道路基层地聚物砂浆结石体的强度  

Strength of Geopolymer Polymer Mortar Consolidation in Road Base

作　　者：狄升贯[1] 余功新 王朝辉[2] 张磊[2] DI Sheng-guan;YU Gong-xin;WANG Chao-hui;ZHANG Lei(Tianjin Municipal Engineering Design and Research Institute,Tianjin 300051,China;School of Highway,Chang an University,Xi'an 710064,Shaanxi,China)

机构地区：[1]天津市市政工程设计研究院,天津300051 [2]长安大学公路学院,陕西西安710064

出　　处：《筑路机械与施工机械化》2019年第4期68-72,共5页Road Machinery & Construction Mechanization

摘　　要：为更好将地聚物砂浆材料应用于道路基层注浆加固工程中,制备多个配比的高炉矿渣基地聚物砂浆,研究地聚物砂浆在不同注浆扩散半径下形成结石体的强度变化规律,进一步分析砂浆与注浆结石体7d无侧限抗压强度的相关关系。结果表明:当浆液扩散半径由10cm增大到60cm时,注浆结石体芯样的7d抗压强度由13.42MPa降低至8.16MPa;地聚物砂浆7d无侧限抗压强度由21.4MPa增长至33.6MPa时,注浆后结石体的强度相应由5.8 MPa提高至11.6 MPa,两者相关性较高,在实际工程中可基于地聚物砂浆强度对道路基层注浆加固效果进行预估。In order to better apply geopolymer mortar material to road base grouting reinforcement,the polymer mortar of blast furnace slag base with multiple proportions was prepared.The strength variation law of the consolidation formed by geopolymer mortar under different grouting diffusion radii was studied,and the relationship between the mortar and the 7 d unconfined compressive strength of the grout consolidation was further analyzed.The results show that when the grouting diffusion radius increases from 10 cm to 60 cm,the 7 d compressive strength of core samples of grout consolidation decreases from 13.42 MPa to 8.16 MPa,and the 7 d unconfined compressive strength of geopolymer mortar increases from 21.4 MPa to 33.6 MPa,the strength of the consolidation after grouting increases from 5.8 MPa to 11.6 MPa,and the correlation between the two is relatively high.In actual projects,the grouting reinforcement effect of the base course can be estimated based on the strength of the geopolymer mortar.

关 键 词：地聚物砂浆 结石体 注浆 抗压强度 

分 类 号：U414.01[交通运输工程—道路与铁道工程]