Entrained Air Void System to Reduce Potential for Freeze-Thaw Damage to Concrete

Cyclic changes in temperature, which cause liquid water to alternatively freeze and thaw within saturated, hardened concrete, can damage the concrete when the water within capillary pores and microcracks in the cement paste freezes and turns to ice. Concrete paste with a high water/cement ratio can be especially susceptible to freeze-thaw damage, since it contains a correspondingly high volume of capillary pores within which liquid water can reside.

ATL Receives Accreditation for ASTM C 1260

ATL requested accreditation for ASTM C 1260: Standard Test Method for Potential Alkali Reactivity of Aggregates. Due to the current COVID-19 health precautions, CCRL performed the inspection through Microsoft teams video conferencing.