BT-302 Polycarboxylate Superplasticizer
High Slump Retention Solid - 50% Concentrate
Product Introduction
BT-302 is a revolutionary new generation of fast-releasing and slump-retaining mother liquor crafted from TPEG using advanced free radical polymerization techniques. A novel sustained-release group is introduced into the synthesis process,enhancing its unique capabilities. In the alkaline environment of concrete, the slow-releasing groups within the molecular structure of this product gradually release a dispersive agent, which continuously disperses the cement particles. This action effectively inhibits concrete slump loss,ensuring exceptionally low water reduction rates while delivering superior slump protection performancefor extended durations.Commonly used alongside water-reducing mother liquors, this product is predominantly utilized in high-strength concrete applications where superior slump protection is critical. Its versatility ensures widespread use across various projects, including pumping concrete, ultra-fluid self-compacting, high-strength, high-performance concrete, as well as commercial concrete employed in high-speed rail, expressways, hydro-power, and other expansive engineering projects.
Main Features
* The slow-release mother liquor outpaces traditional PCE mother liquors in release speed.
Typically, the release commences at around 30 minutes, though variations may occur depending on the material.
* Demonstrates ultra-high slump performance, maintaining concrete slump for up to 2 hours without loss.
* Due to its low water reduction rate, it is generally not utilized alone and should be paired with a water-reducing mother liquor.
* Its low viscosity and thixotropic properties make it ideally suited for concrete 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. Perfect for early-strength concrete, retarded concrete, precast, cast-in-place, flow, self-compacting, mass, high-performance, and clear concrete. It's invaluable for premix cast-in-place concrete in an array of industrial and civil constructions, particularly low-grade commercial concrete.
2. Widely applicable in national large and key projects such as high-speed railways, nuclear power, water conservancy, hydro-power projects, subways, large bridges, expressways, harbors, and wharves.
3. Suitable for various industrial, civil construction, and commercial concrete mixing stations.
How to Use
1. This product is available as a colorless or light yellow liquid. Dosage: Typically,use 0-30% mother liquor with a water-reducing mother liquor, mixing with other minor materials to formulate a water-reducing agent. The agent's dosage usually comprises 1% ~ 3% of the total weight of cementitious materials.
2.Prior to use, or when altering the type and batch of cement and aggregates, it is crucial to conduct adaptivity tests with the cement and gravel. These tests inform the formulation of the water-reducing agent's proportions.
3.While this product can be used alone, it is generally not recommended to do so. It is best when combined with a water-reducing mother liquor, Set Retarding: This feature ensures that your concrete mix remains workable for an extended period, allowing for seamless project execution and enhanced structural integrity. Mother Liquor: Expertly formulated to significantly minimize concrete slump loss, this component serves as a cornerstone in maintaining optimal consistency and performance. It is perfectly designed to compound with functional Aids: Integrate with state-of-the-art admixture aids that serve multiple purposes. This synergy allows the creation of admixtures imbued with unique functionalities such as retardation, early strength enhancement, antifreeze capability, and superior pumping efficiency.. Ensure Superior Application: The methods and conditions for applying this advanced product should be precisely determined through meticulous testing and compounding technology to achieve unparalleled results..
4.Enhanced Compatibility: This product can be seamlessly integrated with a variety of other admixtures like early strength agents, air entrainment agents, and retarders. Pre-use testing is crucial to ensure compatibility. Note: Avoid using with naphthalene series water reducers to maintain product efficacy.
5.Concrete Optimal Mix Ratio: Carefully determine your cement and mix ratio through comprehensive testing. During use, ensure that mixed and measured water is added simultaneously to the concrete mixer. Conduct thorough mixing tests prior to application to guarantee superior concrete quality.e
6.Holistic Material Calculation: When active admixtures such as fly ash and slag are incorporated into the concrete mix, calculate the water-reducing agent based on the total cementing materials to ensure optimal performance.
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