{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T01:32:04Z","timestamp":1760578324968,"version":"build-2065373602"},"reference-count":47,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,6,4]],"date-time":"2021-06-04T00:00:00Z","timestamp":1622764800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FEDER funds through COMPETE2020 - Programa Operacional Competitividade e Internacionaliza\u00e7\u00e3o (POCI) and by national funds (PIDDAC) through FCT\/MCTES","award":["Project PTDC\/ECI-EGC\/30452\/2017 - POCI-01-0145-FEDER-030452"],"award-info":[{"award-number":["Project PTDC\/ECI-EGC\/30452\/2017 - POCI-01-0145-FEDER-030452"]}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04708\/2020","SFRH\/BD\/147838\/2019"],"award-info":[{"award-number":["UIDB\/04708\/2020","SFRH\/BD\/147838\/2019"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Geosynthetic-reinforced soil structures have been used extensively in recent decades due to their significant advantages over more conventional earth retaining structures, including the cost-effectiveness, reduced construction time, and possibility of using locally-available lower quality soils and\/or waste materials, such as recycled construction and demolition (C&amp;D) wastes. The time-dependent shear behaviour at the interfaces between the geosynthetic and the backfill is an important factor affecting the overall long-term performance of such structures, and thereby should be properly understood. In this study, an innovative multistage direct shear test procedure is introduced to characterise the time-dependent response of the interface between a high-strength geotextile and a recycled C&amp;D material. After a prescribed shear displacement is reached, the shear box is kept stationary for a specific period of time, after which the test proceeds again, at a constant displacement rate, until the peak and large-displacement shear strengths are mobilised. The shear stress-shear displacement curves from the proposed multistage tests exhibited a progressive decrease in shear stress with time (stress relaxation) during the period in which the shear box was restrained from any movement, which was more pronounced under lower normal stress values. Regardless of the prior interface shear displacement and duration of the stress relaxation stage, the peak and residual shear strength parameters of the C&amp;D material-geotextile interface remained similar to those obtained from the conventional (benchmark) tests carried out under constant displacement rate.<\/jats:p>","DOI":"10.3390\/ma14113070","type":"journal-article","created":{"date-parts":[[2021,6,4]],"date-time":"2021-06-04T11:12:13Z","timestamp":1622805133000},"page":"3070","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Time-Dependent Response of a Recycled C&amp;D Material-Geotextile Interface under Direct Shear Mode"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1001-2297","authenticated-orcid":false,"given":"Fernanda Bessa","family":"Ferreira","sequence":"first","affiliation":[{"name":"CONSTRUCT, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6540-6613","authenticated-orcid":false,"given":"Paulo M.","family":"Pereira","sequence":"additional","affiliation":[{"name":"CONSTRUCT, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6328-4504","authenticated-orcid":false,"given":"Castorina Silva","family":"Vieira","sequence":"additional","affiliation":[{"name":"CONSTRUCT, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"given":"Maria de Lurdes","family":"Lopes","sequence":"additional","affiliation":[{"name":"CONSTRUCT, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"368","DOI":"10.1016\/j.geotexmem.2009.03.003","article-title":"Soil\u2013geosynthetic interaction: Modelling and analysis","volume":"27","author":"Palmeira","year":"2009","journal-title":"Geotext. 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