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ASTM C67 / C67M - 21
Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile
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Abstract
These test methods cover procedures for the sampling and testing of brick and structural clay tile. The tests include modulus of rupture, compressive strength, absorption, saturation coefficient, effect of freezing and thawing, efflorescence, initial rate or absorption, and determination of weight, size, warpage, length chanange, and void areas. For purposes of these tests, full-size bricks, tiles, or solid masonry units shall be used as test specimens. They shall be representative of the lot of units from which they are to be selected in respect of the range of colors, textures, and sizes and shall be free of or brushed to remove dirt, mud, mortar, or other foreign materials unassociated with the manufacturing process.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 These test methods cover procedures for the sampling and testing of brick and structural clay tile. Although not necessarily applicable to all types of units, tests include modulus of rupture, compressive strength, absorption, saturation coefficient, effect of freezing and thawing, efflorescence, initial rate of absorption and determination of weight, size, warpage, length change, and void area. (Additional methods of test pertinent to ceramic glazes include imperviousness, chemical resistance, opacity, and resistance to crazing.
1.2 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
Note 1: The testing laboratory performing this test method should be evaluated in accordance with Practice C1093.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.4 These test methods include the following sections:
| Section Heading | Section |
| Scope | 1 |
| Referenced Documents | 2 |
| Terminology | 3 |
| Sampling | 4 |
| Specimen Preparation | 5 |
| Modulus of Rupture (Flexure Test) | 6 |
| Compressive Strength | 7 |
| Absorption | 8 |
| Freezing and Thawing | 9 |
| Initial Rate of Absorption (Suction) (Laboratory Test) | 10 |
| Efflorescence | 11 |
| Weight Per Unit Area | 12 |
| Measurement of Size | 13 |
| Measurement of Warpage | 14 |
| Measurement of Length Change | 15 |
| Initial Rate of Absorption (Suction) (Field Test) | 16 |
| Measurement of Void Area in Cored Units | 17 |
| Measurement of Void Area in Deep Frogged Units | 18 |
| Measurement of Out of Square | 19 |
| Measurement of Shell and Web Thickness | 20 |
| Breaking Load | 21 |
| Imperviousness Test (of Ceramin Glazes) | 22 |
| Chemical Resistance Test (of Ceramic Glazes) | 23 |
| Autoclaved Crazing Test (of Ceramic Glazes) | 24 |
| Opacity Test (of Ceramic Glazes) | 25 |
| Precision and Bias | 26 |
| Keywords | 27 |
| Safety Precautions for Autoclave Equipment and Operation | Appendix X1 |
1.5 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.
1.6 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C150/C150M Specification for Portland Cement
C1093 Practice for Accreditation of Testing Agencies for Masonry
C1232 Terminology for Masonry
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Code
ICS Number Code 81.080 (Refractories)
UNSPSC Code
UNSPSC Code 30131600(Bricks)
Referencing This Standard
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DOI: 10.1520/C0067_C0067M-21
Citation Format
ASTM C67 / C67M-21, Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile, ASTM International, West Conshohocken, PA, 2021, www.astm.org
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