Use of Boron Compounds as Grinding Aids with Alcohol Amines and Their Effect on Portland Cement Setting Points

Table 2

XRF elemental analysis of the reference cement and ground cement mixtures with grinding aids and boron compounds.

Grinding aid	LOI	SiO2 (%)	Al2O3 (%)	Fe2O3 (%)	CaO (%)	MgO (%)	SO3 (%)	K2O (%)	Na2O (%)
No grinding aid (reference)	1.13	20.73	4.73	3.89	63.55	1.12	3.14	0.83	0.20
% 100 TEA	1.50	20.44	4.72	3.90	63.32	1.12	3.00	0.87	0.22
% 100 TIPA	1.43	20.41	4.76	3.92	63.37	1.13	3.02	0.86	0.21
% 75 TEA + % 25 BA	1.32	20.61	4.71	3.91	63.35	1.12	3.07	0.87	0.20
% 75 TIPA + % 25 BA	1.36	20.45	4.74	3.89	63.32	1.10	3.02	0.87	0.21
% 75 TEA + % 25 AHB	1.36	20.46	4.72	3.89	63.23	1.11	3.05	0.88	0.24
% 75 TIPA + % 25 AHB	1.34	20.54	4.72	3.91	63.3	1.12	3.03	0.87	0.22
% 67 TEA + % 33 BA	1.48	20.43	4.76	3.88	63.07	1.15	3.09	0.88	0.20
% 67 TIPA + % 33 BA	1.30	20.44	4.69	3.9	63.09	1.12	3.11	0.88	0.25
% 67 TEA + % 33 AHB	1.32	20.37	4.74	3.88	63.08	1.12	3.11	0.88	0.21
% 67 TIPA + % 33 AHB	1.46	20.60	4.73	3.89	62.69	1.11	3.08	0.87	0.25