Product Data Sheet Show all documents

Sika® Plastiment® RMC 4

High performance retarding plasticiser for concrete

Sika® Plastiment® RMC 4 is a high-performance plasticising retarder, beneficial in maintaining workability especially in high ambient temperatures. Suitable for use in hot and tropical climatic conditions. 

  • Reduces segregation and bleeding Improves cohesion, workability and compactability in concrete using poorly graded/shaped fine aggregates. 
  • Reduces placing problems in hot weather by improved workability and workability retention in conjunction with extended setting times 
  • Improves surface finish 
  • Improves trowellability 
  • Reduces honeycombing / cold joint effects 
  • Improves pumpability of concrete.
  • Reduces effects of various modes of attack on concrete and embedded steel by considerable reduction in permeability.
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Product Data Sheet Show all documents

Usage

  • Ready mixed concrete where high workability retention and retardation are highly required. 
  • Pre-cast concrete 
  • Hot weather concreting of all types.
  • Reduction in permeability, reducing effect of groundwater salts on concrete and steel.
  • To improve cohesion, workability and compactability in concretes
 

Advantages

  • Reduces segregation and bleeding Improves cohesion, workability and compactability in concrete using poorly graded/shaped fine aggregates. 
  • Reduces placing problems in hot weather by improved workability and workability retention in conjunction with extended setting times 
  • Improves surface finish 
  • Improves trowellability 
  • Reduces honeycombing / cold joint effects 
  • Improves pumpability of concrete.
  • Reduces effects of various modes of attack on concrete and embedded steel by considerable reduction in permeability.

Packaging

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

Colour

Dark brown liquid 

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Sika® Plastiment® RMC 4 follows the requirements of ASTM C494; Types A, B and D and BS EN 934-2 
Product Information

Composition

High molecular weight refined lignosulphonates and synthetic retarders

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 +45°C. Mix well before use.

Density

~1.14 kg/l (+25°C)

Total chloride ion content

Nil 

(EN 934-2)

Freezing point

0°C

 
Technical Information

Concreting guidance

The standard rules of good concreting practice for production and placing must be observed when using Sika® Plastiment® RMC 4 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® Plastiment® RMC 4 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:

  • Sikament® 
  • SikaPump® 
  • Sika®FerroGard® 
  • SikaFume® 
  • SikaFiber®
  • Sika® Aer
  • Sika® Stabilizer
  • SikaControl®

We recommend for trial mixes to be performed to establish the required performance when combining Sika® Plastiment® RMC 4 with the above products or other admixtures. Please consult our Sika Technical Department for further assistance.

Dispensing

Sika® Plastiment® RMC 4 is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant. Do not add Sika® Plastiment® RMC 4 directly to the dry mix. 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.
Consumption

Recommended dosage

0.2 - 0.6 % by weight of binder. Other dosages shall be used depending on the mix design, raw materials, climatic conditions and concrete requirements. Trial mixes must be performed to establish the appropriate dosage.

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