Abstract：To prepare self-compacting high-strength concrete, the influence of coarse aggregate gradation ratio of (5~10 mm) and (10~20 mm) crushed stone mass ratio on the J-ring performance of self-compacting concrete was studied. The results indicate that increasing the proportion of large stones within a certain range is beneficial for increasing the concrete flow rate and reducing the expansion time. When the mass ratio of crushed stones is 6:4, the J ring has the smallest barrier extended time. Increasing the proportion of large stones within a certain range is beneficial for increasing the extended degree. When the mass ratio of crushed stones is 6:4, the J-ring blocks the maximum extended degree, but the concrete produces some separation. Increasing the number of large stones within a certain range is beneficial for the self-forming of concrete, but when the number of large stones exceeds a certain limit, it is detrimental to the self-forming of concrete. The suitable ratio of coarse aggregate in this experiment is 8:2.
许 影, 朱培林, 郎剑雷. 骨料级配对自密实高强混凝土J环性能影响研究[J]. 水泥杂志, 2025, 0(04): 62-.
XU Ying, et al.. Study on influence of aggregate grade on J-ring performance of of self-compacting high-strength concrete. Journal of Cement, 2025, 0(04): 62-.
2025, Vol. 0 
