{"id":12974,"date":"2026-07-07T10:55:52","date_gmt":"2026-07-07T07:55:52","guid":{"rendered":"https:\/\/localhost\/wordpress\/?post_type=product&p=12974"},"modified":"2026-09-03T16:56:46","modified_gmt":"2026-09-03T13:56:46","slug":"efflux-index-apparatus-flow-coefficient","status":"publish","type":"product","link":"https:\/\/www.liyatest.com.tr\/en\/urun\/efflux-index-apparatus-flow-coefficient\/","title":{"rendered":"Efflux Index Apparatus | Flow Coefficient"},"content":{"rendered":"

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

What Is an Efflux Index (Flow Coefficient) Apparatus?<\/h1>\n

The Flow Coefficient Apparatus<\/strong> is used to evaluate the flow characteristics of aggregates under defined laboratory conditions. For fine aggregates, the test provides useful information about particle shape, angularity and surface texture<\/strong> by measuring how quickly a specified volume of material passes through a standard opening.<\/p>\n

The flow coefficient is expressed using the measured discharge time. Therefore, laboratories can compare aggregate samples using the same controlled test arrangement. Liya Test supplies the unit as the LT-A0049 Efflux Index (Flow Coefficient) Apparatus<\/strong>.<\/p>\n

Flow Coefficient Measurement<\/h2>\n

The test uses a cylindrical feed chamber and a defined discharge opening. First, the operator prepares the aggregate sample according to the applicable procedure. The sample is then introduced into the feed chamber.<\/p>\n

Once the flow control cover is released, the aggregate passes through the funnel. The operator measures the required discharge time in seconds. This value provides the basis for determining the flow coefficient.<\/p>\n

Particle geometry directly affects this behaviour. Angular or rough-textured particles may move differently from smoother and more rounded particles. Therefore, the method provides useful information when comparing aggregate sources.<\/p>\n

Simple Mechanical Test System<\/h2>\n

The apparatus consists of a flow control cover, cylindrical feed chamber, cylindrical body, funnel and metal stand<\/strong>. Its fully mechanical design requires no electrical connection or electronic controller.<\/p>\n

This simple construction also makes preparation and cleaning straightforward. The operator can complete repeated tests without complex machine setup.<\/p>\n

The LT-A0049<\/strong> measures 15 \u00d7 18 \u00d7 41 cm<\/strong> and weighs approximately 5 kg<\/strong>, making it suitable for routine laboratory use.<\/p>\n

Aggregate Shape and Surface Characteristics<\/h2>\n

Flow behaviour depends not only on particle size but also on particle shape and surface texture. For this reason, the result can assist laboratories when comparing aggregates from different production sources.<\/p>\n

However, the flow coefficient should be interpreted together with other relevant aggregate properties. Particle-size distribution, shape index and crushed-surface characteristics may also influence overall material performance.<\/p>\n

EN 933-6 Standard<\/h2>\n

The current EN 933-6:2022<\/strong> standard specifies the reference method for determining the flow coefficient of fine aggregates up to 2 mm<\/strong> and coarse aggregates from 4 mm to 20 mm<\/strong>. BSI lists BS EN 933-6:2022<\/strong> as the current edition.<\/p>\n

The Efflux Index (Flow Coefficient) Apparatus<\/strong> combines a compact mechanical design with a straightforward measurement method. As a result, aggregate laboratories can evaluate flow behaviour in a practical and repeatable manner.<\/p>\n

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

STANDART:<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/strong> TS EN 932-2; ASTM C702; BS 812:1, 1377:1, 1924:1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/em><\/p>\n

LT-A0049<\/strong>\u00a0 \u00a0 \u00a0 Efflux Index Apparatus <\/em>| Flow Coefficient <\/em><\/p>\n","protected":false},"featured_media":11622,"template":"","meta":[],"product_brand":[],"product_cat":[124,132],"product_tag":[],"class_list":["post-12974","product","type-product","status-publish","has-post-thumbnail","product_cat-aggregate-test-equipment","product_cat-general-geometrical-properties","first","instock","shipping-taxable","product-type-grouped"],"yoast_head":"\nFlow Coefficient Apparatus | EN 933-6 | L\u0130YA Test<\/title>\n<meta name=\"description\" content=\"Flow Coefficient Apparatus measures aggregate flow characteristics and particle angularity according to EN 933-6.\" \/>\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\/efflux-index-apparatus-flow-coefficient\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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