摘要
综述了骨料粒径与碱硅酸反应(ASR)膨胀关系的研究现状,对现有研究的局限性和存在的问题进行了分析,阐述了进一步开展骨料粒径与ASR膨胀关系研究的必要性.重点介绍了ASR膨胀理论的研究方法,分别从材料层次和结构层次介绍了不同计算模型的思路、基本原理、基本假设和关键参数,指出了各自的优缺点和适用范围.最后通过对比分析,认为无论是材料层次还是结构层次的模型,在模拟ASR膨胀时均存在着一定的缺陷,并指出为了建立更为合理、适用性更强的ASR膨胀模型,应当同等重视微观的化学反应本身及宏观的物理膨胀过程.
New research achievements in the effect of aggregate size on alkali-silica reaction （ASR） expansion are reviewed. The limitations and existing problems are analyzed and the importance of further studies on the relationship between aggregate size and ASR induced expansion is pointed out. Then, the normal research method for investigating ASR expansion is introduced. The mechanism, hypothesis, key parameters of the existing models are discussed on the material level and structural level, respectively. The advantages and disadvantages of different models are also analyzed to evaluate their applicability. It is pointed out that neither the material models nor the structural models can appropriately simulate the ASR expansion. A method consists of both physical expansion and chemical reaction should be established to obtain a more reasonable and applicable model.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第5期1121-1128,共8页
Journal of Southeast University：Natural Science Edition
基金
国家重点基础研究发展计划(973计划)资助项目(2009CB623203)
关键词
碱硅酸反应
骨料粒径
膨胀
计算模型
alkali-silica reaction
aggregate size
expansion
calculation model
