Concrete Air Test Procedure

This is a test required to pass the american c.

Concrete air test procedure.

This test method cannot be used for testing lightweight concrete because the aggregate in lightweight is too porous. Pkf construction on turnpike i 95 concrete technician. A sample of concrete is placed in the cylinder of an air meter in three layers each being fully compacted by hand or by vibration. Dampen with water and place on the slump plate.

Method a outlines the principle of the test. An air content test is required for checking air entrained concrete. By then the truck was empty and the crew had completed the work. Entrapped naturally occurring in the mix entrained intentionally added to the mix.

Collect a sample of concrete to perform the slum test. Stand firmly on the footpieces and fill 1 3 the volume of the cone with the sample. The pressure procedure of this test method gives substantially the same air contents as the other two test methods for concretes made with dense aggregates. The method of testing is given in bs en 12350 7 which replaces bs 1881.

It has quizzes and two practice tests to prepare you for the test. 3 2 this test method and test method c138 c138m and c173 c173m provide pressure gravimetric and volumetric procedures respectively for determining the air content of freshly mixed concrete. Go to the online aci course. Compact the concrete by rodding 25 times.

Two types of air. It is intended to be a supplement to reading the astm as well as a study tool for the aci exam. Procedure of slump test for concrete. It s good for sieve aggregate.

Astm c173 concrete air meter test volumetric method. It covers the reasons you are performing this test the equipment needed and the procedure of astm c231. This guide will teach you how to test air content of concrete with a type b pressure meter. The slump plate should be clean firm level and non absorbent.

See astm c173 air content by volumetric method. The owner wanted us to remove and replace the concrete. 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. Air entrained concrete is typically specified in areas of the country where frost related damage can occur.