Influence of Coupling Effects of Time and Water-to-Cement Ratio on Rheological Properties of Bingham Cement Grouts

Table 6

Verification results of four quantitative relationship models between coupling effects of time and water-to-cement ratio and plastic viscosity of Bingham cement grouts.

Test number	Time/min	Theoretical value of fitting model				Test value	Variance analysis/(%)
		Linear	Logarithm	Exponent	Power function		Linear		Logarithm		Exponent		Power function
							Variance	Change range	Variance	Change range	Variance	Change range	Variance	Change range
G1	0	0.0141	—	0.0188	0.0000	0.0174	−23.40	39.52	—	39.84	7.45	4.12	—	66.83
	3	0.0171	—	0.0203	0.0134	0.0192	−12.28		—		5.42		−43.28
	15	0.0291	0.0330	0.0278	0.0324	0.0254	12.71		23.03		8.63		21.60
	25	0.0391	0.0447	0.0361	0.0429	0.0328	16.11		26.62		9.14		23.54
	40	0.0541	0.0555	0.0532	0.0555	0.0493	8.87		11.17		7.33		11.17
	55	0.0691	0.0628	0.0786	0.0661	0.0711	2.89		−13.22		9.54		−7.56
G2	0	0.0118	—	0.0169	0.0000	0.0155	−31.36	48.26	—	71.51	8.28	4.25	—	38.66
	7	0.0188	0.0132	0.0203	0.0194	0.0189	−0.53		−43.18		6.90		2.58
	16	0.0278	0.0322	0.0256	0.0305	0.0231	16.91		28.26		9.77		24.26
	23	0.0348	0.0406	0.0308	0.0372	0.0291	16.38		28.33		5.52		21.77
	45	0.0568	0.0560	0.0545	0.0538	0.0497	12.50		11.25		8.81		7.60
	58	0.0698	0.0618	0.0764	0.0618	0.0707	−1.29		−14.40		7.46		−14.40