Effect of flame retardants on long-term aging characteristics of asphalt binders
作者： Shuanfa Chen , Peiliang Cong , Fengshi Zheng , Rui He , Jianfei Liu
DOI: 10.6135/IJPRT.ORG.TW/2014.7(2).109
关键词:
摘要: This work investigates the effects of flame retardants on long-term aging and rheological characteristics modified asphalt binder containing Styrene-Butadiene-Styrene triblock copolymer (SBS) retardants. The included #A (decabromodiphenyl ether, antimony trioxide, zinc borate with ratio 3:1:1 by mass) #B (tetrabromobisphenol A bis (2, 3-dibromopropyl ether), trioxide 2:1 mass). Modified binders were aged according to Pressure Aging Vessel (PAV) Fluorescent Ultraviolet test (UV). Aged unaged characterized using limited oxygen index (LOI), viscosity dynamic shear rheology (DSR), respectively. Experimental results indicated that resistance increases after PAV UV processing, complex modulus also increases. brings a plateau region phase angle master curves over intermediate temperature range. behavior is very weak in studied binder. These changes mainly due ultraviolet crossing linked asphalt. Compared binder, showed better retardancy before aging.
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