing et al [51]. The rougher the surface of the filler, the stronger the interlocking effect between the filler and the asphalt.…”

Section: Surface Morphology Of Fillermentioning

confidence: 99%

Exploring the Utilization of PHC Pile Waste Concrete as Filler in Asphalt Mastics

Tu,

Yang,

et al. 2023

Materials

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Using solid waste to replace limestone filler in asphalt concrete can not only reduce the cost of road construction, but also improve the utilization rate of solid waste. In this study, PHC pile waste concrete (PPWC) was innovatively used to replace limestone filler in asphalt mixture and its effect on the physical and rheological properties of asphalt mastics was studied. Firstly, PPWC was ground into filler particles with a diameter less than 0.075 mm. The physical properties, particle characteristics and chemical composition of PPWC filler and limestone filler were compared. Asphalt mastics were prepared with different filler-asphalt volume ratios (20%, 30% and 40%) and the physical properties, high-temperature rheological properties and low-temperature cracking resistance of asphalt mastics were tested. The experimental results showed that the surface of PPWC filler is rougher and has lower density and smaller particle size than limestone filler. When the filler content is the same, PPWC filler asphalt mastics have lower penetration and ductility, higher softening point than limestone filler asphalt mastics, and the viscosity of PPWC filler asphalt mastics is more sensitive than limestone filler asphalt mastics. PPWC filler asphalt mastics demonstrated superior high-temperature stability, but poorer low-temperature cracking resistance compared to limestone filler asphalt mastics. In conclusion, PPWC fillers can be used to replace limestone fillers in asphalt mixtures. The finding of this study will provide a new solution for the construction of eco-friendly roads.

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Section: Surface Morphology Of Fillermentioning

confidence: 99%

Exploring the Utilization of PHC Pile Waste Concrete as Filler in Asphalt Mastics

Tu,

Yang,

et al. 2023

Materials

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“…Regarding the structural characteristics of fillers, the roundness index, Rigden void, and specific surface area of filler particles were identified as predominant factors influencing the degree of stiffening in mastic [20]. On the other hand, angularity, porosity, aspect ratio, average diameter, and fractal dimension significantly influenced specific rheological properties, including fatigue failure and per cent recovery [21].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction

et al. 2023

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The growing need to preserve natural resources and minimize landfill waste has led to an increased consideration of incorporating waste materials in road construction and maintenance. This study focuses specifically on utilizing waste glass as part of the aggregates in hot asphalt, particularly in Asphalt Concrete (AC) for surface layers, known as “Glassphalt”. Glass, due to its poor adhesion to bitumen, presents challenges when used in asphalt mixtures. Two types of waste glass, monolithic and tempered, were incorporated at two distinct contents, 10% and 15%, into the AC. Several properties such as stiffness, resistance to permanent deformation (evaluated through cyclic compression tests), indirect tensile strength, and the indirect tensile strength ratio (ITSR) were assessed for all Glassphalt mixtures, as well as the conventional mixture. Additionally, the Solar Reflectance Index (SRI) was measured to evaluate the reflectivity of the resulting Glassphalts. The findings indicate that the incorporation of both types of waste glass resulted in reduced stiffness and resistance to permanent deformation. Regarding water sensitivity (ITSR), the Glassphalts containing 15% waste glass, regardless of the glass type, exhibited ITSR values below the accepted threshold of 80%. The addition of waste glass did not yield significant changes in SRI measurements.

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“…Typically, asphalt concrete is composed of asphalt, aggregates, and mineral fillers (Taherkhani and Vahabi Kamsari, 2020;Jia et al, 2022). The shape and size of mineral fillers can impact asphalt's flowability, consequently influencing the construction performance of asphalt concrete (Xing et al, 2019;Zhang et al, 2020;Belayali et al, 2023). Moreover, mineral fillers can fill the voids in asphalt concrete, enhancing its strength and thus improving the durability of road structures (Amirbayev et al, 2022;Russo et al, 2022;Wei et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Road performance evaluation of prestressed high-strength concrete pile waste powder as alternative filler in asphalt concrete

Tu,

Yang,

et al. 2023

Front. Energy Res.

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As a kind of solid waste, using Prestressed High-Strength Concrete Pile Waste Concrete (PPWC) as the replacement for limestone filler in asphalt concrete can not only reduce the accumulation of PPWC and increase its utilization but also avoid the increased road construction costs and environmental degradation associated with limestone mining. This study aims to investigate the effect of using PPWC filler to replace limestone filler on the road performance of asphalt concrete. Firstly, PPWC was ground into filler particles with a diameter less than 0.075 mm. The particle characteristics such as surface morphology, particle size distribution and chemical composition of PPWC filler and limestone filler were compared. Then, PPWC filler was used to replace limestone filler with different volume fractions to prepare asphalt concrete, and the water damage resistance, high-temperature rutting resistance, low-temperature crack resistance, fatigue resistance and adhesion performance of asphalt concrete were tested. The results showed that PPWC filler has a smaller particle size and rougher surface than limestone filler, and it contains Ca(OH)2 produced by hydration. The addition of PPWC filler can effectively improve the mechanical properties of asphalt concrete without reducing its water damage resistance. PPWC filler can improve the high-temperature rutting resistance and low-temperature crack resistance of asphalt concrete, but reduce its low-temperature fatigue resistance. The low content of PPWC filler will enhance the adhesion between asphalt mortar and aggregate. However, when the content of PPWC filler exceeds 50%, Ca (OH)2 in PPWC will reduce the adhesion between acid asphalt mortar and alkaline basalt aggregate. Therefore, the use of PPWC as filler in asphalt mixtures provides a reliable solution for the sustainable development of road materials.

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Effects of the morphological characteristics of mineral powder fillers on the rheological properties of asphalt mastics at high and medium temperatures

Cited by 47 publications

References 50 publications

Exploring the Utilization of PHC Pile Waste Concrete as Filler in Asphalt Mastics

Exploring the Utilization of PHC Pile Waste Concrete as Filler in Asphalt Mastics

Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction

Road performance evaluation of prestressed high-strength concrete pile waste powder as alternative filler in asphalt concrete

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