Numerical Analysis of the Energy Improvement of Plastering Mortars with Phase Change Materials

Table 3

Results of the test performed to the composite mortar with formulation L (PCMM) and comparison to reference mortars (REFM).

Test parameter	Results		Classification of PCMM/comments
	PCMM (LW)	REFM (GP)
Dry bulk density [kg/m^3]	1170	1400	LW/declared range of values: 𝜌≤1300 kg/m^3.
Compressive strength [N/mm^2]	2.40	2.25	CS I/similar behaviour.
Adhesion [N/mm^2] and fracture pattern FP (A, B, or C)	0.35 FP: B	0.30 FP: B	Similar behaviour.
Capillary water absorption (intended use in external elements)	4.89	≤4.0	W0/similar behaviour.
Water vapour permeability coefficient (𝜇) (intended use in external elements)	5–10	<15	EN 1745 [6], Table A.12.
Thermal conductivity [W/(m·°C)]	0.29	0.61	Similar behaviour when compared to LW mortars.
Latent heat [kJ/kg]	≈25	—	—
Melting temperature [°C]	≈23	—	—
Melting temperature range [°C] (90%)	23–25	—	—
Specific heat (solid) [kJ/(kg·°C)]	1.0	1.0	EN 1745 [6], Table A.12.