{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T02:45:46Z","timestamp":1762051546499,"version":"build-2065373602"},"reference-count":24,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,5,17]],"date-time":"2022-05-17T00:00:00Z","timestamp":1652745600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation for Science and Technology (FCT)","doi-asserted-by":"publisher","award":["PD\/BD\/135193\/2017"],"award-info":[{"award-number":["PD\/BD\/135193\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fibers"],"abstract":"<jats:p>Renders should have an adequate resistance to impacts, since they must protect the substrate. The use of fibres may enhance the energy absorbed when the mortars are submitted to an impact load, which contributes to postpone the first crack, and control its propagation and width. In this study, the impact strength was measured by a falling mass from different heights. The cracking pattern and the impact energy for the appearance of the first crack and until failure were evaluated. An artificial accelerated ageing test was also performed, and the impact resistance was analysed before and after ageing. In order to analyse the effects of recycled fibres, wool, coir, flax and textile-acrylic waste fibres were used as reinforcement in cement and cement-lime mortars. The results indicated that the fibres\u2019 addition significantly improved the impact energy of the rendering mortars in comparison with the reference mortars. Concerning the crack patterns, the recycled fibres prevented the opening or the growth of the cracks, before and after ageing. This effect is mainly due to the fibre\u2019s bridge mechanism, due to crossing the open cracks and hindering their propagation. The fibres\u2019 type, length and volume fraction have influenced the mortars\u2019 performance in terms of impact resistance. Textile-acrylic fibres waste presented the best performance by comparison with the natural fibres used.<\/jats:p>","DOI":"10.3390\/fib10050044","type":"journal-article","created":{"date-parts":[[2022,5,17]],"date-time":"2022-05-17T08:34:29Z","timestamp":1652776469000},"page":"44","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Impact Resistance of Rendering Mortars with Natural and Textile-Acrylic Waste Fibres"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9869-7229","authenticated-orcid":false,"given":"Cinthia","family":"Maia Pederneiras","sequence":"first","affiliation":[{"name":"CERIS, Instituto Superior T\u00e9cnico, University of Lisbon, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal"},{"name":"National Laboratory for Civil Engineering, Av. do Brasil 101, 1700-066 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7135-8603","authenticated-orcid":false,"given":"Ros\u00e1rio","family":"Veiga","sequence":"additional","affiliation":[{"name":"National Laboratory for Civil Engineering, Av. do Brasil 101, 1700-066 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6766-2736","authenticated-orcid":false,"given":"Jorge","family":"de Brito","sequence":"additional","affiliation":[{"name":"CERIS, Instituto Superior T\u00e9cnico, University of Lisbon, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"124424","DOI":"10.1016\/j.conbuildmat.2021.124424","article-title":"Incorporation of high contents of textile, acrylic and glass waste fibres in cement-based mortars. Influence on mortars\u2019 fresh, mechanical and deformability behaviour","volume":"303","author":"Veiga","year":"2021","journal-title":"Constr. Build. Mater."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1016\/j.jclepro.2018.03.183","article-title":"Impact behavior and microstructure of cement mortar incorporating waste carpet fibers after exposure to high temperatures","volume":"187","author":"Xuan","year":"2018","journal-title":"J. Clean. Prod."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Araya-Letelier, G., Antico, F.C., Concha-riedel, J., Glade, A., and Wiener, M.J. (2019). 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Green Technol."}],"container-title":["Fibers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-6439\/10\/5\/44\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:11:38Z","timestamp":1760137898000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-6439\/10\/5\/44"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5,17]]},"references-count":24,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2022,5]]}},"alternative-id":["fib10050044"],"URL":"https:\/\/doi.org\/10.3390\/fib10050044","relation":{},"ISSN":["2079-6439"],"issn-type":[{"type":"electronic","value":"2079-6439"}],"subject":[],"published":{"date-parts":[[2022,5,17]]}}}