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The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials

Numerous studies have been conducted on fiber-reinforced concrete; however, comparative investigations specifically focusing on the utilization of fibers in CLSM remain limited. In this study, we conducted a systematic investigation into the mechanical properties of controlled low-strength material...

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Autores principales: Qian, Yafeng, Jiang, Mingyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419460/
https://www.ncbi.nlm.nih.gov/pubmed/37569988
http://dx.doi.org/10.3390/ma16155287
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author Qian, Yafeng
Jiang, Mingyang
author_facet Qian, Yafeng
Jiang, Mingyang
author_sort Qian, Yafeng
collection PubMed
description Numerous studies have been conducted on fiber-reinforced concrete; however, comparative investigations specifically focusing on the utilization of fibers in CLSM remain limited. In this study, we conducted a systematic investigation into the mechanical properties of controlled low-strength material (CLSM) by manipulating the length and doping amount of fibers as control variables. The 7-day compressive strength (7d-UCS), 28-day compressive strength (28d-UCS), and 28-day splitting strength of CLSM were employed as indicators to evaluate the material’s performance. Based on our comprehensive analysis, the following conclusions were drawn: (1) A positive correlation was observed between fiber length and material strength within the range of 0–6 mm, while conversely, a negative correlation was evident. Similarly, when the fiber doping was within the range of 0–0.3%, a positive correlation was identified between material strength and fiber doping. However, the strength of CLSM decreased when fiber doping exceeded 0.3%. (2) SEM and PCAS analyses provided further confirmation that the incorporation of fibers effectively reduced the porosity of the material by filling internal pores and interacting with hydration products, thereby forming a mesh structure. Overall, this study offers valuable insights into the manipulation of fiber length and doping amount to optimize the mechanical properties of CLSM. The findings have important implications for the practical application of CLSM, particularly in terms of enhancing its strength through fiber incorporation.
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spelling pubmed-104194602023-08-12 The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials Qian, Yafeng Jiang, Mingyang Materials (Basel) Article Numerous studies have been conducted on fiber-reinforced concrete; however, comparative investigations specifically focusing on the utilization of fibers in CLSM remain limited. In this study, we conducted a systematic investigation into the mechanical properties of controlled low-strength material (CLSM) by manipulating the length and doping amount of fibers as control variables. The 7-day compressive strength (7d-UCS), 28-day compressive strength (28d-UCS), and 28-day splitting strength of CLSM were employed as indicators to evaluate the material’s performance. Based on our comprehensive analysis, the following conclusions were drawn: (1) A positive correlation was observed between fiber length and material strength within the range of 0–6 mm, while conversely, a negative correlation was evident. Similarly, when the fiber doping was within the range of 0–0.3%, a positive correlation was identified between material strength and fiber doping. However, the strength of CLSM decreased when fiber doping exceeded 0.3%. (2) SEM and PCAS analyses provided further confirmation that the incorporation of fibers effectively reduced the porosity of the material by filling internal pores and interacting with hydration products, thereby forming a mesh structure. Overall, this study offers valuable insights into the manipulation of fiber length and doping amount to optimize the mechanical properties of CLSM. The findings have important implications for the practical application of CLSM, particularly in terms of enhancing its strength through fiber incorporation. MDPI 2023-07-27 /pmc/articles/PMC10419460/ /pubmed/37569988 http://dx.doi.org/10.3390/ma16155287 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Qian, Yafeng
Jiang, Mingyang
The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title_full The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title_fullStr The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title_full_unstemmed The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title_short The Influence of Fiber on the Mechanical Properties of Controllable Low-Strength Materials
title_sort influence of fiber on the mechanical properties of controllable low-strength materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419460/
https://www.ncbi.nlm.nih.gov/pubmed/37569988
http://dx.doi.org/10.3390/ma16155287
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