Thermal and Mechanical Properties of Geopolymers Exposed to High Temperature: A Literature Review

Table 7

Stress-strain relationship of FA geopolymers at different temperatures.

Temperature (°C)	23, 100, and 200	290	380	520	575	680
Peak stress (MPa)	74	112	104	124	116	122
Peak strain (mm/mm)	0.02	0.01	0.02	0.03	0.07	0.45
Stress decline trend	When the peak stress is reached, the sample stress at all temperatures decreases rapidly and linearly.