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

Table 1

Concrete mix proportion design of HDFC.

Code	Volume and length of PVA fiber		Dosage (kg/m³)
			Cement	Fly ash	Coarse aggregate	Fine aggregate	Water	Water-reducing agent
HDFC0-0	0	0	450	495	950	425	355	10
HDFC6-1	6	1.0%	450	495	950	425	355	10
HDFC6-1.5	6	1.5%	450	495	950	425	355	10
HDFC6-2	6	2.0%	450	495	950	425	355	10
HDFC9-1	9	1.0%	450	495	950	425	355	10
HDFC9-1.5	9	1.5%	450	495	950	425	355	10
HDFC9-2	9	2.0%	450	495	950	425	355	10
HDFC12-1	12	1.0%	450	495	950	425	355	10
HDFC12–1.5	12	1.5%	450	495	950	425	355	10
HDFC12.2	12	2.0%	450	495	950	425	355	10