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

Table 6

The background value of the relative dynamic elastic modulus of HDFC is 1-AGO.

Codes		Freeze-thaw times
		0	25	50	75	100	125	150
HDFC0-0	Background value	—	148.3	243.5	334.9	423.2	508.0	585.2
	1-Ago	100	196.8	290	379.7	466.8	549.2	621.2
HDFC6-1	Background value	—	149.2	246.3	341.3	433.2	522.1	603.5
	1-Ago	100	198.4	294.3	388.3	478.2	565.8	641.2
HDFC6-1.5	Background value	—	149.0	246.3	341.9	433.9	521.8	604.3
	1-Ago	100	197.9	294.7	389.2	478.5	565.0	643.5
HDFC6-2	Background value	—	148.7	243.9	336.2	427.2	515.8	599.4
	1-Ago	100	197.3	290.5	381.9	472.4	559.2	639.6
HDFC9-1	Background value	—	149.0	245.6	339.4	430.4	518.4	639.5
	1-Ago	100	198.0	293.2	385.6	475.2	561.6	642.5
HDFC9-1.5	Background value	—	148.6	245.2	340.0	432.6	522.7	606.5
	1-Ago	100	197.2	293.2	386.7	478.4	566.9	646.2
HDFC9-2	Background value	—	149.6	246.2	338.3	427.5	514.7	599.1
	1-Ago	100	199.1	293.2	383.5	471.6	557.8	640.4
HDFC12-1	Background value	—	149.2	245.9	339.4	430.7	519.3	601.9
	1-Ago	100	198.4	293.3	385.5	475.8	562.7	641.0
HDFC12–1.5	Background value	—	148.9	244.7	337.1	426.9	513.5	594.2
	1-Ago	100	197.8	291.7	382.6	471.4	555.7	632.7
HDFC12.2	Background value	—	148.4	244.5	339.1	431.8	522.7	609.3
	1-Ago	100	196.8	292.2	386.1	477.6	567.8	650.8