[Retracted] Nano-SiO₂ and PVA Fiber Synergistically Strengthened Concrete to Optimize the Antifreeze, Antipermeability, and Anticorrosion Performance of Roads

Table 3

Three-day, 7 d, 28 d, and 90 d compressive strength of concrete NAC, BAC, CAC, SBAC, and SCAC.

Specimen number	Compressive strength at different ages (MPa)
	3 d	7 d	28 d	90 d	Coarse aggregate
NAC	20.14	27.85	27	47.38	921
BAC	22.06	24.10	42.92	33.73	873
CAC	22.72	26.32	29.52	39.30	912
SBAC	17.32	20.96	33.25	36.84	848
SCAC	21.20	25.98	28.67	44.09	910