[Retracted] Performance of High Strength Concrete Containing Palm Oil Fuel Ash and Metakaolin as Cement Replacement Material

Table 1

Properties of material.

Material	Type/properties	Specific surface area (m^2/g)	Particle size mean (μm)	Blaine surface area (m^2/g)
Cement	Normal Portland cement	1.16	16.4	0.32
POFA	POFA passing sieve 300 μm, refined for 8 hours in ball mill and Heat treatment 500°C for 1 hours	1.72	9.64	0.79
MK	Kaolin via heat treatment 700°C for 1 hours	1.48	8.36	0.881
Coarse aggregate	Passing sieve 14 mm	—	—
Fine aggregate	Passing sieve 5 mm	—	—
Water	Tap water	—	—