论文部分内容阅读
本文介绍了确定普通混凝土导热系数的四个理论模型,它们分别是Campbell-Allen and Thorne模型、Hamilton and Crosser模型、Kook-Han Kim模型以及朱伯芳模型。通过这几个模型计算了不同骨料体积含量及不同强度等级混凝土的导热系数,并将这些计算值与实验值比较,可以发现Kook-Han Kim模型计算值的线性拟合与实验值较为接近;虽然其它三个模型计算值的线性拟合与实验值有一定误差,但当混凝土本身的导热系数越高时,它们得到的计算值的线性拟合与实验实测值的误差越小,而且这些模型足够可以反应各个因素对混凝土导热系数的影响。
This paper presents four theoretical models to determine the thermal conductivity of ordinary concrete. They are the Campbell-Allen and Thorne model, the Hamilton and Crosser model, the Kook-Han Kim model, and the Zhu Bo-Fang model. The thermal conductivities of concrete with different aggregate volume contents and different strength grades were calculated by these models. Comparing these calculated values with the experimental values, it can be found that the linear fitting of Kook-Han Kim model is close to the experimental value. Although the linear fitting of the calculated values of the other three models has some errors with the experimental values, when the thermal conductivity of the concrete itself is higher, the error between the linear fitting of the calculated values and the experimental values is smaller. Moreover, Sufficient to reflect the various factors on the concrete thermal conductivity.