Cover Image
close this bookAsbestos Overview and Handling Recommendations (GTZ, 1996)
close this folderPart III. Asbestos substitutes
close this folder3 Fiber substitutes for Asbestos fibers in the building area
View the document(introduction...)
View the document3.1 Non-textile fibers made of glass wool rock wool and mineral wool as well as ceramic wools
View the document3.2 Wollastonite
View the document3.3 Cellulose fibers
View the document3.4 Polyacrylnitril
View the document3.5 Polyvinylalcohol (PVA)
View the document3.6 Polypropylene (PP)
View the document3. 7 Summary

(introduction...)

In the building area Asbestos primarily is applied in the form of Asbestos cement, so that the most effective substitution is with Asbestos-free fibers (hereafter referred to as substitute fibers - SF- or substitute fiber cement - SFC).

After trials with plant fibers, such as flax or hemp, it was found that such fibers are not very appropriate because of their swelling capability and their low resistance against microbes. Steel fibers, on the other hand, are not appropriate due to their poor dispersing ability in the cement matrix. Trials with polyamides, such as nylon or perlon, also had to be given up after a longer period.

Very promising trials have been performed with polypropylene fibers, which bind extensively with cement. Presently, the following are mainly used as reinforcement for fibrous cement: polyacrylic fibers, such as Dolan 10 fibers, plastic fibers made with polyvinylalcohol or also cellulose fibers. In addition, non-textile glass fibers and wollastonite fibers are used. The spectra of properties of these types of fibers are described in the following sections.