According to Chinese material‑industry standard WB/T 1023‑2005, a retarder is defined as an admixture capable of prolonging the setting time of magnesium‑oxychloride cement products.Main components of concrete retarder are polyhydroxy compounds, hydroxycarboxylates and their derivatives, high‑molecular lignosulfonates. Also known as retarding‑water‑reducing agent for its water‑reducing property. It extends concrete setting time without obvious adverse effect on later‑age strength. Suitable for continuous pouring under high‑temperature conditions, mass concrete, ready‑mixed concrete and pumped concrete.
According to Chinese material‑industry standard WB/T 1023‑2005, a retarder is defined as an admixture capable of prolonging the setting time of magnesium‑oxychloride cement products.
Main components of concrete retarder are polyhydroxy compounds, hydroxycarboxylates and their derivatives, high‑molecular lignosulfonates. Also known as retarding‑water‑reducing agent for its water‑reducing property. It extends concrete setting time without obvious adverse effect on later‑age strength. Suitable for continuous pouring under high‑temperature conditions, mass concrete, ready‑mixed concrete and pumped concrete.
| Item | Index |
|---|---|
| Appearance | Colorless‑to‑pale‑yellow transparent liquid |
| Specific Gravity | ≥1.10 |
| pH (1 % aqueous solution) | 2.5±1.0 |
| Item | Test Index |
|---|---|
| Softening coefficient | 0.55 |
| Fluidity improvement | 8 |
| Initial‑setting time offset | +60 ~ +120 s |
| 7‑day compressive‑strength ratio | 120 % |
| 28‑day compressive‑strength ratio | 120 % |
Normal dosage of concrete retarder: 0.1‑0.6 % by mass of cement.
Packed in plastic drums: 25 kg or 250 kg per drum; customized packages available upon customer requirements. Store indoors in cool shaded place. Shelf‑life: 12 months.
EA‑099 concrete retarder is weakly acidic. Avoid skin and eye contact. Rinse with plenty of clean water in case of contact.
According to Chinese material‑industry standard WB/T 1023‑2005, a retarder is defined as an admixture capable of prolonging the setting time of magnesium‑oxychloride cement products.
Main components of concrete retarder are polyhydroxy compounds, hydroxycarboxylates and their derivatives, high‑molecular lignosulfonates. Also known as retarding‑water‑reducing agent for its water‑reducing property. It extends concrete setting time without obvious adverse effect on later‑age strength. Suitable for continuous pouring under high‑temperature conditions, mass concrete, ready‑mixed concrete and pumped concrete.
| Item | Index |
|---|---|
| Appearance | Colorless‑to‑pale‑yellow transparent liquid |
| Specific Gravity | ≥1.10 |
| pH (1 % aqueous solution) | 2.5±1.0 |
| Item | Test Index |
|---|---|
| Softening coefficient | 0.55 |
| Fluidity improvement | 8 |
| Initial‑setting time offset | +60 ~ +120 s |
| 7‑day compressive‑strength ratio | 120 % |
| 28‑day compressive‑strength ratio | 120 % |
Normal dosage of concrete retarder: 0.1‑0.6 % by mass of cement.
Packed in plastic drums: 25 kg or 250 kg per drum; customized packages available upon customer requirements. Store indoors in cool shaded place. Shelf‑life: 12 months.
EA‑099 concrete retarder is weakly acidic. Avoid skin and eye contact. Rinse with plenty of clean water in case of contact.
