About Fosroc Auramix 110

Fosroc Auramix 110 belongs to Fosroc’s Auramix family of high-range water-reducing admixtures (superplasticisers) and is positioned by Fosroc as a high early strength superplasticiser built on new admixture technology, aimed primarily at the ready-mix concrete industry. Where a conventional superplasticiser is asked simply to reduce water and hold slump, Auramix 110 is tuned so that the same workability comes with a faster early-age strength curve — the property RMC producers, precasters and fast-track contractors care about most because it governs how quickly formwork can be struck, elements de-moulded, and the next pour scheduled.

For an Indian audience, the practical context is the ready-mix value chain. A typical RMC operation lives or dies on cube results at 1, 3 and 7 days and on truck-cycle economics. An admixture that lifts early strength lets a plant either reach the same de-shutter strength with less cement, or hit a tighter construction programme at the same binder content. Auramix 110 is designed to sit in exactly that decision: it is a workhorse PCE for structural-grade concrete rather than a niche self-compacting or architectural product.

Like the rest of the Auramix PCE range, it works by polycarboxylic-ether dispersion — long polymer chains adsorb onto cement grains and keep them apart through steric (physical) repulsion rather than the purely electrostatic action of older naphthalene (SNF) plasticisers. The result is more efficient water reduction at lower dosage, cleaner slump retention, and — in the 110 grade — a formulation biased toward early hydration and strength. It is supplied as a ready-to-use liquid and is chloride-free, so it is suitable for reinforced and prestressed concrete.

As an authorised Fosroc distributor and applicator, Space Arc Engineering supplies Auramix 110 with batching-plant dosing guidance, trial-mix support and pan-India logistics. Because exact published figures for the 110 grade vary by region and revision, we strongly recommend confirming the current local Technical Data Sheet (TDS) and running a site trial before locking a mix design — the figures below are stated either as verified product positioning or clearly flagged as typical for the Auramix PCE family.

The technical insight

The defining mechanism is steric dispersion from a polycarboxylic ether (PCE) backbone. Older SNF/SMF superplasticisers rely on a negative surface charge to push cement particles apart, an effect that decays as the charge is consumed — which is why slump can fall away quickly. PCE polymers instead carry side chains that physically hold cement grains apart, giving the same or better water reduction at a fraction of the dosage and far cleaner workability behaviour. What makes the 110 grade distinct within the Auramix range is that the polymer architecture and any co-additives are tuned toward early hydration: instead of retarding set to extend workability (the job of grades like Auramix 300/350), Auramix 110 targets faster early-age strength. In practice this is what shortens the de-shuttering and prestress-transfer window. The trade-off engineers must respect is that early-strength chemistry is temperature-sensitive — gains are most dramatic in cool conditions and can compress workability time in hot weather — so dosage and, if needed, a separate retarder must be calibrated to ambient temperature at the plant rather than copied from a winter trial into a summer pour.

Where it is used

• Ready-mix concrete (RMC) for structural elements where early de-shuttering or early load application is required
• Precast concrete elements (beams, columns, panels, pavers) needing fast mould turnaround
• Prestressed and pre-tensioned concrete where early strength governs strand release
• Fast-track construction programmes — slabs, cores and shear walls on tight cycle times
• Cold-weather / winter concreting where early strength gain is otherwise slow
• Cement-optimised structural mixes where early strength offsets a reduced binder content
• High-grade structural concrete (M30 and above) requiring controlled water reduction and reliable cube results

Key advantages

• High early strength gain — faster 1 to 3 day cube results enabling earlier formwork striking and faster construction cycles
• High-range water reduction at low dosage thanks to new-generation PCE chemistry
• Improved later-age strength and durability through a lower water-cement ratio
• Enables cement optimisation — same de-shutter strength at reduced binder, lowering cost and embodied carbon
• Chloride-free, so safe for reinforced and prestressed concrete
• Supplied as a ready-to-use liquid for accurate, repeatable plant dispensing
• Tailored to the ready-mix industry — consistent batch-to-batch performance for plant operations
• Backed in India by Fosroc technical support and Space Arc Engineering’s trial-mix and logistics service

Limitations & considerations

• Optimum dosage must be established by site trial — over-dosing can cause excess retardation, bleeding or segregation
• Early-strength behaviour is temperature-dependent; hot-weather pours may need recalibration and possibly a separate retarder for workability
• Not a substitute for retarding superplasticisers (e.g. Auramix 300/350) where long workability retention or hot-weather pumping is the priority
• Generally should not be combined with other PCE or naphthalene admixtures unless cleared by Fosroc, due to compatibility risk
• Performance depends on cement chemistry, fly ash/GGBS content and aggregate — published figures are indicative until verified by trial
• Being a liquid admixture it must be protected from freezing and prolonged high temperatures in storage
• Exact regional TDS values for the 110 grade should be confirmed before mix-design sign-off rather than assumed from sister grades

Selection & best practice

Specifications

Industry use cases

How we position Fosroc Auramix 110

Within Fosroc’s own line-up, Auramix 110 sits at the early-strength end of the Auramix PCE superplasticiser family. Specify it when fast de-shuttering, precast mould turnaround or prestress transfer drives the programme; step up to a retarding/advanced grade such as Auramix 300 or Auramix 350 when long workability retention, hot-weather pumping or self-compacting flow matters more, or to higher-numbered grades (400/450/500) for the most demanding high-performance and SCC mixes. For projects still on older-generation chemistry, Fosroc’s naphthalene-based Conplast SP range remains the more economical, less early-strength-focused alternative. Among competitor brands an Indian buyer will realistically cross-shop, the closest equivalents are Sika’s ViscoCrete PCE superplasticiser range, Master Builders Solutions (MBS) MasterGlenium, and the locally strong BASF-lineage and Dr. Fixit / Pidilite admixture lines, with STP also active in the structural-admixture space. Auramix 110’s differentiator is its specific tuning for the ready-mix industry’s early-strength and cycle-time needs, backed in India by Fosroc’s technical depth and, through Space Arc Engineering, by trial-mix support and reliable distribution. As always, the right choice should be confirmed by a project-specific trial rather than brand preference alone.

Related Concrete Admixtures products

View all Concrete Admixtures products →