【摘要】 探讨了超级空气计（SAM）指标在评价混凝土抗冻性能中的应用。混凝土的抗冻性能对于其在寒冷地区的应用至关重要，而传统的评价方法存在试验周期长、操作复杂等问题。超级空气计作为一种新型测试设备，能够快速、准确地预测混凝土硬化后的抗冻性能。通过系统的试验研究，分析了SAM指标与混凝土抗冻性能之间的关系。研究发现，新拌混凝土的含气量与SAM值之间存在负相关性，即含气量增加时，SAM值降低。此外，SAM值还能有效反映气泡的尺寸和稳定性。通过对比硬化混凝土的含气量与气泡间距系数，以及SAM值与气泡间距系数的相关性，为混凝土抗冻性能的快速评估提供了科学依据。研究结果对于指导寒冷地区混凝土结构的设计和施工具有重要意义。更多还原

【Abstract】 This study explores the application of the super air meter(SAM)index in evaluating the frost resistance of concrete.The frost resistance of concrete is crucial for its application in cold regions,and traditional evaluation methods suffer from long test cycles and complex operations.The super air meter,as a novel testing device,can quickly and accurately predict the frost resistance of hardened concrete.Through systematic experimental research,this study analyzes the relationship between the SAM index and the frost resistance of concrete.The findings reveal a negative correlation between the air content of fresh concrete and the SAM value,indicating that as the air content increases,the SAM value decreases.Moreover,the SAM value effectively reflects the size and stability of air bubbles.By comparing the air content and bubble spacing factor of hardened concrete,as well as the correlation between the SAM value and the bubble spacing factor,this study provides a scientific basis for the rapid assessment of concrete frost resistance.The results are of significant importance for guiding the design and construction of concrete structures in cold regions.更多还原