骨料种类与品质对透水混凝土性能影响的研究进展

Effects of Aggregate Species and Quality on the Properties of Pervious Concrete:a Review

骨料作为支撑透水材料空间骨架结构的原料,其形状、粒径范围及分布、种类与品质都对材料强度、透水性及耐久性产生重要的影响。文章从透水混凝土的骨料种类与品质要求为切入点,介绍了应用于透水混凝土中的天然骨料,建筑垃圾、工业固废、人造骨料及生活垃圾底渣等再生骨料与砂基细骨料的基本物理化学特性,重点综述了各类骨料对透水混凝土强度、透水性、耐久性及水质净化等性能影响的研究进展,并进行了简要分析与总结。最后,提出了透水混凝土可以通过对骨料的质量控制来提升其透水时效性与耐久性,指出未来需扩大透水混凝土行业协同处置废弃物的范围与能力。

Aggregate is a raw material of pervious material, which is used to support the spatial skeleton structure of pervious material. The shape, particle size range and distribution, type and quality have an important impact on strength, water permeability and durability of the material. In view of aggregate type and quality requirements of the pervious concrete, the basic physicochemical properties of aggregates including natural aggregate, construction waste, industrial Solid waste, artificial aggregate, heat treatment bottom slag of municipal solid waste and sand-based fine aggregate, which are used in pervious concretes are introduced. The influence of those aggregate on strength, permeability, durability and water purification of pervious concretes are summarized emphatically. Finally, it is proposed that the pervious concrete can enhance the water-permeable aging and durability through the quality control of aggregate, and the scope and capacity of co-disposal of wastes should be expanded through the pervious concrete industry in the future.