Auracast 100
Low-viscosity PCE superplasticiser engineered to give precast concrete high early strength and faster demoulding without steam curing.
Auracast 100 at a glance
The essentials specifiers and contractors ask first — answered straight from the product data, with links to go deeper.
What is it?
Auracast 100 is a low-viscosity, latest-generation polycarboxylic ether (PCE) superplasticiser from Fosroc, formulated specifically for precast concrete production where high early strength and fast demoulding are the priority.
Where is it used?
It is used in factory precast of high-volume units such as hollow-core slabs, concrete blocks and bricks, cement tiles, kerbstones, edgings, pavers and landscape items that need to be stripped from the mould quickly.
Why use it?
Its PCE polymer disperses cement efficiently to cut water demand in flowable concrete and build high early strength without extra cement or steam curing, so moulds can be turned over faster and productivity rises.
How is it applied?
It is dispensed as a liquid into the mix water or added during batching; the production dosage must be established by trial mixes with the actual cement, as PCE response varies with cement chemistry.
Key advantages
- Low-viscosity liquid that is easy to dispense and meter accurately in precast batching
- Builds high early strength without raising cement content, enabling earlier demoulding
- Earlier de-shuttering increases mould turnover and daily precast productivity
- Reduces water demand in flowable concrete, supporting lower water-cement ratios and higher strength
- Improves surface finish and minimises early-handling damage on demoulded units
- Supports better carbonation resistance and reduced shrinkage, creep and efflorescence
- Suitable for mixes using cement replacements (fly ash, GGBS) and low water-cement ratios
- Complies with IS:9103:1999 (superplasticiser) and ASTM C494 Type F & G depending on dosage
Specifications
- Product type: Low-viscosity precast superplasticiser (high early strength)
- Chemistry: Polycarboxylic ether (PCE) polymer with long side chains and short main chains
- Standards: Complies with IS:9103:1999 as a superplasticiser and ASTM C494 Type F & G depending on dosage
- Pack size: 250 kg (per distributor listing)
- Full technical data: Request the certified TDS from Space Arc Engineering for dosage, specific gravity, chloride content and other certified values
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About Auracast 100
A plain-language overview of what Auracast 100 is, the problem it solves and how Space Arc Engineering positions it in a specification.
Auracast 100 is a member of Fosroc's Auracast family of polycarboxylic ether (PCE) admixtures and is positioned by the manufacturer as a precast superplasticiser. Fosroc describes it as a unique combination of latest-generation superplasticisers based on a polycarboxylic ether polymer with long side chains and short main chains, supplied as a low-viscosity liquid suitable for precast elements.
Unlike a general-purpose water reducer, Auracast 100 is built around one commercial objective for precast yards: faster mould turnover. It delivers high early strength without increasing cement content or reducing workability, which means precast units reach their stripping strength sooner and can be de-shuttered earlier. Earlier de-shuttering directly increases the number of casting cycles a mould can complete in a day, and Fosroc cites improved surface finish, reduced early-handling damage, better carbonation resistance, and reduced shrinkage, creep and efflorescence as further benefits.
Space Arc Engineering supplies and supports Auracast 100 for precast manufacturers and high-volume concrete-product makers across Delhi NCR, Ghaziabad, Noida and Northern India. Because admixture dosage and behaviour depend on the specific cement and mix design, we recommend establishing the working dosage through trial mixes and can arrange the certified Technical Data Sheet (TDS) and on-site trial support.
The technical insight
Why Auracast 100 behaves the way it does — the mechanism behind the performance, in specifier-friendly terms.
PCE superplasticisers like Auracast 100 work by steric (physical) dispersion rather than the purely electrostatic action of older naphthalene- or melamine-based plasticisers. The polymer's main chain adsorbs onto cement particles while its long side chains project outward, physically holding particles apart so flocculated cement opens up and releases trapped water. The freed water becomes available for workability, which lets the producer cut the water content for the same slump, lower the water-cement ratio, and gain strength. Auracast 100's architecture (long side chains, short main chain) is tuned to give that dispersion while promoting early hydration, so strength develops quickly at ambient temperatures.
Where Auracast 100 is used
Typical applications Auracast 100 is specified for, supplied by Space Arc Engineering across Delhi NCR, Ghaziabad, Noida and Uttar Pradesh.
- Hollow-core slab production in precast factories
- Concrete blocks, building blocks and bricks
- Cement (concrete) roofing and flooring tiles
- Kerbstones, edgings and channel units
- Concrete pavers and paving blocks
- Landscape and garden concrete items
- High-performance precast concrete requiring high early strength without steam curing
Key advantages
The properties that make Auracast 100 the right choice — drawn from the manufacturer's product literature.
- Low-viscosity liquid that is easy to dispense and meter accurately in precast batching
- Builds high early strength without raising cement content, enabling earlier demoulding
- Earlier de-shuttering increases mould turnover and daily precast productivity
- Reduces water demand in flowable concrete, supporting lower water-cement ratios and higher strength
- Improves surface finish and minimises early-handling damage on demoulded units
- Supports better carbonation resistance and reduced shrinkage, creep and efflorescence
- Suitable for mixes using cement replacements (fly ash, GGBS) and low water-cement ratios
- Complies with IS:9103:1999 (superplasticiser) and ASTM C494 Type F & G depending on dosage
Limitations & considerations
Where Auracast 100 is not the right answer. Check these constraints from the manufacturer before specifying — using it outside its scope is the most common cause of failure.
