Concrete Air Test Astm

Pressure method aci technician workbook.

Concrete air test astm. Click the link below to watch a newer version of this video. Entrapped naturally occurring in the mix entrained intentionally added to the mix. Concrete air meters and indicators for air entrainment are used for determination of air content specific gravity and free moisture test of aggregates. 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.

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. Go to the online aci course. Astm c173 concrete air meter test volumetric method. Concrete air meters measure the air content of fresh concrete in accordance with astm and aashto standards test methods.

See astm c173 air content by volumetric method. This guide will teach you how to test air content of concrete with a type b pressure meter. It covers the reasons you are performing this test the equipment needed and the procedure of astm c231. It is intended to be a supplement to reading the astm as well as a study tool for the aci exam.

This method of testing can be used on any type of concrete lightweight regular weight or heavy weight. This is a test required to pass the american c. It has quizzes and two practice tests to prepare you for the test. 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. C143 c143m test method for slump of hydraulic cement concrete. C31 c31m practice for making and curing concrete test specimens in the field. This test method cannot be used for testing lightweight concrete because the aggregate in lightweight is too porous.

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. C172 c172m practice for sampling freshly mixed concrete. Air entrained concrete is typically specified in areas of the country where frost related damage can occur. It s good for sieve aggregate.