Roller Meter Concrete Air Test

This aluminum roll a meter is used to determine the air content of concrete mixes containing lightweight aggregate.

Roller meter concrete air test.

H 2795p volumetair air meter. It has quizzes and two practice tests to prepare you for the test. Constructed from cast aluminum with window graduated from 0 to 10 in 0 25 subgraduations. Astm c173 concrete air meter test volumetric method.

Constructed of light weight aluminum. It is specifically required by astm and aashto standards for use with concrete mixes that contain lightweight aggregates. Press ur meter concrete air meter. It is a simple and accurate device for measuring the air content of concrete mixes.

Readings of percent of air are directly obtained from the liquid level on the scale. It s good for sieve aggregate. Used for the rolling method of measuring entrained. Volumetric method aci technician workbo.

Lightweight concrete roll a meter is a lightweight version of the popular roller meter. This method of testing can be used on any type of concrete lightweight regular weight or heavy weight. It is required for use with lightweight aggregate concrete but can reliably be used with any mix. Let the meter sit while the air rises to the top and the liquid level stabilizes.

If portions of undisturbed concrete are found the test is invalid. H 2796a roll a meter air indicator. Click the link below to watch a newer version of this video. In the meter you have a known volume of air at a known pressure in a sealed air pot with an unknown volume of air being contained inside the sample of wet concrete.

Set the roller meter upright and loosen the top to let the air pressure inside stabilize. The liquid level is considered stable when it doesn t change more than 0 25 air within a 2 minute period. Lightweight roller meter determines entrained air content of fresh mix concrete fly ash and other lightweight aggregates. This test s purpose is to get the air content of a sample of concrete using a pressure meter.

Go to the online aci course. Determine air content specific gravity and free moisture test of aggregates.