运用压力试验机、压汞测孔法以及扫描电镜观测等实验手段,对负温高性能混凝土强度与孔隙特征的关系进行试验研究,研究结果表明:负温高性能混凝土强度受孔结构影响显著,呈现抗压强度增大孔隙率减小趋势关系。同时,抗压强度还受孔的级配、孔的形貌及孔的空间排列的影响。 The relationship between strength and pore characteristics of negative temperature high performance concrete was studied by means of pressure testing machine, mercury intrusion porosimetry and scanning electron microscope observation. The results show that the strength of negative temperature high performance concrete is significantly affected by pore structure, The results show that the compressive strength increases and the porosity decreases. At the same time, the compressive strength is also affected by the grading of the pores, the morphology of the pores and the spatial arrangement of the pores.