Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 216, Issue -, Pages 405-415Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.04.258
Keywords
Natural hydraulic lime (NHL) mortars; Elastic Modulus Measurement through; Ambient Response Method (EMM-ARM); Stiffness evolution; Ultrasonic pulse velocity test (UPV); Sample preparation
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Funding
- Portuguese Foundation for Science and Technology (FCT) [PTDC/ECM-EST/1056/2014 (POCI-01-0145-FEDER-016841), POCI-01-0145-FEDER-007633]
- Ministerio de Economia y Competitividad, Spain [BIA2015-68678-C2-1-R]
- Ministerio de Educacion, Cultura y Deporte, Spain [FPU014/05186]
- Universidad de Castilla-La Mancha (UCLM) [2016/11635]
- Ministerio de Ciencia, Innovacion y Universidades, Spain [RTC-2017-6736-3]
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This paper focuses on the mechanical characterization of the early age behavior of three NHL mortars with different water/lime ratios. A vibration-based technique with continuous data recording (Elastic Modulus Measurement through Ambient Response Method - EMM-ARM) was used to measure stiffness of the different mortars that were found to range between 2.5 and 4.1 GPa on day 7. Other physical and mechanical properties such as strength and density were measured as a function of sample preparation protocols-vibrated, compacted, sealed and unsealed. After 7 days, sealed specimens led to 50% lower compressive strength and 25% lower flexural strength compared to unsealed specimens. (C) 2019 Elsevier Ltd. All rights reserved.
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