Subject Area
Civil and Environmental Engineering
Article Type
Original Study
Abstract
The influence of elevated temperatures on the properties of concrete is significant for study on fire resistance as well as for identifying how isolated vessels, chimneys, and containers in nuclear reactors respond under service conditions. The present experimental investigation assesses the properties of concrete containing Metakaolin (MK) that has been exposed to elevated temperatures. For this purpose, seven concrete mixes were prepared, including one control mix, three mixes containing metakaolin (10, 15, and 20%) as a replacement by weight of cement. And three other mixes in the same proportions as a cement additive. After 28 days, the specimens exposed to heating levels of (200, 400, 600, and 800 oC) for duration of one hour. Weight loss, water absorption, compressive strength, and splitting tensile strength of concrete have been determined. Test results indicated that, 15% MK as a replacement from cement by weight is the optimum ratio. Also, 10% MK as an additive on cement by weight is the optimum. Using 10% MK as an additive on cement, the percentage of enhancement in compressive strength reaches 25.7 & 57 % at room and 800 oC respectively.
Keywords
Concrete; Supplementary Cementitious Materials; Metakaolin; Elevated Temperatures; Physical Properties; Mechanical Properties
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Abdullah, Ahmed F. and Rashwan, Mohamed M.
(2023)
"Effect of Elevated Temperatures on the Properties of Concrete Containing Metakaolin,"
Mansoura Engineering Journal: Vol. 48
:
Iss.
4
, Article 3.
Available at:
https://doi.org/10.58491/2735-4202.3051
