公路工程

为明确贵州黔东南地区浅变质板岩作为沥青混凝土集料的潜力，对该地区浅变质板岩集料在沥青混合料中的适用性进行了全面的研究。通过分析浅变质板岩的地质形成条件、化学性质及与SBS改性沥青的黏附性，详细评估了其在沥青路面中的应用潜力。通过对粗集料和细集料的各项性能进行试验和分析，研究证实了这种材料在物理和力学性能方面的优势。研究结果表明：浅变质板岩在多种性能方面展现了良好的物理和力学特性，尤其是在黏附性、抗冻性和细集料粗糙度方面，这些性能指标表明，浅变质板岩集料是一种适用于沥青混合料的优质材料，但在生产应用过程中对针片状颗粒含量进行合理控制十分必要，这也将是制约浅变质板岩集料投入应用的关键问题。研究成果可为该地区浅变质板岩的开发应用提供理论依据及参考。

To clarify the potential of using shallow metamorphic slate from the Southeast Guizhou Region as aggregate in asphalt concrete, a comprehensive study on the applicability of shallow metamorphic slate aggregate in asphalt mixtures was conducted. By analyzing the geological formation conditions, chemical properties and adhesion to SBS-modified asphalt of the shallow metamorphic slate, its application potential in asphalt pavement was evaluated in detail. Through tests and analysisof various performance indicators of coarse and fine aggregates, the advantages of this material in terms of physical and mechanical properties were confirmed. The research results show that: the shallow metamorphic slate exhibits good physical and mechanical characteristics in multiple performance aspects, especially in adhesion, frost resistance and fine aggregate roughness, these performance indicators demonstrate that shallow metamorphic slate aggregate is a high-quality material suitable for asphalt mixtures, but reasonable control of the elongated and flaky particles content during production and application is essential, and this will also be a key issue restricting the application of shallow metamorphic slate aggregate. The research results can provide a theoretical basis and reference for the the development and application of shallow metamorphic slate in the region.