Improved performance of calcareous sand subgrade reinforced by soilbags under traffic load

Autor:	Yijie Zhou, Ming Wu, Guangya Ding, Jun Wang
Rok vydání:	2021
Předmět:	Polypropylene Improved performance chemistry.chemical_compound chemistry Earth and Planetary Sciences (miscellaneous) Traffic load Geotechnical engineering Subgrade Geotechnical Engineering and Engineering Geology Granular material Calcareous Dynamic load testing Geology
Zdroj:	Proceedings of the Institution of Civil Engineers - Geotechnical Engineering. 174:670-681
ISSN:	1751-8563 1353-2618
Popis:	The performance of a subgrade composed of layered soilbags fabricated from polypropylene (PP) woven geotextiles filled with calcareous sands was investigated. Dynamic load tests were performed in an indoor model groove. The vibration acceleration, soil pressure and vertical deformation were analysed, and a vibration attenuation coefficient and deformation reduction ratio were developed. The results showed that the common quartz sand subgrade was softer than the calcareous sand subgrade subjected to traffic loads. The calcareous sand filling subgrade showed different acceleration attenuation features and the soilbag reinforcement reduced the cumulative deformation. Through the combined effects of a woven PP bag and expandable polyethylene foam, the subgrade reinforced with soilbags made from the composite material showed the best performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ecea8bcdd6903fbc60efd8af51921bcd https://doi.org/10.1680/jgeen.19.00210 Zobrazit plný text záznamu