煤矸石粉填料橡胶沥青混合料路用性能研究  

Study on Road Performance of Coal Gangue Powder Filler Rubber Asphalt Mixture

作　　者：刘辰昊 张策 刘伟超 王立朋 李国林 刘佳辉 杨佳 LIU Chenhao;ZHANG Ce;LIU Weichao;WANG Lipeng;LI Guolin;LIU Jiahui;YANG Jia(College of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Key Laboratory of the Ministry of Education for Road and Railway Engineering Safety Assurance,Shijiazhuang Tiedao University,shijiazhuang 050043,China;Tianjin New Asia Pacific Engineering Construction Supervision Co.,Ltd.,Tianjin 300143,China;China Railway 19th Bureau Group Fifth Engineering Co.,Ltd.,Dalian 116103,China;China Railway 19th Bureau Group Co.,Ltd.,Beijing 100176,China;HeBei Provincial Commonications Planning Design and Research Institute Co.,Ltd.,Shijiazhuang 050021,China;China Technical Association on Geosynthetics,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学),石家庄050043 [3]天津新亚太工程建设监理有限公司,天津300143 [4]中铁十九局集团第五工程有限公司,大连116103 [5]中铁十九局集团有限公司,北京100176 [6]河北省交通规划设计研究院有限公司,石家庄050021 [7]中国土工合成材料工程协会,石家庄050043

出　　处：《粉煤灰综合利用》2025年第1期34-38,共5页Fly Ash Comprehensive Utilization

摘　　要：为探究煤矸石粉填料改性对橡胶沥青混合料路用性能的影响,采用煤矸石粉和石灰石粉两种填料进行橡胶沥青混合料ARHM-13(W)的路用性能分析。采用扫描电镜试验和XRF试验对比分析了填料的微观特性,通过马歇尔试验对比最佳油石比下各填料混合料的物理力学指标,通过高温车辙试验、低温小梁弯曲试验、冻融劈裂试验,对比分析各性能指标。结果表明:煤矸石粉较石灰石粉的表面构造更加复杂,含有鳞片状结构,比表面积更大,含有更多的SiO_(2)和Al_(2)O_(3)等活性氧化物,可作为良好的填料;煤矸石粉填料橡胶沥青混合料最佳油石比更大、动稳定度更高、永久变形更低,劈裂强度比提高,高温性能和水稳定性得到提高;石灰石粉填料橡胶沥青混合料的弯曲劲度模量更低、极限弯拉应变更大,低温性能相对较好;在对橡胶沥青混合料动稳定度、变形、强度、高温性能和水稳定性要求较高时可采用煤矸石粉作为填料,在提升沥青混合料路用性能的同时可提高煤矸石的利用率。In order to investigate the influence of coal gangue powder filler modification on the road performance of rubber asphalt mixture,coal gangue powder and limestone powder were used to analyze the road performance of rubber asphalt mixture ARHM-13(W).The microscopic properties of the fillers were compared by SEM and XRF tests,the physical and mechanical indexes of the fillers were compared by Marshall test under the optimal oil stone ratio,and the performance indexes were compared by high temperature rutting test,low temperature trabecular bending test and freeze-thaw splitting test.The results show that the surface structure of coal gangue powder is more complex than that of limestone powder,containing flake structure,larger specific surface area,containing more active oxides such as SiO_(2) and AL_(2)O_(3),which can be used as a good filler.The optimum ratio of oil stone,dynamic stability,permanent deformation,splitting strength ratio,high temperature performance and water stability of coal gangue powder filling rubber asphalt mixture are improved.The bending stiffness modulus of limestone powder filler rubber asphalt mixture is lower,the limit bending tension should be changed greatly,and the low temperature performance is relatively good.When the dynamic stability,deformation,strength,high temperature performance and water stability of rubber asphalt mixture are required,coal gangue powder can be used as filler,which can improve the road performance of asphalt mixture and improve the utilization rate of coal gangue.

关 键 词：煤矸石粉 橡胶沥青混合料 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]