基于欧氏距离法分析再生集料的性能差异

Property Differences of Recycled Concrete Aggregates With the Euclidian Distance

为量化建筑再生集料和道路再生集料的性能差异,以建筑再生集料和道路再生集料的表观密度、吸水率、针片状质量分数、压碎值等性能试验数据为基础,使用可表示两变量整体差异的欧氏距离对建筑再生集料和道路再生集料的各项基本性能以及二者总体性能进行差异分析.结果表明,建筑再生集料的各单项性能及总体性能欧氏距离的标准方差均大于道路再生集料;与建筑再生集料相比,道路再生集料的基本性能更接近天然集料,并且其总体性能更加稳定,更有利于在工程中重复利用或用于有较高要求的工程结构.

To quantize the property differences between construction recycled concrete aggregates （RCA） and pavement RCA, the quantitative analysis with Euclidian distance indicating the diversity of two sequences was carried on, based on the data of property trials that include apparent density, water absorption, crushing index value, etc. The Euclidian distance of single properties and variance of entire property for construction RCA were all greater than that of pavement RCA. Therefore, pavement RCA comes closer to the natural aggregates than construction RCA. Additionally, the entire property of pavement RCA is more stable than construction RCA. As a result, pavement RCA favors the application in project of higher requirements.