Frost Action Mechanisms of Clay Roofing Tiles: Case Study
Frost Action Mechanisms of Clay Roofing Tiles: Case Study
复制标题
粘土屋顶瓦的防冻机理：案例研究
DOI：
10.1061/(asce)mt.1943-5533.0000500
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发表时间：
2012
影响因子：
3.2
通讯作者：
M. Radeka
中科院分区：
文献类型：
--
作者：
J. Ranogajec;P. Kojić;O. Rudić;V. Ducman;M. Radeka
本文研究了在900、920、960、1,000和1,020 ℃五种温度下烧制的粘土屋面瓦的质构特性和抗冻性预测。在较低的烧制温度（900和920°C）下，封闭容器和液压机制被证明是主要的，而微冰-透镜形成机制在较高的温度（960和1，000 °C）下具有重要作用。在1，020 °C下烧制的样品具有最高的电阻，其中霜作用机制是平衡的，因为多孔结构补偿了冷冻期间产生的局部应力。粘土屋面瓦的抗冻耐久性的预测，出现的第一个裂缝，和预测的统计模型给出的抗冻作用机制，表现出很高的一致性。该统计模型以毛管孔隙（P0.1）和冻水与未冻水之比（I）作为描述闭孔储层敏感性的重要参数。
AbstractClay roofing tiles fired at five different temperatures (900, 920, 960, 1,000, and 1,020°C) were subjected to the investigations of textural characteristics and frost resistance prediction. The closed container and hydraulic pressure mechanisms proved to be dominant at lower firing temperatures (900 and 920°C), whereas micro-ice-lens formation mechanism have significant role at higher temperatures (960 and 1,000°C). The highest resistance is noticed for the samples fired at 1,020°C where the frost action mechanisms are balanced because the porous structure that compensates the local stresses developed during freezing. The prediction of frost action durability of clay roofing tiles, the appearance of the first cracks, and the prediction of frost action mechanisms given by the statistical model, showed a high level of agreement. The statistical model contains capillary pores (P0.1), and the ratio of frozen and unfrozen water (I) as significant parameters for describing susceptibility to closed conta...