本文選題：混凝土 + 低溫�。� 參考：《硅酸鹽學報》2014年11期

【摘要】：比較兩種現(xiàn)有混凝土低溫力學性能試驗方法,研究了低溫對相同含水率的混凝土力學性能影響。結果表明:將已達目標溫度的試件置于室溫進行力學性能測試,會導致試件溫度分布不均,很難準確反映目標溫度所對應的混凝土低溫力學特性,而在低溫環(huán)境中進行低溫力學性能測試更為合理�；炷恋蜏乜箟簭姸仍隽繒S溫度降低而增長;劈裂強度增量則在-40~-80℃范圍內出現(xiàn)極大值。在含水率相同情況下,膠凝材料比例差異對混凝土低溫劈裂強度影響遠大于抗壓強度。
[Abstract]:The effects of low temperature on the mechanical properties of concrete with the same moisture content were studied by comparing the two test methods of low temperature mechanical properties of concrete. The results show that the mechanical properties of the specimens that have reached the target temperature can be measured at room temperature, which will lead to the uneven temperature distribution of the specimen, and it is difficult to accurately reflect the mechanical properties of concrete at low temperature corresponding to the target temperature. It is more reasonable to test the mechanical properties of low temperature in low temperature environment. The increment of low temperature compressive strength of concrete will increase with the decrease of temperature, while the increment of splitting strength will be maximized in the range of -40 ~ 80 鈩，

本文編號：1844675