Rethinking Testing for Concrete Pavements
water to cement ratio. Why Do We Add Air to Concrete? •Airentrained bubbles are a key to the freezethaw resistance of concrete Air volume = freezethaw performance •Smaller bubbles are more effective in providing freezethaw resistance and have less of an impact on our concrete than larger bubbles. If f'c> 5,000 psi then these recommendations can be reduced by 1% ACI 318. Do you know ...