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The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete

Despite the advantageous benefits offered by self-compacting concrete, its uses are still limited due to the high pressure exerted on the formwork. Different parameters, such as those related to concrete mix design, the properties of newly poured concrete, and placement method, have an impact on for...

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Autores principales: Gamil, Yaser, Cwirzen, Andrzej, Nilimaa, Jonny, Emborg, Mats
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863822/
https://www.ncbi.nlm.nih.gov/pubmed/36676495
http://dx.doi.org/10.3390/ma16020759
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author Gamil, Yaser
Cwirzen, Andrzej
Nilimaa, Jonny
Emborg, Mats
author_facet Gamil, Yaser
Cwirzen, Andrzej
Nilimaa, Jonny
Emborg, Mats
author_sort Gamil, Yaser
collection PubMed
description Despite the advantageous benefits offered by self-compacting concrete, its uses are still limited due to the high pressure exerted on the formwork. Different parameters, such as those related to concrete mix design, the properties of newly poured concrete, and placement method, have an impact on form pressure. The question remains unanswered on the degree of the impact for each parameter. Therefore, this study aims to study the level of impact of these parameters, including slump flow, T500 time, fresh concrete density, air content, static yield stress, concrete setting time, and concrete temperature. To mimic the casting scenario, 2 m columns were cast at various casting rates and a laboratory setup was developed. A pressure system that can wirelessly and continuously record pressure was used to monitor the pressure. Each parameter’s impact on the level of pressure was examined separately. Casting rate and slump flow were shown to have a greater influence on pressure. The results also demonstrated that, while higher thixotropy causes form pressure to rapidly decrease, a high casting rate and high slump flow lead to high pressure. This study suggests that more thorough analysis should be conducted of additional factors that may have an impact, such as the placement method, which was not included in this publication.
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spelling pubmed-98638222023-01-22 The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete Gamil, Yaser Cwirzen, Andrzej Nilimaa, Jonny Emborg, Mats Materials (Basel) Article Despite the advantageous benefits offered by self-compacting concrete, its uses are still limited due to the high pressure exerted on the formwork. Different parameters, such as those related to concrete mix design, the properties of newly poured concrete, and placement method, have an impact on form pressure. The question remains unanswered on the degree of the impact for each parameter. Therefore, this study aims to study the level of impact of these parameters, including slump flow, T500 time, fresh concrete density, air content, static yield stress, concrete setting time, and concrete temperature. To mimic the casting scenario, 2 m columns were cast at various casting rates and a laboratory setup was developed. A pressure system that can wirelessly and continuously record pressure was used to monitor the pressure. Each parameter’s impact on the level of pressure was examined separately. Casting rate and slump flow were shown to have a greater influence on pressure. The results also demonstrated that, while higher thixotropy causes form pressure to rapidly decrease, a high casting rate and high slump flow lead to high pressure. This study suggests that more thorough analysis should be conducted of additional factors that may have an impact, such as the placement method, which was not included in this publication. MDPI 2023-01-12 /pmc/articles/PMC9863822/ /pubmed/36676495 http://dx.doi.org/10.3390/ma16020759 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
Gamil, Yaser
Cwirzen, Andrzej
Nilimaa, Jonny
Emborg, Mats
The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title_full The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title_fullStr The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title_full_unstemmed The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title_short The Impact of Different Parameters on the Formwork Pressure Exerted by Self-Compacting Concrete
title_sort impact of different parameters on the formwork pressure exerted by self-compacting concrete
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863822/
https://www.ncbi.nlm.nih.gov/pubmed/36676495
http://dx.doi.org/10.3390/ma16020759
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