摘要
文中探讨了利用钢渣粉生产水泥稳定碎石的可行性.制备了钢渣粉-水泥稳定碎石试样,研究了其力学性能、水化产物、微观结构和水损害行为.结果表明:当钢渣粉掺量不超过胶凝材料总量的30%时,试样的7 d无侧限抗压强度超过4 MPa,满足工程应用要求;当钢渣粉掺量增加时,样品在12 d时的干燥收缩系数降低了32%,钢渣粉的添加抑制了干燥收缩;混合物中的主要水化产物是水化硅酸钙和钙矾石;钢渣粉的加入使试样内部结构变得更加疏松,有利于水分的渗入,使试样在水损伤后产生孔隙.
The feasibility of producing cement stabilized macadam with steel slag powder was discussed.Steel slag powder-cement stabilized macadam samples were prepared,and their mechanical properties,hydration products,microstructure and water damage behavior were studied.The results show that when the content of steel slag powder does not exceed 30%of the total cementitious material,the 7-day unconfined compressive strength of the sample exceeds 4 MPa,which meets the requirements of engineering application.When the content of steel slag powder increased,the drying shrinkage coefficient of the sample decreased by 32%at 12 days,and the addition of steel slag powder inhibited the drying shrinkage.The main hydration products in the mixture are hydrated calcium silicate and ettringite.The addition of steel slag powder makes the internal structure of the sample more loose,which is beneficial to the infiltration of water and makes the sample produce pores after water damage.
作者
张振
黄涛
张明
吴少鹏
谢君
杨鑫馗
彭高林
ZHANG Zhen;HUANG Tao;ZHANG Ming;WU Shaopeng;XIE Jun;YANG Xinkui;PENG Gaolin(Macheng Jinlei Green Materials Development Co.Ltd.,Macheng 438300,China;Hubei Geological and Mineral Investment Group Co.Ltd.,Wuhan 430080,China;School of Materials Science and Engineering Wuhan University of Technology,Wuhan 430070,China)
出处
《武汉理工大学学报（交通科学与工程版）》
2024年第6期1218-1223,共6页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
水泥稳定碎石
钢渣粉
力学性能
微观结构
cement stabilized macadam
steel slag powder
mechanical properties
microstructure
