Ground Granulated Blast Furnace Slag

详情

Generally, GGBFS concretes develop strength more slowly than Ordinary Portland Cement (OPC) concretes, but will exhibit higher strength after one year. GGBFS concretes are also less permeable, but they can develop abnormal air void systems. The performance of GGBFS concretes depends not only on the amount of GGBFS used, but also on the chemical composition of the other materials in the mixture. Three different GGBFS replacement levels will be studied in this part of the project: 0%, *0%, and *0%. Thirty percent is the most commonly used replacement level. This means that of the cemetitious material in the concrete, *0% is GGBFS, and *0% is OPC. The project will investigate the performance versus a **0% OPC concrete (0% GGBFS), and will also determine whether a *0% level is a reasonable replacement level. Along with the GGBFS replacement level variable, four different cement brands and two coarse aggregate types will be used to determine its performance with different materials. There will also be mixtures created and cured in *0o F conditions to determine the performance of GGBFS concrete at lower temperatures.