ASTM-D3752 › Historical Revision Information
Standard Test Method for Strength Imparted by Asbestos to a Cementitious Matrix
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Scope
1.1 This test method covers the measurement, on a laboratory scale, of the contribution of asbestos fibers to the strength of asbestos-cement products. The results obtained are used in the primary assessment of different fiber grades prior to their application on a larger scale.
1.2 This test method covers the determination of the modulus of rupture (MR), adjusted to a dry density of 1.60 Mg/m3 (MR
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to "Safe Use of Chrysotile: A Manual on Preventive and Control Measures."
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
This procedure facilitates the comparison of different types or grades of asbestos based on their contribution to the flexural modulus of rupture; that is, the reinforcing value, which is considered the most pertinent property for the manufacture of asbestos-cement products.
This test method is primarily intended for fiber grades used normally in asbestos-cement products (Group 6 to Group 4 fibers). Longer fibers (Group 3) or shorter fibers (Group 7) may present difficulties during the preparation of the filter cake because of poor dispersion and uneven settling.5
Keywords
asbestos; asbestos-cement; cement matrix; determination; evaluation; reinforcement potential; strength; ICS Number Code 91.100.40 (Products in fibre-reinforced cement)
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91.100.40 (Products in fibre-reinforced cement)
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Document Number
ASTM-D3752-98(2006)
Revision Level
1998 R06 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
July 1, 2006
Document Type
Test Method
Page Count
7 pages
Committee Number
C17.03