WATER-MOVEMENT IN POROUS BUILDING-MATERIALS .10. ABSORPTION FROM A SMALL CYLINDRICAL CAVITY

被引：19

作者：

WILSON, MA

HOFF, WD

HALL, C

机构：

[1] Department of Building Engineering, UMIST, Manchester, M60 1QD

[2] Schlumberger Cambridge Research, Cambridge, CB3 0HG

[3] Robinson College, Cambridge, CB3 9AN, Adams Road

来源：

BUILDING AND ENVIRONMENT | 1991年 / 26卷 / 02期

关键词：

D O I：

10.1016/0360-1323(91)90021-3

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The absorption of water from a cylindrical cavity is discussed in terms of the theory of water absorption by porous materials. The absorption process is analysed in terms of the sharp wet front model. Both theory and experiment show that the cumulative absorption from a cylindrical source varies as t1/2 in the limit as t --> 0 and that the time period for which t1/2 behaviour is observed increases with source radius. A simple two-term approximation to the equation governing the absorption of water from a cylindrical cavity at longer times is developed. Three methods of data analysis are applied to experimental results on clay brick, aerated concrete and mortars to obtain estimates of the water sorptivity of these materials.

引用

页码：143 / 152

页数：10

共 10 条

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