ASTM C918 PDF

The specimens are stored under standard or accelerated curing conditions and the measured temperature history is used to compute a maturity index that is related to strength gain. 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. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. 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.

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Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More C In this test method, it is assumed that there is a linear relationship between strength and the logarithm of the maturity index. Experience has shown that this is an acceptable approximation for test ages between 24 h and 28 days under standard curing conditions. The user of this test method shall verify that the test data used to develop the prediction equation are represented correctly by the linear relationship.

If the underlying relationship between strength and the logarithm of the maturity index cannot be approximated by a straight line, the principle of this test method is applicable provided an appropriate equation is used to represent the non-linear relationship. Practice C provides procedures for using the measured in-place maturity index to estimate in-place strength.

The specimens are stored under standard or accelerated curing conditions and the measured temperature history is used to compute a maturity index that is related to strength gain. 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. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. 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.

Warning— Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Scope 1. Link to Active This link will always route to the current Active version of the standard.

CHEMALITE CASE STUDY PDF

ASTM C918/C918M - 20

Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More C The specimens are stored under standard-curing conditions and the measured temperature history is used to compute a maturity index that is related to strength gain. 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.

IDHU RAJAPATTAI ALLA PDF

Standard Test Method for Measuring Early-Age Compressive Strength and Projecting Later-Age Strength

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