Retarder Used in Reinforced Concrete, Prestressed Concrete, Mass Concrete, Pump Concrete

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Loading Port:
China main port
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Min Order Qty:
10000 kg
Supply Capability:
100000 kg/month

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Product Description:

Ⅰ . Product Description:

NZY-SR retarded type water reducer is composed of high performance and high efficiency water reducer and retarded components, slump retention components, as well as other functional components, with high performance of water reducing, slow slump loss and Concrete hydration temperature rise.

NZY-SR can effectively inhibit the concrete early hydration and without affect the later strength, is ideal concrete admixture for high performance concrete, mass concrete and long-distance transport concrete products.

NZY-SR retarded type water reducer has both liquid and solid package.

Ⅱ. Main technical features

(1) A kind of polyhydroxy organic compound, non-toxic, odorless, non-flammable, and free steel-corrosion effect.

(2) Extend setting time, reduce mixing water (5%-30% water saving).

(3) Extend induction period of cement hydration, slow down hydration rate, delay cement hydration exothermic process.

(4) Improve workability, easy to pour and vibrate.

(5) Increase strength, reduce cement content.


Test Item


Solid Content%

Control value±1


Control value±0.02

pH value


Alkali contentNa2O+0.658K2O)(%


chlorine ion content C%


The fluidity of cementmm


Remark: Base on national standard GB8077-2000For test method of concrete admixtures homogeneity


Test Item

standard request

The factory technical indicators

High performance

High efficient

High performance

High efficient

water-reducing rate%





bleeding rate %





air content%





Setting time differencemin

initial setting





Final setting

1h slump change valuemm




compressive strength rate%











ratio of shrinkage%






Effect on reinforcement corrosion

Remark: Base on national standard  GB8076-2008 Concrete Admixture

. Applications

NZY-SR retarder is used in reinforced concrete, prestressed concrete, mass concrete, pump concrete, road concrete, and waterproof concrete construction projects which require extension of setting time.

NZY-SR retarder is suit for concrete construction in summer or hot weather.

NZY-SR retarder can be used in slip-form concrete construction.

NZY-SR retarder can be used as supplementary materials for produce or remix other concrete admixtures.

Ⅳ. Packaging, transport and storage

(1) Powder retarder is available in 25±0.25kg film-lined bags. Liquid t retarder is available in sealed 200kg or 1000kg bucket. Other special package can also be available according to prior consultation.

(2) Special measures should be taken to ensure entire package. Keep waterproof during transportation.

(3) Dry and well ventilated warehouse is needed for storage. Quality guarantee of retarder is two years under normal conditions. If storage has surpassed the time, test must be done to confirm the validity.

Ⅴ. Health and safety

(1) Once splashed into eyes and skin, wash immediately with plenty of water and seek medical treatment.

(2) Inedible. When eating by mistake, drink sufficient water to urge to vomiting, and then go to hospital.

(3) No littering. Caution should be taken to protect environment.

Ⅵ. Customer services

Data in this manual is only for reference. Technical data about dosage and mix proportion is available if necessary. Professional services in site are also available. More information needed, please direct all inquiries to company.


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