| Download | - View final version: Compressive strengths of 2 inch cubes of types S and N mortars (PDF, 3.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.4224/40000621 |
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| Author | Search for: Davison, J. I.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Physical description | 22 p. |
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| Subject | Mortar; mortar; compressive strength; field tests; construction sites; laboratory tests; sand; air entraining agents; water cement ratios |
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| Abstract | I. TYPE S MORTAR: 1. Satisfactory curing results are obtained when mortar cubes are molded on the construction site, stored overnight in polyethylene bags, and taken into the laboratory at 20-24 hours for normal curing. 2. Field values substantially higher (62%) than the 1800 psi requirement for Type S mortar are attributed to the use of minimum amounts of sand in the mix. 3. Field values closer to the design requirements could have been obtained with a design mix established by a pre-construction laboratory evaluation. 4. The presence of an air-entraining material in the masonry mortar mix did not have any noticeable effect on strength values. 5. A 9% reduction in the weight per bag of Portland cement was not significantly reflected in reduced strength values. 6. 28 day tests were of no practical value on this project where 1 storey was completed every 4 1/2 days. II. TYPE N MORTAR There are wide variations among individual compressive strength values for cubes of Type N mortar from the field. 2. The variations in values are caused by a number of factors. 3. Field tests for moisture content and cementitious material to aggregate ratio in plastic mortar show some promise as quality control tests for on-site use. |
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| Publication date | 1973-02 |
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| Publisher | National Research Council of Canada |
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| Series | |
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| Language | English |
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| Peer reviewed | No |
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| NRC number | NRC-IRC-1646 |
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| NPARC number | 20377560 |
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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 | 3a22f7c6-ec56-40e8-aa6b-2b79c6e2c80a |
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| Record created | 2012-07-24 |
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| Record modified | 2023-12-19 |
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