The autoclave expansion test provides an index of potential delayed expansion caused by the hydration of CaO, or MgO, or both, when present in hydraulic cement.

1. Scope

1.1 This test method covers determination of the autoclave expansion of hydraulic cement by means of a test on a neat cement specimen.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.For specific precaution statements, see the section on Safety Precautions.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste

C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency

C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete

C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes

C856 Practice for Petrographic Examination of Hardened Concrete

C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of Hydraulic Cements

C1157 Performance Specification for Hydraulic Cement

Keywords

autoclave; autoclave expansion; expansion; hydraulic cement; soundness; Autoclave expansion; Change in length; Expansion--cement materials/applications; Portland cement; Volumetric measurement--cement/concrete;

ICS Code

ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

Citing ASTM Standards

[Back to Top]