PERFORMANCE OF METAKAOLIN BASED GEOPOLYMER CONCRETE AT ELEVATED TEMPERATURE
PERFORMANCE OF METAKAOLIN BASED GEOPOLYMER CONCRETE AT ELEVATED TEMPERATURE
No Thumbnail Available
Date
2020-07-03
Authors
GAMBO, S. IBRAHIM, K. ALIYU, A. IBRAHIM, A.G. ABDULSALAM, H.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Due to the carbon dioxide emission arising from the production of cement, alternative concrete that
is environmentally friendly such as metakaolin geopolymer concrete have been developed.
However, the performance of metakaolin based geopolymer concrete (MKGC) when exposed to
aggressive environment particularly elevated temperature has not been investigated. Therefore,
this paper assessed the performance of MKGC exposed to elevated temperatures. MKGC cube
specimens of grade 25 were produced using a mix ratio of 1:1.58:3.71.After preparing the
specimens, they were placed in an electric oven at a temperature of 60°C for 24 hours. Thereafter,
the specimens were stored in the laboratory at ambient temperature for 28 days. The specimens
were then exposed to elevated temperatures of 200, 400, 600 and 800° C. After exposure to elevated
temperatures, the MKGC specimens were subjected to compressive strength, water absorption and
abrasion resistance tests. Results show that at 600 and 800°C, the MKGC lost a compressive
strength of 59.69% and 71.71% respectively. Higher water absorption and lower abrasion
resistance were also observed.
Description
Keywords
Citation
J'3'4' DEPARTMENT OF BUILDING, AHMADU BELLO UNIVERSITY, ZARIA. KADUNA STATE, NIGERIA DEPARTMENT OF QUANTITY SURVEYING, UNIVERSITY OF ILORIN, ILORIN, KWARA STATE, NIGERIA CENTER FOR RENEWABLE ENERGY, UMARU MUSA YAR'ADUA UNIVERSITY, KATSINA, KATSINA STATE, NIGERIA Email addresses:1 gambomscl2845@gmail.com, 2 ibrokb@yahoo.com,3 alkasimalyu206@gmail.com, 4 getsomscl2012@gmail.com,5 hassandaura@gmail.com