A kind of asphalt pavement with heat transfer directionality and its heat conduction effect test method

Abstract

The invention discloses a bituminous pavement with heat transferring directionality and a heat conduction effect testing method thereof. The bituminous pavement comprises three layers, the specific heat capacities of the structural layers from top to bottom are gradually increased, the upper surface layer of the pavement is made of a common bituminous mixture, the middle surface layer is made of abituminous mixture with phase change particles being added, and the lower surface layer is made of a polyurethane mixture. According to the bituminous pavement, transferring of heat in the pavement from top to bottom is achieved through the gradient of the specific heat capacities of the materials used by the structural layers of the pavement, decreasing of the pavement temperature is facilitated, and permanent deformation of rutting and the like caused by the pavement high temperature is relieved; according to a heat conduction effect testing method, the intensity of solar radiation irradiated to the pavement surface, the intensity of radiation which is reflected out from the pavement surface, the pavement internal temperature, the near-pavement temperature and the like can be measured and analyzed synchronously; and a combined specimen forming mould, a heat-preservation clamp and a testing method of a heat conduction effect have the advantages that manufacturing is convenient, and operation is simple and convenient, the heat conduction effects of the pavement mixtures can be evaluated comprehensively.

Description

technical field [0001] The invention belongs to the technical field of engineering, and relates to a functional asphalt pavement, in particular to an asphalt pavement with heat transfer directionality and a heat conduction effect testing method thereof. Background technique [0002] With the continuous expansion of urban scale and the rapid development of infrastructure construction, urban heat conduction effect has become an important factor that endangers human health and affects people's normal life and work. It is generally believed that the high density of urban high-rise buildings, slow air circulation, high heat emission, and wide paved roads are the main reasons for the urban heat conduction effect. Among them, cement pavement and asphalt pavement paved in cities are considered to be the primary reasons for urban heat conduction. On the one hand, artificially paved roads are impermeable, resulting in low water content on the urban surface, and it is difficult to redu...

AI Technical Summary

Problems solved by technology

The core content of the heat conduction effect: the intensity of solar radiation irradiated on the road surface, the intensity of radiation reflected from the road surface, the internal temperature of the road surface, and the temperature near the road surface, etc., have not been simultaneously tested and analyzed by appropriate methods.

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