Study of the Frost Resistance of HDFC Based on a Response Surface Model and GM (1,1) Model

Table 7

Prediction model and coefficient of relative dynamic elastic modulus of HDFC.

Codes	Parameters a and b	Relative dynamic elastic modulus prediction model
HDFC0-0	a = 0.0516, b = 106.1338
HDFC6-1	a = 0.0447, b = 107.2912
HDFC6-1.5	a = 0.0415, b = 106.4648	2565.42
HDFC6-2	a = 0.0331, b = 102.4197
HDFC9-1	a = 0.0343, b = 103.6657
HDFC9-1.5	a = 0.0352, b = 104.4933
HDFC9-2	a = 0.0345, b = 103.1350
HDFC12-1	a = 0.0395, b = 105.2368
HDFC12–1.5	a = 0.0430, b = 105.0253
HDFC12–1.5	a = 0.0284, b = 98.25320