<b id="yfvhu"><address id="yfvhu"></address></b>
  1. <table id="yfvhu"><acronym id="yfvhu"><thead id="yfvhu"></thead></acronym></table>
  2. <source id="yfvhu"><td id="yfvhu"><output id="yfvhu"></output></td></source>

      [1]鄭俊杰,吳超傳,宋楊,等.MICP膠結鈣質砂的強度試驗及強度離散性研究[J].哈爾濱工程大學學報,2020,41(2):250-256.[doi:10.11990/jheu.201906023]
       ZHENG Junjie,WU Chaochuan,SONG Yang,et al.Study of the strength test and strength dispersion of MICP-treated calcareous sand[J].hebgcdxxb,2020,41(2):250-256.[doi:10.11990/jheu.201906023]
      點擊復制

      MICP膠結鈣質砂的強度試驗及強度離散性研究(/HTML)
      分享到:

      《哈爾濱工程大學學報》[ISSN:1006-6977/CN:61-1281/TN]

      卷:
      41
      期數:
      2020年2期
      頁碼:
      250-256
      欄目:
      出版日期:
      2020-02-05

      文章信息/Info

      Title:
      Study of the strength test and strength dispersion of MICP-treated calcareous sand
      作者:
      鄭俊杰 吳超傳 宋楊 崔明娟
      華中科技大學 巖土與地下工程研究所, 湖北 武漢 430074
      Author(s):
      ZHENG Junjie WU Chaochuan SONG Yang CUI Mingjuan
      Institute of Geotechnical and Underground Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
      關鍵詞:
      微生物固化鈣質砂碳酸鈣含量膠結模式強度離散性無側限抗壓強度膠結水平碳酸鈣分布均勻性差異系數
      分類號:
      TU443
      DOI:
      10.11990/jheu.201906023
      文獻標志碼:
      A
      摘要:
      對鈣質砂進行微生物固化可以顯著改善其強度等力學特性盛兴娱乐登陆,但不可避免地會出現強度離散的現象。為控制微生物固化鈣質砂強度離散性,以更好應用于工程實際,本文對3種粒徑級配的鈣質砂進行微生物固化,并基于無側限抗壓強度試驗、比重測試、碳酸鈣含量測定,探討顆粒粒徑盛兴娱乐登陆、膠結水平對微生物固化鈣質砂相關物理指標、強度以及強度離散性的影響;同時開展掃描電鏡(SEM)測試,進一步分析微生物固化鈣質砂表面細觀結構,探討強度增長的內在機理,分析影響強度離散的主要因素盛兴娱乐登陆。結果表明:微生物固化鈣質砂的強度及其離散性均隨膠結水平的提高而提高;MICP膠結產生的碳酸鈣晶體"包裹"鈣質砂顆粒的現象不利于強度的高效形成;微生物固化鈣質砂的強度離散性主要由鈣質砂土骨架差異性以及碳酸鈣分布均勻性決定。

      參考文獻/References:

