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SikaPlast®-393

WATER-REDUCING AND RETARDING ADMIXTURE FOR CONCRETE

SikaPlast®-393 is a polycarboxylate based superplasticizer developed particularly for use in ready mixed concrete to give extended slump retention and high strength development of high specification grade concrete mixes. SikaPlast®-393 is suitable for use in concrete mixes incorporating pozzolanic materials such as GGBS, PFA and microsilica. Suitable for use in hot and tropical climatic conditions.

SikaPlast®-393 acts by surface adsorption on the cement particles producing steric hindrance and electrostatic repulsion between cement particles which results in higher dispersion, flow and retention.
SikaPlast®-393 provides the following beneficial properties:
  • Powerful plasticising action
  • Production of workable concrete at low w/b ratio
  • Improved shrinkage and creep characteristics
  • Excellent flowability resulting in minimal placing and compacting efforts
  • Slower rate of carbonation ingress
  • Cost effective, structurally economic
  • Higher ultimate strengths allows greater flexibility for engineers to design
  • Reduced surface defects so improving aesthetic appearance
  • Durable concrete
  • Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete structures
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Usage

SikaPlast®-393 is mainly used for the following applications:
  • Production of site mixed and ready mixed concrete
  • High performance / high strength concrete
  • Concrete with low water binder ratio
  • Concrete placing in congested steel reinforcement
  • Depending on dosage rate used; high flow and self compacting concrete (SCC)
  • Concrete requiring retained workability during hot weather production of concrete with extended transportation or placing times
  • Slim elements requiring a high standard of surface finish
 

Advantages

SikaPlast®-393 acts by surface adsorption on the cement particles producing steric hindrance and electrostatic repulsion between cement particles which results in higher dispersion, flow and retention.
SikaPlast®-393 provides the following beneficial properties:
  • Powerful plasticising action
  • Production of workable concrete at low w/b ratio
  • Improved shrinkage and creep characteristics
  • Excellent flowability resulting in minimal placing and compacting efforts
  • Slower rate of carbonation ingress
  • Cost effective, structurally economic
  • Higher ultimate strengths allows greater flexibility for engineers to design
  • Reduced surface defects so improving aesthetic appearance
  • Durable concrete
  • Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete structures

Packaging

1000 L flowbin. Bulk supply in tanker trucks possible on request

Colour

Brown liquid

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

SikaPlast®-393 follows the requirements of ASTM C494; Type G 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 cool and dry conditions in unopened, undamaged and sealed original packaging at temperatures between +5°C and +50°C. Mix well before using.

Density

~1.07 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 SikaPlast®-393 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

SikaPlast®-393 is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant. Do not add SikaPlast®-393 directly to the dry mix.
For optimum utilization of its high water reduction property we recommend thorough mixing at a minimal wet mixing time of 60 seconds. The
addition of the remaining gauging water (to fine tune concrete consistency) may only be started after two-thirds of the wet mixing time to avoid
surplus water in the concrete.

Compatibility

SikaPlast®-393 may be combined with all types of Portland cement (OPC and SRC), concretes containing pozzolanic materials such as; GGBS, PFA, micro-silica 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 SikaPlast®-393 with the above products or other admixtures.
Please consult our Sika Technical Department.
Consumption

Recommended dosage

0.3 – 2 % by weight of binder
Higher 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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