Mechanism for formation of porcine blood hydrogels used as additives in the mortar of traditional Chinese architectural painting

Heritage Science

Table 1 Components and forms of the model samples

Samples	Blood:Lime water (g/g)	Blood:CaO (g/g)	Form
PB	100:0	100:0	Sol
PBG_0.03	100:3	100:0.6	Sol
PBG_0.04	100:4	100:0.8	Sol
PBG_0.05	100:5	100:1.0	Hydrogel
PBG_0.06	100:6	100:1.2	Hydrogel
PBG_0.07	100:7	100:1.4	Hydrogel

^*1. PBG—a mixture of porcine blood and lime water; 2. The subscript PBG refers to the mass ratio of porcine blood to lime water