纳米ZnO/SBR复合改性乳化沥青及其微表处混合料性能  

Performance evaluation on nano ZnO/SBR composite modified emulsified asphalt and micro-surfacing mixture

作　　者：朱振祥 赵鑫 樊亮[2] 王琳 林江涛 ZHU Zhenxiang;ZHAO Xin;FAN Liang;WANG Lin;LIN Jiangtao(Shandong High-speed Group Shandong,Ji'nan 250001,China;Shandong Transportation Institute,Ji'nan 250012,China;Shandong Jianzhu University,Ji'nan 250101,China)

机构地区：[1]山东高速股份有限公司,山东济南250001 [2]山东省交通科学研究院,山东济南250012 [3]山东建筑大学,山东济南250101

出　　处：《新型建筑材料》2024年第3期82-85,120,共5页New Building Materials

基　　金：山东省交通科技计划项目(2018B21,2020B34)。

摘　　要：为了研究纳米ZnO与SBR对乳化沥青的复合改性效果和路用性能,开展了纳米ZnO/SBR复合改性乳化沥青的性能表征与评价工作,研究纳米ZnO掺量对乳化沥青以及微表处混合料路用性能的影响。研究表明,纳米ZnO对乳化沥青的流体特征(粒度、模量等)产生了明显影响,纳米ZnO掺量为2%、3%时提高了残留物的软化点、不可回复柔量和SPG等级等高温性能;纳米ZnO掺量为0~3%时,乳化沥青的高温等级均能达到SPG70。纳米ZnO改性乳化沥青应用于微表处混合料时,表现出破乳速度快、混合料早期强度高的特点;当纳米ZnO掺量大于2%后,乳化沥青稀浆料的工作性下降,破乳无法控制。In order to study the composite modification effect and road performance of nano-ZnO and SBR on emulsified asphalt,the paper carried out the performance characterization and evaluation of nano-ZnO/SBR composite modified emulsified asphalt,and studied the effect of nano-ZnO particles on the road performance of emulsified asphalt and micro-surfacing mixture.The research shows that nano-ZnO has a significant impact on the fluid characteristics(particle size,modulus,etc.)of emulsified asphalt.When the nano-ZnO content is 2%and 3%,it improves the high-temperature performance indicators such as softening point,non-recoverable flexibility and SPG grade of residue.Within the range of 0~3%content,the high temperature grade of emulsified asphalt can reach SPG70.When the nano-modified emulsified asphalt is applied to micro-surfacing mixture,it shows fast demulsification speed and high early strength of mixture.When the nano-ZnO content is more than 2%,the workability of emulsified asphalt slurry decreases and demulsification cannot be controlled.

关 键 词：纳米ZNO SBR 复合改性乳化沥青 微表处 破乳 

分 类 号：TU535[建筑科学—建筑技术科学]