{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T20:43:35Z","timestamp":1775853815158,"version":"3.50.1"},"reference-count":61,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2023,7,17]],"date-time":"2023-07-17T00:00:00Z","timestamp":1689552000000},"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":["PTDC\/ECM-COM1734\/2012"],"award-info":[{"award-number":["PTDC\/ECM-COM1734\/2012"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation for Science and Technology (FCT)","doi-asserted-by":"publisher","award":["UIDB\/04625\/2020"],"award-info":[{"award-number":["UIDB\/04625\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation for Science and Technology (FCT)","doi-asserted-by":"publisher","award":["SFRH\/BD\/100397\/2014"],"award-info":[{"award-number":["SFRH\/BD\/100397\/2014"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation for Science and Technology (FCT)","doi-asserted-by":"publisher","award":["2020.09705.BD"],"award-info":[{"award-number":["2020.09705.BD"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sustainability"],"abstract":"<jats:p>Structural lightweight aggregate concrete is currently an alternative to normal-weight concrete when thermal insulation properties are required to meet the objectives of energy efficiency and sustainability. The accurate evaluation of the thermal performance is thus essential for designing structural lightweight concrete elements. This paper aims to evaluate the thermal behavior of structural lightweight aggregate concrete, assessed through different tests methods. To this end, a vast experimental campaign was carried out involving specimens produced with several types of lightweight aggregate and different water\/cement ratios. The thermal performance was established by thermal conductivity, which was determined according to a modified transient pulse method and a quasi-stationary method, and specific heat capacity, which was determined through a transient pulse method and a heat transfer method. Normal-weight concrete was also tested for comparison purposes. Experimental evidence showed that lightweight aggregate concretes with lower density are associated with up to about 50% lower thermal conductivity and higher specific heat capacity than normal-weight concrete. Moreover, the study demonstrated that the expeditious transient pulse method is suitable for assessing the thermal conductivity of this type of concrete, and that both the transient pulse method and the heat transfer method are adequate to determine the specific heat capacity.<\/jats:p>","DOI":"10.3390\/su151411105","type":"journal-article","created":{"date-parts":[[2023,7,18]],"date-time":"2023-07-18T01:31:32Z","timestamp":1689643892000},"page":"11105","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Thermal Performance Assessment of Lightweight Aggregate Concrete by Different Test Methods"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1499-1370","authenticated-orcid":false,"given":"Maria da Gl\u00f3ria","family":"Gomes","sequence":"first","affiliation":[{"name":"CERIS, Department of Civil Engineering, Architecture and Georesources (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"given":"Jos\u00e9 Alexandre","family":"Bogas","sequence":"additional","affiliation":[{"name":"CERIS, Department of Civil Engineering, Architecture and Georesources (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1546-9197","authenticated-orcid":false,"given":"Sofia","family":"Real","sequence":"additional","affiliation":[{"name":"CERIS, Department of Civil Engineering, Architecture and Georesources (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"given":"Ant\u00f3nio","family":"Moret Rodrigues","sequence":"additional","affiliation":[{"name":"CERIS, Department of Civil Engineering, Architecture and Georesources (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3106-9337","authenticated-orcid":false,"given":"Rita","family":"Machete","sequence":"additional","affiliation":[{"name":"CERIS, Department of Civil Engineering, Architecture and Georesources (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1016\/j.enbuild.2004.09.009","article-title":"Applying support vector machines to predict building energy consumption in tropical region","volume":"37","author":"Dong","year":"2005","journal-title":"Energy Build."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"198","DOI":"10.1016\/j.enbuild.2016.06.089","article-title":"Building energy-consumption status worldwide and the state-of-the-art technologies for zero-energy buildings during the past decade","volume":"128","author":"Cao","year":"2016","journal-title":"Energy Build."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1016\/j.enbuild.2013.12.029","article-title":"Evaluation of thermal conductivity, mechanical and transport properties of lightweight aggregate foamed geopolymer concrete","volume":"72","author":"Liu","year":"2014","journal-title":"Energy Build."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"798","DOI":"10.1680\/jmacr.15.00424","article-title":"Thermal conductivity of structural lightweight aggregate concrete","volume":"68","author":"Real","year":"2015","journal-title":"Mag. 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