基于缓解城市热岛效应的自冷式混凝土路面砖性能研究

发布时间：2018-01-14 18:43

本文关键词：基于缓解城市热岛效应的自冷式混凝土路面砖性能研究　出处：《中外公路》2017年01期 　论文类型：期刊论文

【摘要】：近年来,海绵城市的概念逐步受到重视,其中遵循生态优先原则,合理利用雨水资源缓解热岛效应已经成为城市基础设施设计者尤为关注的方向。现有研究表明:全球气温上升给人们安全和健康带来的挑战日趋严重。而混凝土由于具有较高的热储存能力及较低的热传导能力,已成为城市热岛效应的主要来源之一。此外土壤封闭层的大量使用也可导致城市内部区域温度上升。为了缓解这种所谓的城市热岛效应,自冷式混凝土路面应运而生。这种路面不仅能够储存水分,还能利用水在蒸发过程中的吸热作用提供冷却效果。该文主要评价这种新型路面降低路表及周围温度的能力,利用一系列的室内试验检测新型路面的自冷性能。为了验证其实的应用效果,在西班牙设置两块试验场地(12m×8m)铺筑自冷式路面和对照路面,进而研究了空气温度和自冷式路面表面降低温度之间的关系。
[Abstract]:In recent years, the concept of sponge city has been paid more and more attention, following the principle of ecological priority. Rational use of Rain Water resources to mitigate the heat island effect has become a particular concern for urban infrastructure designers. Existing studies show that:. Global warming poses increasing challenges to people's safety and health, while concrete has higher thermal storage capacity and lower thermal conductivity. It has become one of the main sources of the urban heat island effect. In addition, the extensive use of the soil closed layer can also lead to the rise of temperature in the urban area. In order to mitigate this so-called urban heat island effect. Self-cooled concrete pavement emerges as the times require. This kind of pavement not only can store moisture. The cooling effect can also be provided by the heat absorption of water in the evaporation process. This paper mainly evaluates the ability of the new road surface to reduce the surface temperature and the surrounding temperature. A series of indoor tests are used to test the self-cooling performance of the new road surface. In order to verify the actual application effect, two test sites (12m 脳 8m) have been set up in Spain to build the self-cooled pavement and the control pavement. Furthermore, the relationship between air temperature and surface temperature reduction of self-cooled pavement is studied.
【作者单位】：安徽省交通规划设计研究总院股份有限公司;苏交科集团股份有限公司;东南大学;
【分类号】：U416.216
【正文快照】： 作为城市中最常用的建筑材料,混凝土与城市热岛效应密切相关——其较强的蓄热能力使得路面白天吸收的热量在夜间仍然存在并且可以继续提升气温。为了缓解这种效应,自冷式混凝土路面应运而生。设计者通常采用两种类型的自冷式路面:高反射率的混凝土路面(太阳反射率)和透水性混

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