FC-R31S Polymer high-temperature retarder
• FC-R31S is a type of polymer high-temperature retarder.
• FC-R31S can effectively extend the thickening time of cement slurry, with strong regularity, and has no impact on other properties of cement slurry.
• FC-R31S develops rapidly on the strength of set cement, and does not exceed the retarding of the top of isolation interval.
• FC-R31S is applicable to slurry preparation of fresh water, salt water and sea water.
FC-R31S decreases the rate of cement hydration, acting in a manner opposite to that of accelerators. They are used at High Temperatures to allow time for mixing and placement of the Cement Slurry.
| Product | Group | Component | Range |
| FC-R31S | Retarder HT | AMPS polymer | 93℃-230℃ |
| Item | Index |
| Appearance | White or yellowish solid |
| Item | Test condition | Index | |
| Thickening performance | Initial consistency, (Bc) | 150℃/73min, 94.4MPa | ≤31 |
| 40-100Bc transition time | ≤40 | ||
| Adjustability of thickening time | Adjustable | ||
| Thickening linearity | ≤10 | ||
| Free liquid (%) | 150℃/73min, 94.4MPa | ≤1.4 | |
| 24h compressive strength (MPa) | 150℃, 20.7MPa | ≥14 | |
| Grade G cement 600g; Silicon powder 210g; Fresh water 319g; FC-610S 12g; FC-R31S 4.5g; Defoamer FC-D15L 2g | |||
Retarders are used to counteract the accelerated effect of high temperatures on establishing the properties of concrete in hot climates. Retarders are a mixture that slows down the chemical process of hydration so that the concrete remains pliable and usable for a long time. Retarder can successfully extend the period that cement slurry thickens in order to guarantee a successful cementing procedure. The FC-R20L, FC-R30S, and FC-R31S series are available from Foring Chemicals for use in various applications.
