We will determine the feasibility of improved methods for determing air content in fresh concrete. we expect that a study of volume change with varying pressure and vacuum will lead to a method that will indicate both air content and void size, and yield air contents that t are unaffected by the… More

There is need for a device that nonintrusively measures moisture content of fresh and hardened concrete. its procedure must be quick and simple. it might also be used for measuring moisture in other materials, such as sand and soil. we propose using capacitance, microwave or conductivity tecnniques… More