Method of calculating the dosage of phase change coarse aggregate, method of manufacturing the same and thermoregulating pavement

A method of calculating a dosage of phase change coarse aggregate, which comprises the steps of setting a regulatory temperature difference of a thermoregulating cement-stabilized layer, the regulatory temperature difference being the difference between the peak temperature of the thermoregulating cement-stabilized layer and the peak temperature of a conventional cement-stabilized layer, wherein the thermoregulating cement-stabilized layer is mixed with a phase change coarse aggregate, while the conventional cement-stabilized layer is not mixed with a phase change coarse aggregate;

• calculating a regulatory heat based on the regulatory temperature difference, wherein when a temperature change of the conventional cement-stabilized layer is the regulatory temperature difference, a heat change of the conventional cement-stabilized layer is the regulatory heat;
• and
• calculating a volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer based on the regulatory heat;
• after calculating a volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer, the method further comprises the step of
• calculating a mixing ratio of the phase change coarse aggregate in the thermoregulating cement-stabilized layer based on the volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer;
• calculating the mixing ratio n of the phase change coarse aggregate in the thermoregulating cement-stabilized layer by using Equation
• n
• =
• V
• 3
• V
• 0
• ′
• +
• V
• 2
• +
• V
• 3
• ,
• where V2 is the volume occupied by the conventional coarse aggregate in the thermoregulating cement-stabilized layer and V2≥0, V0′ is the volume occupied by substances other than the conventional coarse aggregate and the phase change coarse aggregate in the thermoregulating cement-stabilized layer, and V3 is the volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer;
• calculating the regulatory heat by using Equation ΔQ=c0ρ0V0ΔT+c1ρ1V1ΔT where ΔT=T2−T1, ΔT is the regulatory temperature difference, T2 is the peak temperature of the thermoregulating cement-stabilized layer, T1 is the peak temperature of the conventional cement-stabilized layer, ΔQ is the regulatory heat, c0 is the specific heat capacity of substances other than the conventional coarse aggregate in the conventional cement-stabilized layer, ρ0 is the density of substances other than the conventional coarse aggregate in the conventional cement-stabilized layer, V0 is the volume of substances other than the conventional coarse aggregate in the conventional cement-stabilized layer, c is the specific heat capacity of the conventional coarse aggregate in the conventional cement-stabilized layer, ρ1 is the density of the conventional coarse aggregate in the conventional cement-stabilized layer, and V1 is the volume of the conventional coarse aggregate in the conventional cement-stabilized layer;
• calculating the volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer by using Equation
• V
• 3
• =
• Δ
• ⁢
• Q
• Δ
• ⁢
• H
• ·
• ρ
• 3
• ,
• where V3 is the volume occupied by the phase change coarse aggregate in the thermoregulating cement-stabilized layer, ΔH is the latent heat of phase change of the phase change coarse aggregate, and ρ3 is the density of the phase change coarse aggregate.