Sika ViscoCrete-325 C High-performance superplasticizer/water reducer
APPEARANCE :COLOURS Slight yellow powder
CHEMICAL BASE : Modified polycarboxylates
DENSITY :0.50~0.70 g/cm3(bulk density)
PH VALUE: 10.0~13.0（at +23 ℃, 40 % solution)
TOTAL CHLORIDE ION CONTENT % w/w : ≤0.1%
EQUIVALENT SODIUM OXIDE AS % Na2O : ≤7.0%
Please feel free to contact me for more details :
CONTACT : JOYCE
TEL:+86-18795982484
EMAIL:joyce@yaojietech.com
CHEMICAL BASE : Modified polycarboxylates
DENSITY :0.50~0.70 g/cm3(bulk density)
PH VALUE: 10.0~13.0（at +23 ℃, 40 % solution)
TOTAL CHLORIDE ION CONTENT % w/w : ≤0.1%
EQUIVALENT SODIUM OXIDE AS % Na2O : ≤7.0%
Please feel free to contact me for more details :
CONTACT : JOYCE
TEL:+86-18795982484
EMAIL:joyce@yaojietech.com
Sika®ViscoCrete®-325 C is a high-performance superplasticizer and water reducer in powder form based on Sika®ViscoCrete® polycarboxylate polymer technology.
USES
Sika®ViscoCrete®-325 C is formulated for applications in systems with high
calcium sulfate content or pure gypsum binders. The product is especially
suitable for the production of dry-mixed mortars and concrete for applications
like:
▪ Floor screeds, self-leveling screeds and underlayments
▪ Grouts, non-shrink grouts, repair mortars, tile adhesives
▪ Building plaster, render, stucco, bonding/filling compound, molding plaster,
dental & medical plaster
Sika®ViscoCrete®-325 C can be used in the following binder systems:
▪ Calcium sulfate binders (α- and β-hemihydrate,
natural/thermal/syntheticanhydrite)
▪ Ternary compounds (Portland cement + calcium aluminate cement +
calcium sulfate)
▪ Portland cement and cement blends
CHARACTERISTICS / ADVANTAGES
Sika® ViscoCrete®, Sika’s polycarboxylate technology, works based on a
combination of electrostatic forces and steric repulsion effects. Thus, solid
particles can be effectively dispersed.
The benefits of Sika® ViscoCrete®-325 C include, but are not limited to the
following:
▪ High water reduction (resulting in high density and strength)
▪ Excellent flowability (resulting in highly reduced placing- and compacting
efforts)
▪ Increased early strength development
▪ Improved shrinkage and creep behavior
▪ Reduced mixing times due to rapid adsorption
▪ Long-term stability enables long slump life
▪ Low influence on hydration, thus low activator/accelerator consumption
▪ Efficiency over a wide pH-range
▪ Compatible with other additives, e.g. citric acid
▪ Free of formaldehyde (unlike SNF/SMF) and ammonia
CONSUMPTION / DOSAGE
Dosage rate varies depending on the application and due to variations in drymix
composition. A typical dosage range is 0.05 - 0.5 % by weight of binder. At high
dosage bleeding and/or segregation may occur as well as retardation of setting.
DISPENSING
Sika®ViscoCrete®-325 C is added to the dry mix. For optimal utilization we
recommend a minimal wet mixing time of 30 seconds for mortar.
COMPATIBILITY
Sika®ViscoCrete®-325 C may be combined with many other Sika products as well
as with most existing activators/accelerators, retarders, redispersible powders,
stabilizers and other additives used in dry-mix applications. In combination i.e.
with other Sika ViscoCrete Powders and Retardan improvements in flowability
and setting-time adjustment may be achieved.
HEALTH AND SAFETY INFORMATION
For information and advice on the safe handling, storage and disposal of
chemical products, users shall refer to the most recent Material Safety Data
Sheet containing physical, ecological, toxicological and other safety-related data.
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