GB/T 50080-2016 Ordinary Concrete V-Funnel Test Device

GB/T 50080-2016ordinary concreteVFunnel-shaped funnel
　　
　　GB/T 50080-2016ordinary concreteVThe funnel is used to measure the viscosity and anti segregation properties of concrete,Applicable to the determination of viscosity and anti segregation performance of self compacting concrete of various grades.
　　
Main technical parameters:
　　
　　1.Funnel capacity:10L
　　
　　2.Funnel mouth size:515*75mm
　　
　　3.Funnel bottom size:65*75x150mm
　　
Self compacting concreteVFunnel test method
　　
This method is used to measure the viscosity and anti segregation properties of concrete, and is suitable for determining the viscosity and anti segregation properties of various grades of concrete.
　　
The testing tool should meet the following requirements
　　
1.VThe shape and internal dimensions of the funnel are shown in the figure, and the capacity of the funnel is approximately10LThe inner surface of the funnel should be processed and trimmed to form a smooth shape. The material used for making the funnel can be metal or plastic. A quick opening and water tight bottom cover funnel should be attached at the outlet of the funnel. The upper edge should be machined flat and constructed smoothly
　　
　　2.The platform supporting the funnel should have an adjustment device to ensure that the platform is level and easy to transport
　　
　　3.Concrete feeding containers should be prepared,about5Lcapacity;Plastic bucket with handle for material receiving container,about12LWater bucket with capacity;The flat scraper can accurately measure the flatness of the top surface of the concrete0.1SStopwatch and wet cloth, etc
　　
The test method shall comply with the following regulations
　　
1.VAfter rinsing the funnel with clean water, place it on a stand so that its top surface is horizontal and the body side is vertical. Ensure that the funnel is stable and wipe the inner surface of the funnel with a twisted wet cloth to keep it moist
　　
　　2.Before filling the concrete sample into the funnel, it is necessary to confirm whether the bottom cover of the funnel outlet has been closed before placing the concrete receiving container below the funnel outlet.
　　
　　3.Fill the container for concrete feeding with concrete samples smoothly from the upper end of the funnel until it is full
　　
　　4.Use a scraper to level the top surface of the concrete along the upper end of the funnel
　　
　　5.Scrape the top surface of the concrete flat and wait for it to settle1minAfter opening the bottom cover of the funnel discharge port, use a stopwatch to measure the time from opening the cover to the moment when all the concrete inside the funnel flows out accurately0.1sAt the same time, observe and record whether the concrete is blocked or not.
　　
The test results should meet the following requirements
　　
　　1.The measurement of concrete flow time should be accurate to0.1s
　　
　　2.In addition to measuring the flow time, the flow condition of concrete during the flow process should also be recorded, such as whether there is any blockage
GB/T 50080-2016Test Instrument for Performance Test of Ordinary Concrete Mixtures

Standard Test Method for Performance of Ordinary Concrete Mixtures（GB/T 50080-2016The current standard will4moon1Starting from [date], the new standard has added professional terms and symbols, as well as many testing techniques. In particular, the precision requirements for the amount of concrete materials used in testing and mixing have doubled compared to the original standard. The purpose of studying and promoting the new standards for concrete testing this time is to further standardize the testing methods for ordinary concrete mixtures, improve testing accuracy, make the test results representative, accurate, and reproducible, and to have a unified concrete mixture performance testing method when inspecting or controlling the quality of concrete mixtures, prefabricated concrete components, and concrete engineering, ensuring the quality of concrete mixtures, prefabricated concrete components, and concrete engineering.

GB/T 50080-2016Standard Test Method for Performance of Ordinary Concrete Mixtures - Laboratory Instrument Configuration

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