Prediction of the Strength Properties of Carbon Fiber-Reinforced Lightweight Concrete Exposed to the High Temperature Using Artificial Neural Network and Support Vector Machine

Table 1

The chemical properties of cement and silica fume.

Bulk oxide	% by mass
	Portland cement	Silica fume
SiO2	21.12	91
Al2O3	5.62	0.58
Fe2O3	3.24	0.24
CaO	62.94	0.71
MgO	2.73	0.33
LOI	1.42	1.84
Specific surface area (cm^2/g)	3430	—
Particle size	—	96.5 < 45 m
Specific gravity (g/cm^3)	3.10	2.2

Portland cement is ASTM Type I. Silica fume is mineral admixtures.