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Temperature effects on the strengh properties of microbially stabilized residual soil
Umar, Murtala1, Khairul Anuar Kassim2, Chiet, Kenny Tiong Ping3.
Microbially Induced Calcite Precipitation (MICP) is a rather new technology that
has shown greater potential in geotechnical engineering applications. The
technique utilizes the concept of microbial involvements in carbonate
precipitation within the soil matrix that lead to the improvement in strength and
stiffness of the soil. This paper evaluated the effects of temperature variations on
the performance of microbial calcite precipitations in residual soil. The soil
specimens were cured under different temperature conditions; that are
atmospheric temperature, 40, 45 and 50oC. Shear strength, pH and amount of
calcite precipitated were determined for each curing condition. A bacterial
concentration of 1×105 cfu/ml and 0.5 M concentration of the cementation
reagents were used for the study. The results indicated a general increase in
strength with increase in curing temperature; which is an indication of
temperature influence in bacterial activity. The results so far obtained also
revealed that the higher the amount of calcite precipitated the more the
strength improvement up to 48 hours treatment duration; after which increase in
calcite content does not results in the increase in strength.
Affiliation:
- Universiti Teknologi Malaysia, Malaysia
- Universiti Teknologi Malaysia, Malaysia
- Universiti Teknologi Malaysia, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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6 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.4) |
Rank |
Q3 (Engineering (all)) |
Additional Information |
SJR (0.191) |
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