id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-30374	Yang, Yifan	Influence of Expansive Agent on Concrete Performance in Northwest Cold Region	2025	4	.pdf	application/pdf	2390	88	51	Effect of expansion agent dosage on compressive strength of concrete The strength of concrete showed an increasing trend with the increase of age, but the strength of concrete increased first and then decreased with the amount of expansion agent, and the P2 group showed the highest compressive strength at all ages, indicating that the appropriate amount of expansion agent could effectively promote the hydration reaction of cement, generate an appropriate amount of aluminite crystals, and fill the capillary pores inside the concrete, thereby optimizing the microstructure of concrete and improving the mechanical properties. China Abstract: In this study, the effects of expansion agents on the compressive strength and frost resistance of concrete in the cold region of Northwest China were studied, and the effects of different amounts of expansion agents on the compressive strength and freeze-thaw cycle performance of concrete were analyzed experimentally, and the improvement mechanism of expansion agents on the frost resistance of concrete was revealed by combining the mass loss rate, relative dynamic elastic modulus attenuation and microstructure analysis.	cache/ajst-30374.pdf	txt/ajst-30374.txt