摘要
针对常态碾压混凝土拱坝受温控措施制约而产生不均匀的收缩变形和坝面裂缝问题,基于MgO混凝土材料延迟膨胀特点,通过沙老河与三江拱坝8～10年的自生体积变形监测资料,对全坝外掺MgO混凝土的自生体积变形性态特征进行了较为深入地对比分析和比较,结果表明,外掺MgO混凝土可有效减少混凝土拱坝常见的温度变形问题,并降低工程成本,为其它类似工程设计提供有益的参考。
According to the normal roller compacted concrete arch dam easy of shrinkage distortion and dam-face crack under the condition of imperfect techniques of temperature control,based on the delay inflation feature of MgO concrete,and with the monitoring data of autogenous volume deformation from Shalaohe and Sanjiang arch dam for 8 to 10 years,the characteristics of autogenous volume deformation of MgO concrete are compared and analyzed deeply.It can be concluded that the addition of MgO in concrete could effectively tackle the common issues of temperature deformation,higher cost and so on in concrete arch dams,providing useful references for other projects and designers.
出处
《水利与建筑工程学报》
2012年第2期70-75,共6页
Journal of Water Resources and Architectural Engineering
