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ASTM C 1072 : 2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Test Methods for Measurement of Masonry Flexural Bond Strength

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM C 1072 : 2013

Language(s)

English

Published date

01-12-2012

€74.48
Excluding VAT

Committee
C 15
DocumentType
Test Method
Pages
19
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1These test methods evaluate the flexural bond strength, normal to the bed joints, of masonry built of manufactured masonry units. Sampling and testing procedures are referenced, and terms are defined. Three different specimen fabrication methods are specified, each for a different purpose:

1.1.1The first method is the “Test Method for Laboratory-Prepared Specimens.” Its purpose is to compare the bond strengths (under the given conditions) of masonry mortars. It could be used, for example, to check the quality of mortar products after production, or to indicate the bond strength (under the given conditions) of a mortar product without requiring the product to be tested in combination with many different units. It is not intended to represent field conditions. It uses standard concrete masonry units. Mortars are batched by weight equivalents of volume proportions and are mixed to a prescribed flow. Prisms are constructed using a jig and are bag-cured.

1.1.2The second method is the “Test Method for Field-Prepared Specimens.” Its purpose is to evaluate the bond strength (under the given conditions) of a particular unit-mortar combination, either for preconstruction evaluation of materials or for quality control purposes during construction. Mortars are batched conventionally, and the flow is not prescribed. Prisms are constructed conventionally (no jig) and are bag-cured.

1.1.3The third method is the “Test Method for Prisms Removed from Existing Masonry.” Its purpose is to evaluate the bond strength of unit-mortar combinations of prisms cut from existing walls.

1.1.4The three methods are not consistent, nor are they intended to be. They are intended to be used for three different purposes. To make this clear, the three methods are presented separately.

1.1.5Appendix X1 suggests two possible criteria for assessing the bond strength values obtained using these test methods. These possible evaluation criteria are given for illustration only and are not mandatory.

1.2The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3This 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.

ASTM C 1329/C1329M : 2016 : REV A Standard Specification for Mortar Cement
ASTM C 1825 : 2018 : EDT 1 Standard Guide for Developing Specifications for Masonry Units
ASTM C 1713 : 2017 Standard Specification for Mortars for the Repair of Historic Masonry
ASTM E 2260 : 2003 : R2012 : EDT 1 Standard Guide for Repointing (Tuckpointing) Historic Masonry
ASTM C 1587/C1587M : 2015 Standard Practice for Preparation of Field Removed Manufactured Masonry Units and Masonry Specimens for Testing
ASTM C 1093 : 2015 : REV A : EDT 1 Standard Practice for Accreditation of Testing Agencies for Masonry

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