Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents

To provide the most effective comprehensive performance grouting material ratio, in this experimental investigation, a total of eight grouted specimens with two water-cement ratios (0.45:1, 0.55:1) and four different superfine cement contents (0%, 30%, 70%, 100%) were evaluated. Based on a uniaxial...

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Autores principales:	Dongyue Zhang, Zhenqian Ma, Yihuai Zou, Hongfei Xie, Ruichong Guan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	superfine cement uniaxial compression test fractal dimension of debris mercury intrusion porosimetry scanning electron microscopy Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/e017aa85572945c98f5070f6028c4295
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spelling	oai:doaj.org-article:e017aa85572945c98f5070f6028c42952021-11-11T18:12:23ZStudy on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents10.3390/ma142167091996-1944https://doaj.org/article/e017aa85572945c98f5070f6028c42952021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6709https://doaj.org/toc/1996-1944To provide the most effective comprehensive performance grouting material ratio, in this experimental investigation, a total of eight grouted specimens with two water-cement ratios (0.45:1, 0.55:1) and four different superfine cement contents (0%, 30%, 70%, 100%) were evaluated. Based on a uniaxial compression test, the fractal dimension of the fragments, a mercury injection test, and scanning electron microscopy, the effects of the superfine cement content on the strength characteristics and microscopic characteristics of the grouted specimens were studied. The results showed that increasing the superfine cement content could enhance the compressive and tensile strength of the grouted specimens and reduce the fractal dimension of the fragments and the porosity of the grouted specimens. The superfine cement content increased from 0% to 70% when the water-cement ratio was 0.45:1. The compressive strength of the grouted specimens increased from 16.7 MPa to 26.3 MPa, and the fractal dimension decreased from 1.8645 to 1.2301. When the water-cement ratio was 0.55:1, the compressive strength of the grouted specimens increased from 10.5 MPa to 20.6 MPa, and the fractal dimension value decreased from 2.2955 to 1.4458. When the superfine cement content increased from 0% to 100%, the water-cement ratio was 0.45:1. The porosity of the grouted specimens was reduced from 28.41% to 21.62%. When the water-cement ratio was 0.55:1, the porosity of the grouted specimens was reduced from 33.33% to 29.46%.Dongyue ZhangZhenqian MaYihuai ZouHongfei XieRuichong GuanMDPI AGarticlesuperfine cementuniaxial compression testfractal dimension of debrismercury intrusion porosimetryscanning electron microscopyTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6709, p 6709 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	superfine cement uniaxial compression test fractal dimension of debris mercury intrusion porosimetry scanning electron microscopy Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	superfine cement uniaxial compression test fractal dimension of debris mercury intrusion porosimetry scanning electron microscopy Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Dongyue Zhang Zhenqian Ma Yihuai Zou Hongfei Xie Ruichong Guan Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
description	To provide the most effective comprehensive performance grouting material ratio, in this experimental investigation, a total of eight grouted specimens with two water-cement ratios (0.45:1, 0.55:1) and four different superfine cement contents (0%, 30%, 70%, 100%) were evaluated. Based on a uniaxial compression test, the fractal dimension of the fragments, a mercury injection test, and scanning electron microscopy, the effects of the superfine cement content on the strength characteristics and microscopic characteristics of the grouted specimens were studied. The results showed that increasing the superfine cement content could enhance the compressive and tensile strength of the grouted specimens and reduce the fractal dimension of the fragments and the porosity of the grouted specimens. The superfine cement content increased from 0% to 70% when the water-cement ratio was 0.45:1. The compressive strength of the grouted specimens increased from 16.7 MPa to 26.3 MPa, and the fractal dimension decreased from 1.8645 to 1.2301. When the water-cement ratio was 0.55:1, the compressive strength of the grouted specimens increased from 10.5 MPa to 20.6 MPa, and the fractal dimension value decreased from 2.2955 to 1.4458. When the superfine cement content increased from 0% to 100%, the water-cement ratio was 0.45:1. The porosity of the grouted specimens was reduced from 28.41% to 21.62%. When the water-cement ratio was 0.55:1, the porosity of the grouted specimens was reduced from 33.33% to 29.46%.
format	article
author	Dongyue Zhang Zhenqian Ma Yihuai Zou Hongfei Xie Ruichong Guan
author_facet	Dongyue Zhang Zhenqian Ma Yihuai Zou Hongfei Xie Ruichong Guan
author_sort	Dongyue Zhang
title	Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
title_short	Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
title_full	Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
title_fullStr	Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
title_full_unstemmed	Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents
title_sort	study on the strength and micro characteristics of grouted specimens with different superfine cement contents
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e017aa85572945c98f5070f6028c4295
work_keys_str_mv	AT dongyuezhang studyonthestrengthandmicrocharacteristicsofgroutedspecimenswithdifferentsuperfinecementcontents AT zhenqianma studyonthestrengthandmicrocharacteristicsofgroutedspecimenswithdifferentsuperfinecementcontents AT yihuaizou studyonthestrengthandmicrocharacteristicsofgroutedspecimenswithdifferentsuperfinecementcontents AT hongfeixie studyonthestrengthandmicrocharacteristicsofgroutedspecimenswithdifferentsuperfinecementcontents AT ruichongguan studyonthestrengthandmicrocharacteristicsofgroutedspecimenswithdifferentsuperfinecementcontents
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Study on the Strength and Micro Characteristics of Grouted Specimens with Different Superfine Cement Contents

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