Grey portland cement
US $40.00
Highest quality for white, grey Portland cement 42.5/Cement/Plaster/Ordinary 27739729209
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- Supplier: KOFONS BUSINESS SOLUTIONS PTY LTDKOFONS LTD
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Product Overview
Description
Table 2. ASTM Types of Portland Cement
| Type | Name | Purpose |
|---|---|---|
| IA | Normal-Air Entraining | An air-entraining modification of Type I. |
| IIA | Moderate Sulfate Resistance-Air Entraining | An air-entraining modification of Type II. |
| IIIA | High Early Strength-Air Entraining | An air-entraining modification of Type III. |
| I | Normal | General-purpose cement suitable for most purposes. |
| II | Moderate Sulfate Resistance | Used as a precaution against moderate sulfate attack. It will usually generate less heat at a slower rate than Type I cement. |
| V | High Sulfate Resistance | Used as a precaution against severe sulfate action – principally where soils or groundwaters have a high sulfate content. It gains strength at a slower rate than Type I cement. High sulfate resistance is attributable to low C3A content. |
| III | High Early Strength | Used when high early strength is needed. It is has more C3S than Type I cement and has been ground finer to provide a higher surface-to-volume ratio, both of which speed hydration. Strength gain is double that of Type I cement in the first 24 hours. |
| IV | Low Heat of Hydration | Used when hydration heat must be minimized in large volume applications such as gravity dams. Contains about half the C3S and C3A and double the C2S of Type I cement.                       |
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