ViscoCrete 540P
Sika ViscoCrete® 540P is a powdery polycarboxylate water reducer applicable to various cement and gypsum based mortars. The adaptability and undulation resistance to cementitious materials of different type and locality are far better than that of ordinary polycarboxylate water reducer.
Advantages
·Superior toleration on water-soluble alkali metal sulphate salt
·Adaptability to cement with various tricalcium aluminate (C3A) content and other composite cementitious systems
·High early strength, long-time fluidity maintaining
·Rapid dispersion and adsorption, shortening mixing time
·Free of uncombined formaldehyde and ammonia (different from naphthalene / melamine water reducer)
Technical parameters
Chemical component | Modified polycarboxylate |
Appearance | White to light yellow powder |
Bulk density | 400 - 600 kg/m³ |
pH（23 ℃，40 %solution） | 9.0 - 12.0 |
Total chloride ion content | ≤ 0.1 % |
Alkali content | ≤ 3.0 % |
Applications
> Cement and gypsum based self-levelling mortar
> Waterproofing mortar and ceramic tile adhesive
> Non-shrink grout and repair mortar
> Mould and medical gypsum
Recommended dosage
The dosage need to be adjusted according to specific usage and the components in mortar. Generally, the dosage is about 0.05 - 0.5 % the weight of total cementitious materials. At high dosage, the slurry may tend to bleed or separate, and the setting time might be prolonged.