V. G. Nikol’skii, I. A. Krasotkina, T. V. Dudareva, V. N. Gorbatova, L. A. Gorelysheva, V. N. Garmanov
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引用次数: 0
摘要
研究了 BND 60/90 级沥青、沥青胶泥（AM）、改性沥青（MB）和三元混合物（沥青-填料-改性剂）（改性沥青胶泥（MAM））的疲劳特性。矿物粉末（MP）与沥青的比例分别为 2 : 1 和 1 : 1，被用作 AM 和 MAM 的填料。通过高温剪切研磨获得的离散脱硫橡胶活性粉末（APDDR）被用作 MB 和 MAM 的改性剂，APDDR 的用量为沥青重量的 12.5%。结果表明，APDDR 对沥青和沥青玛蹄脂的疲劳寿命产生了积极影响。根据线性振幅扫频试验中的τ(γ)曲线确定的后峰值间距角和τmax/({{\gamma }_{{{{\tau }_{{text/{max}}}}}}}}\)等疲劳参数有望对含有粘结网络的改性样品进行排序。
The Effect of Filler and Modifier on the Fatigue Characteristics of Road Bitumen
The fatigue characteristics of BND 60/90 grade bitumen, asphalt mastic (AM), modified bitumen (MB), and ternary mixtures (bitumen–filler–modifier) (modified asphalt mastic (MAM)) have been studied. Mineral powder (MP) with a bitumen : MP ratio of 2 : 1 and 1 : 1 has been used as a filler in AM and MAM. Active powder of discretely devulcanized rubber (APDDR) obtained by means of high-temperature shear grinding was used as a modifier in MB and MAM in an amount of 12.5% of APDDR with respect to the weight of bitumen. The positive effect of APDDR exerted on the fatigue life of bitumen and asphalt mastic has been shown. Such fatigue parameters as postpeak pitch angle and τmax/\({{\gamma }_{{{{\tau }_{{{\text{max}}}}}}}}\) determined from τ(γ) curves in a linear amplitude sweep test are promising for the ranking of modified samples containing a network of bonds.
期刊介绍：
Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.
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