Influence of mineral fillers on rheological and aging characteristics in bituminous mastic

IF 4.5 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Mechanics of Time-Dependent Materials Pub Date : 2026-03-24 DOI:10.1007/s11043-026-09864-6

K. L. A. V. Harnadh, A. Padmarekha, M. R. Nivitha, S. Karuppasamy

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Abstract

Mineral fillers (Hydrated lime & Quarry dust) play a major role in improving the performance of the mastic. The interaction with bitumen, the aging kinetics of the mastic, and the resulting rheological behavior are primarily controlled by the filler dosage and its physicochemical interaction. This study investigates the impact of different dosages of hydrated lime (HL) and Quarry dust (QD) on unaged and aged bituminous mastic. FTIR spectroscopy was used to evaluate the functionalities present in mastic and thereby understand the interaction effects and aging kinetics. The frequency sweep test was conducted in the temperature range of 30 to 80 °C to evaluate the viscoelastic properties of the mastic. The findings show that the presence of hydroxyl, aliphatics and carbonyl in hydrated lime mastic (HLM) increased the absolute shear modulus of the mastic up to 30%. For 40% HL, the reduction of the aliphatic index due to the scission of the carbon chain resulted in a reduced modulus. HL also assisted in reduced aging of mastic after 50 hours of aging. For QDM only a small improvement in modulus was observed and the phase angle of QDM is found to be dosage-independent. The aging compounds were also higher for QDM resulting in a corresponding increase in absolute shear modulus. To decide the proportion of the filler in the mix, it is important to consider the filler type and its interaction with the bitumen in addition to the density required from particle packing.

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矿物填料对沥青胶泥流变及老化特性的影响

矿物填料（水合石灰和采石场粉尘）在改善乳胶泥性能方面起着重要作用。胶粘剂与沥青的相互作用、胶粘剂的老化动力学以及由此产生的流变行为主要由填料用量及其物理化学相互作用控制。研究了不同掺量的水合石灰（HL）和采石场粉尘（QD）对未老化和老化沥青胶泥的影响。FTIR光谱用于评价胶泥中存在的功能，从而了解相互作用效应和老化动力学。频率扫描试验在30 ~ 80℃的温度范围内进行，以评价胶粘剂的粘弹性。研究结果表明，羟基、脂肪族和羰基的存在使水合石灰胶泥的绝对剪切模量提高了30%。对于40% HL，由于碳链断裂导致脂肪族指数降低，导致模量降低。HL在老化50小时后也有助于减少乳胶的老化。对于QDM，仅观察到模量的微小改善，并且发现QDM的相位角与剂量无关。QDM的老化化合物含量也较高，导致绝对剪切模量相应增加。为了确定填料在混合料中的比例，除了考虑颗粒填料所需的密度外，还必须考虑填料的类型及其与沥青的相互作用。

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来源期刊

Mechanics of Time-Dependent Materials 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

8.00%

发文量

审稿时长

>12 weeks

期刊介绍： Mechanics of Time-Dependent Materials accepts contributions dealing with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites. It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Contributions concerned with fundamental issues relating to processing and melt-to-solid transition behaviour are welcome, as are contributions addressing time-dependent failure and fracture phenomena. Manuscripts addressing environmental issues will be considered if they relate to time-dependent mechanical properties. The journal promotes the transfer of knowledge between various disciplines that deal with the properties of time-dependent solid materials but approach these from different angles. Among these disciplines are: Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Rheology, Materials Science, Polymer Physics, Design, and others.