MICP地基处理文献可用于深基坑工程。讲述了MICP（巴氏芽孢杆菌处理地基）的过程和基本原理。通俗易

文件名称: MICP地基处理文献

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详细说明：可用于深基坑工程。讲述了MICP（巴氏芽孢杆菌处理地基）的过程和基本原理。通俗易懂，好用好学0.2 shear-strength behavior. Therefore, vs is the better method to quan 0.1 60.05 tify the level of cementation for MICP-treated sands 0 0.1 0.15 0.2 Conclusions 200 600 800 1000 Two MICP-treated specimens with the same cementation content behave differently under same cyclic stress ratio, which indicates that average mass of calcium content alone may be insufficient to s0.5 evaluate the behavior of micp-cemented soil. Instead the shear- wave velocity measurements correspond with the behavior ob- served during cyclic loading (i.e, the specimen with the larger 200 1000 shcar-wavc vclocity exhibits an incrcasc in cycles prior to gener- ation of significant strains and excess pore pressure). In practice the combination of shear-wave velocity measurements and calcite content is a better indicator of the behavior of micP-cemented soil Acknowledgments 400 800 1000 Cyclic Number Funding from the National Science Foundation(CMMI#1537007 EEC#1342207 y op ndings, d 0.2 0.2 conclusions or recommendations cxprcsscd in this matcrial arc 0.15 0.15 0.1 0.1 those of the authors and do not necessarily reflect the views of the 0.05 0.05 National science foundation &0 0.05 005 0.1 0.1 References -0.15 0.15 0.2 0.2 0.5 lI Qabany, A, Mortensen, B, Martinez, B, Soga, K, and DeJong, J Axial Strain aa(%) (2011)."Microbial carbonate precipitation: Correlation of S-wave p/pc velocity with calcite precipitation. " Geotech. Spec. Publ., 211 Fig. 2. Cyclic loading response of treated specimen with a treated Vs of 3993-4001 676 m/s(C-3)under cyclic stress ratio of 0. 14: (a) normalized shear- Al Qabany, A, and Soga, K.(2013)."Effect of chemical treatment used in MICP on engineering properties of cemented soils. Geotechnique, stress curve; (b)normalized pore-pressure curve; (c)axial deformation 63(4),331-3 (d)normalized shear stress versus axial strain;(e) normalized stress Chou, C, Seagren, E, Aydilek, A, and Lai, M.(2011). "Biocalcification of path sand through urcolysis. J. Geotech. Geoenviron. Eng, 10 1061/ (ASCE)GT19435606.0000532,11791189 Chu,J, Stabnikov, V, and Ivanov, V(2012). "Microbially induced calcium carbonate precipitation on surface or in the bulk of soil. Geomicrobiol J.29(6),544-54 Clough, Gi, Iwabuchi, Rad, N, and Kuppusamy, ' T(1989).Influence of C-2 cementation on liquefaction of sands. " J. Geotech. Eng, 10 1061/ C-3 (ASCE0733-9410(1989)115:8(1102),1102-1117 DeJong, J. T, Fritzges, M. B, and Nusslein, K.(2006)."Microbially induced cementation to control sand response to undrained shear J. Geulech. Geoenvirun. Eng, 101061/(ASCE)1090-0241(2006)132 11(1381),1381-1392. DcJong, J. T, Mortensen, B. M, Martinez, B. C, and Nelson, D. C (2010)."Bio-mediated soil improvement EcoL. Eng, 36(2), 197-210 Feng, K, and Montoya, B. M.(2016)."Influence of confinement and cementation level on the behavior of microbial induced calcite precipi tated sands under monotonic loading.. Geotech. Geoenviron. Eng 0.1061/(ASCE)GI.1943-5606.0001379,04015057 Lee, J -S, and Santamarina, J. C, (2005).""Bender elements: Performance and signal interpretation. "J. Geotech. Geoenviron. Eng. 10 1061/ 00 0.5 1.0 1.5 2.0 (ASCE)1090-0241(2005)131:9(1063),1063-1070 Mass of calcium Content ( % Lin, H, Suleiman, M. T, Brown, D.G.,and Kavazanjian, E.(2016) Mechanical behavior of sands treated by microbially induced Fig 3. Cementation distribution along the height of the specimens; for carbonate prccipitation. J. Geotech. Geoenviron. Eng, 142(2), 10 convenience of presentation, section numbers 1-6 were assigned to .1061/ ASCEGT.1943-5606.0001383,04015066 each part of the specimen with the sequences of Section 1 at the bottom Martinez, B, et al.(2013)."Experimental optimization of microbial- and Section 6 at the top; cementation value of each section was plotted induced carbonate precipitation for soil improvement. J. Geotech at its middle position (e. g, a height value of 5.5 was chosen for Geoenviron.Eng.,10.106/( ASCEGT1943-56060000787,587-598 Section 6) Mohsin, A.K.M, and Airey, D. W(2003)."Automating Gmax measure ment in triaxial tests. Deformation characteristics of geomaterials, C ASCE 060170053 J Geotech. Geoenviron Eng H. D)i Benedetto, ' T Doanh, H. Geoffroy, and C. Sauzeat, eds, Swets nduced calcium cartonate precipitation. J. Appl. Microhiol, 111(2) Zeitlinger. Lisse. Lyon. France. 73-80 338-349 Montoya, B. M, and DeJong, J. T(2015). "Stress-strain behavior of sands Weil, M. H, DeJong, J. T, Martinez, B C, and Mortensen, B M.(2012) cemented by microbially induced calcite precipitation. J Geotech Geo Seismic and resistivity measurements for real-time monitoring of mi environ.E,10.106l/ASCE)GT1943-5606.0001302,04015019 crobially induced calcite precipitation in sand ASTM. Geotech Test. Montoya, B. M, DeJong, J. T, and Boulanger, R. W.(2013)."Dynamic 35(2),330-341 response of liquefiable sand improved by microbial-induced calcite pre Zhao, Q, Li, L, Li, C, Li, M, Amini, F, and Zhang, H(2014)."Factors cipitation. Geotechnique, 63(4), 302-312 affecting improvement of engineering properties of MICP-treated soil Mortensen, B. M, Haber, M. J, DcJong, J. T. Caslakc, L. F, and catalyzed by bacteria and urcasc. J. Mater. Civ. Eng, 101061/(ASCE) Nelson, D. C.(2011)."Effects of environmental factors on microbial MT.1943-5533.001013,04014094. C ASCE 06017005-4 J. Geotech. Geoenviron Eng

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