Effect of aggregate type, gradation, and compaction level on thermal properties of hot-mix asphalts
作者： Donath M Mrawira , Joseph Luca
DOI: 10.1139/L06-076
关键词:
摘要: This paper investigates the effects of mix design factors on thermal properties Superpave asphalt concrete. The were measured using a guarded testing device (k-alpha device) developed recently at University New Brunswick. Two aggregate types, three gradations (determined by material retained 4.75 mm sieve), and four compaction levels (at 35, 70, 100, 160 gyrations) investigated. was 12.5 maximum nominal size with PG58-34 binder used for all mixes. findings show that conductivity concrete ranged from 1.7 to 2.1 W/m·K. specific heat capacity varied source 940 2000 J/kg·K. diffusivity found vary source. type have most significant effect properties. level had an but not statistically one. range determined in this is c...
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