ASTM C67/C67M-21 PDF

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.

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Published :	06/01/2021
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