建筑垃圾杂填土路面基层材料制备及性能研究  

Preparation and performance study of construction waste miscellaneous fill road base material

作　　者：陈鹏 胡解平 谢琰 郭云云 孙孝平 徐其洋 解鹏洋 CHEN Peng;HU Xieping;XIE Yan;GUO Yunyun;SUN Xiaoping;XU Qiyang;XIE Pengyang(Wuhan Municipal Construction Group Co.Ltd.,Wuhan 430050,China;State Key Laboratory for Silicate Building Materials,Wuhan University of Technology,Wuhan 430070,China;CNBM Design&Research Institute Co.Ltd.,Hangzhou 310000,China)

机构地区：[1]武汉市市政建设集团有限公司,湖北武汉430050 [2]武汉理工大学硅酸盐工程中心国家重点实验室,湖北武汉430070 [3]中国新型建材设计研究院有限公司,浙江杭州310000

出　　处：《新型建筑材料》2025年第3期22-26,共5页New Building Materials

基　　金：“十四五”国家重点研发计划项目(2023YFB3711400)。

摘　　要：以水玻璃为激发剂,采用钢渣、矿渣、磷石膏、水泥为胶凝材料,以混凝土破碎料、素土等为主料,采用土体固化技术混拌制备新型建筑垃圾杂填土基层材料,对其性能展开研究。结果表明,采用20%复合胶凝材料[其中m(钢渣)∶m(矿渣)∶m(磷石膏)∶m(水泥)=15∶35∶42∶8、外掺模数1.25的水玻璃4%]、40%混凝土破碎料、40%素土制备的路面基层材料7 d无侧限抗压强度为6.9 MPa,60 d劈裂强度为1.09 MPa,28 d水稳系数>90%。水玻璃的掺入提高了胶凝材料液相中OH-和SiO_(3)^(2-)的浓度,促进了钢渣和矿渣的解聚与水化速度;复合胶凝材料水化产物C-A-S-H凝胶以填充或衔接的方式进入网络骨架,提高基体结构的致密化。This article uses steel slag,granulated blast furnace slag,phosphogypsum and cement as cementitious materials,with concrete crushed materials and plain soil as the main materials,and uses soil solidification technology to mix and prepare base materials.Its properties are studied.The results show that the composite cementitious material is 20%[in which,steel slag∶granulated blast furnace slag∶phosphogypsum∶cement is 15∶35∶42∶8,4%water glass with modulus of 1.25],40%concrete crushed material,40%plain soil,and the pavement base material has a 7 d strength of 6.9 MPa,and a 60 d splitting strength of 1.09 MPa,the 28 d water stability coefficient is>90%.The use of water glass as an activator increased the concentration of OH-and SiO_(3)^(2-) in the liquid phase,promoted the depolymerization and hydration speed between slag and steel slag.C-A-S-H(C-S-H)gel enters the network skeleton by filling or linking,promoting the densification of the matrix structure.

关 键 词：钢渣 矿渣 磷石膏 路面基层材料 性能 

分 类 号：TU528.37[建筑科学—建筑技术科学]