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close this bookAsbestos Overview and Handling Recommendations (GTZ, 1996)
close this folderPart III. Asbestos substitutes
View the document1. Technical requirements for Asbestos substitutes
View the document2 Properties of typical Asbestos fiber substitutes - Overview
Open this folder and view contents3 Fiber substitutes for Asbestos fibers in the building area
Open this folder and view contents4 Fiber-free substitutes in construction area

1. Technical requirements for Asbestos substitutes

Due to the intense discussions about the environment in recent years, extensive efforts have been made to find substitutes for Asbestos containing materials.

The requirements on the substitutes are given by the physical-chemical properties of the Asbestos product to be replaced, which strongly depend on the technical area of application. The wide breadth of application areas for Asbestos has led to many substitute products. The German Environmental Agency (Umweltbundesamt, UBA) commissioned Battelle-lnstitut e.V. Frankfurt with the compilation of a catalogue of Asbestos substitutes, which was published in 10-volumes in 1985. According to this work, in spite of the unique properties of Asbestos, there are Asbestos-free alternatives for nearly every application. This is because not all of the properties are required for the individual applications, but rather the dominating characteristic for the application must be substituted. The following matrix provides useful information:

Table 16: Technical Properties of Asbestos Containing Materials Depending on their Binding in the Material

Area of Application

Fiber Form

Mechanical Properties

Chemical Properties

Thermal
Stability

Insulation

Specific
Friction
Characterisitic

Specific
Adhesive
Characteristic



Tensile
strength

E-
Modulus

Alkalines

Acids


Thermal

Electrical



Asbestos in inorganic matrix











- Asbestos cement

+

+

+

+







- Fire proof sheets

+

+

+








- Spray compounds

+

+

+








Asbestos in organic matrix











- Friction lining

+

+

+

+

+






- Gasket

+

+

+

+

(+)

(+)





- Plastic reinforcement

+

+

(+)

(+)







Asbestos products with little binding






















- Asbestos textiles

+

+

+

+







- Asbestos cardboard and paper

+

+

+

+







- Filter materials











Legend + of prime importance (+) for special products of importance

Source: Schreiber: Asbest-Ersatzstoffe, in: IACS, Page 13.4