Product Data Sheet Show all documents

Sika® ViscoCrete® ACE 456 BH

(former MGlenium ACE 456BH)

Water reducing and retarding superplasticizing admixture for concrete

Sika® ViscoCrete® ACE 456 BH is a third generation polycarboxylate based superplasticizer for concrete. It has been particularly developed for use in ready mix and precast concrete production to give extended slump retention and high early strength development of concrete mixes. Sika® ViscoCrete® ACE 456 BH is suitable for use in concrete mixes containing microsilica and other pozzolanic materials such as GGBS and fly ash.
Suitable for use in hot and tropical climatic conditions.

Sika® ViscoCrete® ACE 456 BH acts by surface adsorption on the cement particles producing sterical hindrance as well as electrostatic repulsion between cement particles which results in higher dispersion, flow and retention.
Sika® ViscoCrete® ACE 456 BH provides the following beneficial properties:
  • Increased working time
  • Early strength development resulting in economic stripping time for pre-cast and in cast-situe concrete
  • High water reduction resulting in high density, high strength and reduced water permeability
  • Excellent plasticizing effect giving improved flowability, placing and compaction behavior
  • Improved surface finish
  • Better shrinkage and creep behaviour
  • Low risk of segregation
  • Reduces energy costs for steam cured pre-cast elements
  • Does not contain chlorides or other steel corrosion promoting ingredient
  • Sika® ViscoCrete® ACE 456 BH may be used in combination with Sika® Stabilizer. The technology produces advanced self-compacting concrete, without the aid of vibration. For economic, ecological and ergonomic ready-mix concrete production.
Product Data Sheet Show all documents

Usage

  • Precast concrete structures in general
  • Precast concrete tunnel segments
  • Pre-stressed concrete elements
  • Post-tensioned concrete bridge segments
  • Fiber Reinforced Concrete (FRC) containing steel, synthetic and or polypropylene fibers
  • Low w/b ratio concrete requiring high workability, slump retention and high early strength development
  • Self Compacting Concrete
 

Advantages

Sika® ViscoCrete® ACE 456 BH acts by surface adsorption on the cement particles producing sterical hindrance as well as electrostatic repulsion between cement particles which results in higher dispersion, flow and retention.
Sika® ViscoCrete® ACE 456 BH provides the following beneficial properties:
  • Increased working time
  • Early strength development resulting in economic stripping time for pre-cast and in cast-situe concrete
  • High water reduction resulting in high density, high strength and reduced water permeability
  • Excellent plasticizing effect giving improved flowability, placing and compaction behavior
  • Improved surface finish
  • Better shrinkage and creep behaviour
  • Low risk of segregation
  • Reduces energy costs for steam cured pre-cast elements
  • Does not contain chlorides or other steel corrosion promoting ingredient
  • Sika® ViscoCrete® ACE 456 BH may be used in combination with Sika® Stabilizer. The technology produces advanced self-compacting concrete, without the aid of vibration. For economic, ecological and ergonomic ready-mix concrete production.

Packaging

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

Colour

Clear liquid

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Sika® ViscoCrete® ACE 456 BH follows the requirements of ASTM C494; Type F and EN 934-2

 
Product Information

Composition

Aqueous solution of modified polycarboxylates, co-polymers

Shelf life

12 months from date of production if stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +50°C. Mix well before using.

Density

~1.08 kg/l (+25°C)

Total chloride ion content

Nil

(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® ACE 456 BH 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

Dispensing

Sika® ViscoCrete® ACE 456 BH is a ready-to-use admixture to be added to the concrete as a separate component. Optimal result is obtained if Sika® ViscoCrete® ACE 456 BH 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.

Compatibility

Sika® ViscoCrete® ACE 456 BH 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® ACE 456 BH with the above products or other admixtures. Please consult our Sika Technical Department.

 
Consumption

Recommended dosage

0.8 - 1.5 % by weight of binder
Other dosages by weight of binder can be used depending on the mix design, raw materials, climatic conditions and concrete requirements. Trial mixes must be performed to establish the exact dosage rate required.

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