Figure 2
From: Self-healing capacity of fiber-reinforced calcium phosphate cements

(a) Fracture surface of PO4-CPC showing capsules distribution as well as (b) size distribution of NaH2PO4 capsules.
From: Self-healing capacity of fiber-reinforced calcium phosphate cements

(a) Fracture surface of PO4-CPC showing capsules distribution as well as (b) size distribution of NaH2PO4 capsules.