Laboratory and Statistical Analysis of the Fatigue Response of Self-Healing Asphalt Mixtures Containing Metal By-Products

Coatings

MiguelÁ. Calzada-Pérez¹  Daniel Castro-Fresno²  Marta Vila-Cortavitarte²  Daniel Jato-Espino³ 

[1] GCS Research Group, Universidad de Cantabria, 39005 Santander, Spain;GITECO Research Group, Universidad de Cantabria, 39005 Santander, Spain;School of Engineering, Science and Technology, Universidad Internacional de Valencia, Calle Pintor Sorolla 21, 46002 Valencia, Spain;

关键词: asphalt mixture;    fatigue;    metal by-products;    statistical analysis;    self-healing;    waste valorization;   

DOI  :  10.3390/coatings11040385

来源: DOAJ

【 摘 要 】

Fatigue is one of the main forms of deterioration in asphalt mixtures, endangering their service life due to the progressive appearance and expansion of cracks. A sustainable approach to increase the lifetime of asphalt pavement has been found in self-healing technology, especially if boosted with metal by-products due to their economic and environmental interest. Under these circumstances, this research addressed the fatigue behavior of self-healing asphalt mixtures including industrial sand blasting by-products obtained from sieving and aspiration processes. Hence, a uniaxial fatigue test was carried out to determine whether these experimental mixtures can provide a similar response to that of a reference asphalt concrete (AC-16). This analysis was undertaken with the support of descriptive and inferential statistics, whose application proved the absence of significant differences in the fatigue performance of self-healing experimental mixtures with respect to conventional asphalt concrete. These results suggest that designing self-healing mixtures with metal by-products is a sustainable approach to increase the lifetime of asphalt pavements, while contributing to the circular economy through diverse economic and environmental benefits.

【 授权许可】

Unknown