The shallow spread foundations are one of the widely used foundation types for low-rise, low-cost or commercial buildings. However, it is not possible to use this type of foundation for soils with low bearing capacity or capable of excessive settlements. In these cases, stabilized soil layers overlying insufficient soil may be alternative to the high-cost foundation systems. As the temperature of the soils depends mostly on air temperature for shallow depths, curing conditions of the stabilized soil layers are affected by the air temperature. The effect of curing temperature on the pressure-settlement relation of the layered soil is a gap in the literature. This study investigates the effect of Bayburt tuff on pressure-settlement characteristics of layered soil for various curing temperatures. The specific objectives of this paper are to (1) examine the effect of using the waste tuffs as a stabilization agent in layered soils, (2) evaluate the usability of response surface methodology (RSM) to estimate shear strength parameters (c, ϕ), unconfined compression strength, and secant modulus of the stabilized soil with less experiment, (3) investigate the effect of dimensions of the stabilized soil block (length, with and thickness) on pressure-settlement relations under various curing temperature (T = 3 °C, 13 °C, 23 °C, 33 °C, 43 °C). This study comprises experimental and numerical parts. In the experimental part, strength parameters (c, ϕ) and secant modulus of stabilized soil samples were estimated with response surface methodology for various curing temperatures (3 °C, 23 °C, 43 °C). The effects of curing temperature on shear strength and Bulk’s modulus parameters were determined with the derived RSM model. In the numerical part of the study plate load test was simulated with the derived 2D axisymmetric FE model. The parameters required for the FE analyses were determined with the derived RSM model. As a result of the study, it was seen that it is possible to estimate experimental parameters accurately using the RSM approach with fewer tests. Bayburt tuff and lime mixtures increase the stiffness of the layered soil. The curing temperature has considerable effects on the pressure-settlement relationship up to a certain value. After a certain value increasing curing temperature has no considerable effects on the stiffness of the layered soil.

浅层基础是低层、低成本或商业建筑广泛使用的基础类型之一。但是，对于承载力低或能够过度沉降的土壤，不能使用这种类型的地基。在这些情况下，覆盖不足土壤的稳定土层可以替代高成本的地基系统。由于浅层土壤的温度主要取决于气温，稳定土层的固化条件受气温的影响。养护温度对层状土压力-沉降关系的影响是文献中的空白。本研究调查了 Bayburt 凝灰岩在不同养护温度下对层状土壤压力沉降特性的影响。c , ϕ )、稳定土的无侧限抗压强度和割线模量，实验较少， (3) 研究了稳定土块尺寸（长度、宽度和厚度）在不同养护温度下对压力沉降关系的影响（T  = 3 °C、13 °C、23 °C、33 °C、43 °C）。本研究包括实验部分和数值部分。在实验部分，强度参数（c , ϕ) 和稳定土壤样品的割线模量是用响应面方法估计的，适用于各种固化温度 (3 °C、23 °C、43 °C)。固化温度对剪切强度和体积模量参数的影响由衍生的 RSM 模型确定。在研究板载荷试验的数值部分，使用导出的 2D 轴对称有限元模型进行模拟。有限元分析所需的参数由衍生的 RSM 模型确定。研究结果表明，可以使用 RSM 方法以较少的测试准确估计实验参数。Bayburt凝灰岩和石灰混合物增加了分层土壤的刚度。固化温度对压力-沉降关系有相当大的影响，达到一定值。