ABSTRACT:

The indirect tensile strength (ITS) of portland cement concrete (PCC) is commonly predicted using several existing empirical equations that relate this property to the compressive strength. Based on the compressible packing model (CPM), a new approach for predicting ITS of PCC was developed. The proposed approach is based on knowing the ITS of the cementitious paste and other parameters related to aggregate properties. Compared to existing models, the proposed approach showed the best predictability as the root mean square error between its predictions and experimental values for a wide range of concretes, having different sources of aggregates, types of cement and water to cement ratio, did not exceed 0.2 MPa.

摘要：

通常使用几种现有的将这种性能与抗压强度相关联的经验方程式来预测硅酸盐水泥混凝土（PCC）的间接抗拉强度（ITS）。基于可压缩包装模型（CPM），开发了一种预测PCC ITS的新方法。所提出的方法是基于了解水泥浆的ITS和与集料性能相关的其他参数。与现有模型相比，所建议的方法具有最佳的可预测性，因为其对各种混凝土的骨料，水泥类型和水灰比的预测值与实验值之间的均方根误差不超过0.2 MPa。