In this study, calcium-rich wood biomass combustion ash (CRBA) was added as a mineral filler into an eco-friendly hot mix asphalt (HMA). Marshall mix design was used with four different CRBA contents (0%, 3.0%, 3.5%, and 4.5% (w/v %)). Pavement performance was assessed by evaluating the tensile strength, resilient modulus, fatigue strength, and performance in Lottman test. An optimum binder content of 5.5% was achieved for all modified CRBA−HMAs and the reference HMA. The CRBA filler (3.5% and 4.0%) can be used as a mineral filler to improve the Marshall stability up to 27%, compared to that of the pure mixture, and increase the fatigue response of HMA pavements by approximately three times with no harmful effects on the other evaluated properties. Additionally, the CRBA residue does not require crushing and sieving through a 0.075 mm sieve for application to a pavement field.

在这项研究中，将富含钙的木材生物质燃烧灰 (CRBA) 作为矿物填料添加到环保热拌沥青 (HMA) 中。Marshall 混合设计用于四种不同的 CRBA 含量（0%、3.0%、3.5% 和 4.5% (w/v %)）。通过在 Lottman 试验中评估拉伸强度、弹性模量、疲劳强度和性能来评估路面性能。所有改性 CRBA-HMA 和参考 HMA 的最佳粘合剂含量为 5.5%。CRBA填料（3.5%和4.0%）可用作矿物填料，与纯混合物相比，马歇尔稳定性提高达27%，使HMA路面的疲劳响应提高约3倍，且无害对其他评估属性的影响。此外，CRBA 残留物不需要粉碎和过 0 筛分。