摘要
为研究钢渣粉对沥青与集料黏附性能影响,制备不同掺量下的钢渣粉沥青胶浆,其中钢渣粉掺量(等比例替代石灰岩矿粉)为25%、50%、75%和100%,对照组填料分别为水泥、矿粉和熟石灰。采用接触角试验得到各沥青胶浆与天然集料的接触角,并基于表面自由能理论,计算得到各沥青胶浆与天然集料的表面能指标,表征了钢渣粉沥青胶浆与集料的界面关系,定量评价了钢渣粉沥青胶浆的黏附性能。试验结果表明,钢渣粉能提高沥青胶浆的表面能,且各种沥青胶浆与石灰岩的黏附功最大、剥落功最小,而与花岗岩的黏附功最小、剥落功最大。根据不同填料类型沥青胶浆与集料的能量数据,可以发现不同填料对黏附性能改善的大小顺序为熟石灰>25%钢渣粉>水泥>矿粉。
In order to study the effect of steel slag powder on the adhesion of asphalt and aggregate,asphalt mortar with different dosage of steel slag powder was prepared.The content of steel slag powder(equal proportion to replace limestone ore powder)is 25%,50%,75%and 100%.In control group,the fillers are cement,mineral powder and hydrated lime.The contact angle between asphalt mortar and natural aggregate was obtained by contact angle test.Based on the theory of surface free energy,the surface energy indexes of asphalt mortar and natural aggregate were calculated.The interfacial relationship between steel slag powder asphalt mortar and aggregate was characterized,and the adhesion properties of steel slag powder asphalt mortar were quantitatively evaluated.The test results show that steel slag powder can improve the surface energy of asphalt mortar.The adhesion of all kinds of asphalt mortar to limestone is the largest and the peeling work is the smallest.The adhesion work of asphalt mortar to granite is the smallest and the peeling work is the largest.According to the energy data of asphalt mortar and aggregate of different fillers,it can be found that the order of the improvement of adhesive properties of different fillers is hydrated lime>25%steel slag powder>cement>mineral powder.
作者
王浩
WANG Hao(Guangxi Transportation Science and Technology Group Co.,Ltd.)
出处
《广东建材》
2025年第5期26-30,共5页
Guangdong Building Materials
基金
交通运输行业重点科技项目“钢渣在沥青路面无害化资源化利用技术与应用示范”(2021-MS5-125)
广西重点研发计划“钢渣在沥青路面无害化资源化利用技术与应用示范”(桂科AB21196061).
关键词
道路工程
钢渣
沥青胶浆
表面自由能
黏附性能
Road engineering
Steel slag
Asphalt mortar
Surface free energy
Adhesion property
