Fly Ash in Cold Weather Concrete - Technical Bulletin

Cold Weather can have detrimental effects on concrete construction unless adjustments are made and precautions are taken to ensure acceptable performance. However, placing concrete in cold weather provides an opportunity for better quality, as cooler initial concrete temperatures will typically result in higher ultimate strengths. Fly ash in conjunction with liquid admixtures such as calcium chloride, non-chloride accelerators, and mid-range water reducers will further enhance the strength of concrete in cooler weather.