Physical-mechanical behavior of concretes exposed to high temperatures and different cooling systems
2016; Wiley; Volume: 18; Issue: 3 Linguagem: Inglês
10.1002/suco.201500202
ISSN1751-7648
AutoresGermán Darío Ercolani, Néstor F. Ortega, Carla Priano, Lilia Señas,
Tópico(s)Fire dynamics and safety research
ResumoStructural ConcreteVolume 18, Issue 3 p. 487-495 TECHNICAL PAPER Physical–mechanical behavior of concretes exposed to high temperatures and different cooling systems Germán Ercolani, Germán Ercolani orcid.org/0000-0003-2268-2068 Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, ArgentinaSearch for more papers by this authorNéstor F. Ortega, Corresponding Author Néstor F. Ortega nfortega@criba.edu.ar Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaCorrespondence Néstor F. Ortega, Departamento de Ingeniería, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina. Email: nfortega@criba.edu.arSearch for more papers by this authorCarla Priano, Carla Priano Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaSearch for more papers by this authorLilia Señas, Lilia Señas Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaSearch for more papers by this author Germán Ercolani, Germán Ercolani orcid.org/0000-0003-2268-2068 Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, ArgentinaSearch for more papers by this authorNéstor F. Ortega, Corresponding Author Néstor F. Ortega nfortega@criba.edu.ar Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaCorrespondence Néstor F. Ortega, Departamento de Ingeniería, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina. Email: nfortega@criba.edu.arSearch for more papers by this authorCarla Priano, Carla Priano Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaSearch for more papers by this authorLilia Señas, Lilia Señas Departamento de Ingeniería, Universidad Nacional del Sur, Bahía Blanca, ArgentinaSearch for more papers by this author First published: 25 October 2016 https://doi.org/10.1002/suco.201500202Citations: 7 Funding information Universidad Nacional del Sur; CIC; CONICET. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Over their lifetime, concrete structures can suffer from different pathologies, one of them is exposure to high temperatures, which diminishes their load-bearing capacity. This study describes how different concrete types were exposed to high temperatures. To simulate fire extinction, where the temperature of the overheated concrete descends suddenly, different cooling systems were applied: slowly cooling in the open air and fast cooling by spraying different water volumes. Several physical–mechanical characteristics were analyzed such as compressive strength, splitting tensile strength, porosity, capillary suction, and carbonation depth. Ultrasound nondestructive tests were conducted to quantify deterioration. A petrographic study using a stereomicroscope and microscopy of polarization was performed on thin sections to evaluate aggregate composition and concrete characteristics, focusing on interface areas. Physical and mechanical properties were affected by the increase in temperature, with damage worsening through the appearance of cracks and microcracks when water is used as a cooling system. Citing Literature Volume18, Issue3June 2017Pages 487-495 RelatedInformation
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