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What is flow cone test?

What is flow cone test?

Grout Flow Cones measure the flowability of fluid hydraulic grout by the flow cone method used in preplaced aggregate concrete. Flowability is measured by the time of efflux of a 1.725L sample of grout through the 0.5in (12.7mm) ID discharge tube orifice from the cone.

What is a flow cone?

The flow cone measures flowability of hydraulic grout used in preplaced aggregate concrete. This model is designed for flexibility in testing applications and does not include an Orifice to regulate flow. When fitted with the HMA-146 0.5in (12.7mm) Orifice, it meets the requirements of ASTM C939.

Which test is used for measuring flow properties of grout?

The flow cone test (Scanlon 1994) is intended for use in measuring the flow properties of grout for preplaced-aggregate concrete, but can also be used for other highly flowable grouts. The test is standardized in ASTM C939 and is considered appropriate for use in both the field and the lab.

What is Slump flow test?

The slump flow test is done to assess horizontal flow of concrete at the absence of obstructions. It is the most commonly used test and gives a good assessment of filling ability. It may be used at the site. The test also indicates the resistance to segregation.

How many layers of concrete are placed to fill a slump cone?

three
The steel slump cone is placed on a solid, impermeable, level base and filled with the fresh concrete in three equal layers. Each layer is rodded 25 times to ensure compaction.

What is Marsh cone test?

Marsh cone test is a test for finding the optimum dosage of plasticizers and superplasticizers for different types of cement. You know that the amount of plasticizers added to concrete ranges from 0.1 to 0.5 % of the total weight of cement. You have three tests to determine the optimum dosage content.

What is ASTM C109?

ASTM C109 is a compression test determine the compressive strength of hydraulic cement and other mortars. The results of the ASTM C109 compression test may be used to determine compliance with specifications. Further, the ASTM C109 test method is referenced by numerous other specifications and test methods.

What is a grout bag?

A grout bag looks similar to a pastry bag, and it is used much like a pastry bag is used when icing a cake. Shake the grout bag until the grout has settled to the bottom and there are no air pockets. Twist the top of the bag so the grout does not come out of the opposite end.

Which compound gives the Colour to the cement?

Iron oxide acts as a flux, in addition to being responsible for imparting colour to cement.

How do you calculate slump flow?

Remove the surplus concrete lying on-base place. Raise the cone vertically and allow the concrete to flow freely. Measure the final diameter of the concrete in two perpendicular directions and calculate the average of the two diameters. This is the slump flow in mm.

Why slump test is done?

The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows.

When do you use the flow cone test?

The flow cone test (Scanlon 1994) is intended for use in measuring the flow properties of grout for preplaced-aggregate concrete, but can also be used for other highly flowable grouts. The test is standardized in ASTM C939 and is considered appropriate for use in both the field and the lab.

When to use a flow cone for cement grout?

1. Scope 1.1 This test method covers a procedure, used both in the laboratory and in the field, for determining the time of efflux of a specified volume of fluid hydraulic cement grout through a standardized flow cone and used for preplaced-aggregate (PA) concrete; however, the test method may also be used for other fluid grouts.

What is the efflux time cone test method?

Efflux Time – Flow Cone Test Method – Fluidity – Grouts – Hydraulic Cement – Physical Properties – Physical Test – Preplaced-Aggregate Concrete – Rheological Properties Link to Active (This link will always route to the current Active version of the standard.)

How big is a flow cone for concrete?

The flow cone test has been adapted for measuring concrete (Ferraris 1999). The larger funnel used for concrete is 615 mm long with a 150 mm long outlet. The upper diameter of 230 mm narrows to 75 mm at the orifice. The device can be used for concretes with aggregate up to 20 mm.