Self-Healing of Concrete Cracks by Ceramsite-Loaded Microorganisms

Table 1

The mixing proportion.

Group	Cement (g)	Sand (g)	Water (g)	Ceramsite (g)	Beef extract (g)	Peptone (g)	Urea (g)	Calcium nitrate (g)	Basalt fiber (g)	Water-reducing agent (g)
C	250	338	125	196^a	—	—	—	—	8	1.0
N	250	338	125	197.6^b	—	—	2.5	1.5	8	1.2
S	250	338	125	197^c	0.3	0.5	2.5	1.5	8	1.2
SN	250	338	125	197.5^d	—	—	2.5	1.5	8	1.2

Note: ^aceramsite without loading; ^bceramsite loaded with 0.6 g beef extract and 1 g peptone; ^cceramsite loaded with 1 g spores; ^dceramsite loaded with 0.3 g beef extract, 0.5 g peptone, and 0.7 g spores.