ASTM C878/C878M-22 - 15.10.2022
 
Significance and Use

4.1?Since the potential for expansion, under conditions of controlled restraint, of concrete made with shrinkage-compensating cement cannot always be satisfactorily predicted from tests of mortars made in accordance with Test Method C806, a need has been recognized for a test method in which concrete specimens are tested.

4.2?This test method can also be adapted readily to studies of expansion involving degrees of restraint, comparisons of cements, effects of cement contents, mixture proportions, schedules, or environmental treatments that differ from the standard procedures prescribed by this test method.

 
1. Scope

1.1?This test method covers the determination of the expansion of concrete made with shrinkage-compensating cement.

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, 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.

 
2. Referenced Documents

C125-21a

Standard Terminology Relating to Concrete and Concrete Aggregates (Includes all amendments and changes 10/14/2021).

C192/C192M-19

Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory

C219-20a

Standard Terminology Relating to Hydraulic and Other Inorganic Cements (Includes all amendments and changes 8/28/2020).

C490-07

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

223R

Guide for the Use of Shrinkage-Compensating Concrete

C806-23

Standard Test Method for Restrained Expansion of Expansive Cement Mortar

C845-04

Standard Specification for Expansive Hydraulic Cement

CT

ACI Concrete Terminology

C670-24a

Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 3/11/2024).