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Gypsum retarder is an admixture added to gypsum-based materials to extend the working time by delaying the hydration process of hemihydrate gypsum. It is mainly used in various gypsum-based building materials such as plastering gypsum, bonding gypsum, joint filler, gypsum putty, gypsum-based self-leveling compounds, gypsum blocks, gypsum boards, and gypsum plastering mortars.
The core function of gypsum retarder is to control the setting and hardening rate of gypsum slurry, thereby extending the construction working window. Its mechanisms include: reducing the dissolution rate of hemihydrate gypsum, adsorbing retarding ions onto the surface of dihydrate gypsum crystals to form complexes that inhibit crystal growth, or forming a colloidal film on the crystal surface to hinder hydration. With proper addition, the setting time of gypsum can be extended from 5–20 minutes to several hours, meeting various construction requirements.
MIXEON is glad to offer a free sample of our Gypsum retarder for your evaluation.
If our retarder products are of interest to you, simply let us know your specific needs — we’d be happy to help.
MOQ: 1000 kg.
Shipping Coverage: Global (Sea, Railway, Road, Airplane).
Packaging: 25 kg/bag.
Lead Time: 7-15 working days once receive the payment.
Pallets Weight: 600kg/Pallet (24 bags)
Precise setting control: Linear adjustment of setting time at very low dosage to meet various construction needs.
Strength retention: Effectively extends open time while minimizing strength loss of the hardened material.
Excellent flowability: Highly flowable powder, easy to mix and disperse in dry-mix systems, ensures smooth application.
Wide compatibility: Compatible with natural and synthetic gypsums, as well as common mortar admixtures.
Stable performance: Outstanding weather resistance ensures consistent performance across seasons and varying temperature/humidity conditions.
MIXEON is one of the construction additive brands under the KAIMAOXING Group. For nearly two decades, KAIMAOXING has ranked among China's leading cellulose ether producers, serving partners in over 70 countries. We offer high-quality products including HPMC, HEMC, HEC, redispersible polymer powders (RDP), and various functional additives. In recent years, we have continuously expanded our portfolio to include PCE, gypsum retarders, silicone hydrophobic powders (SHP), and defoamers, establishing ourselves as a true one-stop supplier for our customers. Our core strength lies in our customer-centric approach, backed by extensive industry experience, strict quality control, and a reliable supply chain. Committed to innovation and sustainable growth, we strive to be your trusted global partner, creating lasting value for you.
