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Ready-mix plants supplying high-strength, pumped or long-haul concrete need a superplasticiser that holds slump, cuts water and works with GGBS, fly ash or microsilica. Durability admixtures cover corrosion and air entrainment where the specification asks for them.
General guidance based on the manufacturer data sheets. Site conditions differ: confirm the system with MCT before you start. Where we do not name a product, ask us and we will confirm the right one.
Agree the grade, slump at site, haul time and binder blend with the client. A mix design for the local materials and trial mixes are required before production (Sika ViscoCrete-3288 PK p.2; SikaPlast-400 PK p.2).
Polycarboxylate superplasticisers give extended slump retention and high strength and suit mixes with GGBS, PFA and microsilica (Sika ViscoCrete-3110 PK p.1; SikaPlast-400 PK p.1). Guide dosages: ViscoCrete-3110 PK 0.2–0.4 % of binder for plastic and 0.4–1.5 % for flowing concrete (p.2); SikaPlast-400 PK 0.8–1.6 % (p.2); ViscoCrete-3288 PK 0.2–1.5 % (p.2).
Production of site mixed and ready-mix concrete During hot weather production of concrete with extended transportation or placing times Concrete with low water / cement ratio Concrete placement in congested steel reinforcement Self-compacting concrete Slim … (TDS p.1)
Ready mixed concrete High flow concret High strength concrete Slabs Foundations Walls Columns and piers Piles Pre-stressed concrete Bridges and cantilever structures (TDS p.1)
Production of site mixed During hot weather production of concrete with extended transportation or placing times Concrete with low water / cement ratio Concrete placement in congested steel reinforcement Self-compacting concrete Slim elements requiring a hi… (TDS p.1)
Sikament RB 850 PK starts at 0.8–2.0 L per 100 kg cementitious material in normal concrete and 1.5–3.0 L in microsilica concrete (p.2). Sikament RB 858 PK is used the same way at 1.5–2.5 L for microsilica concrete (p.2). These are concrete admixtures, not the SikaCeram-850 tile grout.
Microsilica concrete Mass concrete pours Ready mixed concrete Long-distance transport Pumped concrete Casting in hot climates To obtain Reduced thermal peaks High workability for longer periods Lower pumping pressure Delayed setting with longer workability … (TDS p.1)
Primary Uses Microslica concrete Mass Concrete Ready Mix Concrete Long-distance Concrete Pumped concrete Casting in hot climate To Obtain Reduced thermal peaks High workability for longer periods Lower pumping pressure Delayed setting for longer workability… (TDS p.1)
Sika Pump improves the pumpability of mixes with variable fines, low cement or poor grading (p.1). About 0.2–0.4 % of cement increases cohesion; the exact dosage must be set by preliminary testing (p.2).
Concrete mixes with variable fines, a low cement content or a poor particle size distribution (granulometry) which tend to segregate when pumped and/or create very high pump pressures. (TDS p.1)
For marine, parking and industrial exposure, Sika FerroGard CI 222 is dosed at 5 L/m³ and does not change slump (p.2). Where the specification calls for entrained air, SikaControl-720 AER is dosed at 40–400 ml per 100 kg cementitious, starting at 100 ml (p.2). Entrained air lowers strength, which is offset with a plasticiser (Sika AER PK p.2).
Sika® FerroGard® CI 222 typical uses: Concrete bridges, highways and pavements exposed to de-icing salts, Concrete marine structures operating in chloride environments, Concrete tunnels, infrastructure or retaining walls, Concrete in industrial plants where corrosive substances are present, Concr… (TDS p.1)
Entraining controlled air content in a wide range of concrete types: Low slump concrete, Flowable concrete, High-temperature concrete, Concrete with extended working times, Lightweight and pre-stressed concrete, Imparting workability to lean harsh mixes. (TDS p.1)
Add the admixture with the gauging water, never to the dry mix, and wet mix for at least 60 seconds (SikaPlast-400 PK p.2). Secure formwork for the extended workability (p.2). Cure properly, especially in heat, with a curing compound or wet hessian (p.2).
The right product here depends on your site. We confirm it before naming it.
A starting point for a site proposal. Quantities, prices and the final specification follow a site visit or photos.
| Step | Product | Pack | Source |
|---|---|---|---|
| 2. Select the superplasticiser | Sika ViscoCrete-3110 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 02.01 |
| 2. Select the superplasticiser | SikaPlast-400 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 02.01 |
| 2. Select the superplasticiser | Sika ViscoCrete-3288 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 02.01 |
| 3. Microsilica and high-performance mixes | Sikament RB 850 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 04.03 |
| 3. Microsilica and high-performance mixes | Sikament RB 858 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 03.01 |
| 4. Help difficult mixes pump | Sika Pump | — | TDS p.1 · July 2021, Version 02.01 |
| 5. Add durability admixtures where specified | Sika FerroGard CI 222 | 05 ltr jerry can 20 ltr plastic can 200 ltr drum 1000 ltr IBC Bulk supply in tanker is… | TDS p.1 · February 2026, Version 02.02 |
| 5. Add durability admixtures where specified | SikaControl-720 AER | 05 ltr jerry can 20 ltr plastic can 200 ltr drum 1000 ltr IBC Bulk supply in tanker is… | TDS p.1 · May 2025, Version 02.01 |
A slump-retaining type made for hot climates, such as Sika ViscoCrete-3110 PK, which is listed for hot-weather production with extended transport (p.1). Confirm the dosage in a trial with your cement (p.2).
Yes. SikaPlast-400 PK and ViscoCrete-3110 PK are suitable for mixes with GGBS, PFA and microsilica (SikaPlast-400 PK p.1; Sika ViscoCrete-3110 PK p.1).
Accidental overdose causes bleeding, segregation and delayed initial set (Sika ViscoCrete-3288 PK p.3). If setting is extended, properties may not be affected when the concrete is properly cured (p.3).
It has no effect on slump or temperature development and does not affect concrete-to-steel bond (Sika FerroGard CI 222 p.2). One dosage of 5 L/m³ is used for all exposures (p.2).
No. Sikament RB 850 PK is a superplasticiser for rheoplastic concrete (p.1). SikaCeram-850 Design is an epoxy tile grout (SikaCeram-850 Design p.1).
Steps and product facts are taken from the manufacturer data sheets (page cited). Products are named only where the data sheet confirms the use; quantities follow a site visit or photos. General guidance: check the data sheet or ask us before you start.