东南大学学报（英文版）2018，Vol.34Issue(1)：87-94,8.DOI:10.3969/j.issn.1003-7985.2018.01.013
粗集料针片状对多孔沥青混合料性能的影响
Effects of flat and elongated aggregates on the performance of porous asphalt mixture
摘要
Abstract
Four flat and elongated (F&E) contents (0%, original, 30%, and 40%) were investigated to evaluate the effects of F&E particles on the performance of porous asphalt mixture ( PA). Laboratory tests including volumetric determination, two-dimensional image analysis, Cantabro loss tests, breakdown tests, and permeability tests were conducted to evaluate the volumetric properties, the state of stone-on-stone contact, durability, skeleton stability and permeability of PA, respectively. The test results indicate that the F&E content was a significant factor for total air voids, aggregate skeleton break down, and permeability. The functionality, rutting resistance, long-term durability, and skeleton stability decrease with the increase of F&E content since F&E aggregates in porous asphalt mixtures have a tendency to breakdown. Compared with traditional dense graded mixtures, PA is more sensitive to the F&E content due to an open graded aggregate structure. Therefore, the stricter requirement for F&E content should be met for porous asphalt mixtures than the one for traditional dense graded mixture.关键词
多孔沥青混合料/针片状/骨架稳定性/耐久性/渗透性Key words
porous asphalt mixture/flat and elongated aggregate/skeleton stability/durability/permeability分类
交通工程引用本文复制引用
王晓威,顾兴宇,董侨,吴江涛..粗集料针片状对多孔沥青混合料性能的影响[J].东南大学学报（英文版）,2018,34(1):87-94,8.基金项目
Transportation Science and Technology Project of Jiangsu Province(No.7621000115),Science and Technology Project of Nanjing Committee of Housing and Urban-Rural Development(No.ks1611). （No.7621000115）
