CSA A82-14:2018 pdf download.Fired masonry brick made from clay or shale
4.1 General
Materials shall be those which are capable of developing a durable ceramic bond when fired.
Note: Examples of materials are clay or shale.
4.2 Materials other than clay or shale
Materials other than clay or shale shall be established by the manufacturer of the masonry units to conform to the National Building Code of Canada, as being suitable for use in fired clay masonry units.
Note: This Clause provides guidance for the manufacture of masonry units that contain innovative materials and as a prequalification to demonstrate that the unit in combination with mortar produces masonry that satisfies minimum requirements with respect to strength, serviceability, resistance to the penetration of moisture, and to freeze-thaw. It is not intended that these tests be performed before the commencement of each project.
5 Grades
Brick shall be graded as Interior Grade (IG) or Exterior Grade (EG). The grade shall be determined by testing in accordance with Clause 7. Either Grade EG or Grade IG brick shall be used for interior applications. Grade EG brick shall be used for exterior applications. Unless otherwise specified by the specifier, the basis for acceptance of brick shall be Grade EG.
Notes:
1) Grades are used to classify brick in accordance with their resistance to damage due to freezing and thawing cycles, with Grade EG having greater resistance than Grade IG under the requirements of this Standard.
2) In exterior applications, brick masonry should be detailed to avoid saturation or near-saturation of the units.
7.2.3.2 Acceptance of subsequent lots
Brick from lots manufactured subsequent to the reference lot for which freeze-thaw testing has been performed in accordance with Clause 15 may be deemed Grade EG without undergoing the freeze-thaw test if
a) the reference lot met the requirements of Clause 7.2.3.1;
b) not more than two years have passed since the testing of the reference lot;
c) the compressive strength of each specimen in the sample taken from the subsequent lot is greater than the compressive strength of the specimen with the lowest compressive strength in the sample taken from the reference lot;
d) the cold and boiling water absorption of each specimen in the sample taken from the subsequent lot is not greater than the cold and boiling water absorption of the specimens with the greatest cold and boilling water absorptions in the sample taken from the reference lot; and
e) the saturation coefficient of each specimen in the sample taken from the subsequent lot is not greater than the saturation coefficient of the specimen with the greatest saturation coefficient in the sample taken from the reference lot.CSA A82-14 pdf download.