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ASTM C35-01(R2019) pdf free download

ASTM C35-01(R2019) pdf free download.Standard Specification for Inorganic Aggregates for Use in Gypsum Plaster
1. Scope
1.1 This specification covers perlite, vermiculite, natural and manufactured sand for use as gypsum plaster aggregates. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions shall be in accordance with Terminology C11. 3.2 Definitions ofTerms Specific to This Standard: 3.2.1 manufactured sand, n—the fine material resulting from the crushing and classification by screening, or otherwise, of rock, gravel, or blast furnace slag. 3.2.2 natural sand, n—the fine granular material resulting from the natural disintegration of rock or from the crushing of friable sandstone. 3.2.3 perlite aggregate, n—a siliceous volcanic glass ex- panded by heat. 3.2.4 vermiculite aggregate, n—a micaceous mineral ex- panded by heat.
4. Chemical Composition
4.1 Water-soluble impurities in sand shall not exceed 0.15 weight % and sodium ion content shall not exceed 0.02 weight % when tested in accordance with Section 7. 4.2 Sand shall develop a color no darker than the standard, when subjected to the colorimetric test for organic impurities in accordance with Test Method C40/C40M, unless it is estab- lished by adequate tests that the impurities causing the color are not harmful in plaster.
5. Mechanical Requirements
5.1 Grading—Shall be as follows when tested in accordance with Section 7: 5.1.1 Perlite and vermiculite shall be graded within the limits specified in Table 1. 5.1.2 Natural and Manufactured Sand—Shall be graded with not more than 50 % retained between any two consecutive sieves shown in Table 1, nor more than 25 % between the No. 50 (300 µm) and No. 100 (150 µm) sieves. 5.2 Density: 5.2.1 Perlite shall have a density of not less than 6 nor more than 12 lb/ft 3 (96 to 192 kg/m 3 ) when tested in accordance with Test Method C29/C29M using the shoveling procedure. 5.2.2 Vermiculite shall have a density of not less than 6 nor more than 10 lb/ft 3 (96 to 160 kg/m 3 ) when tested in accor- dance with Test Method C29/C29M using the shoveling procedure.
6. Sampling
6.1 Apparatus—Suitable thief tube. 6.2 Bulk Aggregate—Obtain specimens of sand in accor- dance with Practice D75/D75M. 6.3 Bagged Aggregate—Obtain from 1 bag randomly se- lected from each 100 bags but not less than 6 bags from the shipment. For smaller shipments, not less than 6 % of the number of bags shall constitute the sample. 6.3.1 Secure specimens by inserting a suitable thief tube the full distance between diagonally opposite corners of the bag with the bag lying in a horizontal position. Combine the portions to produce a composite specimen having a volume not less than 1 ft 3 (0.028 m 3 ). Prepare and test not less than 1 composite specimen separately for each 2000 bags of aggre- gate. 6.4 Reduce specimens obtained in accordance with 6.2 or 6.3 by quartering or riffling to obtain specimens of proper size for individual tests.

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