J Ring
Product Code : JA-CT-9909
The J Ring (SKU JA-CT-9909) determines the passing ability of self-consolidating concrete, that is, how well it flows through gaps between reinforcing bars without blocking. The ring of bars is used with the slump cone, and the J-Ring flow spread shows the restricted deformability of the concrete caused by the blocking effect of the bars. The difference between the unrestricted slump flow and the J-Ring flow indicates passing ability. The test suits laboratory comparison of mixes and field quality control. It is supplied by JaincoLab for concrete laboratories.
Specifications
The J Ring is a ring of vertical bars used with the slump cone to measure J-Ring flow and compare it with slump flow; ring diameter, number and size of bars and base plate are not listed in the product data and are confirmed on the quotation.
| Product | J Ring |
| SKU | JA-CT-9909 |
| Test | Passing ability of self-consolidating concrete |
| Result | J-Ring flow spread compared with slump flow |
| Use | Laboratory mix comparison and field quality control |
| Other use | Segregation check by comparing two portions of a sample |
Applications of the J Ring
Technicians place the ring around the slump cone, fill and lift the cone, then measure the spread and the height difference inside and outside the ring to judge blocking.
- Passing ability of self-compacting concrete
- Comparing SCC mixes in the laboratory
- Field quality control of SCC
- Segregation resistance checks
- Concrete technology practicals
Scope of supply and ordering
This listing covers the J Ring for self-compacting concrete. Accessories, spares and quantities are confirmed on the quotation. Slump cone and base plate are confirmed on the quotation.
Minimum order quantity, packing and lead time for the J Ring are stated on the quotation once the quantity and delivery destination are known. JaincoLab supplies single laboratory orders, bulk requirements for engineering colleges and polytechnics, and tender lots.
Frequently asked questions
What does the J Ring test show?
The passing ability of self-consolidating concrete through reinforcement gaps.
How is passing ability judged?
From the difference between slump flow and J-Ring flow.
Can it be used on site?
Yes, as a field quality control test as well as in the laboratory.
Related products
Browse the JaincoLab concrete testing equipment range for other concrete laboratory equipment.
Request a quote
For a quotation on the J Ring, share the quantity, any size or specification preference and the destination via the JaincoLab contact page; the sales team also answers at [email protected]. Tender and project enquiries can be sent through the tenders page.
