Moisture and Thermal Conductivity of Lightweight Block Walls

2nd International Conference on Innovative Materials, Structures and Technologies

Joosep, R.^1

Estonian University of Life Sciences, Institute of Forestry and Rural Engineering, Kreutzwaldi 1, Tartu

51014, Estonia^1

关键词: Aerated concrete blocks;    Computational value;    Expanded clay aggregates;    External walls;    Insulated walls;    Lightweight blocks;    Wall construction;    Water draining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/96/1/012033/pdf
DOI  :  10.1088/1757-899X/96/1/012033

来源: IOP

【 摘 要 】

This article examines thermal properties of lightweight block walls and their changes over the course of time. Three different types of lightweight blocks and two types of heat insulation are used in construction. Aeroc aerated concrete blocks are in use, as well as compacted LECA (Lightweight Expanded Clay Aggregate) Fibo blocks made from burned clay and Silbet blocks produced from oil shale ash. Expanded Thermisol EPS60F polystyrene plates and glass wool Isover OL-P plates are used for thermal insulation. The actual and computational values of thermal conductivity and the water draining properties of walls over time are compared in this article. Water draining from glass wool walls is relatively fast. Water-draining can take over a year in polystyrene insulated walls. All four wall constructions can be used as external walls, but care must be taken regarding the moisture content of the blocks during construction (the construction should be handled with care to minimise the moisture in the blocks), especially in polystyrene board-insulated walls.