Journal Published Online: 15 July 2014
Volume 37, Issue 5

A Full Contact Flexible Mold for Preparing Samples Based on Microbial-Induced Calcite Precipitation Technology

CODEN: GTJODJ

Abstract

During microbial-induced calcium carbonate precipitation (MICP), the cementation medium needs to fully contact and react with bacteria inside a soil sample through pores of sand. The goal of this study was to develop a new sample preparation mold, i.e., a full-contact flexible mold, to prepare samples during the MICP process. The mold was constructed using a needle-punched, nonwoven geotextile material. Specimens of different sizes were prepared using the full-contact flexible mold to evaluate the engineering soil properties improved by the MICP process. The results indicated that the mechanical improvement of the MICP-treated soil using the full-contact flexible mold is one order of magnitude higher than that of the typical sample preparation method. The full-contact flexible mold enhances the contact between the bacteria and the cementation medium and promotes homogeneous calcium carbonate precipitation within the sand pores.

Author Information

Zhao, Qian
China Univ. of Geosciences, Beijing, School of Water Sources & Environment, Beijing, CN
Li, Lin
Jackson State Univ., Department of Civil and Environmental Engineering, Jackson, MS, US
Li, Chi
Inner Mongolia Univ. of Technology, College of Civil Engineering, Huhhot, CN
Zhang, Huanzen
China Univ. of Geosciences, Beijing, School of Water Sources & Environment, Beijing, CN
Amini, Farshad
Jackson State Univ., Department of Civil and Environmental Engineering, Jackson, MS, US
Pages: 6
Price: $25.00
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Details
Stock #: GTJ20130090
ISSN: 0149-6115
DOI: 10.1520/GTJ20130090