Flow time in “V-Funnel
Flow time in “V-Funnel
Product Code
KBL-C171
V-Funnel
KBL-C171-1
Mini V-Funnel
Standards
EN 12350-9
The V Funnel test is crucial in the determination of self-compacting concrete flowability and viscosity. The material has gained vast acceptance to construction projects that require the construct to have high fluidity and easy placement without necessarily vibrating the concrete using mechanical compaction methods to densify it. The test basically defines the rate at which the concrete will pass through the funnel and by such a test point out its capacity to pass through narrow spaces and follow through even dense reinforcement.
This device is widely applied in laboratory conditions and to construction material testing to ensure SCC mixes meet necessary standards such as EN 12350-9. The V Funnel allows one to get an easy measure of how the concrete will perform under practical conditions, which will enable engineers and the project manager to control it accordingly with consistency and durability
How a V-Funnel Test Functions
The V Funnel test examines the flow time of SCC to determine its viscosity and filling ability. It is an apparatus whose primary component is the vertically mounted, V-shaped funnel with the discharge orifice at the bottom. For the test, about 12 liters of freshly mixed SCC is slowly poured into the funnel without tamping or compaction. The trapdoor at the bottom is opened, and the time that elapses to fully exhaust concrete flow from the funnel is measured as the flow time.
The test can be extended with a T5 measurement. In this extension, the concrete is allowed to settle in the funnel for five minutes longer than the elapsed time before the flow is measured. This helps identify segregation in the concrete since a high point of noticeable flow time increase marks significant material separation
The V Funnel test is very common in the testing of construction materials and laboratory testing to ensure that SCC flows around the reinforcements and through narrow spaces. It's a very important source of data regarding the work-ability of concrete, ensuring its quality and performance meet the required quality standards according to EN 12350-9 for modern construction projects
Applications of the V-Funnel
The V Funnel test takes the central place both during testing of construction materials and within the laboratory when appraising the performance of SCC. This is basically to assess its flow-ability and viscosity with regard to its filling of molds and flowing around reinforcement without the need for mechanical compaction; hence, considered an aspect that is essential to modern construction projects such as bridges, high-rise buildings, and precast concrete elements.
In construction testing, the appropriateness of a SCC mix in complexly form-worked or densely reinforced projects can be found through the V Funnel test. This test helps the engineers examine whether SCC mix is appropriate for use in projects with areas having densely reinforced spaces and if it will pass efficiently by placing between to very compactly reinforce the space. If concrete flows down the funnel with minimum resistance, then it's very good for areas with constrained space and will pass reasonably well under real conditions.
Laboratory testing determines the performance of SCC under standardized conditions by using the V Funnel. Controlled conditions allow engineers and material scientists to fine-tune mix design for optimum performance in preventing segregation or blockage during actual construction. SCC is compliant with industrial standards, especially EN 12350-9. It meets special demands in each project.