BT-302 Polycarboxylate Superplasticizer
High Slump Retention Solid 50%
Product Introduction
BT-302 represents the cutting-edge in fast-releasing technology, designed to offer unparalleled slump retention. Effortlessly maintaining slump, this innovative mother liquor is derived from TPEG utilizing advanced free radical polymerization techniques. A novel sustained-release group is intricately woven into its synthesis,enhancing its functionality. In the alkaline environment of concrete, this product's molecular structure gradually liberates a dispersive group, continuously dispersing cement and effectively preventing concrete slump loss.This ensures optimal performance with a low water reduction rate, while excelling in slump protection, offering exceptional retention capabilities.Thus,when paired with water-reducing mother liquor, it becomes indispensable for high-strength concrete projects demanding superior slump protection. Widely used in applications such as pumping concrete, super-flow self-compacting, and high-strength high-performance concrete, it is vital for commercial concrete used in high-speed railways, expressways, and hydro-power projects, as well as other large-scale engineering endeavors.
Main Features
*Compared to faster-releasing PCE mother liquor, the slow-release mother liquor offers a strategic delay,
typically activating after 30 minutes, though this may vary with materials.
*Boasting ultra-high slump performance, it maintains concrete slump for 2 hours without loss.
*Due to its low water reduction rate, it is generally paired with a water-reducing mother liquor for optimal results.
*Exhibiting low viscosity and thixotropy, it is perfectly suited for concrete applications with a low water-cement ratio.
Typical Characteristics
| Test Item |
Specification |
| Appearance |
Colorless or light yellow liquid |
| Density(g*cm3) |
1.02-1.05 |
| PH Value |
6-8 |
| Solid Contents |
50%±1 |
| Cement slurry fluidity MM |
270mm per Hour |
Physical Properties of Concrete
| Test item |
Specification |
| Water reducing Rate |
5% |
| bleeding rate ratio |
0% |
| Pressure bleeding rate |
30% |
| Air Content |
3% |
| (30min)Slump retention mm |
200mm |
| (60min)Slump retention |
170mm |
| 3D Compressive strength ratio |
190MPa |
| 7D Compressive strength ratio |
170MPa |
| 28D Compressive strength ratio |
150Mpa |
Applications
1. Ideal for early-strength concrete, retarded concrete, precast concrete, cast-in-place concrete, flow concrete, self-compacting concrete, mass concrete, high-performance concrete, and clear concrete. It serves various industrial and civil buildings in premix and cast-in-place concrete, especially valuable for low-grade commercial concrete.
2. Its versatility makes it applicable to high-speed railways, nuclear power, water conservancy and hydro-power projects, subways, large bridges, expressways, harbors, and wharves, as well as other national large and key projects.
3. Suitable for a broad range of industrial and civil construction applications, and indispensable for commercial concrete mixing stations.
Usage Instructions
1. This product appears as a colorless or light yellow liquid. Dosage: Typically,employ 0-30% mother liquor in conjunction with a reducing water mother liquor, mixing with other materials to create a water-reducing agent. The agent's dosage should generally comprise 1%~3% of the total weight of cementing materials.
2.Before utilizing this product or switching cement and gravel types or batches, it's crucial to conduct adaptability tests. These tests help determine the ideal proportion of the water-reducing agent.
3.While this product can be used alone (though typically it's not advised), This innovative additive can be seamlessly blended with water-reducing mother liquor, as well as set retarding mother liquor, effectively minimizing concrete slump loss. Additionally, it can be compounded with specialized aids to create admixtures providing remarkable retarder, early strength, antifreeze, and pumping capabilities,ensuring superior performance. It's crucial that the application method and conditions are determined through comprehensive testing and sophisticated compounding technologyfor optimal results.
4.This versatile product is compatible with a variety of admixtures, including early strength agents, air entrainment agents, and retarders. However, it is essential to conduct preliminary tests before use and avoid mixing with naphthalene series water reducers for best outcomes.
5.Concrete cement and mix ratio must be precisely determined through rigorous testing. During application, ensure that the combined and measured water is added simultaneously with other components in the concrete mixer. Conduct thorough mixing tests beforehand to secure the desired concretequality.
6.In scenarios where active admixtures like fly ash and slag are used in the concrete mix, calculate the water-reducing agent as part of the overall cementing material to maintain optimal consistency.
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