Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study

To study the influence of different mix proportions on the fresh properties of wet shotcrete, the rheological properties and air content of wet shotcrete with different admixtures before pumping were measured. In addition, the pressure drop along the pipeline and the build-up thickness were studied,...

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Main Authors:	Jun Xie, Xiangfei Cui, Nan Guo, Guoming Liu
Format:	Article
Language:	English
Published:	MDPI AG 2021-04-01
Series:	Applied Sciences
Subjects:	wet shotcrete mix proportion fresh properties air content
Online Access:	https://www.mdpi.com/2076-3417/11/8/3550

id	doaj-56b074cd54b44d2b8e0bf729ffa8f5ca
record_format	Article
spelling	doaj-56b074cd54b44d2b8e0bf729ffa8f5ca2021-04-15T23:03:20ZengMDPI AGApplied Sciences2076-34172021-04-01113550355010.3390/app11083550Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case StudyJun Xie0Xiangfei Cui1Nan Guo2Guoming Liu3College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaTo study the influence of different mix proportions on the fresh properties of wet shotcrete, the rheological properties and air content of wet shotcrete with different admixtures before pumping were measured. In addition, the pressure drop along the pipeline and the build-up thickness were studied, and the relationship between the rheological properties and the pumpability and sprayability was discussed. This paper attempts to reveal the influence mechanism of admixtures on the fluidity of wet shotcrete by means of pictures. The results show that free paste effect and ball effect are two key factors that affect the performance of fresh wet shotcrete. Air-entraining agent and fly ash are commonly used admixtures, which improve the pumping performance and spraying performance. Finally, the mix proportions of wet shotcrete are put forward to meet the requirements of different types of shotcrete.https://www.mdpi.com/2076-3417/11/8/3550wet shotcretemix proportionfresh propertiesair content
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Jun Xie Xiangfei Cui Nan Guo Guoming Liu
spellingShingle	Jun Xie Xiangfei Cui Nan Guo Guoming Liu Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study Applied Sciences wet shotcrete mix proportion fresh properties air content
author_facet	Jun Xie Xiangfei Cui Nan Guo Guoming Liu
author_sort	Jun Xie
title	Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
title_short	Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
title_full	Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
title_fullStr	Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
title_full_unstemmed	Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
title_sort	influence of mix proportions on rheological properties, air content of wet shotcrete—a case study
publisher	MDPI AG
series	Applied Sciences
issn	2076-3417
publishDate	2021-04-01
description	To study the influence of different mix proportions on the fresh properties of wet shotcrete, the rheological properties and air content of wet shotcrete with different admixtures before pumping were measured. In addition, the pressure drop along the pipeline and the build-up thickness were studied, and the relationship between the rheological properties and the pumpability and sprayability was discussed. This paper attempts to reveal the influence mechanism of admixtures on the fluidity of wet shotcrete by means of pictures. The results show that free paste effect and ball effect are two key factors that affect the performance of fresh wet shotcrete. Air-entraining agent and fly ash are commonly used admixtures, which improve the pumping performance and spraying performance. Finally, the mix proportions of wet shotcrete are put forward to meet the requirements of different types of shotcrete.
topic	wet shotcrete mix proportion fresh properties air content
url	https://www.mdpi.com/2076-3417/11/8/3550
work_keys_str_mv	AT junxie influenceofmixproportionsonrheologicalpropertiesaircontentofwetshotcreteacasestudy AT xiangfeicui influenceofmixproportionsonrheologicalpropertiesaircontentofwetshotcreteacasestudy AT nanguo influenceofmixproportionsonrheologicalpropertiesaircontentofwetshotcreteacasestudy AT guomingliu influenceofmixproportionsonrheologicalpropertiesaircontentofwetshotcreteacasestudy
_version_	1721525925486526464

Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study

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