混凝土碱-硅酸反应进程计算方法研究进展  

Research progress on calculation method of Alkali-Silica Reaction(ASR)process of concrete

作　　者：高鹏 顾宇航 王永博 GAO Peng;CU Yuhang;WANG Yongbo(Civil Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China;Intelligent Construction and Operation Engineering Research Center at Universities of Inner Mongolia Autonomous Region,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010 [2]内蒙古自治区高校智能建造与运维工程研究中心,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2024年第1期13-19,共7页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金(51868063);内蒙古自治区自然科学基金(2019MS05052)。

摘　　要：阐述了混凝土碱-硅酸反应(ASR)进程的模拟研究进展。首先对ASR计算模型研究现状进行总结,其次探寻了ASR计算模型中的最优模型,最后对现有ASR计算模型中所存在的问题提出建议。ASR计算模型主要包含理论模型、细观模型、宏观模型和宏细观阶梯模型。理论模型能够预测特定骨料类型及粒径条件下的砂浆扩展,但不适用于混凝土结构。其中,二价离子浓度的理论模型模拟精度最高;细观模型能够对ASR作用下混凝土细观裂纹分布进行描述,但建模较为复杂。其中,晶格离散粒子模型模拟精度最高;宏观模型能够对ASR作用下混凝土损伤区及损伤位移进行描述,但大多忽略混凝土蠕变效应。其中,宏观蠕变模型模拟精度最高;宏细观阶梯模型是全面的ASR计算模型,但研究较少,模拟精准度有待进一步研究。This paper describes the progress of simulation research on the Alkali-Silica Reaction(ASR)process in concrete.It first summarizes the current research status of ASR computational models,then explores the optimal models in ASR computational models,and finally proposes suggestions for the problems existing in existing ASR computational models.The computational models of ASR mainly include theoretical model,mesoscopic model,macroscopic model and macro mesoscopic ladder model.The theoretical model can predict mortar expansion under specific aggregate type and particle size conditions,but it is not suitable for concrete structure.A-mong them,the theoretical model of bivalent ion concentration has the highest simulation accuracy;the mesoscopic model can describe the distribution of mesoscopic cracks in concrete under the action of ASR,but the modeling is relatively complex.Among them,the lattice discrete particle model has the highest simulation accuracy;macroscopic models can describe the damage zone and damage dis-placement of concrete by ASR,but most of them ignore the creep effect of concrete.The simulation accuracy of macroscopic creep model is the highest;the macro mesoscopic ladder model is a comprehensive ASR computing model,but the research is less.On this respect,further researches are needed.

关 键 词：混凝土 碱-硅酸反应 模拟研究 计算模型 最优模型 

分 类 号：TU528.04[建筑科学—建筑技术科学]