Roller-compacted concrete (RCC) comprises the same raw materials used in conventional concrete, but with different proportions. It is dry and has a low paste volume. Large volumes of fly ash are commonly used in the construction of roller-compacted concrete dams (RCCD) and pavements (RCCP). However, it is not as abundant as limestone powder. The latter is also cheaper and environment-friendly. This study aims to investigate the optimal amount of limestone powder that can be used in RCC to reduce both cement and fly ash. The effects of limestone powder and fly ash on the water absorption, compressive strength, and freeze-thaw resistance of RCC were evaluated. Eight different combinations of the mineral admixtures were tested, with limestone powder and fly ash contents up to 35% and 30%, respectively. A decline in density was observed when the cement replacement level was greater than 30%. This also led to an increase in porosity and permeability. Two mix designs denoted as LS30 and LS30FA10, demonstrated satisfactory results after 100 freeze-thaw cycles with relative dynamic modulus of elasticity (RDME) values of 73% and 70%, respectively. Their corresponding mass loss was 3.05% and 3.72%, which were below the code specified limit (5%).

碾压混凝土 (RCC) 包含与传统混凝土相同的原材料，但比例不同。它是干燥的并且具有低的糊体积。大量粉煤灰通常用于建造碾压混凝土坝 (RCCD) 和路面 (RCCP)。然而，它不如石灰石粉丰富。后者也更便宜且环保。本研究旨在调查可用于 RCC 以减少水泥和粉煤灰的石灰石粉的最佳用量。评价了石灰石粉和粉煤灰对碾压混凝土的吸水率、抗压强度和抗冻融性的影响。对矿物掺合料的八种不同组合进行了测试，石灰石粉和粉煤灰的含量分别高达 35% 和 30%。当水泥替代水平大于 30% 时，观察到密度下降。这也导致孔隙率和渗透率的增加。表示为 LS30 和 LS30FA10 的两种混合设计在 100 次冻融循环后表现出令人满意的结果，相对动态弹性模量 (RDME) 值分别为 73% 和 70%。它们相应的质量损失分别为 3.05% 和 3.72%，低于规范规定的限值 (5%)。