Comprehensive analysis of mechanical characteristics in self-compacting concrete (SCC) with aluminum oxide (Al2O3) nanoparticles and glass fibers: An experimental and analytical investigation

IF 6.5 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Case Studies in Construction Materials Pub Date : 2024-12-07 DOI:10.1016/j.cscm.2024.e04095
Hamed Heidarzad Moghaddam , Mohammad Ali Lotfollahi-Yaghin , Ahmad Maleki
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Abstract

This research investigates the synergistic effects of aluminum oxide (Al2O3) nanoparticles and glass fibers on the mechanical and durability properties of self-compacting concrete (SCC) using an experimental and analytical approach. The experimental analysis involved assessing fresh concrete properties and mechanical performance through tests such as compressive strength, splitting tensile strength, slump flow, L-box, V-funnel, T50, ultrasonic pulse velocity, and bond strength. Durability was evaluated using water absorption, water penetration depth, and electrical resistance tests. Glass fibers were added at volumes of 0 %, 0.5 %, 1.0 %, and 1.5 %, while Al2O3 nanoparticles were incorporated at weight percentages of 0 %, 0.5 %, 1.0 %, 1.5 %, 2.0 %, and 3.0 %. The optimal mix, comprising 2.0 % Al2O3 nanoparticles and 1.5 % glass fibers, resulted in a 61 % increase in compressive strength and a 107.6 % increase in tensile strength. Water absorption was reduced by up to 46 %, while electrical resistance increased by 265 %, demonstrating improved durability. The combination also enhanced bond strength by 39 %, providing better adhesion between rebars and concrete. Analytical correlations between mechanical and bond properties were established. This study offers crucial insights for optimizing SCC performance, making it highly relevant for structural applications.
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来源期刊
CiteScore
7.60
自引率
19.40%
发文量
842
审稿时长
63 days
期刊介绍: Case Studies in Construction Materials provides a forum for the rapid publication of short, structured Case Studies on construction materials. In addition, the journal also publishes related Short Communications, Full length research article and Comprehensive review papers (by invitation). The journal will provide an essential compendium of case studies for practicing engineers, designers, researchers and other practitioners who are interested in all aspects construction materials. The journal will publish new and novel case studies, but will also provide a forum for the publication of high quality descriptions of classic construction material problems and solutions.
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