PDS Sika® ViscoCrete® GL 3191
PDS Sika® ViscoCrete® GL 3191
Product Data Sheet (PDS)
Sika® ViscoCrete® GL 3191 is an innovative latest generation superplasticizer based on polycarboxylic ether (PCE) polymers and is specially engineered for readymix concrete. Sika® ViscoCrete® GL 3191 is differentiated from conventional superplasticisers, such as those based on sulphonated melamine and naphthalene formaldehyde condensates in that it is based on a unique carboxylic ether polymer with long lateral chains. This greatly improves cement dispersion. At the start of the mixing process the same electrostatic dispersion occurs but the presence of the lateral chains, linked to the polymer backbone, generate a steric hindrance which stabilizes the cement particles capacity to separate and disperse. Suitable for use in hot and tropical climatic conditions.
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Sika® ViscoCrete® GL 3191

POLYCARBOXYLIC ETHER BASED SUPERPLASTICIZER FOR THE PRODUCTION OF HIGH-QUALITY READY-MIX CONCRETE

Sika® ViscoCrete® GL 3191 is an innovative latest generation superplasticizer based on polycarboxylic ether (PCE) polymers and is specially engineered for readymix concrete. Sika® ViscoCrete® GL 3191 is differentiated from conventional superplasticisers, such as those based on sulphonated melamine and naphthalene formaldehyde condensates in that it is based on a unique carboxylic ether polymer with long lateral chains. This greatly improves cement dispersion. At the start of the mixing process the same electrostatic dispersion occurs but the presence of the lateral chains, linked to the polymer backbone, generate a steric hindrance which stabilizes the cement particles capacity to separate and disperse. Suitable for use in hot and tropical climatic conditions.

Sika® ViscoCrete® GL 3191 offers the following benefits for: The ready-mix producer:
  • Capability of delivering high performance concrete
  • Production of a concrete with low water cement ratio without loss of workability
  • Single product for many application requirements

The contractor / applicator:
  • Easier placing and faster strength development
  • Improved concrete surface appearance

For the Engineer:
  • Predictable performance
  • Improves quality and durability of concrete
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PDS Sika® ViscoCrete® GL 3191
PDS Sika® ViscoCrete® GL 3191
Product Data Sheet (PDS)
Sika® ViscoCrete® GL 3191 is an innovative latest generation superplasticizer based on polycarboxylic ether (PCE) polymers and is specially engineered for readymix concrete. Sika® ViscoCrete® GL 3191 is differentiated from conventional superplasticisers, such as those based on sulphonated melamine and naphthalene formaldehyde condensates in that it is based on a unique carboxylic ether polymer with long lateral chains. This greatly improves cement dispersion. At the start of the mixing process the same electrostatic dispersion occurs but the presence of the lateral chains, linked to the polymer backbone, generate a steric hindrance which stabilizes the cement particles capacity to separate and disperse. Suitable for use in hot and tropical climatic conditions.
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Usage

Sika® ViscoCrete® GL 3191 is used for the production of high quality early setting ready mix concrete and in Precast industry.  

Advantages

Sika® ViscoCrete® GL 3191 offers the following benefits for: The ready-mix producer:
  • Capability of delivering high performance concrete
  • Production of a concrete with low water cement ratio without loss of workability
  • Single product for many application requirements

The contractor / applicator:
  • Easier placing and faster strength development
  • Improved concrete surface appearance

For the Engineer:
  • Predictable performance
  • Improves quality and durability of concrete

Packaging

210 L drum, 1000 L flowbin or bulk supply in tanker

Colour

Brown colored liquid

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Sika® ViscoCrete® GL 3191 follows the requirements of ASTM C494; Type F&G and BS EN 934-2
Product Information

Composition

Aqueous solution of modified polycarboxylates, co-polymers

Shelf life

12 months from date of production when stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5 °C and +45 °C. Protect from direct sunlight. Mix well before use.

 

Density

~1.08 kg/l (+25 °C)

pH-Value

5.0–8.0

Total chloride ion content

Nil

(BS EN 934-2)
Technical Information

Concreting guidance

The standard rules of good concreting practice for production and placing must be observed when using Sika® ViscoCrete® GL 3191 in concrete. Refer to relevant standards. Fresh concrete must be cured properly especially at high temperatures in order to prevent plastic and drying shrinkage. Use Sika® Antisol® products as a curing agent or apply wet hessian.

Application

Application Information

Compatibility

Sika® ViscoCrete® GL 3191 is suitable for mixes containing all types of cement and supplementary cementitious materials such as: Microsilica
(Silica Fume), Fly Ash (PFA), GGBS (Ground Granulated Blast Furnace Slag) and the following Sika products:
▪ SikaPump®
▪ Sika® FerroGard®
▪ SikaFume®
▪ SikaFiber®
▪ Sika® Aer
▪ Sika® Stabilizer
▪ SikaControl®

We recommend to perform trial mixes to establish the required performance when combining Sika® ViscoCrete® GL 3191 with the above products or other admixtures. Please consult our Sika Technical Department for further assistance.

Dispensing

Sika® ViscoCrete® GL 3191 is a ready-to-use admixture to be added to the concrete as a separate component. Optimal result is obtained if Sika® ViscoCrete® GL 3191 is poured into the concrete mix right after the addition of the first 80 % of the mixing water, i.e. when all solids are wetted. Avoid adding the admixture to the dry aggregates.
Consumption

Recommended dosage

0.4 to 2.5 L per 100 kg of total binder. Trial mixes must be performed to establish the exact dosage rate required.

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