influence of chemical additives and wax modifiers on odor emissions of road asphalt
電子鼻技術(shù)用于化學(xué)添加劑和蠟改性劑對(duì)道路瀝青氣味排放影響研究
federico auitano ↑, felice giuliani
university of parma, dipartimento di ingegneria e architettura, parco area delle scienze, 181/a –parma, italy
abstract
the use of a broad range of asphalt additives is a well-established practice in road pavement engineering for the production of high-performance hot-mix and warm-mix asphalt mixtures. the study aimed to verify and to assess, though an analytical-sensory approach based on artificial olfactory system (aos), the effects of five different asphalt additives (chemical additives, odor suppressant agent and wax modifiers) on the odorous patterns of asphalt emissions at typical mixing and laying temperatures. the aos has made possible to identify a specific odor fingerprint of each additive. however, once added to asphalt, these agents did not establish with binder effects of synergy, additivity or antagonism, but appear to be as neutral elements by an odorous point of view. the odorous patterns of emissions generated by heating neat asphalt at various temperatures in laboratory scale tend to coincide with those of asphalt/additive mixtures, underlining how the bituminous binder odor resulted to be hiding or masking compared to that of only-additives.
在道路路面工程中，廣泛使用瀝青添加劑是生產(chǎn)高性能熱拌瀝青混合料和溫拌瀝青混合料的一種成熟做法。本研究旨在通過(guò)基于人工嗅覺(jué)系統(tǒng)(aos)的分析感法，驗(yàn)證和評(píng)估五種不同瀝青添加劑(化學(xué)添加劑、抑臭劑和蠟改性劑)對(duì)典型混合和鋪設(shè)溫度下瀝青散發(fā)氣味模式的影響。aos可以識(shí)別每種添加劑的特定氣味指紋。然而，一旦添加到瀝青中，這些藥劑并沒(méi)有形成協(xié)同作用、加成作用或拮抗作用的結(jié)合效應(yīng)，而是從氣味的角度看，它們似乎是中性元素。在實(shí)驗(yàn)室規(guī)模的不同溫度下加熱純?yōu)r青所產(chǎn)生的惡臭排放模式往往與瀝青/添加劑混合物的惡臭排放模式一致，強(qiáng)調(diào)了瀝青粘合劑的惡臭是如何導(dǎo)致與僅添加劑相比隱藏或掩蓋的。