Concrete made by post-filling coarse aggregate process could reduce the cement content greatly compared with traditional concrete placement method. Thus, it not only lowers the production cost of concrete through lower usage of cement but also reduces the CO₂ emissions to the environment. In this paper, the compressive and tensile strength of post-filling coarse aggregate concrete with different post-filling ratios (PFRs) (0%, 10%, 15%, 20%, 25%, 30%) and concrete strength grades (C30, C40, C50) were first studied. Then the flexural performance of nineteen concrete beams with different concrete strength, post-filling ratios, reinforcement ratios was investigated. The experimental results showed that the compressive strength and elastic modulus of the post-filling coarse aggregate concrete increased with the increase of the post-filling ratio of coarse aggregate, reaching the peak value at the filling ratio of 20%. It indicated that there was no obvious difference in the failure mode as well as middle-span deflections between post-filling coarse aggregate concrete (PFCC) beams and ordinary concrete (OC) beams. Ductile failure was observed for all nineteen specimens. Results demonstrated that the cracking load, yield load, and ultimate load of the post-filling coarse aggregate concrete beams all reached the peak value at the post-filling ratio of 20%. In addition, the theoretical predictions of cracking loads and ultimate load carrying capacities matched the experimental results in satisfactory agreement.

与传统的混凝土浇筑方法相比，通过后填充粗骨料工艺制成的混凝土可以大大降低水泥含量。因此，它不仅通过减少水泥用量来降低混凝土的生产成本，而且还减少了CO _2。排放到环境中。本文研究了不同后填充率（PFR）（0％，10％，15％，20％，25％，30％）和混凝土强度等级（C30）的后填充粗骨料混凝土的抗压强度和抗拉强度，C40，C50）进行了首次研究。然后研究了十九种不同混凝土强度，后填充率，配筋率的混凝土梁的抗弯性能。试验结果表明，后填充粗骨料混凝土的抗压强度和弹性模量随粗骨料后填充比的增加而增加，在填充比为20％时达到峰值。结果表明，后填充粗骨料混凝土（PFCC）梁与普通混凝土（OC）梁的破坏模式以及中跨挠度没有明显差异。所有十九个标本均观察到延性破坏。结果表明，后填充粗骨料混凝土梁的开裂荷载，屈服荷载和极限荷载均以20％的后填充率达到峰值。此外，开裂载荷和极限载荷承载力的理论预测与实验结果吻合得令人满意。