Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China

To investigate the quality of dry soil mixing (DSM) columns in different soft soil areas of east China, a large number of laboratory test results and field test results of DSM columns were collected and analyzed statistically. Furthermore, a quality assessment method for DSM columns is proposed in t...

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Autores principales:	Huangsong Pan, Guangyin Du, Han Xia, Haiyuan Wang, Da Qin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dry soil mixing soft soil statistical analysis quality assessment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/21eabd8a4c9e4230ab85693b5e265d4a
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spelling	oai:doaj.org-article:21eabd8a4c9e4230ab85693b5e265d4a2021-11-11T15:02:46ZQuality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China10.3390/app112199572076-3417https://doaj.org/article/21eabd8a4c9e4230ab85693b5e265d4a2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9957https://doaj.org/toc/2076-3417To investigate the quality of dry soil mixing (DSM) columns in different soft soil areas of east China, a large number of laboratory test results and field test results of DSM columns were collected and analyzed statistically. Furthermore, a quality assessment method for DSM columns is proposed in this paper. The hardness description (HD), standard penetration test (SPT), unconfined compressive strength (UCS), and soil-cement column quality designation (SCQD) are used as assessment indexes. The statistical analysis showed that the test results of SPT, UCS, and SCQD were scattered, particularly in shallow ground. The mean values of the SPT blow count, UCS, and SCQD of the DSM columns decreased with depth: the greater the depth, the worse the quality of DSM columns. The quality assessment results showed that the proportion of the great quality columns was 64.84%, and the proportion of the unqualified columns was 1.4%. The proportion of DSM columns with great quality in the lagoon soft soil area was greater than in other areas. The proportion of unqualified columns in the lacustrine soft soil area was the largest. For all soft soil areas, the proportions of great quality, good quality, general quality, and unqualified soil decreased in that order. The quality assessment of 8627 DSM columns showed the proportions of great quality and unqualified were 64.84% and 1.4%, respectively. It was found that the greater the depth of the DSM column, the more unqualified DSM columns, and the more difficult it was to control the quality of DSM columns.Huangsong PanGuangyin DuHan XiaHaiyuan WangDa QinMDPI AGarticledry soil mixingsoft soilstatistical analysisquality assessmentTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9957, p 9957 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dry soil mixing soft soil statistical analysis quality assessment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	dry soil mixing soft soil statistical analysis quality assessment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Huangsong Pan Guangyin Du Han Xia Haiyuan Wang Da Qin Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
description	To investigate the quality of dry soil mixing (DSM) columns in different soft soil areas of east China, a large number of laboratory test results and field test results of DSM columns were collected and analyzed statistically. Furthermore, a quality assessment method for DSM columns is proposed in this paper. The hardness description (HD), standard penetration test (SPT), unconfined compressive strength (UCS), and soil-cement column quality designation (SCQD) are used as assessment indexes. The statistical analysis showed that the test results of SPT, UCS, and SCQD were scattered, particularly in shallow ground. The mean values of the SPT blow count, UCS, and SCQD of the DSM columns decreased with depth: the greater the depth, the worse the quality of DSM columns. The quality assessment results showed that the proportion of the great quality columns was 64.84%, and the proportion of the unqualified columns was 1.4%. The proportion of DSM columns with great quality in the lagoon soft soil area was greater than in other areas. The proportion of unqualified columns in the lacustrine soft soil area was the largest. For all soft soil areas, the proportions of great quality, good quality, general quality, and unqualified soil decreased in that order. The quality assessment of 8627 DSM columns showed the proportions of great quality and unqualified were 64.84% and 1.4%, respectively. It was found that the greater the depth of the DSM column, the more unqualified DSM columns, and the more difficult it was to control the quality of DSM columns.
format	article
author	Huangsong Pan Guangyin Du Han Xia Haiyuan Wang Da Qin
author_facet	Huangsong Pan Guangyin Du Han Xia Haiyuan Wang Da Qin
author_sort	Huangsong Pan
title	Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
title_short	Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
title_full	Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
title_fullStr	Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
title_full_unstemmed	Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China
title_sort	quality assessment of dry soil mixing columns in soft soil areas of eastern china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/21eabd8a4c9e4230ab85693b5e265d4a
work_keys_str_mv	AT huangsongpan qualityassessmentofdrysoilmixingcolumnsinsoftsoilareasofeasternchina AT guangyindu qualityassessmentofdrysoilmixingcolumnsinsoftsoilareasofeasternchina AT hanxia qualityassessmentofdrysoilmixingcolumnsinsoftsoilareasofeasternchina AT haiyuanwang qualityassessmentofdrysoilmixingcolumnsinsoftsoilareasofeasternchina AT daqin qualityassessmentofdrysoilmixingcolumnsinsoftsoilareasofeasternchina
_version_	1718437292292440064

Quality Assessment of Dry Soil Mixing Columns in Soft Soil Areas of Eastern China

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