PMID- 36903064
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230314
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 16
IP  - 5
DP  - 2023 Feb 27
TI  - Experimental Study on the Mechanical Behaviors of Aeolian Sand Treated by 
      Microbially Induced Calcite Precipitation (MICP) and Basalt Fiber Reinforcement 
      (BFR).
LID - 10.3390/ma16051949 [doi]
LID - 1949
AB  - Aeolian sand flow is a major cause of land desertification, and it is prone to 
      developing into a dust storm coupled with strong wind and thermal instability. 
      The microbially induced calcite precipitation (MICP) technique can significantly 
      improve the strength and integrity of sandy soils, whereas it easily leads to 
      brittle destruction. To effectively inhibit land desertification, a method 
      coupled with MICP and basalt fiberreinforcement (BFR) was put forward to enhance 
      the strength and toughness of aeolian sand. Based on a permeability test and an 
      unconfined compressive strength (UCS) test, the effects of initial dry density 
      (rho(d)), fiber length (FL), and fiber content (FC) on the characteristics of 
      permeability, strength, and CaCO(3) production were analyzed, and the 
      consolidation mechanism of the MICP-BFR method was explored. The experiments 
      indicated that the permeability coefficient of aeolian sand increased first, then 
      decreased, and subsequently increased with the increase in FC, whereas it 
      exhibited a tendency to decrease first and then increase with the increase in FL. 
      The UCS increased with the increase in the initial dry density, while it 
      increased first and then decreased with the increase in FL and FC. Furthermore, 
      the UCS increased linearly with the increase in CaCO(3) generation, and the 
      maximum correlation coefficient reached 0.852. The CaCO(3) crystals played the 
      roles of providing bonding, filling, and anchoring effects, and the spatial mesh 
      structure formed by the fibers acted as a bridge effect to enhance the strength 
      and brittle damage of aeolian sand. The findings could supply a guideline for 
      sand solidification in desert areas.
FAU - Liu, Jia
AU  - Liu J
AUID- ORCID: 0000-0002-2392-6629
AD  - School of Geological Engineering and Geomatics, Chang'an University, Xi'an 
      710054, China.
FAU - Li, Xi'an
AU  - Li X
AD  - School of Geological Engineering and Geomatics, Chang'an University, Xi'an 
      710054, China.
FAU - Li, Gang
AU  - Li G
AD  - Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing 
      University, Xi'an 710123, China.
FAU - Zhang, Jinli
AU  - Zhang J
AUID- ORCID: 0000-0002-6188-9750
AD  - State Key Laboratory of Coastal and Offshore Engineering, Dalian University of 
      Technology, Dalian 116024, China.
LA  - eng
GR  - 42230712/National Natural Science Foundation of China/
GR  - 300102261719/Fundamental Research Funds for the Central Universities, CHD/
GR  - 2021JM-535/Natural Science Basic Research Program of Shaanxi Province/
GR  - XJ18T01/Special Fund for Scientific Research by Xijing University/
PT  - Journal Article
DEP - 20230227
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC10003999
OTO - NOTNLM
OT  - MICP
OT  - aeolian sand
OT  - basalt fiber
OT  - fiber content
OT  - fiber length
COIS- The authors declare no conflict of interest.
EDAT- 2023/03/12 06:00
MHDA- 2023/03/12 06:01
PMCR- 2023/02/27
CRDT- 2023/03/11 01:23
PHST- 2023/01/08 00:00 [received]
PHST- 2023/02/16 00:00 [revised]
PHST- 2023/02/25 00:00 [accepted]
PHST- 2023/03/11 01:23 [entrez]
PHST- 2023/03/12 06:00 [pubmed]
PHST- 2023/03/12 06:01 [medline]
PHST- 2023/02/27 00:00 [pmc-release]
AID - ma16051949 [pii]
AID - materials-16-01949 [pii]
AID - 10.3390/ma16051949 [doi]
PST - epublish
SO  - Materials (Basel). 2023 Feb 27;16(5):1949. doi: 10.3390/ma16051949.