Hydric characterisation of rammed earth samples for different lime concentrations

[摘要] The rehabilitation of ancient rammed earth houses, as well as the use of earthen materials in modern constructions, are a growing matter of concern, especially in area such as Rhône-Alpes, France, where 40% of old constructions are in rammed earth. A current pathology observed for this type of construction is related to the rising damps, for which the water from the ground is absorbed by the wall. This situation leads to a very saturated state. As it has been proven that the compressive strength is altered by the presence of water in the pores, a better understanding on high relative humidity range is necessary to be able to predict the mechanical behavior of buildings and thus ensure a better risk assessment. The present study describes experimental results of the water uptake experiments and moisture storage at high relative humidities.

[发布机构] LGCB-LTDS, UMR 5513 CNRS, ENTPE, Université de Lyon, Vaulx-en-Velin; 69100, France^1;LOCIE, Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Chambéry; 73000, France^2;School of Energy Construction and Environment, Faculty of Engineering, Environment and Computing, Coventry University, United Kingdom^3

[效力级别] 运输工程

[关键词] High relative humidities;Lime concentration;Mechanical behavior;Moisture storage;Presence of water;Rammed earth;Saturated state;Water uptake