{"id":12742,"date":"2026-07-14T12:03:56","date_gmt":"2026-07-14T09:03:56","guid":{"rendered":"https:\/\/localhost\/wordpress\/?post_type=product&p=12742"},"modified":"2026-09-02T09:04:05","modified_gmt":"2026-09-02T06:04:05","slug":"j-ring-test-set","status":"publish","type":"product","link":"https:\/\/www.liyatest.com.tr\/en\/urun\/j-ring-test-set\/","title":{"rendered":"J Ring Test Set"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text css=”” woodmart_inline=”no” text_larger=”no”]<\/p>\n

What Is a J-Ring Test Set?<\/h1>\n

The J-Ring Test Set<\/strong> evaluates the passing ability of self-compacting concrete through reinforcement-like obstacles. During the test, fresh concrete flows between vertical steel bars under its own weight. Therefore, laboratories can observe both the flow performance and potential blocking behaviour of the mixture.<\/p>\n

High flowability alone does not guarantee good SCC performance. The concrete must also pass through congested reinforcement without excessive aggregate accumulation. The J-Ring method provides a practical way to compare this behaviour.<\/p>\n

Closely Spaced Barrier System<\/h2>\n

The J-Ring contains 16 stainless-steel bars with a diameter of \u00d818 mm<\/strong>. These bars simulate the restricted spaces found in heavily reinforced concrete structures.<\/p>\n

As the concrete moves through the barrier, coarse aggregate and mortar must flow together. If the mixture has poor passing ability, aggregate may accumulate around the bars. As a result, the spread can decrease and the blocking step can increase.<\/p>\n

The stainless-steel construction also supports frequent laboratory use and simplifies cleaning after testing.<\/p>\n

How Is the J-Ring Test Performed?<\/h2>\n

First, the operator places the 900 \u00d7 900 mm base plate<\/strong> on a flat and stable surface. Next, the J-Ring is positioned over the centre marking. The slump cone is then placed in the middle of the ring.<\/p>\n

The operator fills the cone with fresh self-compacting concrete. After preparation, the cone is lifted vertically without disturbing the mixture.<\/p>\n

The concrete flows through the steel bars and spreads across the plate. The operator records the time required for the concrete to reach the 500 mm circle<\/strong>. This value is known as the t500J time<\/strong>.<\/p>\n

Next, the operator measures the spread diameter in two perpendicular directions. Finally, concrete heights inside and outside the ring are compared to evaluate the blocking step.<\/p>\n

Evaluation of Passing and Blocking Behaviour<\/h2>\n

A small height difference generally indicates that the concrete passes through the reinforcement more easily. In contrast, a larger difference may indicate a higher risk of blocking.<\/p>\n

The spread diameter also provides useful information. A noticeable reduction compared with an unrestricted slump-flow test can show that the reinforcing bars restrict concrete movement.<\/p>\n

However, laboratories should not evaluate the J-Ring result alone. Slump-flow, V-Funnel or L-Box results can provide additional information about filling ability, viscosity and passing behaviour.<\/p>\n

Testing According to EN 12350-12<\/h2>\n

EN 12350-12<\/strong> defines the J-Ring method for determining the passing ability of self-compacting concrete. The test includes measurements such as the blocking step, spread diameter and t500J time<\/strong>.<\/p>\n

In addition, EN 12350-8<\/strong> describes the slump-flow test and t500 flow time for self-compacting concrete without the J-Ring obstruction.<\/p>\n

Therefore, laboratories can compare unrestricted and restricted flow behaviour to obtain a broader understanding of SCC performance.<\/p>\n

Reliable SCC Passing Ability Evaluation<\/h2>\n

The J-Ring Test Set<\/strong> combines a stainless-steel barrier system, standard slump cone and large measuring plate in one practical test arrangement.<\/p>\n

As a result, laboratories can evaluate the passing ability, spread behaviour and blocking tendency of self-compacting concrete<\/strong> in a controlled and repeatable manner.<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

STANDART:\u00a0 \u00a0 \u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/strong>EN 12350-12, 12350-8<\/em><\/p>\n

\n

LT-C0058<\/strong>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0J Ring Test Set<\/em><\/p>\n<\/div>\n","protected":false},"featured_media":11093,"template":"","meta":[],"product_brand":[],"product_cat":[136,139],"product_tag":[],"class_list":["post-12742","product","type-product","status-publish","has-post-thumbnail","product_cat-concrete","product_cat-fresh-hardened-concrete-testing","first","instock","shipping-taxable","product-type-grouped"],"yoast_head":"\nJ-Ring Test Set | SCC Passing Ability Test | L\u0130YA Test<\/title>\n<meta name=\"description\" content=\"J-Ring Test Set evaluates the passing ability and blocking behaviour of self-compacting concrete according to EN 12350-12.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.liyatest.com.tr\/en\/urun\/j-ring-test-set\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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