Study on the Relationship between Mechanical Properties and Mesostructure of Microbial Cemented Sand Bodies

Table 1

Orthogonal factor level.

Factor	Factor level					Number
Bacterial concentration (Mb)	0.25	0.5	1.0	1.5	2.0	5
Bacterial fluid flow (Qb)	1 ml/min	3 ml/min	5 ml/min	10 ml/min	15 ml/min	5
Bacterial solution standing time (Tb)	1 h	3 h	5 h	8 h	12 h	5
Cement concentration (Mc)	0.25 M	0.5 M	0.75 M	1 M	1.5 M	5
Cement flow (Qc)	1 ml/min	3 ml/min	5 ml/min	10 ml/min	15 ml/min	5
Cementation standing time (Tc)	1 h	3 h	5 h	8 h	12 h	5

Note. The concentration of bacterial liquid is characterized by its OD₆₀₀ value.