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Sikament® RB 858

Sikament® RB 858 - Concrete | MCT Chemicals
Sikament® RB 858
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Sikament® RB 858 PK — Dual-Action Superplasticiser & Water-Reducing Concrete Admixture.

Sikament® RB 858 is a highly effective dual-action liquid superplasticiser and water reducer with excellent slump retention. It greatly improves workability, is especially suitable for slender components with densely packed reinforcement, reduces the need for vibration and improves cohesion to reduce segregation.

Sikament® RB 858 - Concrete | MCT Chemicals

Sikament® RB 858 PK

Dual-Action Superplasticiser & Water-Reducing Concrete Admixture

Category:Concrete
Brand:Sika
Dual ActionWorks as a superplasticiser and water reducer.
Improved WorkabilityGreatly improved workability and easy placement.
Water ReductionImpressive water reduction with strength improvement.
Slump RetentionMaintains workability for prolonged periods.
Reduced SegregationImproved cohesion reduces the risk of segregation.
Hot-Climate SuitableFormulated for hot and tropical conditions.
Download Sikament® RB 858 PK Technical Data Sheet (PDF)Request MSDS
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Key Benefits

  • Dual Action
  • Improved Workability
  • Water Reduction
  • Slump Retention
  • Reduced Segregation
  • Hot-Climate Suitable
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Sikament® RB 858 PK – Dual-Action Superplasticiser & Water-Reducing Concrete Admixture

Sikament® RB 858 is a highly effective dual-action liquid superplasticiser and water reducer with excellent slump retention. It greatly improves workability, is especially suitable for slender components with densely packed reinforcement, reduces the need for vibration and improves cohesion to reduce segregation. Suitable for hot and tropical climatic conditions.

Recommended Uses

  • Free-flowing / rheoplastic concrete
  • Slabs, foundations, walls and columns
  • Slender components with dense reinforcement
  • Ready-mixed and pumped concrete
  • Slabs, foundations, walls, columns, piers and piles

Technical Information

Verified performance data for Sikament® RB 858 PK, taken directly from the Sika Pakistan Product Data Sheet.

Chemical Base
Organic polymer blend
Packaging
05 ltr jerry can 20 ltr plastic can 200 ltr drum 1000 ltr IBC Bulk supply in tanker is possible on demand
Appearance / Colour
Dark Brown Liquid
Shelf Life
12 months minimum from production date if stored properly in original unopened packaging
Storage Conditions
The product must be stored properly in undamaged, unopened original sealed packaging in dry conditions at temperatures between +5° C and +35° C. Protect from direct sunlight and frost

Source: Sika Pakistan Material Master (Sikament® RB 858 PK, Art. 821838) for commercial identity; technical data from official Sika Pakistan PDS. Full numerical specifications: request the latest Sika Pakistan PDS.

Packaging & Storage

Packaging

Drums / IBC / bulk (refer to current packaging / price list)

Storage

Store in undamaged, unopened, original sealed packaging in dry conditions, protected from direct sunlight and frost. Refer to the PDS for exact storage temperature and shelf life.

Application Guide (5 Easy Steps)

01
Determine Dosage

Establish the optimum dosage by trial mixes with the actual materials and conditions. Typical dosage ranges are given in the current Sika Pakistan PDS.

02
Dispensing

Add the admixture to the concrete with the mixing water, ideally after most of the water has been added and all solids are wetted. Do not add to dry aggregate or cement.

03
Mixing

Mix thoroughly to fully disperse the admixture and develop workability and water reduction.

04
Placing

Place the high-workability concrete with reduced vibration; ensure formwork is properly secured.

05
Curing

Cure properly, especially at high temperatures, using Sika Antisol products or wet hessian.

Follow the official Sika Technical Data Sheet for full application details.

Frequently Asked Questions

What is Sikament® RB 858?

Dual-Action Superplasticiser & Water-Reducing Concrete Admixture. It disperses cement particles to give high workability, water reduction and slump retention.

What is the dosage?

Determined by trial mixes; typical ranges are given in the current Sika Pakistan PDS.

When is it added?

With the mixing water, after most of the water is added and all solids are wetted; not onto dry cement or aggregate.

Is it suitable for hot climates?

Yes, it is formulated for hot and tropical climatic conditions.

Where are the full technical specifications?

Detailed dosage and density figures are in the current official Sika Pakistan Product Data Sheet, available on request.

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