Roller Meter Concrete Air Test

Disassemble the meter empty the base and examine the contents to be sure that there are no portions of undisturbed tightly packed concrete in the base.

Roller meter concrete air test.

Lightweight concrete roll a meter is a lightweight version of the popular roller meter. It is a simple and accurate device for measuring the air content of concrete mixes. It is required for use with lightweight aggregate concrete but can reliably be used with any mix. This method of testing can be used on any type of concrete lightweight regular weight or heavy weight.

The liquid level is considered stable when it doesn t change more than 0 25 air within a 2 minute period. Constructed of light weight aluminum. H 2796a roll a meter air indicator. H 2795p volumetair air meter.

Dual clamping system with o ring seal for upper and lower chambers. This test s purpose is to get the air content of a sample of concrete using a pressure meter. Set the roller meter upright and loosen the top to let the air pressure inside stabilize. This aluminum roll a meter is used to determine the air content of concrete mixes containing lightweight aggregate.

Let the meter sit while the air rises to the top and the liquid level stabilizes. It has quizzes and two practice tests to prepare you for the test. Volumetric method aci technician workbo. Press ur meter concrete air meter.

Astm c173 concrete air meter test volumetric method. Click the link below to watch a newer version of this video.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. It is specifically required by astm and aashto standards for use with concrete mixes that contain lightweight aggregates.

Constructed from cast aluminum with window graduated from 0 to 10 in 0 25 subgraduations. Lightweight roller meter determines entrained air content of fresh mix concrete fly ash and other lightweight aggregates. Lightweight roll a meter is a volumetric air meter for testing concrete mixes. Determine air content specific gravity and free moisture test of aggregates.

Readings of percent of air are directly obtained from the liquid level on the scale. Used for the rolling method of measuring entrained.