Effect of Material Composition on Cohesion Characteristics of Styrene-Butadiene-Styrene-Modified Asphalt Using Surface Free Energy
Effect of Material Composition on Cohesion Characteristics of Styrene-Butadiene-Styrene-Modified Asphalt Using Surface Free Energy
复制标题
利用表面自由能研究材料组成对苯乙烯-丁二烯-苯乙烯改性沥青粘结特性的影响
DOI：
10.1155/2017/9832406
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发表时间：
2017
影响因子：
--
通讯作者：
Bo Li
中科院分区：
文献类型：
--
作者：
Xing-jun Zhang;Hui-xia Feng;Xiao-min Li;Xiao-yu Ren;Zhen-feng Lv;Bo Li
将不同的基质沥青、SBS改性剂、抽出油和稳定剂混合，制得丁苯-丁苯-苯乙烯(SBS)改性沥青。采用座滴法测定了SBS改性沥青与蒸馏水、甘油、甲酰胺的接触角。基于表面能理论，计算了SBS改性沥青的表面自由能和粘结力。讨论了原料组成，如原沥青、SBS改性剂种类以及抽出油和稳定剂用量对SBS改性沥青粘结性能的影响。结果表明，原沥青与SBS改性剂具有良好的相容性，改善了粘聚性。支化SBS改性沥青的粘结力大于线型SBS改性沥青。SBS改性沥青的粘聚力随SBS改性剂和稳定剂用量的增加而提高，但抽出油含量过高时粘聚力降低。不同原料之间通过交联、缠绕、接枝形成稳定的三维网络结构，改善了SBS改性沥青的粘结性能。
Styrene-butadiene-styrene- (SBS-) modified asphalts were prepared by mixing different base asphalts, SBS modifier, extracting oil, and stabilizing agents. The contact angles between SBS-modified asphalt and distilled water, glycerol, and formamide were detected by the sessile drop method. Based on the surface energy theory, the surface free energy and cohesive power of SBS-modified asphalt were calculated. The influence of the raw materials composition, such as the virgin asphalt and SBS modifier types as well as the extracting oil and stabilizing agent contents, on the cohesive characteristics of SBS-modified asphalt was discussed. The results showed that virgin asphalt was compatible with SBS modifiers to improve cohesiveness. The cohesive power of branched SBS-modified asphalt was larger than that of linear SBS-modified asphalt. The cohesion of SBS-modified asphalt was improved as the SBS modifier and stabilizer contents increased but was reduced for excessive extraction oil contents. The cohesive characteristics of the SBS-modified asphalt were improved by the formation of stable three-dimensional network structures by cross-linking, winding, and grafting among different raw materials.
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DOI：
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发表时间：
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影响因子：
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