Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade

Coarse-grained materials are widely used in high-speed railway construction, and it is of great significance to research its compaction characteristics due to the high quality control requirements. In this regard, a field compaction experiment was conducted at a subgrade near Bazhou Station of Beiji...

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Autores principales:	Shanzhen Li, Yangsheng Ye, Liang Tang, Degou Cai, Shuang Tian, Xianzhang Ling
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	coarse-grained materials compaction characteristic subgrade <i>CMV</i> quality evaluation geostatistical analysis 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/d6dedb5b12bb40ce90eb5d0499efa7bb
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spelling	oai:doaj.org-article:d6dedb5b12bb40ce90eb5d0499efa7bb2021-11-25T18:15:19ZExperimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade10.3390/ma142269721996-1944https://doaj.org/article/d6dedb5b12bb40ce90eb5d0499efa7bb2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6972https://doaj.org/toc/1996-1944Coarse-grained materials are widely used in high-speed railway construction, and it is of great significance to research its compaction characteristics due to the high quality control requirements. In this regard, a field compaction experiment was conducted at a subgrade near Bazhou Station of Beijing-Xiong’an Intercity Railway. The test results of the compaction effect were presented in this study at first. The roller-integrated compaction measurements (i.e., compaction meter value, <i>CMV</i>) were compared with several traditional in-situ tests (i.e., plate load test, light falling weight deflectometer test, and shear wave velocity test). Then the stability of <i>CMV</i> was evaluated by the proposed <i>δ</i> criterion. The spatial uniformity of compaction was further investigated. Based on the analysis, the target value of <i>CMV</i> was preliminarily determined. It showed that <i>E</i><sub>vd</sub> was more variable than <i>CMV</i>. The results convincingly indicated that the compaction parameters increased with the increasing number of roller passes at first. A further increase in compaction effort could result in the decompaction of material when the compaction number up to a certain value. The stability analysis method proposed in this study showed its potency of quantifying the percentage of areas with acceptable compaction. The geostatistical analysis could reflect the spatial uniformity of compaction. Overall, the conducted study could provide a useful reference for geo-material compaction control in the transportation engineering.Shanzhen LiYangsheng YeLiang TangDegou CaiShuang TianXianzhang LingMDPI AGarticlecoarse-grained materialscompaction characteristicsubgrade<i>CMV</i>quality evaluationgeostatistical analysisTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6972, p 6972 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coarse-grained materials compaction characteristic subgrade <i>CMV</i> quality evaluation geostatistical analysis 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	coarse-grained materials compaction characteristic subgrade <i>CMV</i> quality evaluation geostatistical analysis 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 Shanzhen Li Yangsheng Ye Liang Tang Degou Cai Shuang Tian Xianzhang Ling Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
description	Coarse-grained materials are widely used in high-speed railway construction, and it is of great significance to research its compaction characteristics due to the high quality control requirements. In this regard, a field compaction experiment was conducted at a subgrade near Bazhou Station of Beijing-Xiong’an Intercity Railway. The test results of the compaction effect were presented in this study at first. The roller-integrated compaction measurements (i.e., compaction meter value, <i>CMV</i>) were compared with several traditional in-situ tests (i.e., plate load test, light falling weight deflectometer test, and shear wave velocity test). Then the stability of <i>CMV</i> was evaluated by the proposed <i>δ</i> criterion. The spatial uniformity of compaction was further investigated. Based on the analysis, the target value of <i>CMV</i> was preliminarily determined. It showed that <i>E</i><sub>vd</sub> was more variable than <i>CMV</i>. The results convincingly indicated that the compaction parameters increased with the increasing number of roller passes at first. A further increase in compaction effort could result in the decompaction of material when the compaction number up to a certain value. The stability analysis method proposed in this study showed its potency of quantifying the percentage of areas with acceptable compaction. The geostatistical analysis could reflect the spatial uniformity of compaction. Overall, the conducted study could provide a useful reference for geo-material compaction control in the transportation engineering.
format	article
author	Shanzhen Li Yangsheng Ye Liang Tang Degou Cai Shuang Tian Xianzhang Ling
author_facet	Shanzhen Li Yangsheng Ye Liang Tang Degou Cai Shuang Tian Xianzhang Ling
author_sort	Shanzhen Li
title	Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
title_short	Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
title_full	Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
title_fullStr	Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
title_full_unstemmed	Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade
title_sort	experimental study on the compaction characteristics and evaluation method of coarse-grained materials for subgrade
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d6dedb5b12bb40ce90eb5d0499efa7bb
work_keys_str_mv	AT shanzhenli experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade AT yangshengye experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade AT liangtang experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade AT degoucai experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade AT shuangtian experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade AT xianzhangling experimentalstudyonthecompactioncharacteristicsandevaluationmethodofcoarsegrainedmaterialsforsubgrade
_version_	1718411468520554496

Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade

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