The Optimization of Calcareous Fly Ash-Added Cement Containing Grinding Aids and Strength-Improving Additives

Table 1

The chemical properties of clinker, fly ash, and cement.

(%)	OPC clinker	Fly ash	0%	5%	20%	35%
CaO	66.26	12.86	63.71	61.73	56.11	47.04
SiO2	21.77	50.41	19.45	23.49	27.21	32.08
Al203	5.6	22.68	5.55	6.72	8.93	11.81
Fe203	3.67	6.55	3.48	3.84	4.22	4.71
MgO	1.52	1.19	1.71	1.50	1.46	1.40
Na2O	0.27	0.43	0.22	0.28	0.30	0.33
K2O	0.37	1.69	0.63	0.45	0.62	0.85
SO3	0.26	1.71	2.98	2.80	2.33	1.95
Cl	0.0159	—	0.02	0.02	0.02	0.02
Loss on ignition	0.10	1.03	2.11	0.16	0.28	0.43
S. CaO	1.99
C3S	52.59
C2S	22.75
C3A	8.64
C4AF	11.16
Specific weight		2.15	3.14	3.08	2.94	2.81