为提高碾压混凝土抗裂性能,节约水泥用量,胶凝材料中通常会用粉煤灰替代部分水泥用量,但是粉煤灰会对碾压混凝土工作性和早期强度有较大影响。为此本文通过采用改进的振动液化性能评价试验和抗弯拉试验,分析粉煤灰掺量对碾压混凝土拌和物工作性和早期强度影响,研究结果表明掺入适量的粉煤灰能有效的改善碾压混凝土可碾性和易密实性,但随着粉煤灰掺量增加,会降低早期强度,推荐粉煤灰掺量不应大于20%。 In order to improve the anti-cracking performance of RCC and save the amount of cement, fly ash is usually used instead of part of the cement content, but fly ash will have a greater impact on the workability and early strength of RCC. In this paper, through the use of improved vibration liquefaction performance evaluation test and flexural resistance test, the influence of fly ash content on the workability and early strength of roller compacted concrete mixture is analyzed. The results show that adding appropriate amount of fly ash can effectively Rolling and compactness of roller compacted concrete can be improved. However, with the increase of fly ash content, the early strength will be reduced. The recommended fly ash content should not exceed 20%.