Sol-Gel process for energy efficient heavy clay products

Adobe bricks and loam rendering are exceptionally ecological and economical products for use in the interior finishing of buildings. Their low resistance to liquid water, however, can be problematic. On contact with loam, liquid water causes the clay minerals to swell, and the loam-base products lose their structure and strength. Consequently, they are most unsuitable for use in bathrooms, kitchens and other wet areas.

This paper shows how hydrophobic treatment can protect loam-base building materials against the effects of contact with liquid water while still enabling the diffusion of water vapour.

Dipl.-Ing. (FH) Alexander Winkel M.Sc., Institut für Ziegelforschung Essen e.V.


Related articles:

Issue 2017-6 Dipl.-Ing. (FH) Alexander Winkel M.Sc.

1 Introduction Compared with other building materials, adobe products offer numerous advantages, including very good: moisture-regulating properties heat storage capacity ecological and economic...

Issue 2017-6

1 Context Adobe building products have very good moisture-regulating properties, enormous heat storage capacity and excellent ecological and economic properties (resource-efficient, reusable, low...

Technical Paper

1 Introduction Earthen architecture has been in renaissance since the 1980s. The days in which people who build homes of clay were belittled as a tree-hugging minority are over. Loam and clay have...

Issue 2010-06

1 Background The political objective of minimizing the use of fossil fuels, coupled with the economic pressure to which the European brick and tile industry finds itself exposed due to steadily...


Sponsoring foundation Kastell-Stiftung has donated a modular building component system to the home-town association Heimatverein Darfeld as help toward self-help. A group of youths with no artisanal...