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ASTM C1074-11

Historical Revision

Standard Practice for Estimating Concrete Strength<br> by the Maturity Method

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1.1 This practice provides a procedure for estimating concrete strength by means of the maturity method. The maturity index is expressed either in terms of the temperature-time factor or in terms of the equivalent age at a specified temperature.

1.2 This practice requires establishing the strength-maturity relationship of the concrete mixture in the laboratory and recording the temperature history of the concrete for which strength is to be estimated.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. )

This practice can be used to estimate the in-place strength of concrete to allow the start of critical construction activities such as: (1) removal of formwork and reshoring; (2) post-tensioning of tendons; (3) termination of cold weather protection; and (4) opening of roadways to traffic.

This practice can be used to estimate strength of laboratory specimens cured under non-standard temperature conditions.

The major limitations of the maturity method are: (1) the concrete must be maintained in a condition that permits cement hydration; (2) the method does not take into account the effects of early-age concrete temperature on the long-term strength; and (3) the method needs to be supplemented by other indications of the potential strength of the concrete mixture.

The accuracy of the estimated strength depends, in part, on using the appropriate maturity function for the particular concrete mixture. Annex A1 provides a procedure for determining experimentally the best parameters (datum temperature or value of Q) for the maturity functions described in Section 6.

SDO ASTM: ASTM International
Document Number C1074
Publication Date June 15, 2011
Language en - English
Page Count 10
Revision Level 11
Supercedes
Committee C09.64
Publish Date Document Id Type View
June 1, 2019 C1074-19E01 Revision
June 1, 2019 C1074-19 Revision
Dec. 15, 2017 C1074-17 Revision
June 15, 2011 C1074-11 Revision
Dec. 15, 2010 C1074-10A Revision
June 15, 2010 C1074-10 Revision
June 1, 2004 C1074-04 Revision
Nov. 10, 1998 C1074-98 Revision