1. Product Introduction
This product is non-toxic, chlorine-free and non-flammable. Using this product can delay the setting time of concrete and mortar, thereby significantly reducing the initial hydration heat of concrete and delaying the occurrence of heat peaks. Successfully Solve the heat dissipation and intermediate connection problems in hot seasons and high-temperature parts of concrete. This product also has a certain plasticizing effect, which can improve the workability of fresh concrete, facilitate construction, and ensure adequate maintenance.
2. Scope of application
This product is suitable for the preparation of large volume concrete, commercial concrete, pumped concrete, port construction and hydraulic concrete, large formwork slip form construction concrete and other occasions.
3. Implementation standards: Comply with GB8076-1997 retarder standard.
4. Reference dosage
The commonly used dosage of this product is 0.6-1.0% of the cement dosage. Before construction, the best dosage should be selected based on the specific requirements.
V. Technical performance and use:
1. This product has a significant retarding effect. After use, the strength of the concrete at 1-3 days will be slightly lower than that of the benchmark concrete, but the strength at other ages will reach the same level. Exceeds benchmark concrete. This product is an off-white powder and the liquid is light brown.
2. The setting time of this concrete can be extended by 2-15 hours, and the specific dosage can be adjusted according to construction requirements. This product is mixed into the concrete together with the mixing water, and the mixing time is appropriately extended to make it uniform. This product is compatible with other types of admixtures. However, for cements that use anhydrite and fluorogypsum as setting agents, a concrete adaptability test must be conducted and can only be used when they are adapted. Where construction joints are to be left, apply a retarder on the concrete surface within 0.5-1 hour after the concrete is poured. The retarder can delay the approximately 5mm thick concrete on the surface of the construction joints for about 24 hours. After the concrete is finally set, use water with a certain pressure to wash away the unsolidified slurry layer on the surface, and the concrete aggregate will be exposed, so that the surface of the construction joint will be exposed with a uniform rough surface. The construction joint treated in this way will be different from the second pouring. Concrete bonds very well.
6. Packaging and storage:
This product is packed in a woven bag lined with film, and the liquid is packed in an iron drum. The weights are 50kg and 200kg respectively. Please be careful to avoid moisture and exposure during the shelf life. It can only be used after passing the test after the expiry date. </p
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