Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber

This article aims to improve the toughness of pre-packaged grouts (PPG) by incorporating crumb rubber. The mechanism for toughness of PPG with crumb rubber was analyzed based on the uniaxial compression model. Crumb rubber with surfaces treated by different methods (NaOH solutions or microwave treat...

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Autores principales:	Wei Yuan, Renfeng Yang, Jianyou Yu, Shixin Zhou, Shaoqian Cui, Jian Kang, Zechen Yao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	crumb rubber toughness surface-treated pre-packaged grouts influencing mechanisms preparation methods Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/e2d8f31c6ea94849a34b8ff680d752f3
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spelling	oai:doaj.org-article:e2d8f31c6ea94849a34b8ff680d752f32021-11-25T17:00:31ZPreparation and Properties Study of Cementitious Grouts Containing Crumb Rubber10.3390/buildings111105552075-5309https://doaj.org/article/e2d8f31c6ea94849a34b8ff680d752f32021-11-01T00:00:00Zhttps://www.mdpi.com/2075-5309/11/11/555https://doaj.org/toc/2075-5309This article aims to improve the toughness of pre-packaged grouts (PPG) by incorporating crumb rubber. The mechanism for toughness of PPG with crumb rubber was analyzed based on the uniaxial compression model. Crumb rubber with surfaces treated by different methods (NaOH solutions or microwave treatment) was observed by scanning electron microscopy (SEM). The effects of mesh sizes, amounts, surface-treated methods of crumb rubber, and mixing procedures on the PPG’s mechanical strength and rheological properties were investigated. The results showed that, firstly, the addition of crumb rubber improves the PPG’s toughness, while its mechanical strength is reduced. Adding NaOH solutions or microwave-treated crumb rubber into PPG can weaken the negative effects of crumb rubber on the PPG’s mechanical strength; however, this function is limited. Secondly, the crumb rubber grouts’ rheological properties can be fully exploited by increasing the stirring rate and time so that the fluidity of crumb rubber grouts is improved, which fulfils the characteristics of no bleeding and micro-expansion. Finally, the optimal formula and mixing technique of crumb rubber grouts were proposed in this paper.The results of this paper can provide a significant reference for the application of scrap tires.Wei YuanRenfeng YangJianyou YuShixin ZhouShaoqian CuiJian KangZechen YaoMDPI AGarticlecrumb rubbertoughnesssurface-treatedpre-packaged groutsinfluencing mechanismspreparation methodsBuilding constructionTH1-9745ENBuildings, Vol 11, Iss 555, p 555 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crumb rubber toughness surface-treated pre-packaged grouts influencing mechanisms preparation methods Building construction TH1-9745
spellingShingle	crumb rubber toughness surface-treated pre-packaged grouts influencing mechanisms preparation methods Building construction TH1-9745 Wei Yuan Renfeng Yang Jianyou Yu Shixin Zhou Shaoqian Cui Jian Kang Zechen Yao Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
description	This article aims to improve the toughness of pre-packaged grouts (PPG) by incorporating crumb rubber. The mechanism for toughness of PPG with crumb rubber was analyzed based on the uniaxial compression model. Crumb rubber with surfaces treated by different methods (NaOH solutions or microwave treatment) was observed by scanning electron microscopy (SEM). The effects of mesh sizes, amounts, surface-treated methods of crumb rubber, and mixing procedures on the PPG’s mechanical strength and rheological properties were investigated. The results showed that, firstly, the addition of crumb rubber improves the PPG’s toughness, while its mechanical strength is reduced. Adding NaOH solutions or microwave-treated crumb rubber into PPG can weaken the negative effects of crumb rubber on the PPG’s mechanical strength; however, this function is limited. Secondly, the crumb rubber grouts’ rheological properties can be fully exploited by increasing the stirring rate and time so that the fluidity of crumb rubber grouts is improved, which fulfils the characteristics of no bleeding and micro-expansion. Finally, the optimal formula and mixing technique of crumb rubber grouts were proposed in this paper.The results of this paper can provide a significant reference for the application of scrap tires.
format	article
author	Wei Yuan Renfeng Yang Jianyou Yu Shixin Zhou Shaoqian Cui Jian Kang Zechen Yao
author_facet	Wei Yuan Renfeng Yang Jianyou Yu Shixin Zhou Shaoqian Cui Jian Kang Zechen Yao
author_sort	Wei Yuan
title	Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
title_short	Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
title_full	Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
title_fullStr	Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
title_full_unstemmed	Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber
title_sort	preparation and properties study of cementitious grouts containing crumb rubber
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e2d8f31c6ea94849a34b8ff680d752f3
work_keys_str_mv	AT weiyuan preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT renfengyang preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT jianyouyu preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT shixinzhou preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT shaoqiancui preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT jiankang preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber AT zechenyao preparationandpropertiesstudyofcementitiousgroutscontainingcrumbrubber
_version_	1718412809554886656

Preparation and Properties Study of Cementitious Grouts Containing Crumb Rubber

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