Influence of Organic Esters on Portland Cement Hydration and Hardening

Table 4

Characteristic parameters of cement hydration.

Sample	The end time of the induction period (h)	The appear time of the second exothermic peak (h)	Second exothermic peak exothermic rate (J/g·h)	Total heat release (J/g)
				24 h	48 h	72 h
Pure cement	1.3	7.9	14.2	295.0	374.0	416.6
+0.05% EAC	1.7	8.3	14.8	311.3	396.8	443.5
+0.05% DMO	2.2	9.2	15.6	325.6	418.1	468.4
+0.05% TG	1.8	10.6	17.7	330.0	430.1	482.2
+0.05% TMP	4.2	10.4	13.2	266.7	345.2	389.0
+0.05% TB	2.2	10.9	16.3	311.8	411.2	463.7