Mechanical properties of white clay used as wall painting substrate material: measurement of strength and modulus of elasticity of simulated substrate material of wall paintings Hiten at Kondo, the main hall at Horyu-ji Temple

Heritage Science

Table 2 Quantities of materials in simulated white clay

Sample species	Amakusa pottery clay (g)	Paper fiber (g)	Rice glue (g) containing 10% rice flour	Water (g)
P0R05	100	0	5	27.5
P0R1	100	0	10	23
P0R2	100	0	20	14
P1R05	100	1	5	31.5
P1R1	100	1	10	27
P1R2	100	1	20	18
P3R05	100	3	5	39.5
P3R1	100	3	10	35
P3R2	100	3	20	26

The names for the sample species use the letters "P" and "R" to represent paper fiber and rice flour, respectively. The numerical values indicate the corresponding mixing ratios. For instance, P1R05 means a mixture of 1% paper fiber and 0.5% rice flour relative to the mass of clay. The use of a single "P" or "R" refers to all three patterns of material mixing ratios that include paper fiber or rice flour in the following test. For example, P1 refers to the mixing ratios P1R05, P1R1, and P1R2