| Download | - View final version: Quality-control test for clay brick based on air permeability (PDF, 1.2 MiB)
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| Author | Search for: Arnott, M. R.1; Search for: Litvan, G. G.2 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
- National Research Council of Canada
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| Format | Text, Article |
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| Subject | Brick; clay bricks; freeze thaw cycles; durability; baking; permeability; firing temperature; retention time; freeze-thaw durability; modified blaine apparatus; minimum firing temperature determination; nitrogen surface-area tests |
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| Abstract | The degree of firing (a function of temperature and retention time) that a brick receives is a major determinant of its freeze- thaw durability. A rapid, simple quality control test was developed to assess freeze-thaw resistance based on the measurement of air permeability. The test is performed on a cylindrical core using a modified Blaine apparatus. Air permeability varies with firing temperature in a manner characteristic of a given brick mix and shows a maximum value at a relatively high firing temperature. The maximum air permeability is believed to occur at the minimum firing temperature at which sufficient particle-surface melting has occurred to develop a durable brick. The test thus can be used to define the minimum firing temperature for a given clay mix. The significance of the air- permeability values was further examined by performing conventional nitrogen surface-area tests. |
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| Publication date | 1988-08 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | IRC-P-1565 |
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| NRC number | NRCC 29609
NRC-IRC-3551 |
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| NPARC number | 20375583 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 782f3b55-0b16-4fcc-bdf6-c231642794e2 |
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| Record created | 2012-07-23 |
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| Record modified | 2023-12-19 |
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