Concrete Air Test Astm

This guide will teach you how to test air content of concrete with a type b pressure meter.

Concrete air test astm. Hence this test method can be used to develop data to estimate the likelihood of damage due to cyclic freezing and thawing or to explain why it has occurred. Overview of astm c231 standard test method for air content of freshly mixed concrete by the pressure method. C172 c172m practice for sampling freshly mixed concrete. It has quizzes and two practice tests to prepare you for the test.

See astm c173 air content by volumetric method. Two types of air. Go to the online aci course. This method of testing can be used on any type of concrete lightweight regular weight or heavy weight.

Air entrained concrete is typically specified in areas of the country where frost related damage can occur. The measurement of air content in fresh concrete of normal density is typically performed using the pressure method another useful test is astm c 173 however the pressure method is frequently preferred because it is relatively fast. Pressure method aci technician workbook. Click the link below to watch a newer version of this video.

It is intended to be a supplement to reading the astm as well as a study tool for the aci exam. Concrete air meters and indicators are astm 231 compliant and are part of a complete line of concrete testing equipment available from humboldt. It s good for sieve aggregate. Concrete air meters and indicators for air entrainment are used for determination of air content specific gravity and free moisture test of aggregates.

C143 c143m test method for slump of hydraulic cement concrete. This is a test required to pass the american c. Gilson offers a selection of air meters for use in testing fresh concrete specimens or concrete mixes lightweight aggregate concrete or other lightweight mixes. C138 c138m test method for density unit weight yield and air content gravimetric of concrete.

Entrapped naturally occurring in the mix entrained intentionally added to the mix. 5 1 the parameters of the air void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to damage by freezing and thawing. Astm c173 concrete air meter test volumetric method. This test method cannot be used for testing lightweight concrete because the aggregate in lightweight is too porous.