A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of Recycled Coarse Aggregate in Micro-silica Fume Concrete: An Experimental Assessment
Over the last decade, recycled coarse aggregate (RCA) for road and concrete construction has gained increased utilization. The sky-rocketing daily demand for concrete has led to a corresponding increase in demand for natural coarse aggregate (NCA), which has stimulated the research on alternative sustainable solution using RCA in structural concrete. This present study explores the use of RCA in two phases Fist experimental phase investigates the effect of RCA to make high strength concrete, supplementing it with micro-silica fume (MSF). Characterization of NCA and RCA was done to determine their suitability as a construction material using five concrete mixes consisting of 0, 25, 50, 75, and 100% replacement (by volume) of NCA with RCA. This was made using a targeted water to cement (w/c) ratio of 0.4 and tested after curing periods of 7, 14, and 28 days for compressive strength and 28 days for splitting tensile strength. Results show that the maximum compressive strength was observed at a mix of 50% RCA + 50% NCA. Furthermore, the second experimental phase analyzed the required amount of cement in concrete made from RCA to reach optimal strength. Results showed the strength of the concrete produced from both NCA and RCA increased with increasing cement content. It was also observed that while the improvement in strength of the concrete made from NCA increases consistently at about 6% for every additional 14.83 kg/m3 of cement, the improvement in strength of concrete made from RCA gradually decreased. Overall, the use of RCA and NCA proved effective as an alternative substitute to the conventional concrete produced from cement.
Performance of Recycled Coarse Aggregate in Micro-silica Fume Concrete: An Experimental Assessment
Over the last decade, recycled coarse aggregate (RCA) for road and concrete construction has gained increased utilization. The sky-rocketing daily demand for concrete has led to a corresponding increase in demand for natural coarse aggregate (NCA), which has stimulated the research on alternative sustainable solution using RCA in structural concrete. This present study explores the use of RCA in two phases Fist experimental phase investigates the effect of RCA to make high strength concrete, supplementing it with micro-silica fume (MSF). Characterization of NCA and RCA was done to determine their suitability as a construction material using five concrete mixes consisting of 0, 25, 50, 75, and 100% replacement (by volume) of NCA with RCA. This was made using a targeted water to cement (w/c) ratio of 0.4 and tested after curing periods of 7, 14, and 28 days for compressive strength and 28 days for splitting tensile strength. Results show that the maximum compressive strength was observed at a mix of 50% RCA + 50% NCA. Furthermore, the second experimental phase analyzed the required amount of cement in concrete made from RCA to reach optimal strength. Results showed the strength of the concrete produced from both NCA and RCA increased with increasing cement content. It was also observed that while the improvement in strength of the concrete made from NCA increases consistently at about 6% for every additional 14.83 kg/m3 of cement, the improvement in strength of concrete made from RCA gradually decreased. Overall, the use of RCA and NCA proved effective as an alternative substitute to the conventional concrete produced from cement.
Performance of Recycled Coarse Aggregate in Micro-silica Fume Concrete: An Experimental Assessment
Lecture Notes in Civil Engineering
Agnihotri, Arvind Kumar (editor) / Reddy, Krishna R. (editor) / Bansal, Ajay (editor) / Disu, Adedeji A. (author) / Kolay, Prabir (author) / Momoh, Sufiyanu O. (author)
International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering ; 2023 ; Jalandhar, India
2025-02-17
14 pages
Article/Chapter (Book)
Electronic Resource
English
Recycled coarse aggregate (RCA) , Micro-silica fume (MSF) , Natural coarse aggregate (NCA) , Water cement ratio (w/c) , Compressive strength , Splitting tensile strength Engineering , Geoengineering, Foundations, Hydraulics , Environment, general , Science, multidisciplinary , Environmental Engineering/Biotechnology
Mechanical Properties of Concrete with Silica Fume and Coarse Recycled Aggregate Concrete
| DOAJ | 2020
Performance of Portland/Silica Fume Cement Concrete Produced with Recycled Concrete Aggregate
| Online Contents | 2012
Performance of Portland/Silica Fume Cement Concrete Produced with Recycled Concrete Aggregate
| British Library Online Contents | 2012