季冻区路桥新型快速修补混凝土应用性能试验研究  

Experimental research on the new rapid repair concrete application performance of highway bridge in seasonal frozen area

作　　者：郭金波 屈丰来 刘晓洲 欧阳奇 Guo Jinbo;Qu Fenglai;Liu Xiaozhou;Ouyang Qi(Liaoning Transportation Planning&Design Institute Co.,Ltd,Shenyang 110111,China;College of Building Engineering,Quzhou College,Quzhou 324000,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司,辽宁沈阳110111 [2]衢州学院建筑工程学院,浙江衢州324000

出　　处：《山西建筑》2022年第5期85-87,共3页Shanxi Architecture

基　　金：辽宁省交通建设投资集团科研项目(编号:201913)。

摘　　要：从北方季冻区公路养护工程实际出发,针对利用传统硅酸盐水泥作为基材的混凝土快速修补材料,将富含Al_(2)O_(3),SiO_(2),含硫氧化物的激发剂来激发水泥加快水化形成稳定的钙矾石,以提升快修混凝土早期强度。同时将三萜皂甙类引气剂添加到混合料中,改善水泥混凝土的和易性,增大其密实度,从而提高此类快修混凝土的耐久性能。最后通过强度、冻融循环、电通量试验和耐磨试验验证了此种快速修补混凝土的应用性能。Starting from the highway maintenance engineering practice in northern seasonal frozen area,in light of traditional portland cement applied as basic rapid repair concrete material,the paper uses excitant contained in Al_(2)O_(3),SiO_(2) and Sulfurous oxide to stimulate cement hydration and to form stable ettringite,with a view to provide early-age high strength of rapid repair concrete.Instantaneously,it adds triterpenoid saponins air entraining agent into the mixture,improves the peaceability of the cement concrete,increases its density,and finally enhances the durability of the rapid repair concrete.In the end,through strength,frozen recycling,electric flux test and durability test,it testifies the application performance of rapid repair concrete.

关 键 词：季冻区 早强混凝土 钙矾石 三萜皂甙 激发剂 

分 类 号：U414[交通运输工程—道路与铁道工程]