Research on a Treatment Measure for Base Regeneration by Preset Cracking and Grouting for Severe Reflective Cracks

• Published in: Arabian journal for science and engineering (2011) Vol. 47; no. 4; pp. 4695 - 4712
• Main Authors: Jiao, Zhihao, Shen, Aiqin, Lyu, Zhenghua, Guo, Yinchuan, Wang, Lusheng, Wang, Shengnan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2022; Springer Nature B.V
• Subjects: Asphalt pavements; Coupling; Crack propagation; Cracks; Dynamic loads; Engineering; Fatigue cracks; Fatigue failure; Fracture mechanics; Grouting; Humanities and Social Sciences; multidisciplinary; Pavement materials; Regeneration; Research Article-Civil Engineering; Rigid pavements; Science; Temperature gradients; Tensile stress; Cracking coefficient; Mechanical response; Reflective crack; Semi-rigid base asphalt pavement
• ISSN: 2193-567X; 1319-8025; 2191-4281
• DOI: 10.1007/s13369-021-06246-7

Reflective cracks in asphalt pavement are major distresses in semi-rigid pavement. To date, grouting and jointing filling are commonly used to solve this problem. However, the grouting materials cannot be filled with cracks that have not propagated to the surface of base. Thus, these measures are limited to reducing the potential cracks in the base. This paper presents a comprehensive treatment measure of base regeneration by preset cracking and grouting (BRPCG) to repair the semi-rigid pavement with severe reflective cracks. The effect of BRPCG on the crack resistance of pavement was investigated by a linear elastic model. The dynamic load and the dynamic load–temperature coupling programs were designed to obtain the mechanical responses of pavement. Furthermore, mechanical indexes based on fatigue and yield failures of pavement materials and crack coefficients were proposed to evaluate the crack resistance and safety of pavement. The results showed that the temperature difference and aging of the original pavement are two factors that should be considered when simulating the pavement structure in service. The temperature of the coupling effect has a greater influence on the tensile stress of the structure layer compared to the dynamic load. The overload conditions only increased the value of the mechanical indexes without changing the variation trend of these indexes.