To investigate the relationships between the different mechanical strengths of internally cured concrete with Super Absorbent Polymer (SAP concrete), the uniaxial mechanical properties of SAP concrete with different internal curing water-cement ratios were studied. Various SAP concrete specimens were prepared, and the uniaxial compressive, splitting tensile, as well as four-point bending tests, were carried out using the electro-hydraulic servo testing machine. The cubic compressive strength, splitting tensile strength, and flexural strength of SAP concrete with different internal curing water-cement ratios was obtained. The converting relationships between the internal curing water-cement ratio and different mechanical strengths were analyzed extensively. Based on the conversion formulas of different strength indexes proposed by different national standards and other researchers, the equations among the splitting tensile strength, cubic compressive strength, and flexural strength of SAP concrete were proposed and verified using the experimental data. According to the comparative analysis results, the proposed equations in this study have significant applicability and can be conducted in the practical application of SAP concrete.

为了研究内部固化混凝土与高吸收性聚合物（SAP混凝土）的不同机械强度之间的关系，研究了具有不同内部固化水灰比的SAP混凝土的单轴力学性能。准备了各种SAP混凝土试样，并使用电动液压伺服试验机进行了单轴压缩，劈裂拉伸以及四点弯曲试验。得到了不同内部固化水灰比的SAP混凝土的立方抗压强度，劈裂抗拉强度和抗弯强度。广泛分析了内部固化水灰比与不同机械强度之间的转换关系。根据不同国家标准和其他研究人员提出的不同强度指标的换算公式，提出了SAP混凝土的劈裂抗拉强度，立方抗压强度和抗弯强度之间的关系式，并通过实验数据进行了验证。根据比较分析结果，本研究提出的方程具有明显的适用性，可以在SAP混凝土的实际应用中进行。