U Shape Box Apparatus

Product Code : EL-CTLE-10298

U Shape Box Apparatus (code EL-CTLE-10298) is a stainless steel U box for determining the filling and passing ability of self-compacting concrete (SCC). Three 12 mm diameter rebars at its gate are spaced 50 mm centre to centre, leaving 35 mm clear between bars, the box is mounted on a frame with a fixing mechanism, and the test equipment also includes a scoop, a trowel and a stopwatch.

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Specifications

What Is the U Shape Box Apparatus Used For?

Concrete for congested reinforcement must fill the formwork and pass between the bars without blocking. In the U box test about 20 litres of fresh SCC is placed in the left hand section with the scoop and trowel; the gate is lifted and the concrete flows through the reinforcing bars and rises in the other section. Once the flow stops, the height of concrete in each section is measured, and the closer the two heights are, the better the filling and passing ability. The stopwatch is used to time the stages of the test. The standard listed for it is UNI 11044.

What to Specify When Ordering

• Quantity — the number of U box sets required.

Frequently Asked Questions

What does the U box test show about SCC?
It shows the filling and passing ability of self-compacting concrete, by measuring how high the concrete stands in each section after it has flowed through the bars at the gate.

How much concrete is needed for one U box test?
About 20 litres of concrete is placed in the left hand section of the U box before the gate is lifted to let it flow.

How are the gate bars arranged?
Three 12 mm diameter rebars sit at the gate, spaced 50 mm centre to centre to leave a clear gap of 35 mm between neighbouring bars.

What equipment is listed for the U box test?
The list covers a U box of stiff, non absorbing material, a scoop, a trowel and a stopwatch; the box itself is stainless steel, mounted on a frame with a fixing mechanism.

Which standard applies to the U box?
The standard listed for it is UNI 11044, for the U box test on fresh self-compacting concrete.

OEM Manufacturer

Buyers of the U Shape Box Apparatus deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests concrete testing equipment, from workability apparatus and specimen moulds to compression and flexure machines, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.

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See the full Concrete Testing Lab Equipment range or all Civil Engineering Lab Equipment.

Request a Quote

For this and other concrete testing lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of U box sets required and your delivery location through the contact page, or add the U Shape Box Apparatus to the enquiry cart from this page.

Last updated: October 2026