Performances of asphalt mastic incorporating with a home-made sustained-releasing salt storage additive

IF 6.5 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Case Studies in Construction Materials Pub Date : 2024-12-11 DOI:10.1016/j.cscm.2024.e04114

Wei Du , Qing-liang Wang , Yong-xu Li , Xiao-ning Wang , Xiao-cun Liu , Ya-fei Wang , Yan-min Wang , Jin Li

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Abstract

The absence of intrinsic deicing capabilities in conventional asphalt mastic poses a critical challenge in cold-climate regions, where the accumulation of snow and ice can result in hazardous traffic conditions. This research introduces the synthesis and integration of a proprietary salt-storage additive, designated DN-PF, into asphalt mastic for the development of self-deicing pavements. The DN-PF additive comprises a sodium chloride (NaCl) core, supported by diatomite and encapsulated in a phenolic resin matrix, engineered to confer self-deicing functionality to asphalt mastic. The DN-PF asphalt mastic was prepared by substituting all filler with equivalent-volume of DN-PF. A comprehensive assessment of the asphalt mastic properties were investigated via penetration, ductility, softening point, the dynamic shear rheometer (DSR) and Bending Beam Rheometer (BBR) tests. The sustained-releasing efficacy of the DN-PF asphalt mastic was also examined by conductivity test. The results indicated that the inclusion of DN-PF improves the high temperature stability and shear resistance of the DN-PF asphalt mastic. However, it also decreases the plasticity and low-temperature anti-cracking property of the mastic. The dissolution amount of snowmelt salt remained stable with uniform dissolution speed, highlighting enhanced sustained-release properties of additives. However, in our study the DSR experimental design was constrained to temperature scanning, neglecting frequency and time domain scanning, which precluded a comprehensive assessment of mid-temperature fatigue performance. As a result, the fatigue behavior at intermediate temperatures necessitates further research.

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掺加自制缓释储盐添加剂的沥青胶泥性能研究

传统沥青胶泥缺乏固有的除冰能力，在寒冷气候地区，冰雪的积累可能导致危险的交通状况，这是一个严峻的挑战。本研究介绍了一种专有的盐储存添加剂DN-PF的合成和集成，用于开发自除冰路面。DN-PF添加剂包括氯化钠（NaCl）芯，由硅藻土支撑，并包裹在酚醛树脂基体中，旨在赋予沥青胶泥自除冰功能。用等体积的DN-PF代替所有填料制备了DN-PF沥青胶泥。通过渗透、延性、软化点、动态剪切流变仪（DSR）和弯曲梁流变仪（BBR）试验，对沥青胶粘剂的性能进行了综合评价。通过电导率测试，考察了DN-PF沥青胶泥的缓释效果。结果表明，DN-PF的加入提高了DN-PF沥青胶泥的高温稳定性和抗剪性能。但也降低了胶粘剂的塑性和低温抗裂性能。融雪盐的溶解量保持稳定，溶解速度均匀，添加剂的缓释性能增强。然而，在我们的研究中，DSR实验设计仅限于温度扫描，忽略了频率和时域扫描，这妨碍了对中温疲劳性能的全面评估。因此，在中等温度下的疲劳行为需要进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Case Studies in Construction Materials Multiple-

CiteScore

7.60

自引率

19.40%

发文量

842

审稿时长

63 days

期刊介绍： Case Studies in Construction Materials provides a forum for the rapid publication of short, structured Case Studies on construction materials. In addition, the journal also publishes related Short Communications, Full length research article and Comprehensive review papers (by invitation). The journal will provide an essential compendium of case studies for practicing engineers, designers, researchers and other practitioners who are interested in all aspects construction materials. The journal will publish new and novel case studies, but will also provide a forum for the publication of high quality descriptions of classic construction material problems and solutions.