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ASTM C1038-04

Current Revision

Standard Test Method for Expansion of Hydraulic Cement Mortar Bars Stored in Water

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1.1 This test method covers the determination of the expansion of mortar bars made using hydraulic cement, of which sulfate is an integral part.

1.1.1 Warning: Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.

1.2 The values stated in SI units are to be regarded as the standard. Values in parentheses are for information only.

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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This test method is used to determine the amount of expansion of a mortar bar when it is stored in water. The amount of mortar-bar expansion may relate to the amount of sulfate in the cement; expansion may become excessive when the cement contains too much sulfate.

Some cement specifications limit the amount of sulfate contained in hydraulic cement by requiring that the amount of expansion in water not exceed a specified value.

SDO ASTM: ASTM International
Document Number C1038
Publication Date July 1, 2004
Language en - English
Page Count 3
Revision Level 04
Supercedes
Committee C01.28
Publish Date Document Id Type View
July 1, 2004 C1038-04 Revision
Aug. 10, 2001 C1038-95 Revision
Aug. 10, 2001 C1038-01E01 Revision
Aug. 10, 2001 C1038-01 Revision