Test Plan for ASTM C91 Masonry Cement
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Test Plan for ASTM C91 Masonry Cement
Required Tests
Property | Material | ASTM / Method | Details |
---|---|---|---|
Compressive Strength | Mortar | ASTM C109 | Compressive Strength of Hydraulic Cement Mortars Using 2″ Cube Specimens Cube specimens are cast and three are tested at each of 1, 3, 7, and 28 days of curing. Samples are cured for the first 24 hours in a standard moist room, and all subsequent days in saturated lime water. |
Autoclave Expansion | Cement Prisms | ASTM C151 | Autoclave Expansion of Hydraulic Cement Prisms are cast, and after 24 hours of curing, the lengths are measured. They are subsequently subjected to multiple hours of elevated temperature and pressure in an ASTM C151 compliant autoclave. Cement prisms are then cooled and measured. The length change is then compared with the initial length and compared to any relevant specification. |
Air Content | Mortar | ASTM C185 | Air Content of Mortar (Modified per ASTM C91) Mortar is cast to the desired consistency, and it is consolidated in a 400mL brass measuring container described in ASTM C185. The weight/volume is determined, and the air content is calculated based on the mix proportions. |
Normal Consistency | Cement Paste | ASTM C187 | Amount of Water Required for Normal Consistency of Hydraulic Cement Paste |
Time of Setting | Cement Paste | ASTM C266 | Time of Setting of Hydraulic Cement Pastes by Gillmore Needle Paste is caste to the desired consistency and placed in each section of the Gillmore apparatus. The Gillmore needles are used to determine when the initial and final set have occurred. |
Fineness | Cement Powder | ASTM C430 | Fineness of Hydraulic Cement by the 45-μm (No. 325) Sieve |
Water Retention | Mortar | ASTM C1506 | Air Content of Mortar (Modified per ASTM C91) |
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