Ohm Byungsik, Lee Sang Yum, Le Tri Ho Minh
Department of Highway & Transportation Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-si 10223, Gyeonggi-Do, Republic of Korea.
Faculty of Civil Engineering, Induk University, 12 Choansan-ro, Nowon-gu, Seoul 01878, Republic of Korea.
Polymers (Basel). 2024 Dec 30;17(1):70. doi: 10.3390/polym17010070.
The increasing demand for sustainable construction materials has driven the exploration of alternative fillers in asphalt production. Traditional asphalt mixtures rely heavily on natural aggregates and petroleum-based binders, contributing to environmental degradation. This study proposes an innovative solution by utilizing Crushed Recycled Marble Stone Powder (CRMSP) as a sustainable filler in SBS polymer-modified asphalt containing high volumes of recycled tire rubber, addressing both resource depletion and waste management concerns. A total of 10 asphalt mixes were formulated with varying CRMSP content (0-100% as a replacement for conventional filler) and SBS polymer (3-5%), and their performance was evaluated through Marshall stability, flow, volumetric properties, and dynamic modulus tests. The results demonstrate that incorporating CRMSP up to 75% significantly enhances asphalt's mechanical properties. The 75% CRMSP mix showed superior stability (19.2 kN, 24.1% improvement), flow (4.6 mm, 4.5% improvement), and resistance to rutting (lowest rut depth: 0.18 mm, 16.7% reduction) compared to the control mixture. Dynamic modulus testing further confirmed the improved resistance to deformation, with the 75% CRMSP mix exhibiting the highest modulus (6.9 GPa, 15.0% improvement). This research highlights the potential of CRMSP as an innovative and eco-friendly alternative filler, improving asphalt performance while reducing environmental impact. By offering a sustainable way to recycle marble waste and tire rubber, this study paves the way for greener, cost-effective asphalt formulations. Future studies should focus on real-world applications, durability, and long-term performance to validate the potential of CRMSP-modified asphalt in commercial use.
对可持续建筑材料日益增长的需求推动了沥青生产中替代填料的探索。传统沥青混合料严重依赖天然集料和石油基粘结剂，这对环境造成了破坏。本研究提出了一种创新解决方案，即利用碎再生大理石石粉（CRMSP）作为含大量再生轮胎橡胶的SBS聚合物改性沥青中的可持续填料，以解决资源枯竭和废物管理问题。共配制了10种沥青混合料，其CRMSP含量（替代传统填料的比例为0 - 100%）和SBS聚合物含量（3 - 5%）各不相同，并通过马歇尔稳定度、流值、体积性质和动态模量试验对其性能进行了评估。结果表明，掺入高达75%的CRMSP可显著提高沥青的力学性能。与对照混合料相比，含75% CRMSP的混合料表现出更高的稳定性（19.2 kN，提高24.1%）、流值（4.6 mm，提高4.5%）和抗车辙性能（最低车辙深度：0.18 mm，降低16.7%）。动态模量试验进一步证实了其抗变形能力的提高，含75% CRMSP的混合料表现出最高的模量（6.9 GPa，提高15.0%）。本研究突出了CRMSP作为一种创新且环保的替代填料的潜力，在改善沥青性能的同时减少了环境影响。通过提供一种回收大理石废料和轮胎橡胶的可持续方式，本研究为更环保、更具成本效益的沥青配方铺平了道路。未来的研究应聚焦于实际应用、耐久性和长期性能，以验证CRMSP改性沥青在商业应用中的潜力。
