Fire Resistance Investigation of Simple Supported RC Beams with Varying Reinforcement Configurations

Table 2

Mix proportions of the concrete.

Material	Specification	Unit weight (kg/m^3)	Mixture ratio
Cement	P.O 42.5	206	1.00
Fine aggregates	Medium sands	752	2.46
Coarse aggregates	Particle sizes (5–25 mm)	1042	3.41
Water	Purified water	180	0.59
Admixtures	JX-1	8.08	0.03
Fly ash	Grade I	97.77	0.32

Cement: P.O. 42.5 (Chinese cement grading system) ordinary Portland cement from Jinfeng city. Fly ash: Grade I (Chinese fly ash grading system) fly ash of Jiangsu Huawang brand. Additives: JX-1 produced by Xingbang Co., Jining city.