【摘要】 通过试验条件诱发游离氧化钙(f-CaO)发生反应,以检验混凝土的体积安定.试验结果表明:f-CaO超限是可能引起混凝土体积安定性的影响因素;对芯样进行严格的湿热工艺处理后,芯样线变化率和抗压强度均在允许的范围内,该工程项目不用拆除可继续施工;经过持续13a的观测,未发现由于f-CaO安定性引起的工程质量异常.更多还原

【Abstract】 Under the test conditions,free-CaO reaction was induced,the concrete volume stability was inspected.The experimental results show that over-limit free-CaO is the main factor causing the cement volume stability.After the strict heat-moisture treatment for core sample,both the line change rate and compressive strength were within the permitted range.Consequently,the engineering needs not to be demolished,the construction continued as usual,under observation lasting for 13years,no abnormal structure damage due to f-CaO volume stability has been found.更多还原