预硫化液体天然橡胶改性沥青混凝土在温拌温度条件下的抗车辙性和弹性模量

IF 4.3 3区工程技术 Q1 ENGINEERING, CIVIL

Journal of Civil Engineering and Management Pub Date : 2022-02-24 DOI:10.3846/jcem.2022.16452

Irfan, B. S. Subagio, E. Hariyadi, Indra Maha

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引用次数: 3

摘要

预硫化液态天然橡胶（PVLNR）改性沥青会带来粘度增加等问题，从而将混合和压实温度提高到175°C，加速老化过程。因此，有必要开发在较低混合温度下使用PVLNR的方法，这需要温混合技术。本研究旨在评价PVLNR改性沥青在温拌沥青中的应用。实验室测试包括流变改性沥青、和易性分析、弹性模量和变形。结果表明，PVLNR含量降低，渗透性提高，软化点和沥青粘度增加。此外，添加剂Rediset LQ还起到降低沥青粘度的作用。PVLNR改性沥青的优点是增加了弹性回收率，节省了沥青用量，提高了热拌沥青橡胶（HAR）和温拌沥青橡胶的模量。此外，WAR的Rutting抗性优于HMA和WMA。

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THE RUTTING RESISTANCE AND RESILIENT MODULI OF PRE-VULCANIZED LIQUID NATURAL RUBBER MODIFIED ASPHALTIC CONCRETE IN WARM-MIX TEMPERATURE CONDITION

Pre-Vulcanized Liquid Natural Rubber (PVLNR) modified asphalt leaves problems such as increasing the viscosity, thereby increasing the mixing and compaction temperature up to 175 °C, accelerating the ageing process. Therefore it is necessary to do developing methods using PVLNR at lower mixing temperatures requires warm-mix technology. This study aimed to evaluate the use of PVLNR modified asphalt in warm mix asphalt (WMA). Laboratory testing includes rheological modified asphalt, the workability analysis, Resilient Modulus and Deformation. The results showed that the PVLNR content decreased penetration increased the softening point and asphalt viscosity. In addition, additive Rediset LQ plays a role in reducing asphalt viscosity. The advantages of PVLNR modified asphalt are increasing elastic recovery, saving asphalt consumption and increasing the Modulus of hot mix asphalt rubber (HAR) and warm mix asphalt rubber (WAR). In addition, the Rutting resistance of WAR is better than that of HMA and WMA.

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来源期刊

Journal of Civil Engineering and Management ENGINEERING, CIVIL-

CiteScore

6.70

自引率

4.70%

发文量

审稿时长

1.7 months

期刊介绍： The Journal of Civil Engineering and Management is a peer-reviewed journal that provides an international forum for the dissemination of the latest original research, achievements and developments. We publish for researchers, designers, users and manufacturers in the different fields of civil engineering and management. The journal publishes original articles that present new information and reviews. Our objective is to provide essential information and new ideas to help improve civil engineering competency, efficiency and productivity in world markets. The Journal of Civil Engineering and Management publishes articles in the following fields: building materials and structures, structural mechanics and physics, geotechnical engineering, road and bridge engineering, urban engineering and economy, constructions technology, economy and management, information technologies in construction, fire protection, thermoinsulation and renovation of buildings, labour safety in construction.