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溫拌劑對瀝青感溫性的影響分析

作者:王楓成,朱建平

關鍵字:溫拌劑,對,瀝青,感溫,性的,影響,分析,遼甯省,

 
(遼甯省交通科學研究院有限責任公司,交通運輸行業重點實驗室,遼甯 沈陽  110015) 
摘要:研究溫拌劑摻量對瀝青感溫性的影響。結果表明:随溫拌劑摻量的增加,針入度指數(PI)變化沒有規律性,不能評價溫拌劑摻量對瀝青感溫性的影響;針入度黏度指數(PVN)的絕對值随溫拌劑摻量增加而增大,但溫拌劑摻量在2%以上時其值超過評價範圍,不能作為評價指标;瀝青黏溫指數(VTS)可以區分不同溫度區間範圍内瀝青的感溫性,并可以初步判斷出顆粒溫拌劑的相變溫度範圍;通過Arrhenius公式拟合瀝青旋轉黏度結果表明,在不合理的溫度區間内得到的瀝青粘流活化能無實際意義,隻有在溫拌劑融化後得到的瀝青粘流活化能才可以合理評價瀝青感溫性。
關鍵詞:溫度敏感性;旋轉黏度;溫拌劑;黏溫指數;粘流活化能
中圖分類号:TU535        文獻标識碼:A        文章編号:1001-702X(2019)07-0150-04
 
Temperature susceptibility performance analysis of asphalt with warm-mixed agent
WANG Fengcheng,ZHU Jianping
(Liaoning Provincial Communications Sciences Institute Co. Ltd.,Key Laboratory of Transport Industry,Shenyang 110015,China) 
Abstract:Researching on influence of warm-mixed agent content on asphalt temperature sensitivity. In this study,asphalt penetration index(PI) have not proportionally with the increase of warm-mixed agent,the influence of warm-mixed agent on
asphalt temperature sensitivity can not be evaluated. The asphalt penetration-viscosity numbers(PVN) absolute value increases
proportionally with warm-mixed agent content,it is inappropriate evaluation that the range of evaluation is exceeded when the warm-mixed agent content is above 2%. The asphalt temperature sensitivity in various temperature range are reacted by viscosity-temperature susceptibility(VTS). The phase-transition temperature of warm-mixed agent was also determined preliminarily. The
 results of the Arrhenius formula fit the rotary viscometer of asphalt shown that the asphalt viscous flow activation energy in the unreasonable temperature range was not practical,the asphalt temperature sensitivity was reasonably evaluate by the asphalt viscous flow activation energy being obtained after the warm-mixed agent was melted.
Key words:temperature susceptibility performance,rotary viscometer,viscosity-temperature susceptibility,viscous flow activation energy