Sika® ViscoCrete® ACE 8115

HIGH RANGE WATER REDUCER ADMIXTURE

Sika® ViscoCrete® ACE 8115 is a high range water reducing admixture, based on chains of modified polycarboxlylate ether technology. The chemistry of cement dispersion based on polymers, are absorbed by the cement granules. They wrap around the granules surface areas at the very early stage of the concrete mixing process. The sulphonic groups of the polymer chains increase the negative charge of the cement particle surface and disperse these particles by electrical repulsion. This electrostatic mechanism causes the cement paste to disperse and has the positive consequence of requiring less mixing water to obtain a given concrete workability. Hydration however starts as soon as the cement particles get in contact with mixing water. The rapid growth of hydration crystals will change the surface mechanical of the particles and thus of set the free dispersion of them. At the beginning of the mixing process it initiates the same electrostatic dispersion mechanism as the traditional high range water reducing, but the side chains linked to the polymer backbone generate a steric hindrance, which greatly stabilize the cement particles ability to separate and disperse.   With this process, flowable concrete with greatly reduced water content is obtained. The mechanism allows obtaining, compared to traditional high range water reducing admixtures, considerably reduction of mixing water content and higher early strengths.

  • Superplasticizing effect for high slump retention.
  • Dramatic reduction in water requirement at equal slump.
  • Improved workability at equal water content com-pared to a non-treated mix.
  • Reduced permeability.
  • Increased durability.
  • Increase strength in early ages.
  • Low shrinkage.
  • Superior cohesion No segregation even at high workability.
  • Early demoulding.
Product Data Sheet Show all documents

Overview

Usage

  • Precast concrete
  • All types of concrete mixes in which high early strength or high ultimate strength

Advantages

  • Superplasticizing effect for high slump retention.
  • Dramatic reduction in water requirement at equal slump.
  • Improved workability at equal water content com-pared to a non-treated mix.
  • Reduced permeability.
  • Increased durability.
  • Increase strength in early ages.
  • Low shrinkage.
  • Superior cohesion No segregation even at high workability.
  • Early demoulding.

Packaging

205 L drums (non-returnable)

1 000 L bulk delivery

Product Details

Composition

Modified aqueous solution of modified polycarboxylate copolymers

Shelf life

12 months from date of production if stored properly in undamaged, unopened, original sealed packaging.

Storage conditions

Store in dry conditions at temperatures between +10 °C and +35 °C. Protect from direct sunlight and frost.

 

Concreting guidance

The standard rules of good concreting practice, concerning production and placing, are to be followed.

Laboratory trials before concreting on site are strongly recommended when using a new mix design or producing new concrete components. Fresh concrete must be cured properly and as early as possible.

Application

Compatibility

Sika® ViscoCrete® ACE 8115 may be combined with the following products:

  • Sika® Plastiment® Series
  • Sika Viscoflow® Series
  • SikaFume®
  • SikaFiber®

Do not use viscocrete or viscoflow series combined with sikament series.

To produce flowing and or self-compacting concrete, special concrete mix design is required.

Pre-trials are recommended and mandatory if combinations with the above products are required.

Please consult to our Technical Service Department.

DISPENSING

Sika® ViscoCrete® ACE 8115 is a ready-to-use admixture to be added to the concrete mix. Optimal mixing is obtained if Sika® ViscoCrete® ACE 8115 is poured into the concrete mix right after the addition of the first 80% of the mixing water. Avoid adding the admixture to the dry aggregates. A separate dispenser and feed line must be used.

 

Recommended dosage

0.5 – 2.0 L per 100 Kg of cementitious.

Other dosages may also be used depending on the specific working conditions. Trial mixes should be made with job materials to determine the optimum dosage required for a specified job requirement.

Documents