- Positioned for precast production, not for long-haul ready-mix where extended slump retention is the priority; for those mixes a retention-type admixture is the better choice
- Dosage and setting response vary with cement chemistry (notably C3A content) and with fly-ash/GGBS replacement, so trial mixes with the actual cement are essential before committing a production dosage
- PCE admixtures are sensitive to overdosing, which can cause bleeding, segregation or set retardation rather than added benefit
- Fosroc's official literature does not publish a quantified water-reduction percentage, dosage range or workability-retention figure for this product; those values should be taken from the certified TDS, not generic assumptions
- Not a substitute for sound mix design, curing or quality control; it optimises a well-proportioned mix rather than rescuing a poor one
Selection & best practice
How to decide whether Auracast 100 fits your job — and how to apply it so the repair lasts.
Specify Auracast 100 when the goal in a precast yard is faster cycle time and high early strength for high-volume units cast without steam curing. Within the Auracast range, choose Auracast 100 for general precast where a balance of water reduction and early strength suits the product mix, and consider a more early-strength-specialised grade where the single overriding aim is the fastest possible time-to-stripping. For ready-mix concrete delivered over longer transit times, a slump-retention PCE such as Fosroc's Auramix range is more appropriate than this precast-focused product. When in doubt, ask Space Arc for the certified TDS and a trial-mix recommendation against your cement.
Application best practice
- Run trial mixes with the exact cement brand, grade and any fly-ash/GGBS replacement before fixing the production dosage
- Dispense the admixture into the mix water or during batching with calibrated dosing equipment; avoid adding it onto dry cement
- Start at the lower end of the dosage indicated in the certified TDS and adjust upward in small steps to reach target slump and strength
- Watch for overdosing signs (bleeding, segregation, delayed set) and dial back if they appear
- Verify early (stripping) strength on trial units before committing to a faster demoulding cycle in production
- Store sealed, off the ground and protected from frost and direct sun, and confirm shelf life and re-stirring requirements from the TDS
Specifications
Indicative properties from the manufacturer's literature. Always confirm batch-specific values against the current TDS before specification.
| Product type | Low-viscosity precast superplasticiser (high early strength) |
|---|---|
| Chemistry | Polycarboxylic ether (PCE) polymer with long side chains and short main chains |
| Standards | Complies with IS:9103:1999 as a superplasticiser and ASTM C494 Type F & G depending on dosage |
| Pack size | 250 kg (per distributor listing) |
| Full technical data | Request the certified TDS from Space Arc Engineering for dosage, specific gravity, chloride content and other certified values |
Coverage, dosage, pack sizes and cure times vary with substrate and conditions — request the full TDS for certified technical data.
Industry use cases
Real-world scenarios where Auracast 100 is the practical choice — the teams who reach for it and the jobs it does for them.
- Precast concrete-products plants making blocks, pavers and tiles that need rapid demoulding for high throughput
- Kerb, edging and channel manufacturers seeking faster mould turnover and clean surface finish
- Hollow-core and precast-element producers wanting early strength without the cost of steam curing
- Precast operations using fly-ash or GGBS blends at low water-cement ratios for durability
- Manufacturers standardising on a PCE admixture to cut cement content while holding workability
Frequently asked questions
Common questions about specifying and sourcing Auracast 100.
What is Auracast 100?
It is a low-viscosity, latest-generation polycarboxylic ether (PCE) superplasticiser from Fosroc, formulated for precast concrete. It is designed to give high early strength and faster demoulding without increasing cement content or reducing workability.
What is Auracast 100 used for?
It is used in precast production of high-volume units such as hollow-core slabs, concrete blocks and bricks, cement tiles, kerbstones, edgings, pavers and landscape items, where fast stripping from the mould improves productivity.
How does Auracast 100 improve precast productivity?
By dispersing cement efficiently it builds high early strength without extra cement, so units reach stripping strength sooner. Earlier de-shuttering lets each mould complete more casting cycles per day, increasing output.
Does Auracast 100 meet any standards?
Per the distributor listing it complies with IS:9103:1999 as a superplasticiser and with ASTM C494 Type F and G depending on dosage. Confirm the exact compliance statement against the current certified TDS for your batch.
What dosage of Auracast 100 should I use?
Fosroc does not publish a fixed dosage figure in its general product literature, and PCE response varies with cement chemistry and any fly-ash or GGBS replacement. Establish the production dosage by trial mixes with your actual cement, and request the certified TDS from Space Arc for the recommended range.
Is Auracast 100 suitable for ready-mix concrete delivered to site?
It is positioned as a precast admixture focused on early strength and fast demoulding rather than long slump retention. For ready-mix delivered over longer transit times, a retention-type PCE such as Fosroc's Auramix range is generally more suitable. Ask Space Arc to match the admixture to your delivery time and temperature.
Can it be used with PPC, PSC or fly-ash and GGBS blends?
Yes, Fosroc states it suits concrete with cement replacements and low water-cement ratios. Because dosage and setting response differ between cements and blends, trial mixes with the specific binder combination are essential before production.
References
Manufacturer and technical sources this page draws on. Always confirm current data against the live TDS before specification.
Source Auracast 100 for your project
Space Arc Engineering is an authorised distributor for Fosroc, serving Delhi NCR, Ghaziabad, Noida and Uttar Pradesh. Talk to us for pricing, the technical data sheet and on-site support.
Or email info@space-arc.com · www.space-arc.com