ASTM C157/C157M-17
Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete

Standard No.

ASTM C157/C157M-17

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C157/C157M-17

Scope

4.1 Measurement of length change permits assessment of the potential for volumetric expansion or contraction of mortar or concrete due to various causes other than applied force or temperature change. This test method is particularly useful for comparative evaluation of this potential in different hydraulic-cement mortar or concrete mixtures.

4.2 This test method provides useful information for experimental purposes or for products that require testing under nonstandard mixing, placing, handling, or curing conditions, such as high product workability or different demolding times. Standard conditions are described in 5.4.1.

4.3 If conditions for mixing, curing, sampling, and storage other than specified in this test method are required, they shall be reported but are not to be considered as standard conditions of this test method. Nonstandard conditions and the reasons for departure from standard conditions shall be reported clearly and prominently with comparator values.

1.1 This test method covers the determination of the length changes that are produced by causes other than externally applied forces and temperature changes in hardened hydraulic-cement mortar and concrete specimens made in the laboratory and exposed to controlled conditions of temperature and moisture.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. An exception is with regard to sieve sizes and nominal size of aggregate, in which the SI values are the standard as stated in Specification E11. Within the text, the SI units are shown in brackets. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C157/C157M-17 Referenced Document

• ASTM C125 Standard Terminology Relating to Concrete and Concrete Aggregates
• ASTM C143/C143M Standard Test Method for Slump of Hydraulic-Cement Concrete
• ASTM C1437 Standard Test Method for Flow of Hydraulic Cement Mortar
• ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete
• ASTM C192/C192M Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory
• ASTM C305 Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
• ASTM C490 Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
• ASTM C511 Standard Specification for Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
• ASTM C596 Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
• ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes
• ASTM E337 Standard Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)

ASTM C157/C157M-17 history

• 2017 ASTM C157/C157M-17 Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• 2008 ASTM C157/C157M-08(2014)e1 Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• 2008 ASTM C157/C157M-08e1 Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• 2008 ASTM C157/C157M-08 Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• 2006 ASTM C157/C157M-06 Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• 2004 ASTM C157/C157M-04 Standard Test Method for Length Change of Hardened Hydraulic-Cement, Mortar, and Concrete
• 2003 ASTM C157/C157M-03 Standard Test Method for Length Change of Hardened Hydraulic-Cement, Mortar, and Concrete
• 1999 ASTM C157/C157M-99 Standard Test Method for Length Change of Hardened Hydraulic-Cement, Mortar, and Concrete
• 1975 ASTM C157-75 Standard Test Method for Length Change Of Hardened Cement Mortar And Concrete