摘要
目的研究自行研制的三种由玉米秸秆制作的生物质融雪剂腐蚀下沥青混合料的损伤特性,为道路材料融雪剂腐蚀损伤研究方法和手段提供参考。方法采用干湿循环浸泡试验,通过对受蚀前后沥青混合料力学性能变化的表征,运用损伤力学方法分析混合料在承受荷载过程中融雪剂腐蚀对其应力-应变本构关系的影响,探析融雪剂腐蚀和荷载耦合作用对混合料损伤扩展的影响,并建立融雪剂腐蚀-受荷损伤演化模型。结果三种融雪剂及对照组氯盐和纯水的腐蚀会对沥青混合料产生不利影响,对马歇尔稳定度、劈裂强度以及抗压强度三个力学参数影响的大小顺序依次为ZM-3,氯盐融雪剂,ZM-2,ZM-1,水;对劈裂劲度模量与抗压回弹模量影响的大小顺序依次为ZM-3,ZM-1,ZM-2,氯盐融雪剂,水。结论笔者建立的沥青混合料在融雪剂腐蚀下的受荷损伤模型能较好地表征混合料总损伤度随应变的演化规律;在四种融雪剂均能满足融雪要求的前提下考虑它们在不同受荷条件下对沥青混合料的腐蚀,建议选用ZM-2融雪剂用于沥青道路融雪。
Corrosion of the three corn straw developed deicers on asphalt mixture was investigated through characterization of the mechanical properties of asphalt mixture before and after the dry and wet cyclic immersion test.The impact of the deicer corrosion on the stress-strain relationship of the asphalt mixture under load is analyzed using damage mechanics.The coupled influence of the deicer corrosion and the load on the damage propagation of the asphalt mixture was analyzed,and the evolution mechanical model of the corrosion and load effect was established.The results show that the order of influence of the three deicers,the chlorine salt and pure water on the Marshall stability,splitting and compressive strength of asphalt mixture was ZM-3,Chlorine salt,ZM-2,ZM-1,water;while the impact order of the splitting stiffness modulus and compressive resilience modulus is ZM-3,ZM-1,ZM-2,chloride salt,water.The proposed model can describe how the damage degree of asphalt mixture evolves with the strain.This work provides a reference for the research approaches and means of corrosion damage of road materials.
作者
张倩
马浩轩
唐超
高鸿丽
ZHANG Qian;MA Haoxuan;TANG Chao;GAO Hongli(School of Civil Engineering,Xi′an University of Architecture&Technology,Xi′an,China,710055;Shaanxi Key Lab of Geotechnical and Underground Space Engineering(XAUAT),Xi′an,China,710055;Shaanxi Provincial Expressway Construction Group Co.Xihan Branch,Xi′an,China,710065)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第1期121-130,共10页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(52008333)
陕西省交通运输厅交通科研项目(16-14K)
浙江省公路与运输管理中心(2019H01)
衢州市科技计划项目(2019KK39)。
