Optimization of Partial Replacement of Fine Aggregate and Cement with Fly-Ash Type C in Portland Cement Concrete
Disciplines
Civil Engineering
Abstract (300 words maximum)
The positive impacts of fly ash on the performance of Portland cement concrete (PCC) have been well recognized, but few studies have addressed the potential use of fly ash as a partial replacement for fine aggregates. An experimental study was launched at the beginning of Fall 2023 to investigate the effect of Fly-Ash Type C (FATC) to partially replace the fine aggregate and cement in Portland cement concrete (PCC). The study will conduct a series of experiments with 4”x8” concrete cylinders substituting fine aggregates in PCC mixes with different percentages of FATC (5%, 10%, 15%, and 20%). Also, substituting cement with varying percentages of FATC(10%, 20%, 30%, and 40%). The main focus will be to monitor strength, workability, and durability. Control samples will be tested with virgin materials to establish the baseline data to compare the data with partially replaced PCC at different curing periods (7, 14, and 28 days) under water-cured conditions. This approach will provide valuable insights into how concrete behaves when mixed with our waste material. The test data will enable us to determine the optimal amount of FATC to replace fine aggregates and cement in PCC. The advantages of using recyclable FATC in concrete mixes, include reducing the amount of waste material that goes to landfills, and cost savings, by preserving the virgin raw materials. It is expected that some content of waste in the concrete mix will provide the same and/or higher strength compared to the control samples. Additionally, we expect to identify correlations related to resistivity under any conditions.
Academic department under which the project should be listed
SPCEET - Civil and Environmental Engineering
Primary Investigator (PI) Name
M. A. Karim
Optimization of Partial Replacement of Fine Aggregate and Cement with Fly-Ash Type C in Portland Cement Concrete
The positive impacts of fly ash on the performance of Portland cement concrete (PCC) have been well recognized, but few studies have addressed the potential use of fly ash as a partial replacement for fine aggregates. An experimental study was launched at the beginning of Fall 2023 to investigate the effect of Fly-Ash Type C (FATC) to partially replace the fine aggregate and cement in Portland cement concrete (PCC). The study will conduct a series of experiments with 4”x8” concrete cylinders substituting fine aggregates in PCC mixes with different percentages of FATC (5%, 10%, 15%, and 20%). Also, substituting cement with varying percentages of FATC(10%, 20%, 30%, and 40%). The main focus will be to monitor strength, workability, and durability. Control samples will be tested with virgin materials to establish the baseline data to compare the data with partially replaced PCC at different curing periods (7, 14, and 28 days) under water-cured conditions. This approach will provide valuable insights into how concrete behaves when mixed with our waste material. The test data will enable us to determine the optimal amount of FATC to replace fine aggregates and cement in PCC. The advantages of using recyclable FATC in concrete mixes, include reducing the amount of waste material that goes to landfills, and cost savings, by preserving the virgin raw materials. It is expected that some content of waste in the concrete mix will provide the same and/or higher strength compared to the control samples. Additionally, we expect to identify correlations related to resistivity under any conditions.