J-Ring, Narrow Gap

Product Code : MSI 2009

Product Description:

The J-Ring Test Apparatus is engineered to evaluate the passing ability and blocking resistance of Self-Compacting Concrete (SCC) as it flows through reinforcing bars. Fully compliant with ASTM C1621 and BS EN 12350-12, this apparatus features a heavy-duty, zinc-plated steel ring equipped with a series of vertically mounted, precision-spaced smooth steel bars mimicking structural rebar cages. Used in conjunction with a standard slump cone and a flat flow table, it allows quality control teams to accurately quantify if an SCC batch can seamlessly navigate tight reinforcing structures without aggregate segregation 

Applications

• Self-Compacting Concrete (SCC) Testing

• Civil Engineering Laboratories

• Ready Mix Concrete (RMC) Plants

• Construction Quality Control

• Precast Concrete Industry

• Infrastructure & Bridge Projects

• Research & Development Laboratories

• Engineering Colleges & Universities

Features

• Manufactured according to EN 12350-12

• Precision stainless steel construction

• 16 smooth bars (Ø18 mm) for narrow-gap testing

• Measures passing ability, flow spread, and flow time

• Corrosion-resistant finish for long service life

• Suitable for laboratory and field testing

• Accurate, reliable, and repeatable results

• Easy to assemble, clean, and maintain

Technical Specifications

Parameter Specification

Standard : EN 12350-12

Test Method : J-Ring Test

Material : Stainless Steel

Ring Type : Narrow Gap

Vertical Bars : 16 Smooth Bars

Bar Diameter : Ø18 mm

Application : Self-Compacting Concrete (SCC)

Standard Supply Includes

MSI 2009 – J-Ring, Narrow Gap

• Stainless Steel J-Ring with 16 Smooth Bars

Compatible Accessories

• MSI 2002 – Slump Cone for J-Ring Test

• MSI 2009-A – Stainless Steel Base Plate (900 × 900 × 3 mm) with engraved 200 mm & 500 mm circles conforming to EN 12350-8

• MSI 2009-B – Steel Weighted Collar (9 kg)

• MSI 2009-C – Slump Cone Conforming to EN 12350-8 for J-Ring & Slump Flow Tests

Working Principle

Fresh self-compacting concrete is placed inside the slump cone positioned within the J-Ring. After lifting the cone, the concrete flows outward through the spaces between the vertical bars. The test measures the flow spread, flow time, and passing ability, indicating the concrete's capacity to flow through congested reinforcement without blocking or segregation.

Advantages

• Accurate evaluation of SCC passing ability

• Measures flow spread and flow time simultaneously

• Stainless steel construction for durability

• Excellent corrosion resistance

• Simple operation with reliable results

• Suitable for laboratory and on-site testing

• Low maintenance and long service life

Why Choose Multitech Scientific Instruments?

• Precision-engineered concrete testing equipment

• Manufactured to European testing standards

• High-quality stainless steel construction

• Consistent and repeatable performance

• Competitive pricing

• Excellent after-sales support

• Trusted by laboratories, consultants, contractors, and educational institutions

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