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精选温拌沥青添加剂对沥青混合料抗裂性的影响

Influence of Selected Warm Mix Asphalt Additives on Cracking Susceptibility of Asphalt Mixtures.

作者信息

Stienss Marcin, Szydlowski Cezary

机构信息

Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, 80-233 Gdańsk, Poland.

出版信息

Materials (Basel). 2020 Jan 3;13(1):202. doi: 10.3390/ma13010202.

DOI:10.3390/ma13010202
PMID:31947754
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6981633/
Abstract

Warm mix asphalt (WMA) has been widely accepted as a future asphalt paving technology. Besides clear advantages, there are still some concerns regarding durability and long-term performance of pavements made with this type of asphalt mixtures. One of the most important issues is low temperature behaviour of WMA because certain additives used for temperature reduction can affect bitumen properties. This paper presents the evaluation of low-temperature properties of laboratory-produced asphalt concrete for wearing course with selected WMA additives. One type of bitumen with paving grade 50/70 and five WMA additives of different nature (organic, surface tension reducer and combination of both) were used in this study. The production and compaction temperature of mixtures containing WMA additives was 25 °C lower in comparison with the temperature of the reference mix. To assess the susceptibility of WMA to low-temperature cracking, Semi-Circular Bending (SCB) and Thermal Stress Restrained Specimen Test (TSRST) were used. Supplementary rating was made by analysing Bending Beam Rheometer (BBR) test results of asphalt binders.

摘要

温拌沥青（WMA）已被广泛认可为一种未来的沥青路面摊铺技术。除了明显的优势外，对于用这种类型的沥青混合料铺设的路面的耐久性和长期性能仍存在一些担忧。最重要的问题之一是温拌沥青的低温性能，因为用于降低温度的某些添加剂会影响沥青性能。本文介绍了对使用选定温拌沥青添加剂的实验室生产的磨耗层沥青混凝土的低温性能的评估。本研究使用了一种50/70号道路石油沥青和五种不同性质（有机、表面张力降低剂以及两者的组合）的温拌沥青添加剂。与参考混合料的温度相比，含有温拌沥青添加剂的混合料的生产和压实温度低25℃。为了评估温拌沥青对低温开裂的敏感性，采用了半圆弯曲试验（SCB）和热应力约束试件试验（TSRST）。通过分析沥青结合料的弯曲梁流变仪（BBR）试验结果进行补充评级。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2bd/6981633/e3d5f0f999e8/materials-13-00202-g012.jpg
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本文引用的文献

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Materials (Basel). 2019 Oct 26;12(21):3514. doi: 10.3390/ma12213514.
2
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Materials (Basel). 2019 Apr 19;12(8):1285. doi: 10.3390/ma12081285.
3
Influence of Bitumen Type and Asphalt Mixture Composition on Low-Temperature Strength Properties According to Various Test Methods.
高模量沥青混凝土抗低温开裂的现场评估
Materials (Basel). 2022 Jan 4;15(1):369. doi: 10.3390/ma15010369.
4
Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures.波特兰水泥和聚合物粉末对水泥稳定基层混合料性能的影响。
Materials (Basel). 2020 Sep 24;13(19):4253. doi: 10.3390/ma13194253.
根据各种试验方法，沥青类型和沥青混合料组成对低温强度性能的影响。
Materials (Basel). 2018 Oct 28;11(11):2118. doi: 10.3390/ma11112118.
4
Application of Fly Ash Derived Zeolites in Warm-Mix Asphalt Technology.粉煤灰衍生沸石在温拌沥青技术中的应用。
Materials (Basel). 2018 Aug 27;11(9):1542. doi: 10.3390/ma11091542.