Matches in SemOpenAlex for { <https://semopenalex.org/work/W4366437219> ?p ?o ?g. }
- W4366437219 abstract "Changing concrete ingredients significantly affects its performance due to changing the type of hydration products formed. The stability of these hydration products will dominate concrete impact behavior before and after exposure to fire. Limited research had explored the role of activators, as the main ingredient of alkali-activated slag concrete (AASC), on impact performance. Hence, this study highlights the effects of activator characteristics on the impact behavior of AASC at an ambient condition (23°C) and after exposure to elevated temperatures (200°C, 400°C, and 600°C). Conventional ordinary portland cement (OPC) concrete was also tested for general performance comparison. Besides the drop weight impact test, compressive and indirect splitting tensile strength, shrinkage, ultrasonic pulse velocity and water absorption tests were conducted to evaluate AASC performance. In addition, thermogravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to confirm and analyze findings. Results confirmed the better impact performance of AASC compared to OPC concrete. Activator concentrations showed contrary effects on AASC performance at ambient and elevated temperatures. High activation levels improved strength and impact capacity at ambient temperature, showing lower internal defects and higher hydration product formation. Conversely, lowering the activation level at elevated temperatures was preferable and resulted in a higher residual strength and impact absorption capacity. This was ascribed to the high unreacted slag particle crystallization to akermanite at higher temperatures, leading to strength gain, fewer hydration products to decompose, and high microstructure ductility that accommodated the thermal incompatibility. Hence, designing AASC while focusing only on maximizing strength can be misleading based on the targeted performance and exposure conditions." @default.
- W4366437219 created "2023-04-21" @default.
- W4366437219 creator A5040145758 @default.
- W4366437219 creator A5049335742 @default.
- W4366437219 date "2023-07-01" @default.
- W4366437219 modified "2023-10-01" @default.
- W4366437219 title "Effect of Activator Concentrations on the Postfire Impact Behavior of Alkali-Activated Slag Concrete" @default.
- W4366437219 cites W1153116277 @default.
- W4366437219 cites W1963899854 @default.
- W4366437219 cites W1970631943 @default.
- W4366437219 cites W1976742163 @default.
- W4366437219 cites W1977397715 @default.
- W4366437219 cites W1981205379 @default.
- W4366437219 cites W1984293672 @default.
- W4366437219 cites W1986408956 @default.
- W4366437219 cites W1990668548 @default.
- W4366437219 cites W1996806206 @default.
- W4366437219 cites W2001664179 @default.
- W4366437219 cites W2003777712 @default.
- W4366437219 cites W2010653115 @default.
- W4366437219 cites W2016486273 @default.
- W4366437219 cites W2016567938 @default.
- W4366437219 cites W2016647210 @default.
- W4366437219 cites W2018273923 @default.
- W4366437219 cites W2019251347 @default.
- W4366437219 cites W2022500058 @default.
- W4366437219 cites W2023819260 @default.
- W4366437219 cites W2024545280 @default.
- W4366437219 cites W2039283528 @default.
- W4366437219 cites W2040180618 @default.
- W4366437219 cites W2042619999 @default.
- W4366437219 cites W2047036241 @default.
- W4366437219 cites W2047083324 @default.
- W4366437219 cites W2048798797 @default.
- W4366437219 cites W2048987671 @default.
- W4366437219 cites W2049698421 @default.
- W4366437219 cites W2050545919 @default.
- W4366437219 cites W2052616809 @default.
- W4366437219 cites W2053887874 @default.
- W4366437219 cites W2054952359 @default.
- W4366437219 cites W2057826965 @default.
- W4366437219 cites W2058697912 @default.
- W4366437219 cites W2061640401 @default.
- W4366437219 cites W2062930292 @default.
- W4366437219 cites W2063884748 @default.
- W4366437219 cites W2064916228 @default.
- W4366437219 cites W2069772794 @default.
- W4366437219 cites W2078287527 @default.
- W4366437219 cites W2078616134 @default.
- W4366437219 cites W2085269008 @default.
- W4366437219 cites W2086355497 @default.
- W4366437219 cites W2088285551 @default.
- W4366437219 cites W2090733702 @default.
- W4366437219 cites W2091773724 @default.
- W4366437219 cites W2093431908 @default.
- W4366437219 cites W2098422296 @default.
- W4366437219 cites W2105003203 @default.
- W4366437219 cites W2137967003 @default.
- W4366437219 cites W2143106913 @default.
- W4366437219 cites W2143363401 @default.
- W4366437219 cites W2165547997 @default.
- W4366437219 cites W2186824046 @default.
- W4366437219 cites W2359678336 @default.
- W4366437219 cites W2472364381 @default.
- W4366437219 cites W2514028198 @default.
- W4366437219 cites W2518391627 @default.
- W4366437219 cites W2521803661 @default.
- W4366437219 cites W2601385792 @default.
- W4366437219 cites W2613205740 @default.
- W4366437219 cites W2727382516 @default.
- W4366437219 cites W2760568576 @default.
- W4366437219 cites W2765690108 @default.
- W4366437219 cites W2765897634 @default.
- W4366437219 cites W2766948533 @default.
- W4366437219 cites W2841416909 @default.
- W4366437219 cites W2883259117 @default.
- W4366437219 cites W2885677382 @default.
- W4366437219 cites W2888088746 @default.
- W4366437219 cites W2893087337 @default.
- W4366437219 cites W2895938721 @default.
- W4366437219 cites W2900484727 @default.
- W4366437219 cites W2911738203 @default.
- W4366437219 cites W2985771224 @default.
- W4366437219 cites W3026208349 @default.
- W4366437219 cites W3035551840 @default.
- W4366437219 cites W3143931188 @default.
- W4366437219 cites W3154752314 @default.
- W4366437219 cites W3182783380 @default.
- W4366437219 cites W3213549925 @default.
- W4366437219 cites W4285097903 @default.
- W4366437219 cites W90696332 @default.
- W4366437219 cites W982878096 @default.
- W4366437219 doi "https://doi.org/10.1061/jmcee7.mteng-14605" @default.
- W4366437219 hasPublicationYear "2023" @default.
- W4366437219 type Work @default.
- W4366437219 citedByCount "1" @default.
- W4366437219 countsByYear W43664372192023 @default.
- W4366437219 crossrefType "journal-article" @default.
- W4366437219 hasAuthorship W4366437219A5040145758 @default.
- W4366437219 hasAuthorship W4366437219A5049335742 @default.