Research on the Long-Term Acoustic Efficiency of Asphalt Mixtures Using CRM in Test Sections of Slovak Roads

IF 1.1 Q3 ENGINEERING, CIVIL

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI:10.2478/cee-2023-0053

Katarína Hodásová, Mária Trojanová, Andrej Rubint

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Abstract

Abstract The article presents the possibilities of utilizing waste from the automotive industry, namely old tires, in constructing pavements. The application of shredded rubber creates conditions for devulcanization, which improves the rheological properties of the binder and ensures its better dissolution in asphalt. The focus is on assessing the condition of the pavement surface, measuring the noise level in the vicinity of the road, and quantifying and evaluating the cost of implementing an asphalt pavement design with a crumb rubber modifier (CRM). A visual inspection was performed after 6 years of pavement life. Based on the inspection outputs, the pavement surface structure was in a favourable condition with no permanent deformations. Verifying the acoustic properties showed a noise reduction compared to the road section with the modified asphalt pavement surface. Currently, the price of rubber-modified asphalt for pavement in Slovakia is on average 10 to 15 % higher than the price of other modified mixes. However, we can conclude that pavements with CRM are economically and especially ecologically more advantageous in the long run.

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在斯洛伐克道路试验路段使用 CRM 对沥青混合料的长期声效进行研究

摘要文章介绍了在铺设路面时利用汽车工业废料（即旧轮胎）的可能性。碎橡胶的应用为脱硫化创造了条件，从而改善了粘结剂的流变特性，并确保其在沥青中更好地溶解。重点是评估路面表面状况、测量道路附近的噪音水平，以及量化和评估使用碎胶改性剂（CRM）的沥青路面设计的成本。路面使用 6 年后进行目测。根据检测结果，路面表面结构状况良好，没有永久变形。声学特性验证结果表明，与使用改性沥青路面的路段相比，噪音有所降低。目前，斯洛伐克用于路面的橡胶改性沥青的价格比其他改性混合料的价格平均高出 10%至 15%。不过，我们可以得出结论，从长远来看，使用 CRM 的路面在经济上，特别是在生态方面更具优势。

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

Civil and Environmental Engineering ENGINEERING, CIVIL-

CiteScore

2.00

自引率

58.30%

发文量