玻璃纤维、醋酸乙烯及其组合在石胶沥青上的性能评价

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2020-10-20 DOI:10.1080/14488353.2020.1835143
Mohsen Aboutalebi Esfahani, Vahid Mirian
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引用次数: 4

摘要

摘要高抗拉强度玻璃纤维和乙烯-醋酸乙烯酯(EVA)聚合物由于其良好的性能,可能会显著改变SMA的性能。因此,本研究的主要目的是评估这两种添加剂及其组合对SMA的性能。因此,研究了3、4和5%EVA改性沥青的物理性能以及3、4、5%EVA和0.1%、0.2%和0.3%玻璃纤维制备的SMA的力学性能。为此,进行了渗透、软化点、旋转粘度、动态剪切流变仪、弹性模量、动态蠕变和疲劳试验。研究结果表明,EVA最优值为4%的改性沥青的性能分级分为两类得到改善,SMA性能显著提高。然而,由于玻璃纤维的脆性,含有0.2%和0.3%玻璃纤维的SMA的性能严重下降。由于沥青砂浆的增强以及纤维对混合物的整体结构没有影响,0.1%纤维的混合物性能略有改善。此外,只有4%的EVA与0.1%的玻璃纤维的组合才给出可接受的结果。
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Evaluation of glass fibres, ethylene vinyl acetate and their combination on stone mastic asphalt
ABSTRACT Glass fibre with high tensile strength and Ethylene Vinyl Acetate (EVA) polymer may change Stone Matrix Asphalt (SMA) performance significantly due to its good performance. Therefore, the study’s main objective is to evaluate these two additives’ performances and their combination on SMA. Thus, modified bitumen’s physical properties with 3, 4 and 5% of EVA and mechanical properties of SMA made by 3, 4 and 5% of EVA and 0.1%, 0.2% and 0.3% of glass fibre are investigated. For this purpose, penetration, softening point, rotational viscosity, dynamic shear rheometer, resilient modulus, dynamic creep, and fatigue tests are performed. The results demonstrate that the performance graded of modified bitumen with an optimum value of 4% EVA is improved as two classes, leading to a significant improvement in the SMA performance. However, the performance of SMA containing 0.2% and 0.3% of glass fibre decreases severely due to the fragility of the fibres. The performance of the mixture in 0.1% of the fibres is slightly improved due to the reinforcement of the bitumen mortar and the lack of effect of the fibres on the overall structure of the mixture. Also, only the combination of 4% EVA with 0.1% glass fibre gives an acceptable result.
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来源期刊
CiteScore
3.90
自引率
7.70%
发文量
31
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