      [1] 張家銘. 鈣質砂基本力學性質及顆粒破碎影響研究[D]. 武漢:中國科學院研究生院(武漢巖土力學研究所), 2004.ZHANG Jiaming. Study on the fundamental mechanical characteristics of calcareous sand and the influence of particle breakage[D]. Wuhan:Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2004.
      [2] 方祥位, 申春妮, 楚劍, 等. 微生物沉積碳酸鈣固化珊瑚砂的試驗研究[J]. 巖土力學, 2015, 36(10):2773-2779.FANG Xiangwei, SHEN Chunni, CHU Jian, et al. An experimental study of coral sand enhanced through microbially-induced precipitation of calcium carbonate[J]. Rock and soil mechanics, 2015, 36(10):2773-2779.
      [3] DEJONG J T, MORTENSEN B M, MARTINEZ B C, et al. Bio-mediated soil improvement[J]. Ecological engineering, 2010, 36(2):197-210.
      [4] CHU J, IVANOV V, STABNIKOV V, et al. Microbial method for construction of an aquaculture pond in sand[J]. Géotechnique, 2013, 63(10):871-875.
      [5] 程曉輝, 麻強, 楊鉆, 等. 微生物灌漿加固液化砂土地基的動力反應研究[J]. 巖土工程學報, 2013, 35(8):1486-1495.CHENG Xiaohui, MA Qiang, YANG Zuan, et al. Dynamic response of liquefiable sand foundation improved by bio-grouting[J]. Chinese journal of geotechnical engineering, 2013, 35(8):1486-1495.
      [6] VAN PAASSEN L A, GHOSE R, VAN DER LINDEN T J M, et al. Quantifying biomediated ground improvement by ureolysis:large-scale biogrout experiment[J]. Journal of geotechnical and geoenvironmental engineering, 2010, 136(12):1721-1728.
      [7] LEE M L, NG W S, TANAKA Y. Stress-deformation and compressibility responses of bio-mediated residual soils[J]. Ecological engineering, 2013, 60:142-149.
      [8] 劉漢龍, 肖鵬, 肖楊, 等. MICP膠結鈣質砂動力特性試驗研究[J]. 巖土工程學報, 2018, 40(1):38-45.LIU Hanlong, XIAO Peng, XIAO Yang, et al. Dynamic behaviors of MICP-treated calcareous sand in cyclic tests[J]. Chinese journal of geotechnical engineering, 2018, 40(1):38-45.
      [9] 李捷, 方祥位, 申春妮, 等. 顆粒級配對珊瑚砂微生物固化影響研究[J]. 水利與建筑工程學報, 2016, 14(6):7-12, 43.LI Jie, FANG Xiangwei, SHEN Chunni, et al. Influence of grain composition on coral sand bio-cementation[J]. Journal of water resources and architectural engineering, 2016, 14(6):7-12, 43.
      [10] 歐益希, 方祥位, 申春妮, 等. 顆粒粒徑對微生物固化珊瑚砂的影響[J]. 水利與建筑工程學報, 2016, 14(2):35-39.OU Yixi, FANG Xiangwei, SHEN Chunni, et al. Influence of particle sizes of coral sand on bio-cementation[J]. Journal of water resources and architectural engineering, 2016, 14(2):35-39.
      [11] 馬瑞男, 郭紅仙, 程曉輝, 等. 微生物拌和加固鈣質砂滲透特性試驗研究[J]. 巖土力學, 2018, 39(S2):217-223.MA Ruinan, GUO Hongxian, CHENG Xiaohui, et al. Permeability experiment study of calcareous sand treated by microbially induced carbonate precipitation using mixing methods[J]. Rock and soil mechanics, 2018, 39(S2):217-223.
      [12] AL QABANY A, SOGA K. Effect of chemical treatment used in MICP on engineering properties of cemented soils[J]. Géotechnique, 2013, 63(4):331-339.
      [13] 南京水利科學研究院. GB/T 50123-1999, 土工試驗方法標準[2007版] [S]. 北京:中國計劃出版社, 1999.Nanjing Hydraulic Research Institute. GB/T 50123-1999, Standard for soil test method[S]. Beijing:China Planning Press, 1999.
      [14] 崔明娟, 鄭俊杰, 賴漢江. 菌液注射方式對微生物固化砂土動力特性影響試驗研究[J]. 巖土力學, 2017, 38(11):3173-3178.CUI Mingjuan, ZHENG Junjie, LAI Hanjiang. Effect of method of biological injection on dynamic behavior for bio-cemented sand[J]. Rock and soil mechanics, 2017, 38(11):3173-3178.
      [15] TOBLER D J, MACLACHLAN E, PHOENIX V R. Microbially mediated plugging of porous media and the impact of differing injection strategies[J]. Ecological engineering, 2012, 42:270-278.
      [16] WHIFFIN V S. Microbial CaCO3 precipitation for the production of biocement[D]. Australia:Murdoch University, 2004.
      [17] 崔明娟, 鄭俊杰, 賴漢江. 顆粒粒徑對微生物固化砂土強度影響的試驗研究[J]. 巖土力學, 2016, 37(S2):397-402.CUI Mingjuan, ZHENG Junjie, LAI Hanjiang, et al. Experimental study of effect of particle size on strength of bio-cemented sand[J]. Rock and soil mechanics, 2016, 37(S2):397-402.
      [18] CHU Jian, IVANOV V, NAEIMI M, et al. Optimization of calcium-based bioclogging and biocementation of sand[J]. Acta geotechnica, 2014, 9(2):277-285.
      [19] 韓素芳, 杜益彥. 混凝土強度的平均值與其變異性[J]. 混凝土及加筋混凝土, 1983(4):4-8.
      [20] 孫瀟昊, 繆林昌, 童天志, 等. 砂土微生物固化過程中尿素的影響研究[J]. 巖土工程學報, 2018, 40(5):939-944.SUN Xiaohao, MIAO Linchang, TONG Tianzhi, et al. Effect of methods of adding urea in culture media on sand solidification tests[J]. Chinese journal of geotechnical engineering, 2018, 40(5):939-944.

      備注/Memo

      備注/Memo:
      收稿日期:2019-06-06。
      基金項目:國家重點研發計劃(2016YFC0800200)盛兴娱乐登陆;國家自然科學基金項目(51478201,51708243);中國博士后科學基金項目(2016M600595,2018M632862,2018T110769).
      作者簡介:鄭俊杰,男,教授,博士生導師,長江學者特聘教授;吳超傳,男,碩士研究生.
      通訊作者:吳超傳,E-mail:wuchaochuan1@hust.edu.cn.
      更新日期/Last Update: 2020-03-24
      盛兴娱乐登陆