Steel-Mortar and Flexural Mortar-Mortar Bond Strengths of Metakaolin-based Geopolymer

Steel-Mortar and Flexural Mortar-Mortar Bond Strengths of Metakaolin-based Geopolymer | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Engineering Reports This is a preprint and has not been peer reviewed. Data may be preliminary. 2 June 2025 V1 Latest version Share on Steel-Mortar and Flexural Mortar-Mortar Bond Strengths of Metakaolin-based Geopolymer Authors : Amira A.K. Hachem 0009-0004-3658-7509 [email protected] and Mohamad Ezzedine El Dandachy Authors Info & Affiliations https://doi.org/10.22541/au.174890034.41255359/v1 Published Engineering Reports Version of record Peer review timeline 378 views 179 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract This research analyzes the interfacial bond strength of metakaolin-based geopolymer mortar across two key connections: flexural mortar-mortar and steel-mortar. It investigates the influence of varying interface roughness conditions and curing age on the bond behavior of metakaolin-based geopolymer mortar (GPM) and cement-based mortar (CM). For the mortar-to-mortar bond investigation, the flexural three-point bending test was performed on smooth and grooved interfaces after 28+7 and 28+28 days of curing, complementing previous slant shear and split tensile test results. For the steel-mortar investigation, push-in tests were conducted on 10 mm diameter ribbed and 8 mm diameter smooth steel reinforcing bars, with 7 and 28 days of curing for each. Additional tests included compressive strength, ultrasonic pulse velocity, slant shear, drying shrinkage, and split tensile tests. Results demonstrate that geopolymer mortar achieves superior bond strength compared to cement mortar, with bond strengths more than double that of cement mortar. Geopolymer mortar also attained faster bond strength on grooved surfaces. Similarly, the steel-mortar bond strength of metakaolin-based geopolymer mortar was approximately four times greater than that of cement mortar with ribbed rebars, although results were closer with smooth rebars. These findings highlight the potential of metakaolin-based geopolymer mortar to enhance bond performance while reducing environmental impact, presenting a promising avenue for sustainable construction practices. Supplementary Material File (manuscript - steel-mortar and flexural mortar-mortar bond strengths of metakaolin-based geopolymer.docx) Download 2.43 MB Information & Authors Information Version history V1 Version 1 02 June 2025 Peer review timeline Published Engineering Reports Version of Record 3 Nov 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Collection Engineering Reports Keywords bond strength flexural geopolymer steel interface Authors Affiliations Amira A.K. Hachem 0009-0004-3658-7509 [email protected] Beirut Arab University View all articles by this author Mohamad Ezzedine El Dandachy Beirut Arab University View all articles by this author Metrics & Citations Metrics Article Usage 378 views 179 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Amira A.K. Hachem, Mohamad Ezzedine El Dandachy. Steel-Mortar and Flexural Mortar-Mortar Bond Strengths of Metakaolin-based Geopolymer. Authorea . 02 June 2025. DOI: https://doi.org/10.22541/au.174890034.41255359/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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