摘要
为提高高速铁路桥面防水层的防水性能和耐久性能,采用高黏树脂制备树脂改性植物基乳化沥青,分析了高黏树脂用量对改性植物基乳化沥青蒸发残留物的常规性能、动力黏度、黏结性能、储存稳定性的影响。结果表明:随着高黏树脂用量的增加,改性植物基乳化沥青的软化点、黏结强度升高,针入度、15℃的延度下降,储存稳定性变化不大;当高黏树脂用量在40%~45%时,软化点大于80℃,延度大于60 cm,黏结强度大于1.5 MPa,综合性能最好;高黏树脂用量在40%~45%时,改性植物基乳化沥青随着温度的降低黏结强度先增大后减小,在-15℃出现最大值。
High-viscosity resin was used to prepare resin modified plant-based emulsified asphalt.The conventional properties,dynamic viscosity,adhesion and storage stability of evaporation residue of modified plant-based emulsified asphalt were analyzed.The results show that with the increase of the content of high-viscosity resin,the softening point and bonding strength of modified plant-based emulsified asphalt increase,the penetration and ductility at 15℃decrease,and the storage stability does not change much.When the content of high-viscosity resin is 40%~45%,the softening point is greater than 80℃,the ductility is greater than 60 cm,and the bonding strength is greater than 1.5 MPa,and the overall performance is the best.When the content of high-viscosity resin is 40%~45%,as the temperature decreases,the bonding strength of modified plant-based emulsified first increases and then decreases,with a maximum value at-15℃.
作者
赵静存
王鑫
丁宇
刘伟明
叶德军
ZHAO Jingcun;WANG Xin;DING Yu;LIU Weiming;YE Dejun(Metals and Chemistry Research Institute,China Academy of Railway Sciences Group Corporation Limited,Beijing 100081,China;Daqing Railway Maintenance Division,China Railway Haerbin Bureau Group Co.Ltd.,Daqing Heilongjiang 163000,China;Beijing Advanced Material Technology Co.Ltd.of China Academy of Railway Sciences,Beijing 100081,China)
出处
《铁道建筑》
北大核心
2021年第10期49-52,共4页
Railway Engineering
基金
中国铁道科学研究院集团有限公司基金(2019YJ099)
中国铁道科学研究院集团有限公司金属及化学研究所基金(2019XC0204)。
关键词
高速铁路
桥面防水层
改性植物基乳化沥青
高黏树脂
黏结性能
稳定性
high speed railway
waterproof layer of bridge deck
modified plant-based emulsified asphalt
high-viscosity resin
bonding behavior
stability
