Commonly called bugholes, surface air voids are small, regular or irregular cavities, usually less than 5/8 inch in diameter, caused by entrapment of air bubbles in the surface of formed concrete.

How to Vibrate Concrete. 1. Deposit concrete with a maximum lift thickness of about 20 in. Make lifts as level as possible and do not use the vibrator to move concrete horizontally.

Air-entrainment and recycled brick aggregate in concrete enhances freeze-thaw performance, providing a durable alternative ...

TRB hosted a webinar on Tuesday, October 26, 2021 from 1:00-2:30 PM Eastern that investigated requirements for the air-void system parameters of concrete used in highway pavements and structures.

CNF is extracted from wood pulp, making it both renewable and sustainable. When applied to concrete, it increases flowability ...

Large concrete floors found within high-rises contain a grid of steel beams, or rebar, for support, and weigh a significant amount. Using voids to reduce the amount of concrete decreases the ...

The Texas Supreme Court ruled Friday that Houston may not effectively void a state air pollution permit. The justices agreed with Southern Crushed Concrete that Houston's 2007 law restricting the ...

Microspheres are unlike air bubbles that can be easily popped or destroyed, and the 1%-by-volume admixture is up to 30% stronger than air-entrained concrete, which uses between 4% to 7% air.

A German construction project has saved an estimated 136 tonnes of carbon dioxide from entering the atmosphere by incorporating air pockets made of recycled plastic within its concrete slabs. The ...