TY - JOUR
T1 - Viscosity-Enhanced EICP Treatment of Soil
AU - Pasillas, Jose N.
AU - Khodadadi, Hamed
AU - Martin, Kimberly
AU - Bandini, Paola
AU - Newtson, Craig M.
AU - Kavazanjian, Edward
N1 - Funding Information:
This material is based upon work primarily supported by the Engineering Research Center Program of the National Science Foundation (NSF) under NSF Cooperative Agreement Number EEC-1449501. Any opinions, findings and conclusions, or recommendations expressed in this material are those of the authors, and do not necessarily reflect those of the NSF. Mr. Jason Alcantar, graduate research assistant at New Mexico State University, assisted in the experimental determination of emax and emin values of the sands used in this study.
Publisher Copyright:
© 2018 American Society of Civil Engineers (ASCE).All Rights Reserved.
PY - 2018
Y1 - 2018
N2 - Glycerol and xanthan gum were employed to enhance the viscosity of the cementation solution in soil treated with enzyme-induced carbonate precipitation (EICP). The effect of increasing the viscosity of the solution was investigated because it may facilitate EICP treatment by retaining cementation solution as precipitation occurs. Columns 51 mm in diameter and 102 mm in height of Ottawa 20/30 and F-85 sands were treated with EICP solution containing no thickener, 50% (v/v) glycerol, and 0.25% (w/v) xanthan gum. Some columns had open bottom to allow drainage and some were capped to retain the cementation solution. Xanthan-enhanced EICP solution showed the highest level of fluid retention. Results showed that EICP-Treated sand can be cemented with the addition of a viscosity enhancer but that cementation quality may be affected. The level of retention did not have a strong relationship with uniformity of cementation and did not result in enhanced unconfined compressive strength.
AB - Glycerol and xanthan gum were employed to enhance the viscosity of the cementation solution in soil treated with enzyme-induced carbonate precipitation (EICP). The effect of increasing the viscosity of the solution was investigated because it may facilitate EICP treatment by retaining cementation solution as precipitation occurs. Columns 51 mm in diameter and 102 mm in height of Ottawa 20/30 and F-85 sands were treated with EICP solution containing no thickener, 50% (v/v) glycerol, and 0.25% (w/v) xanthan gum. Some columns had open bottom to allow drainage and some were capped to retain the cementation solution. Xanthan-enhanced EICP solution showed the highest level of fluid retention. Results showed that EICP-Treated sand can be cemented with the addition of a viscosity enhancer but that cementation quality may be affected. The level of retention did not have a strong relationship with uniformity of cementation and did not result in enhanced unconfined compressive strength.
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U2 - 10.1061/9780784481592.015
DO - 10.1061/9780784481592.015
M3 - Conference article
AN - SCOPUS:85048873360
SN - 0895-0563
VL - 2018-March
SP - 145
EP - 154
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 296
T2 - 3rd International Foundation Congress and Equipment Expo 2018: Innovations in Ground Improvement for Soils, Pavements, and Subgrades, IFCEE 2018
Y2 - 5 March 2018 through 10 March 2018
ER -