BT-302 Polycarboxylate Superplasticizer
High Slump Retention, Solid Concentration 50%
Product Introduction
BT-302 is an innovative, fast-acting polycarboxylate superplasticizer designed for exceptional slump retention. Crafted as a premium mother liquor from TPEG through advanced free radical polymerization, it introduces a novel sustained-release group, enhancing synthesis performance. In the alkaline environment of concrete, the intelligently engineered slow-releasing group within this compound gradually unveils dispersive functionalities, continuously dispersing cement particles. This proactive mechanism effectively inhibits concrete slump loss,making it indispensable for high-performance applications. It offers a low water reduction rate, yet boasts extraordinary slump protection capabilities..This product is typically combined with a water-reducing mother liquor, catering mainly to high-strength concrete demands with elevated slump protection standards. Its usage extends widely across pumping concrete, super-flow self-compacting, high-strength concrete, and commercial concrete, finding essential roles in elite constructions like high-speed railways, expressways, hydroelectric, and other massive engineering domains.
Main Features
*The slow-release mother liquor is a faster acting PCE mother liquor.
The release timing typically occurs after 30 minutes, although it can vary based on specific materials.
*Remarkable slump retention performance ensures concrete slump remains stable for up to 2 hours without significant loss.
*Due to its low water reduction rate, it is generally not used independently and should be integrated with a water reduction mother liquor.
*Boasting low viscosity and thixotropic characteristics, it is ideal for concrete with minimal water-cement ratios.
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 within 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 |
Application
1. Perfectly suited for the formulation of early strength, retarded, precast, cast-in-place, flow, self-compacting, mass, high-performance, and clear concretes. It serves industrial and civil building needs in premixed cast-in-place concretes, especially beneficial for lower-grade commercial concretes.
2. Its versatility makes it ideal for prominent public projects like high-speed railways, nuclear power plants, water conservation, hydro-power constructions, subways, grand bridges, expressways, and ports, playing a critical role in national large and priority developments.
3. It is also suitable for diverse industrial and civil construction sites and commercial concrete mixing stations.
How to Use
1. This product is available as a colorless or pale yellow liquid. Dosage: Typically,utilize 0-30% mother liquor alongside a water-reducing mother liquor, blending with additional minor ingredients to create a water-reducing agent. The optimal dosage for this agent is usually between 1% and 3% of the total weight of cementitiousmaterials.
2.Prior to product usage or when altering the type or batch of cement and gravel, it's crucial to conduct adaptability tests with these constituents. Based on the results, determine the precise proportion of water-reducing agent needed.
3.While this product can be used independently, it is generally recommended to combine it due to its low water reduction rate. This innovative product is versatile; it can be seamlessly combined with water-reducing mother liquor to enhance its performance. Its unique set retarding capabilities allow it to effectively reduce slump loss in concrete. It can also be expertly mixed with functional aids, making it possible to develop admixtures with specialized properties such as retarder, early strength, antifreeze, and pumping functionalities. For optimal results, the application method and conditions should be precisely determined through rigorous testing and compounding technology.
4.This exceptional product is compatible with various admixtures, including early strength agents, air-entrainment agents, and retarders. It is essential to conduct tests before use, and it must not be mixed with naphthalene series water reducers to ensure maximum efficacy.
5.The selection of concrete cement and mix ratio requires careful testing. When in use, it is crucial to mix and measure water accurately or add it to the concrete mixer simultaneously. Conduct mixing tests beforehand to guarantee the superior quality of the concrete.
6.When incorporating active admixtures like fly ash and slag, calculate the water-reducing agent based on the total amount of cementitious materials to ensure perfect consistency.
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