Pervious concrete pavement (PCP) is a porous paving material that facilitates the rapid infiltration of runoff. The significance of temperature difference (ΔT) between the top and bottom of traditional concrete pavements for stresses and structural design is well known. However, with their low thermal conductivity, the question exists whether PCPs develop large ΔTs that vary during the day and between seasons. If so, the extent of the effect of such ΔTs on stresses in the slab and the thickness design of PCP needs to be investigated. In this study, temperature data collected from three PCP sections (in two different climate regions) instrumented with thermocouples were used to analyze ΔT for multi-year periods. Frequency distribution of ΔTs showed bimodal trends with peaks ranging between –6°C and 17°C occurring during the day and night of spring and summer seasons. In winter, ΔT distribution was unimodal, with peaks ranging from 0°C to 3°C. Finite element analysis was conducted to quantify the stresses in PCP sections with different flexural strength (MR) and modulus of subgrade reaction under combinations of critical ΔTs and axle loading. The resulted stresses were used in a PCP fatigue model to estimate fatigue life and slab thickness for PCPs. Based on the expected load repetitions in a 20-year design life, a database of recommended thicknesses for PCPs with various material properties and under four traffic categories was developed. Increasing MR from 2.4 to 3.1 MPa resulted in reducing PCP design thicknesses by 20–55 mm under the same loads. Moreover, incorporating ΔT in the thickness design of PCP resulted in a higher minimum required thicknesses by up to 100 mm compared with PCP with no ΔT under the same traffic loads.

透水混凝土路面（PCP）是一种多孔铺路材料，可促进径流的快速渗透。众所周知，传统混凝土路面的顶部和底部之间的温差（ΔT）对于应力和结构设计的重要性。但是，由于其导热系数低，因此存在一个问题，即五氯苯酚是否会产生较大的ΔT，而ΔT在白天和季节之间会有所不同。如果是这样，则需要研究这种ΔTs对板中应力的影响程度以及PCP的厚度设计。在这项研究中，从热电偶仪器的三个PCP区域（在两个不同的气候区域）收集的温度数据用于分析多年期的ΔT。ΔTs的频率分布呈双峰趋势，在春季和夏季的白天和晚上出现的峰值介于–6°C和17°C之间。在冬季，ΔT分布为单峰，峰值范围为0°C至3°C。进行了有限元分析以量化具有不同抗弯强度的PCP截面中的应力（临界ΔTs和轴载荷的组合下的MR）和路基反应模量。将所得应力用于PCP疲劳模型中，以估算PCP的疲劳寿命和板坯厚度。根据20年设计寿命中的预期载荷重复次数，开发了具有多种材料特性且在四种交通类别下的PCP推荐厚度的数据库。增加MR从2.4到3.1兆帕导致相同的荷载作用下由20-55毫米减少PCP设计厚度。此外，与在相同交通负荷下没有ΔT的PCP相比，在PCP的厚度设计中纳入ΔT导致的最小所需厚度更高，高达100 mm。