The transformation in axle loads of vehicles along with environmental factors requires stiff base layer for concrete pavement and one such stiff layer is dry lean concrete (DLC). The DLC would have variable stiffness as a result of the construction practices. The present study focuses on understanding the influence of DLC stiffness on the tensile stresses in plain cement concrete (PCC) slab using Finite Element (FE) analysis. The PCC slabs are analyzed considering various cases: bonded and un-bonded base with positive and negative temperature differentials. From FE analysis, it is observed that an improved DLC base stiffness has a more pronounced effect on stresses to recede in the PCC slab of bonded concrete pavement with a positive temperature differential. The influence of DLC stiffness was less in the bonded concrete pavement with a negative temperature differential, while marginal in un-bonded concrete pavement with positive and negative temperature differentials.

车辆轴载的转变以及环境因素需要用于混凝土路面的刚性基层，其中一种刚性层是干贫混凝土 (DLC)。由于施工实践，DLC 将具有可变刚度。本研究的重点是使用有限元 (FE) 分析了解 DLC 刚度对普通水泥混凝土 (PCC) 板的拉应力的影响。PCC 板的分析考虑了各种情况：具有正负温差的粘合和非粘合基底。从有限元分析中可以看出，提高的 DLC 基础刚度对具有正温差的粘结混凝土路面的 PCC 板中的应力后退具有更显着的影响。