| This research investigates the effects of interrupting curing of high-strength concrete (HSC) specimens at an early age by freezing. Each mix used had at least one of three mineral admixtures; silica fume, fly ash, and ground granulated blast furnace slag.; A minimum target compression strength (f′c) of 69.8 Mpa (10,000psi) at 56 days was used. Specimens were cured under both moist curing and sealed curing conditions.; A 24-hour freeze was conducted on representative specimen sets at different stages of curing. HSC specimens were tested in compression at 28 days for all sets subjected to freezing including control sets from each mix.; All the concrete specimen sets tested at 28 days had at least one cylinder test as high or higher than the required f′c of 68.95 Mpa (10,000 psi). |
