Abstract
This article presented the effect of mixing patterns for the bio-cement in two different soils (Kaolin clay and Bangkok sand). Bio-cementation process initiated the crystal forms of calcium carbonate (CaCO3) to bind the soil particles. Soil samples were mixed with the solution containing 250 mM of CO(NH2)2, 250 mM of Ca2+ (by CaCl2) and 20% (v/v) of urease. In simulated deep mixing of Kaolin clay, the research found that blades used in solution mixing affected the strength development of Kaolin clay after bio-cementation. The V s of 210 m s−1 was found in comb blade mixer. In simulated deep mixing of Bangkok sand, the research found that solution injecting method affected the V s of Bangkok sand. The period drop and the period injecting methods provided better V s results than the one time pouring and the continuous injecting methods.
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Acknowledgement
The authors are grateful for the scientific research fund of the King Mongkut’s University of Technology North Bangkok No. KMUTNB-Gov-59-09.
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Piriyakul, K., Iamchaturapatr, J. (2017). Deep Soil Mixing Method for the Bio-cement by Means of Bender Element Test. In: Ferrari, A., Laloui, L. (eds) Advances in Laboratory Testing and Modelling of Soils and Shales (ATMSS). ATMSS 2017. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-52773-4_44
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DOI: https://doi.org/10.1007/978-3-319-52773-4_44
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