Roller Meter Concrete Air Test

This test s purpose is to get the air content of a sample of concrete using a pressure meter.

Roller meter concrete air test.

It is specifically required by astm and aashto standards for use with concrete mixes that contain lightweight aggregates. Readings of percent of air are directly obtained from the liquid level on the scale. 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.

It s good for sieve aggregate. If portions of undisturbed concrete are found the test is invalid. Go to the online aci course. This aluminum roll a meter is used to determine the air content of concrete mixes containing lightweight aggregate.

Used for the rolling method of measuring entrained. 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. Lightweight roll a meter is a volumetric air meter for testing concrete mixes. It has quizzes and two practice tests to prepare you for the test.

Set the roller meter upright and loosen the top to let the air pressure inside stabilize. Constructed of light weight aluminum. 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. Click the link below to watch a newer version of this video.

Constructed from cast aluminum with window graduated from 0 to 10 in 0 25 subgraduations. Lightweight concrete roll a meter is a lightweight version of the popular roller meter. 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.

H 2795p volumetair air meter. Press ur meter concrete air meter. H 2796a roll a meter air indicator. Dual clamping system with o ring seal for upper and lower chambers.

This method of testing can be used on any type of concrete lightweight regular weight or heavy weight. It is a simple and accurate device for measuring the air content of concrete mixes.