BT-302 Polycarboxylate superplasticizer
High Slump Retention Solid 50%
Product introduction
BT-302 is a new generation of fast-releasing and slump retaining mother liquor made from TPEG by free radical polymerization, and a new sustained-release group is introduced into the synthesis. Under the alkaline condition of concrete, the slow-releasing group in the molecular structure of this product can slowly release the group with dispersive function, playing the role of continuing to disperse the cement, so as to achieve the role of inhibiting the concrete slump loss.It has a low water reduction rate, but it has very high slump protection performance.Generally used with water reducing mother liquor , It is mainly used in high-strength concrete with higher requirements for slump protection performance, and its products are widely used in pumping concrete, super-flow self-compacting and high-strength high-performance concrete and commercial concrete for high-speed railway, expressway, hydro-power and other large engineering projects.
Main Feature
*The slow-release mother liquor was faster release PCE mother liquor.
The release time is generally after 30min (according to the material that the release time is difference)
*With super high slump performance, can let the concrete slump 2h without loss
*Low water reduction rate is generally not used alone, it needs to be combined with water reduction mother liquor
*With low viscosity and thixotropy, it is more suitable for concrete with 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 |
Application
1. Applicable to the configuration of early strength concrete, retarded concrete, precast concrete, cast-in-place concrete, flow concrete, self-compacting concrete, mass concrete, high-performance concrete and clear concrete, all kinds of industrial and civil buildings in the premix cast-in-place concrete, especially for low-grade commercial concrete.
2. It can be widely used in high-speed railways, nuclear power, water conservancy and hydro-power projects, subways, large Bridges, expressways, harbors and wharves and other national large and key projects.
3.Applicable to all kinds of industrial and civil construction and commercial concrete mixing stations.
How to use
1. This product is a colorless or light yellow liquid. Dosage:Usually ,use 0-30% mother liquor with reducing water mother liquor, and mix other small materials to make water reducing agent. The dosage of water-reducing agent is generally 1% ~ 3% of the total weight of cementing materials.
2.Before use of this product or changing the type and batch of cement and gravel, it is necessary to carry out adaptability test with cement and gravel. According to the test, formulate the proportion of water reducing agent
3.This product can be single used(Usually it could not use in single) It can be combined with water-reducing mother liquor and Set Retarding Utilize the mother liquor to effectively reduce the slump loss of concrete. Alternatively, it can be compounded with functional aids to craft admixtures with added benefits such as retarder, early strength enhancement, antifreeze properties, and pumping efficiency.. It is crucial to determine the optimal application method and conditions through meticulous testing and compounding technology..
4.This versatile product can be seamlessly integrated with other admixtures, including early strength agents, air entrainment agents, and retarders. However, it is imperative to conduct thorough tests prior to use. Please ensure it is not mixed with naphthalene series water reducers.
5.Concrete cement and mix ratio should be diligently determined by precise testing. During application, ensure the mixed and measured water is added simultaneously to the concrete mixer. Always conduct a mixing test beforehand to maintain the highest quality of the concrete.
6.When utilizing active admixtures such as fly ash and slag in the concrete mix, calculate the water-reducing agent based on the total amount of cementing materials.
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