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

Table 1

Blaine, water demand, and the initial and final setting analysis results of the reference cement and ground cement with grinding aids and boron compound mixtures.

Grinding aid	Initial setting (min.)	Final setting (min.)	Blaine (cm^2/gr)	Water demand (%)
No grinding aid (reference)	140	215	3704	23
% 100 TEA	170	255	4030	26.3
% 100 TIPA	150	215	4106	26.1
% 75 TEA + % 25 BA	170	260	4052	25.5
% 75 TIPA + % 25 BA	150	220	4004	25.5
% 75 TEA + % 25 AHB	150	225	4075	25.8
% 75 TIPA + % 25 AHB	140	215	3995	25.4
% 67 TEA + % 33 BA	155	225	4085	25.8
% 67 TIPA + % 33 BA	140	205	4001	25.3
% 67 TEA + % 33 AHB	155	230	4088	25.8
% 67 TIPA + % 33 AHB	150	210	3997	25.5