US 12,252,851 B1
Method of calculating the dosage of phase change coarse aggregate, method of manufacturing the same and thermoregulating pavement
Binhua Hu, Shaanxi (CN); Long Jin, Shaanxi (CN); Yuanhong Dong, Shaanxi (CN); Zijun Li, Shaanxi (CN); Jianbing Chen, Shaanxi (CN); Yan Mu, Shaanxi (CN); Hui Peng, Shaanxi (CN); Yao Wei, Shaanxi (CN); Wansheng Pei, Shaanxi (CN); and Tian Sun, Shaanxi (CN)
Assigned to CCCC FIRST HIGHWAY CONSULTANTS CO., LTD., Shaanxi Province (CN)
Filed by CCCC FIRST HIGHWAY CONSULTANTS CO., LTD., Shaanxi (CN)
Filed on Nov. 20, 2024, as Appl. No. 18/954,491.
Claims priority of application No. 202410376185.X (CN), filed on Mar. 29, 2024.
Int. Cl. E01C 7/14 (2006.01); B28C 7/02 (2006.01); E01C 7/32 (2006.01)
CPC E01C 7/142 (2013.01) [B28C 7/02 (2013.01); E01C 7/32 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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

OG Complex Work Unit Math
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

OG Complex Work Unit Math
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.