id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-22358	Yan, Minghui	Evolution Law of Frost Resistance of Fly Ash Concrete based on Large Temperature Difference between Freezing and Thawing Environment	2024	4	.pdf	application/pdf	2888	95	48	In order to study the deterioration and damage process of fly ash concrete under the condition of freeze-thaw cycle with large temperature difference, we take the Ruoqiang area in Xinjiang, China as the research background (temperature difference: -23.3℃~43.1℃), study the dynamic evolution process of corrosion resistance coefficients of the concrete specimens with fly ash dosage of 0, 10%, 20%, and 30%, and analyse the law of frost resistance decay of fly ash under the environment of freeze-thaw with large temperature difference; the results show that the addition of The results show that: adding 10%~20% of fly ash in concrete can slow down the deterioration of concrete frost resistance, and the frost resistance of concrete is the best under 20% of fly ash dosage. Based on the indoor large temperature difference freeze-thaw test to analyze the effect of different fly ash admixture on the corrosion resistance coefficient of concrete, Figure 3 shows that: in the corrosion resistance coefficient increase stage, 0%, 10%, 20% and 30% fly ash admixture concrete are in the 90th cycle to reach the maximum value of corrosion resistance coefficient, respectively, 1.12, 1.11, 1.15 and 1.17, increase in the range of 12.8%, 11.6 15.3% and 17.3%, and the development trend is 30%>20%>0%>10%; from the analysis of the peak corrosion resistance coefficient, it can be seen that: the concrete with 30% of fly ash has the largest corrosion resistance coefficient; from the analysis of the development trend, it can be seen that: the corrosion resistance coefficient grows more before 60 times of freeze- thaw cycles, and grows slower in the 60-90 times of cycles.	cache/ajst-22358.pdf	txt/ajst-22358.txt