Conplast AEA
Air Entraining Admixture for Frost-Resistant and Workable Concrete
Authorized Project Distributor — Fosroc India | Space Arc Engineering, Ghaziabad
Product Overview
Conplast AEA is a synthetic resin-based air-entraining admixture conforming to ASTM C260 and IS 9103. It introduces a controlled distribution of microscopic air bubbles throughout the concrete mix that provides several important benefits: greatly improved resistance to freeze-thaw damage (critical for exposed concrete in high-altitude North India), improved workability and cohesion of the fresh concrete (reducing the tendency of harsh mixes to segregate and bleed), and improved resistance to surface scaling caused by de-icing salt application in cold climate regions. The entrained air voids act as a relief system — when water in the concrete pores freezes and expands, the pressure is accommodated by the adjacent entrained air voids rather than causing the concrete to crack and spall. A typical air content of 4 to 7% (depending on aggregate size and exposure class) is targeted in air-entrained concrete mixes. Conplast AEA is used for road and bridge deck concrete, precast elements exposed to frost, canal and irrigation structure concrete, and any concrete exposed to freeze-thaw cycling in North Indian hill regions. Space Arc Engineering distributes Conplast AEA for frost resistance and workability applications across Delhi NCR and Northern India.
Applications
- Road and bridge deck concrete in frost-exposed regions of North India
- Concrete paving and pavement slabs subject to freeze-thaw cycling
- De-icing salt resistant concrete for highway and airport pavement
- Canal and irrigation structure concrete in cold mountainous regions
- Precast concrete exposed to outdoor frost conditions
- Harsh mix workability improvement without excess water addition
Key Advantages
- ASTM C260 compliant air entraining admixture
- Excellent freeze-thaw durability for exposed concrete
- Improves workability and cohesion of harsh or lean mixes
- Reduces bleeding and segregation tendency
- Compatible with Conplast and Auramix superplasticisers
- Proven Fosroc admixture for cold climate and road concrete
Technical Data
| Type | Synthetic resin air entraining admixture |
| Standard | ASTM C260, IS 9103 |
| Air Content Achieved | 4–7% (target range, aggregate size dependent) |
| Appearance | Light brown liquid |
| Dosage | 0.05–0.5 litres per 100 kg cement (trial required) |
| Effect | Controlled micro-air void system in concrete matrix |
Get a Quote
📞 +91 9999155255
📧 info@space-arc.com
🏢 Space Arc Engineering, Sahibabad, Ghaziabad
Frequently Asked Questions
How much air content should be targeted when using Conplast AEA?
The target air content depends on the maximum aggregate size and the exposure class of the concrete. For concrete with 20 mm maximum aggregate and moderate freeze-thaw exposure, a target of 4.5 to 6.0% total air content is typical. For more severe exposure or larger aggregate, refer to ACI 318 or IS guidance on air content for the specific exposure class. Air content must be measured on fresh concrete using a pressure air meter (ASTM C231) before concrete is placed, and the dosage adjusted to hit the target range.
Does air entrainment reduce concrete compressive strength?
Yes. Each 1% of intentionally entrained air reduces concrete compressive strength by approximately 4 to 5%. For a concrete mix targeting 4.5% air, this means approximately 18 to 22% strength reduction compared to the same mix without air entrainment. To compensate, the mix design should be adjusted — typically by reducing the water-cement ratio or increasing the cementitious content — to achieve the specified design strength in the air-entrained mix. Consult Space Arc Engineering for assistance with air-entrained concrete mix design.
Can Conplast AEA be used with fly ash or GGBS concrete?
Yes. Conplast AEA can be used in concrete mixes containing fly ash, GGBS, and other supplementary cementitious materials. However, the response to air-entraining agents is influenced by the carbon content of fly ash — high-carbon fly ash absorbs AEA and significantly increases the dosage needed to achieve target air content. Test any fly ash source with AEA before committing to a mix design, and expect to adjust dosage if the fly ash source changes.
Source Conplast AEA for Your Project
Space Arc Engineering is an Authorized Project Distributor for Fosroc India serving Delhi NCR, Ghaziabad, Noida and Uttar Pradesh.
Get Conplast AEA — Air Entraining Admixture for Frost-Resistant and Workable Concrete — pricing, TDS & technical help
Space Arc Engineering is an authorized Fosroc distributor & applicator in Delhi NCR & pan-India. Fast quotes, datasheets and on-site support.
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