Air Content of Freshly Mixed Concrete by the Chace Indicator
1.1. This approach of check covers the dedication of the air content material of freshly blended concrete through displacing the air with alcohol and staring at the alternate in stage of the liquid in a tube. the apparatus is mild and small, and the test technique requires only a few mins.
1.2. This approach has been located best for figuring out the approximate air content of freshly combined concrete. it need to not but be taken into consideration appropriate for replacing t 121mff 121 (gravimetric method), t 152 (stress technique), or t 196mff 196 (volumetric approach). in no case ought to the price received thru the use of this technique be everyday as figuring out the compliance of the air content material of concrete with the requirements of specs. the approach is maximum useful for determining whether or not the concrete has a low, medium, or excessive air content, and whether the air content within reason steady from batch to batch of concrete.
2. Referenced documents
2.1. AASHTO requirements:
• T 121mff 121, density (unit weight), yield, and air content (gravimetric) of concrete
• T 152, air content material of freshly combined concrete with the aid of the stress technique
• T 196m/t 196, air content material of freshly combined concrete by way of the volumetric method
Click below to download AASHTO T 199-00 pdf free
Click here to download AASHTO T 198-02 pdf free