Improvement of Surface Erosion Resistance of Sand by Microbial Biopolymer Formation

Cited 3 time in webofscience Cited 0 time in scopus
  • Hit : 167
  • Download : 0
Direct use of naturally occurring microbes for soil improvement has recently gained attention due to their ubiquitous and versatile characteristics in subsurface soil. Microbes produce soft and sticky extracellular polymeric substances (or biopolymers) that are known to alter the hydrological characteristics of soils; however, the mechanisms and extent of such soft biopolymers in altering soil erosion resistance remain scarcely explored. This study explored the role of microbial biopolymers in soil erosion resistance. The surface erosion resistance of sandy soils was evaluated by using a hybrid erosion function apparatus, in which the model bacteria Leuconostoc mesenteroides were stimulated to produce an insoluble biopolymer. The results revealed that the microbial biopolymer formation increased the critical shear stress and surface erosion resistance, which the researchers attributed to the increased cohesion by grain-coating biopolymer slimes and the reduced seepage flows due to pore clogging. This study provides baseline but promising results on how microbially grown biopolymers can be used to improve soil erosion resistance.
Publisher
ASCE-AMER SOC CIVIL ENGINEERS
Issue Date
2018-07
Language
English
Article Type
Article
Keywords

UNCONSOLIDATED POROUS-MEDIA; PERMEABILITY REDUCTION; RESIDUAL SOIL; BRIDGE PIERS; SCOUR RATE; IN-SITU; DEXTRAN; STABILIZATION; APPARATUS

Citation

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, v.144, no.7

ISSN
1090-0241
DOI
10.1061/(ASCE)GT.1943-5606.0001900
URI
http://hdl.handle.net/10203/242447
Appears in Collection
CE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 3 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0