Fast-growing wood species are unsuitable for direct use in load-bearing structures due to their loose fiber structure, low mechanical strength, and inadequate combustion performance. Traditional impregnation using low-molecular-weight resin may enhance certain characteristics but also poses environmental pollution risks. This study explores an alternative approach: subjecting Chinese fir lumbers to thermal treatment, impregnation with an inorganic solution, compression, and utilization as exposed side laminas for glulam beams. The fire performance of full-scale beams was evaluated under three-...
