装配式桥梁墩底垫层砂浆性能提升技术  

Improvement technology on performance of cushion mortar of prefabricated bridge pier bottom

作　　者：王冬[1,2,3,4] 张金康 祝烨然 石明建[2,3,4] WANG Dong;ZHANG Jinkang;ZHU Yeran;SHI Mingjian(Nanjing Hydraulic Research Institute,Nanjing 210024,China;Nanjing R&D Hi-Tech Co.Ltd.,Nanjing 211161,China;Research Center on New Materials in Hydraulic Structures,Ministry of Water Resources,Nanjing 210024,China;Anhui R&H New Materials Co.Ltd.,Anhui Academician Workstation,Maanshan 238281,China;Nanjing Highway Development Center,Nanjing 210008,China)

机构地区：[1]南京水利科学研究院,江苏南京210024 [2]南京瑞迪高新技术有限公司,江苏南京211161 [3]水利部水工新材料工程技术中心,江苏南京210024 [4]安徽瑞和新材料有限公司安徽省院士工作站,安徽马鞍山238281 [5]南京市公路事业发展中心,江苏南京210008

出　　处：《新型建筑材料》2021年第8期43-46,共4页New Building Materials

摘　　要：主要研究了高效活性粉HLC-MS101配制的墩底垫层砂浆的力学性能、粘结性能、体积稳定性和抗氯离子侵蚀性能,并与普通市售垫层砂浆进行对比。结果表明:采用20%MS101等质量取代水泥,大大增加了墩底垫层砂浆的致密性,制备的墩底垫层砂浆28 d抗压、抗折、粘结强度及干缩体积稳定性较市售J60-Ⅲ砂浆分别提高了32.4%、49.2%、12.0%和19.5%,抗氯离子侵蚀性能等级由差提升到很好,大大提高了墩底垫层砂浆的破坏承载力和环境侵蚀的抵抗能力。Properties of the mechanical,adhesion,volume stability and ionic erosion resistance of pier bottom cushion mortar prepared by highly effective active powder HLC-MS101 and ordinary commercial cushion mortar were studied.Results show that using 20%MS101 quality instead of cement,greatly increases the pier bottom cushion mortar density.The compressive strength,flexure strength,bond strength and dry shrinkage volume stability of the prepared pier cushion mortar at 28 days of age are increased by 32.4%,49.2%,12.0%and 19.5%,respectively,compared with the commercial J60-Ⅲmortar,the chloride ion erosion resistance level from bad to good,greatly improving the bearing capacity of the destruction and environmental erosion resistance of the pier bottom bedding mortar.

关 键 词：装配式桥梁 墩底垫层砂浆 高效活性粉 提升技术 

分 类 号：TU582[建筑科学—建筑技术科学]