Rheological simulation of bituminous mixes with crumb rubber by the dry process

IF 1.2 4区化学 Q4 POLYMER SCIENCE

Journal of Rubber Research Pub Date : 2024-10-21 DOI:10.1007/s42464-024-00285-z

Fayssal Cheriet, Alan Carter, Smail Haddadi

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Abstract

There is compelling evidence supporting the benefits of incorporating crumb rubber to enhance the properties of bituminous mixes. The main aim of this paper is to investigate the effect of crumb rubber on the rheological properties of bituminous mixes using the dry method. A comparison was made in terms of linear viscoelastic behaviour, between five mixtures including the control mixture and four mixtures modified with 1% or 2% crumb rubber added and the various bitumen content. This modification was conducted to replace a portion (volume) of the aggregate with an equivalent volume of crumb rubber. Complex modulus tests on cylindrical specimens were carried out for each mixture by the tension–compression method. The complex modulus tests were carried out over a wide range of frequencies (from 0.01 to 10 Hz) and temperatures (− 25 to 45 °C). The specimens are obtained by sawing laboratory specimens in accordance with a gyratory compactor with an air voids content of not more than 1%. The results are modelled and calibrated with the 2S2P1D rheological model. All mixtures have similar rheological behaviour and respect the specification of a BB 0/15, with a modulus values (15 °C, 10 Hz) is greater at 7000 MPa.

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橡胶屑沥青混合料干法流变模拟

有令人信服的证据支持加入橡胶屑以提高沥青混合料性能的好处。本文的主要目的是研究橡胶屑对干法沥青混合料流变性能的影响。比较了五种混合物（包括对照混合物）和四种添加1%或2%橡胶屑的混合物以及不同沥青含量的混合物之间的线性粘弹性行为。这种改性是用同等体积的橡胶屑代替骨料的一部分（体积）。采用拉压法对每种混合料进行柱状试件的复模量试验。复模量测试在很宽的频率范围（从0.01至10 Hz）和温度范围（- 25至45°C）下进行。样品是根据空气空隙含量不超过1%的旋转压实机锯切实验室样品而获得的。用2S2P1D流变模型对结果进行了建模和校准。所有混合物具有相似的流变特性，并且符合BB 0/15的规格，模量值（15°C, 10 Hz）在7000 MPa时更大。

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来源期刊

Journal of Rubber Research 化学-高分子科学

自引率

15.40%

发文量

审稿时长

3 months

期刊介绍： The Journal of Rubber Research is devoted to both natural and synthetic rubbers, as well as to related disciplines. The scope of the journal encompasses all aspects of rubber from the core disciplines of biology, physics and chemistry, as well as economics. As a specialised field, rubber science includes within its niche a vast potential of innovative and value-added research areas yet to be explored. This peer reviewed publication focuses on the results of active experimental research and authoritative reviews on all aspects of rubber science. The Journal of Rubber Research welcomes research on: the upstream, including crop management, crop improvement and protection, and biotechnology; the midstream, including processing and effluent management; the downstream, including rubber engineering and product design, advanced rubber technology, latex science and technology, and chemistry and materials exploratory; economics, including the economics of rubber production, consumption, and market analysis. The Journal of Rubber Research serves to build a collective knowledge base while communicating information and validating the quality of research within the discipline, and bringing together work from experts in rubber science and related disciplines. Scientists in both academia and industry involved in researching and working with all aspects of rubber will find this journal to be both source of information and a gateway for their own publications.