混凝土综合碳化速率系数模型与服役寿命分析  

Comprehensive models of carbonation coefficient and service life analysis for concrete structures

作　　者：周明 赵家琦[2] 涂劲松 葛清蕴 Zhou Ming;Zhao Jiaqi;Tu Jinsong;Ge Qingyun(School of Architecture and Civil Engineering, West Anhui University, Lu'an 237012, China;School of Civil Engineering and Architecture, Guangxi University, Nanning 53004, China)

机构地区：[1]皖西学院建筑与土木工程学院,安徽六安237012 [2]广西大学土木建筑工程学院,广西南宁530004

出　　处：《湖南文理学院学报（自然科学版）》2019年第4期39-45,共7页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：安徽省高等学校自然科学基金重点项目(KJ2018A0415,KJ2018A0412,KJ2016A743)

摘　　要：为准确分析混凝土结构的碳化耐久性,提出了综合碳化速率系数的基本模型.通过综合考虑环境因素、二氧化碳的扩散系数随时间衰减特性及材料配合比参数等,收集标准实验条件下混凝土配合比参数与碳化速率系数数据,基于相关系数法和最小二乘法建立了混凝土标准碳化速率系数的多因素预测模型,并据此建立了基于综合碳化速率系数的混凝土碳化耐久性服役寿命预测方法.In order to accurately analyze the carbonation durability of concrete structures, a basic model of comprehensive carbonation rate coefficient is proposed. The data of concrete mix ratio and carbonation rate coefficient under standard experimental conditions were collected by considering environmental factors, carbon dioxide diffusivity attenuation with time, material mix ratio parameters and so on. Based on the correlation coefficient method and the least square method, a multi-factor prediction model of the standard carbonation rate coefficient of concrete is established, and then a service life prediction method of concrete carbonation durability based on the comprehensive carbonation rate coefficient is established.

关 键 词：混凝土 碳化 耐久性 碳化速率系数 

分 类 号：TU528.01[建筑科学—建筑技术科学]