TY  - JOUR
Y1  - 2024///
A1  - Razak, S.N.A.
A1  - Shafiq, N.
A1  - Guillaumat, L.
A1  - Lohana, V.K.
A1  - Farhan, S.A.
A1  - Shafee, F.A.A.
JF  - Lecture Notes in Civil Engineering
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184285026&doi=10.1007%2f978-981-99-1111-0_29&partnerID=40&md5=69a076c77eedd6129ed9cf4cbb754724
EP  - 349
VL  - 324
AV  - none
N2  - Fire resistance of geopolymer concrete is superior to that of ordinary Portland cement (OPC)-based concrete. However, vulnerability of geopolymer concrete when exposed to real fire events is an issue. In view of the issue, a comparative evaluation of the fire resistances of OPC-based and geopolymer concrete was performed. OPC-based and fly-ash (FA)-based geopolymer concrete specimens were prepared with a standard strength grade of 60 MPa. A laboratory-scale simulation of real fire events was conducted by exposing the specimens to fire at 200, 500 and 1000 °C for 2 h. Fire resistances of the specimens were evaluated by performing tests to determine mass loss and residual compressive strength and thermogravimetric analyses (TGA) before and after exposure to fire. Due to water evaporation, the OPC- based concrete incurred mass losses of 2.41, 4.45, and 7.7 when exposed to fire at 200, 500, and 1000 °C, respectively. Similarly, when exposed to fire at 200, 500, and 1000 °C, the FA-based concrete had minor mass losses of 1.4, 1.96, and 2.59, respectively. According to the TGA analysis, the weight loss of geopolymer concrete was slightly higher than that of OPC up to 400 °C due to evaporation of water from the sample. At higher temperatures, the total weight loss of OPC is 6.1 whereas geopolymer is 4.5, indicating that geopolymer concrete was more chemically stable than OPC following exposure to high temperature fire. © 2024, Institute of Technology PETRONAS Sdn Bhd.
N1  - cited By 0; Conference of 1st International Conference on Emerging Smart Cities, ICESC 2022 ; Conference Date: 1 December 2022 Through 2 December 2022; Conference Code:306839
SP  - 339
ID  - scholars20187
TI  - Effect of Fire on High-Strength Fly-Ash-Based Geopolymer Concrete
KW  - Compressive strength; Evaporation; Fire resistance; Geopolymers; High performance concrete; Inorganic polymers; Portland cement; Thermogravimetric analysis
KW  -  Cement-based; Exposed to; Fire event; Geopolymer concrete; Highest temperature; Mass loss; Ordinary Portland cement; Real fire; Residual compressive strength; Thermo-gravimetric
KW  -  Fly ash
ER  -