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2025, 06, v.34 29-36
布敦岩复合改性沥青灌缝胶的制备与性能研究
基金项目(Foundation):
邮箱(Email): zhaosu2005@126.com;
DOI: 10.13416/j.ca.2025.06.006
摘要:

本研究将布敦岩沥青与其他改性剂复合,制备了一种复合改性沥青灌缝胶。其中选用布敦岩沥青(BRA)、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)聚合物、橡胶粉、增容剂、增塑剂和增黏剂对基质沥青进行复合改性,采用6因素3水平正交试验设计,以路面灌缝胶的常规性能作为评价指标,通过极差分析法和方差分析法探究了各因素对灌缝胶性能的影响程度,研究布敦岩复合改性沥青灌缝胶的最佳配合比。通过布氏旋转黏度试验确定了灌缝胶的最佳施工温度,采用室内试验模拟评价了灌缝胶的储存老化性能,采用扫描电镜观察了灌缝胶与骨料界面的粘接情况。研究结果表明:通过正交试验极差分析和方差分析结果可知,布敦岩沥青和SBS对路面灌缝胶的常规性能均具有显著影响,布敦岩复合改性沥青灌缝胶满足路面灌缝胶技术指标要求(JT/T 740—2015)中高温型灌缝胶的要求。布敦岩沥青和SBS聚合物对于复合改性沥青灌缝胶的性能影响相比其他因素较大,布敦岩复合改性沥青灌缝胶的最佳配比(质量分数比)为,m(基质沥青)∶m(布敦岩沥青)∶m(SBS)∶m(废胶粉)∶m(增容剂)∶m(增塑剂)∶m(增黏剂)=100∶16∶8∶20∶10∶2∶2。布敦岩复合改性沥青灌缝胶的最佳施工温度为195.5℃,现场储存时间不应超过12 h。通过扫描电镜设备发现,布敦岩复合改性沥青灌缝胶与骨料界面的粘接性良好。

Abstract:

A composite modified asphalt grouting adhesive was prepared by combining Buton rock asphalt with other modifiers in this study. Among them,Buton rock asphalt(BRA),styrene-butadiene-styrene block copolymer(SBS) polymer,rubber powder,compatibilizer,plasticizer,and tackifier were selected for composite modification of matrix asphalt. A six-factor three-level orthogonal experimental design was adopted,and the conventional performance of pavement grouting adhesive was used as the evaluation index.The influence of various factors on the performance of grouting adhesive was explored through range analysis and variance analysis,and the optimal mixing ratio of Buton rock composite modified asphalt grouting adhesive was studied. The optimal construction temperature of the grouting adhesive was determined through the Brookfield rotational viscosity test.The storage aging performance of the grouting adhesive was evaluated through indoor test simulation.The bonding between the grouting adhesive and the aggregate interface was observed using scanning electron microscopy.The research results showed that through the analysis of range and variance in orthogonal experiment,it could be concluded that both Buton rock asphalt and SBS had a significant impact on the conventional performance of pavement grouting adhesive. Buton rock composite modified asphalt grouting adhesive met the technical requirements(JT/T 740—2015) for high temperature grouting adhesive. Compared with other factors,the performance of composite modified asphalt grouting adhesive was greatly affected by Buton rock asphalt and SBS polymer.The optimal ratio(mass fraction ratio) of Buton rock composite modified asphalt grouting adhesive was,m(matrix asphalt)∶m(Buton rock asphalt)∶m(SBS)∶m(waste rubber powder)∶m(compatibilizer)∶m(plasticizer)∶m(tackifier)=100∶16∶20∶10∶2∶2.The optimal construction temperature of grouting adhesive was 195.5 ℃,and the on-site storage time was ≤12 h.Through scanning electron microscopy equipment,it was found that the bonding between the Budun rock composite modified asphalt grouting adhesive and the aggregate interface was good.

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基本信息:

DOI:10.13416/j.ca.2025.06.006

中图分类号:U414

引用信息:

[1]王园明,赵苏.布敦岩复合改性沥青灌缝胶的制备与性能研究[J].中国胶粘剂,2025,34(06):29-36.DOI:10.13416/j.ca.2025.06.006.

基金信息:

引用

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