Effects of oleochemical hydrophobing agents on plasters – results of a long-term field study

Even though the high efficacy of oleochemical additives as hydrophobing agents for mineral-based building materials has been proven by numerous laboratory tests there is a lack of measurements under field conditions. This paper will examine the results of various test specimens which were exposed to natural weathering for a period of up to three years.

1 Introduction

Oleochemical additives have been used successfully for decades as a hydrophobing agent for mineral-bound building materials. They can be used in a variety of ways in all kinds of products and exhibit good compatibility with other additives.

The effectiveness of the products in mineral plasters is tested in accordance with DIN EN ISO 15148 or DIN EN ISO 1015-18. Both methods measure the water absorption coefficients after the test specimens have been in defined storage for 28 days.

However, plasters and other building materials such as concrete are in no way static systems. After...

Related articles:

Issue 03/2024 PETER GREVEN

Oleochemical Hydrophobing Agents

Hydrophobing agents can come from various areas of chemistry: Silicone chemistry, such as silanes and siloxanes Wax chemistry, such as paraffins and montan waxes Polymer chemistry, such as...

more
Issue 4/2022 PETER GREVEN GMBH & CO. KG

New hydrophobing agent – Ligaphob CA 6 Plus

Hydrophobization is indispensable for the construction industry. Cracks or other visible damage to building materials are often caused by water or the increased absorption of water. Hydrophobing...

more
Issue 04/2024 PETER GREVEN

Oleochemical Additives for Concrete Production

Concrete requires different hydrophobization than, for example, plaster or mortar. Mixing often takes place in liquid form which makes a liquid water repellent almost indispensable. Common reasons for...

more
Issue 03/2014

A new water-repellent agent for gypsum-based drymix mortars

1 Introduction Builders appreciate gypsum-based construction materials for more than just economic and environmental reasons – they also value their favorable processing characteristics, as well as...

more
Issue 12/2008 Knowledge

Oleochemicals – important additives for building protection

Oleochemical raw materials, namely metallic soaps and sodium oleate are characterized by a beneficial cost/performance ratio. The water absorption coefficient (w) in water resistant plasters has to be...

more