Biogrouting of hydraulic fill fine sands for reclamation projects

被引：16

作者：

Lian, Jijian ^{[1
]}

Xu, Hongyin ^{[1
]}

He, Xiaoqing ^{[1
]}

Yan, Yue ^{[1
]}

Fu, Dengfeng ^{[1
]}

Yan, Shuwang ^{[1
]}

Qi, Hao ^{[2
]}

机构：

[1] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Key Lab Syst Bioengn, Tianjin, Peoples R China

来源：

MARINE GEORESOURCES & GEOTECHNOLOGY | 2019年 / 37卷 / 02期

基金：

国家重点研发计划;

关键词：

Biogrouting; calcium carbonate distribution; calcium ion utilization; geotechnical performances; hydraulic fill sands; MICROBIAL CARBONATE PRECIPITATION; INDUCED CALCITE PRECIPITATION; CHEMICAL TREATMENT; SOIL; CONSTRUCTION; STRENGTH; MICP;

D O I：

10.1080/1064119X.2017.1420115

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Biogrouting, which is a new method for soil improvement, was used in an attempt to cement a type of hydraulic fill fine sands (called black sands) in reclamation projects in Tianjin, China, to form a working layer for mechanical equipment. Several factors influencing biogrouting with regard to cementing solution, including injection frequency, reaction time, concentration, and flow rate, were controlled to prepare black sand columns. This paper reports on an investigation of bacterial fixation, calcium ion utilization, and calcium carbonate distributions of biogrouted sand specimens. At the end of the tests, the geotechnical performances of the sand specimens were determined. The results showed that the biogrouting method effectively solidified black sands, by increasing the unconfined compressive strength of a sand column to 1.91 MPa and reducing the permeability coefficient by three orders of magnitude. A relationship between the unconfined compressive strengths and calcium carbonate contents was put forward, in addition to a relationship between the permeability coefficients and the calcium carbonate contents. According to the experimental results, some reasonable suggestions regarding the application of biogrouting to the consolidation of hydraulic fill fine sands in reclamation projects were proposed.

引用

页码：212 / 222

页数：11

共 39 条

[11]

Harkes M., 2008, P 1 INT C BIO GEO CI

[12] Fixation and distribution of bacterial activity in sand to induce carbonate precipitation for ground reinforcement [J].

Harkes, Marien P. ;

van Paassen, Leon A. ;

Booster, Jacco L. ;

Whiffin, Victoria S. ;

van Loosdrecht, Mark C. M. .

ECOLOGICAL ENGINEERING, 2010, 36 (02) :112-117

[13]

Hudson J.A., 2000, ENG ROCK MECH INTRO

[14] Applications of microorganisms to geotechnical engineering for bioclogging and biocementation of soil in situ [J].

Ivanov V. ;

Chu J. .

Reviews in Environmental Science and Bio/Technology, 2008, 7 (2) :139-153

[15] The applicability of microbially induced calcite precipitation (MICP) for internal erosion control in gravel-sand mixtures [J].

Jiang, N. -J. ;

Soga, K. .

GEOTECHNIQUE, 2017, 67 (01) :42-55

[16]

Li B., 2014, THESIS

[17] Effects of Reclamation Projects on Marine Ecological Environment in Tianjin Harbor Industrial Zone [J].

Li, Kunyu ;

Liu, Xianbin ;

Zhao, Xinggui ;

Guo, Weihua .

INTERNATIONAL CONFERENCE ON ECOLOGICAL INFORMATICS AND ECOSYSTEM CONSERVATION (ISEIS 2010), 2010, 2 :792-799

[18]

Lian J., 2018, APPL RES BIOGR UNPUB

[19]

Lian J., 2018, QUANTIFICATION UNPUB

[20]

Liu Q., 2008, Rock. Soil Mech., V29, P667

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