{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T06:02:31Z","timestamp":1776492151545,"version":"3.51.2"},"reference-count":69,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,4,9]],"date-time":"2020-04-09T00:00:00Z","timestamp":1586390400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["685445"],"award-info":[{"award-number":["685445"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This work investigated the use of ZnAl-layered double hydroxide (LDH) intercalated with nitrate or nitrite ions for controlling the corrosion of steel in reinforced concrete. The work started by analyzing the stability of the powder in the 1\u201314 pH range and the capacity for capturing chloride ions in aqueous solutions of different pH. The effect of the ZnAl-LDH on the corrosion of steel was studied in aqueous 0.05 M NaCl solution and in mortars immersed in 3.5% NaCl. It was found that the LDH powders dissolved partially at pH &gt; 12. The LDH was able to capture chloride ions from the external solution, but the process was pH-dependent and stopped at high pH due to the partial dissolution of LDH and the preferential exchange of OH\u2013 ions. These results seemed to imply that ZnAl-LDH would not work in the alkaline environment inside the concrete. Nonetheless, preliminary results with mortars containing ZnAl-LDH showed lower penetration of chloride ions and higher corrosion resistance of the steel rebars.<\/jats:p>","DOI":"10.3390\/ma13071769","type":"journal-article","created":{"date-parts":[[2020,4,9]],"date-time":"2020-04-09T14:42:03Z","timestamp":1586443323000},"page":"1769","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["Use of ZnAl-Layered Double Hydroxide (LDH) to Extend the Service Life of Reinforced Concrete"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8625-2353","authenticated-orcid":false,"given":"Celestino","family":"Gomes","sequence":"first","affiliation":[{"name":"DEMaC\u2014Department of Materials and Ceramic Engineering, Universidade de Aveiro, 3810-193 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials, Universidade de Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6488-1167","authenticated-orcid":false,"given":"Zahid","family":"Mir","sequence":"additional","affiliation":[{"name":"Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5024-3006","authenticated-orcid":false,"given":"Rui","family":"Sampaio","sequence":"additional","affiliation":[{"name":"DEMaC\u2014Department of Materials and Ceramic Engineering, Universidade de Aveiro, 3810-193 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials, Universidade de Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1847-2332","authenticated-orcid":false,"given":"Alexandre","family":"Bastos","sequence":"additional","affiliation":[{"name":"DEMaC\u2014Department of Materials and Ceramic Engineering, Universidade de Aveiro, 3810-193 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials, Universidade de Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7584-4641","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Tedim","sequence":"additional","affiliation":[{"name":"DEMaC\u2014Department of Materials and Ceramic Engineering, Universidade de Aveiro, 3810-193 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials, Universidade de Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5721-2280","authenticated-orcid":false,"given":"Frederico","family":"Maia","sequence":"additional","affiliation":[{"name":"Smallmatek\u2014Small Materials and Technologies, Lda, 3810-075 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7686-6391","authenticated-orcid":false,"given":"Cl\u00e1udia","family":"Rocha","sequence":"additional","affiliation":[{"name":"Smallmatek\u2014Small Materials and Technologies, Lda, 3810-075 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2071-9851","authenticated-orcid":false,"given":"M\u00e1rio","family":"Ferreira","sequence":"additional","affiliation":[{"name":"DEMaC\u2014Department of Materials and Ceramic Engineering, Universidade de Aveiro, 3810-193 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials, Universidade de Aveiro, 3810-193 Aveiro, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,9]]},"reference":[{"key":"ref_1","unstructured":"Darwin, D., Dolan, C.W., and Nilson, A.H. 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