A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of single and hybrid nanoparticles added concrete at ambient and elevated temperatures
https://orcid.org/0000-0002-9470-8557
https://orcid.org/0000-0003-3055-3450
Highlights Combined use of nanoparticles can be more effective in enhancing mechanical properties of concrete at ambient and elevated temperatures that single form. The most optimum mix to enhance mechanical properties was (NS + NA) with 1.5% hybrid combination. The microstructure of concrete can be significantly improved by increasing the percentage of nanomaterials from 0.5 to 1.5%. the decrease in residual compressive strength of control and nano-added concrete was highly significant, especially for 500 and 800 °C.
Abstract The main aim of this study is to investigate the effects of nano-SiO2 (NS), nano-Al2O3 (NA), nano-TiO2 (NT) and nano-Fe2O3 (NF) particles in single, binary, ternary, and quaternary combinations on compressive, splitting tensile, and flexural strengths of concrete. The residual compressive strength of control and nano-added concretes are also determined at 300, 500, and 800 °C elevated temperatures. Furthermore, X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses have been conducted to examine the chemical composition and microstructure of concrete samples. The main parameters investigated were the amount and various combinations of NS, NA, NT and NF, producing thirty-one concrete batches, one control and thirty NS, NA, NT and NF added concrete mixes. The total nanoparticle amounts in the concrete mixes of 0.5%, 1%, and 1.5% by weight of cement were studied. A total of 558 concrete specimens with nanoparticles were tested at 28 days to determine compressive, splitting tensile, flexural, and residual compressive strength of concretes at ambient and elevated temperatures. It can be clearly concluded that NS and NA particles are more effective than NT and NF particles in improving the mechanical properties of concrete. The largest increase in compressive, splitting tensile, and flexural strength was obtained for 1.5% of NS and NA hybrid combination as 13.95%, 18.55%, and 21.88%, respectively. Furthermore, the residual compressive strength of single and hybrid nano-added concrete specimens significantly reduced, especially at 800 °C. Although the largest decrease in residual compressive strength of 57.65% was recorded for control concrete, the lowest reduction of 41.59% was observed for concrete with 1.5% of NS and NA hybrid combination at 800 °C.
Performance of single and hybrid nanoparticles added concrete at ambient and elevated temperatures
https://orcid.org/0000-0002-9470-8557
https://orcid.org/0000-0003-3055-3450
Highlights Combined use of nanoparticles can be more effective in enhancing mechanical properties of concrete at ambient and elevated temperatures that single form. The most optimum mix to enhance mechanical properties was (NS + NA) with 1.5% hybrid combination. The microstructure of concrete can be significantly improved by increasing the percentage of nanomaterials from 0.5 to 1.5%. the decrease in residual compressive strength of control and nano-added concrete was highly significant, especially for 500 and 800 °C.
Abstract The main aim of this study is to investigate the effects of nano-SiO2 (NS), nano-Al2O3 (NA), nano-TiO2 (NT) and nano-Fe2O3 (NF) particles in single, binary, ternary, and quaternary combinations on compressive, splitting tensile, and flexural strengths of concrete. The residual compressive strength of control and nano-added concretes are also determined at 300, 500, and 800 °C elevated temperatures. Furthermore, X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses have been conducted to examine the chemical composition and microstructure of concrete samples. The main parameters investigated were the amount and various combinations of NS, NA, NT and NF, producing thirty-one concrete batches, one control and thirty NS, NA, NT and NF added concrete mixes. The total nanoparticle amounts in the concrete mixes of 0.5%, 1%, and 1.5% by weight of cement were studied. A total of 558 concrete specimens with nanoparticles were tested at 28 days to determine compressive, splitting tensile, flexural, and residual compressive strength of concretes at ambient and elevated temperatures. It can be clearly concluded that NS and NA particles are more effective than NT and NF particles in improving the mechanical properties of concrete. The largest increase in compressive, splitting tensile, and flexural strength was obtained for 1.5% of NS and NA hybrid combination as 13.95%, 18.55%, and 21.88%, respectively. Furthermore, the residual compressive strength of single and hybrid nano-added concrete specimens significantly reduced, especially at 800 °C. Although the largest decrease in residual compressive strength of 57.65% was recorded for control concrete, the lowest reduction of 41.59% was observed for concrete with 1.5% of NS and NA hybrid combination at 800 °C.
Performance of single and hybrid nanoparticles added concrete at ambient and elevated temperatures
https://orcid.org/0000-0002-9470-8557
https://orcid.org/0000-0003-3055-3450
Highlights Combined use of nanoparticles can be more effective in enhancing mechanical properties of concrete at ambient and elevated temperatures that single form. The most optimum mix to enhance mechanical properties was (NS + NA) with 1.5% hybrid combination. The microstructure of concrete can be significantly improved by increasing the percentage of nanomaterials from 0.5 to 1.5%. the decrease in residual compressive strength of control and nano-added concrete was highly significant, especially for 500 and 800 °C.
Abstract The main aim of this study is to investigate the effects of nano-SiO2 (NS), nano-Al2O3 (NA), nano-TiO2 (NT) and nano-Fe2O3 (NF) particles in single, binary, ternary, and quaternary combinations on compressive, splitting tensile, and flexural strengths of concrete. The residual compressive strength of control and nano-added concretes are also determined at 300, 500, and 800 °C elevated temperatures. Furthermore, X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses have been conducted to examine the chemical composition and microstructure of concrete samples. The main parameters investigated were the amount and various combinations of NS, NA, NT and NF, producing thirty-one concrete batches, one control and thirty NS, NA, NT and NF added concrete mixes. The total nanoparticle amounts in the concrete mixes of 0.5%, 1%, and 1.5% by weight of cement were studied. A total of 558 concrete specimens with nanoparticles were tested at 28 days to determine compressive, splitting tensile, flexural, and residual compressive strength of concretes at ambient and elevated temperatures. It can be clearly concluded that NS and NA particles are more effective than NT and NF particles in improving the mechanical properties of concrete. The largest increase in compressive, splitting tensile, and flexural strength was obtained for 1.5% of NS and NA hybrid combination as 13.95%, 18.55%, and 21.88%, respectively. Furthermore, the residual compressive strength of single and hybrid nano-added concrete specimens significantly reduced, especially at 800 °C. Although the largest decrease in residual compressive strength of 57.65% was recorded for control concrete, the lowest reduction of 41.59% was observed for concrete with 1.5% of NS and NA hybrid combination at 800 °C.
Performance of single and hybrid nanoparticles added concrete at ambient and elevated temperatures
Guler, Soner (author) / Türkmenoğlu, Zehra Funda (author) / Ashour, Ashraf (author)
2020-03-20
Article (Journal)
Electronic Resource
English
Performance of high strength concrete filled steel columns at ambient and elevated temperatures
| British Library Conference Proceedings | 2001
Behaviour of concrete floor slabs at ambient and elevated temperatures
| British Library Online Contents | 2007
Behaviour of concrete floor slabs at ambient and elevated temperatures
| British Library Conference Proceedings | 2007
Small-scale concrete slab tests at ambient and elevated temperatures
| Online Contents | 2007