Product Overview

Centrament Flow 320 is a high-range, third-generation polycarboxylate ether (PCE) superplasticising admixture from MC-Bauchemie occupying the upper performance tier of the Centrament Flow range — above the mid-range Centrament Flow 250 — and formulated for the most demanding concrete applications requiring maximum water reduction, sustained flowability at very low water-cement ratios, and extended slump retention for long-distance ready-mix delivery or complex structural pours. The PCE molecule in Centrament Flow 320 is engineered with a longer polyethylene oxide (PEO) side chain length and higher graft density compared to standard PCE products — this molecular architecture provides: greater steric hindrance effect on cement particle surfaces, producing a higher level of cement dispersion at lower admixture dosage; a slower adsorption kinetics profile, providing a more sustained dispersion effect over time and producing the extended slump retention (60 to 120 minute retention of target slump) that distinguishes high-performance PCE from standard-grade PCE with rapid slump loss; and a water reduction capability of 25 to 35 percent at constant slump — sufficient to achieve the w/c ratios of 0.28 to 0.35 required for C60 to C80 high-strength concrete specification. The practical application range of Centrament Flow 320 covers: high-strength concrete for high-rise building core walls and columns (M50 to M70 per IS 456, Grade C50 to C70 per EN 206) in buildings above 30 storeys where higher concrete grade reduces column cross-section and increases net usable floor area; self-compacting concrete (SCC) for congested reinforcement sections, precast architectural elements, and structures where vibration is not possible — the high-range water reduction at high slump (200 mm or flow greater than 650 mm) enables SCC without excessive cement content; and ready-mix supply to long-distance or high-traffic-delay sites in Delhi NCR where the standard PCE has inadequate slump retention and conventional retarder addition is incompatible with the strength and permeability specification. Space Arc Engineering supplies Centrament Flow 320 for ready-mix concrete producers, high-rise building contractors, precast manufacturers, and infrastructure designers across Ghaziabad, Delhi NCR, Noida, and Uttar Pradesh.

Applications

• High-strength concrete for high-rise building core walls and columns — producing M50 to M70 grade concrete for the reinforced concrete core walls, shear walls, and columns of high-rise residential and commercial buildings in Delhi NCR (Noida Expressway, Dwarka, Gurugram corridors) where high concrete grade reduces section size and allows efficient floor plan layouts, and where Centrament Flow 320 achieves the required low w/c ratio at placeable slump
• Self-compacting concrete for congested reinforcement — formulating SCC with flow values greater than 650 mm (SF2 to SF3 class per EN 206) for pour applications where reinforcement congestion prevents proper vibration — deep pile caps with closely spaced rebar, precast columns and beams with closely spaced stirrups, and post-tensioned slab sections at anchorage zones — Centrament Flow 320 high-range water reduction achieves SCC flow at w/c ratios of 0.30 to 0.38 without requiring excessive paste volume
• Long-distance and high-traffic ready-mix supply in Delhi NCR — adding Centrament Flow 320 to concrete mixes supplied by ready-mix plants (Ghaziabad, Noida, Faridabad) to construction sites in central Delhi where transit times of 60 to 120 minutes are routine due to traffic congestion, and where standard PCE slump retention is insufficient — Centrament Flow 320 extended slump retention maintains workable concrete (slump greater than 100 mm) for up to 120 minutes from batching, eliminating the field water addition that destroys water-cement ratio compliance
• Bridge deck high-performance concrete — producing HPC (high-performance concrete) with permeability class XD3 or XS3 and compressive strength 50 to 60 MPa for bridge deck and pier concrete on National Highway contracts, where NHAI specifications now routinely require w/c less than 0.40, minimum 400 kg per cubic metre cementitious content, and RCPT values below 1000 coulombs at 56 days
• Precast prestressed high-strength beam and slab production — dosing Centrament Flow 320 for the production of pretensioned prestressed concrete beams and floor slabs at precast yards where the design concrete grade is C50 or above and the transfer strength (at prestress release, typically at 18 to 24 hours after casting) requires minimum 35 to 40 MPa — Centrament Flow 320 provides the workability for casting without the strength regression that higher-temperature steam curing causes with some PCE formulations
• Industrial slab high-density concrete for heavy-duty floors — producing high-density, low-permeability concrete for cast-in-place industrial floor slabs at M40 to M50 with w/c less than 0.40 for heavy-duty manufacturing and logistics floor applications where concrete strength and surface abrasion resistance are primary specifications and the low w/c ratio achievable with Centrament Flow 320 directly improves the surface hardness of the concrete without adding floor hardener

Key Advantages

• 25 to 35 percent water reduction — maximum water reduction capability across the PCE admixture range — enables concrete grades from C50 to C80 at practical workability (slump 150 to 200 mm) that are impossible to achieve with standard or mid-range PCE products at equivalent cement content, and achieves minimum permeability and maximum durability in all structural concrete grades
• Extended slump retention to 120 minutes — the longer PEO side chain and slower adsorption kinetics of the Flow 320 molecular architecture deliver slump retention of 60 to 120 minutes at target slump — critical for long-distance ready-mix supply and complex pours where standard PCE with 30 to 45 minute slump retention leads to field water addition and w/c ratio compliance failures
• SCC capability at controlled w/c ratio — high-range water reduction enables SCC flow (greater than 650 mm) at w/c ratios of 0.30 to 0.38 without requiring the very high paste volumes (and resultant cracking and shrinkage risk) that SCC achieved at normal PCE dosage would need — the result is a more stable, lower-shrinkage SCC with better structural performance
• Compatible with fly ash and GGBFS blended concrete — Centrament Flow 320 provides effective cement dispersion in fly ash-blended (PPC) and GGBFS-blended (PSC) concrete mixes, which are increasingly specified for high-strength and durable concrete in India — compatibility confirmed across cement types commonly used in Delhi NCR concrete production
• Improved paste microstructure at low w/c ratio — the dispersing action of Centrament Flow 320 at very low w/c ratios ensures complete hydration of cement particles that would otherwise remain dry at the centre of cement clusters — the resulting paste microstructure has lower total porosity and higher matrix density than equivalent concrete mixed with lesser-performing PCE products at the same w/c ratio
• Dose-efficient — the high molecular activity of the Flow 320 PCE architecture achieves maximum water reduction at lower admixture dosage compared to standard PCE — reduced dosage per cubic metre of concrete partially offsets the higher unit cost of the high-performance formulation