- 唐川江,譚 靖,袁 昕,溫 勇
2017年第11期
摘要
引用本文
摘??要:試驗測試了鋰渣等量取代10%、20%、30%水泥的C30、C40和C60三個強度等級的混凝土在不同凍融循環次數下的強度和氣體滲透系數,研究了凍融循環作用下鋰渣混凝土強度和氣體滲透性之間的相關性。結果表明:凍融循環作用下,鋰渣混凝土的氣體滲透系數和抗壓強度與試件的初始狀態、變化速率以及凍融循環次數密切相關,其性能劣化的曲線可采用生長模型中Slogistic1函數進行擬合求解;由擬合結果分析可知,對于C30和C40混凝土來說,鋰渣摻量在20%以下,能夠改善混凝土的氣體滲透性和抗壓強度,但對于C60混凝土來說,鋰渣摻量超過10%后性能下降較明顯;凍融循環作用下,鋰渣混凝土氣體滲透性系數與抗壓強度線性相關性良好。Abstract:ThestrengthandgaspermeabilityofC30,C40andC60lithiumslagconcreteunderfreezing-thawingcyclesweretestedtostudythecorrelationbetweenthestrengthandgaspermeabilitycoefficientofconcreteunderfreezing-thawingcycles.Theresultsindicatethestrengthandgaspermeabilitycoefficientofconcreteunderfreezing-thawingcyclesisaffectedbytheinitialstate,therateofchangeandthenumberoffreeze-thawcycles,thecurveofitsperformancedegradationcanbegotbySlogistic1functioninthegrowthmodel;theanalysisofthefittingresultsshowsthattheamountoflithiumslagislessthan20%,whichcanimprovethegaspermeabilityandcompressivestrengthofC30andC40concrete;butforC60concrete,theamountoflithiumslagismorethan10%,andtheperformancedecreasesobviously.Underthefreezing-thawingcycles,thegaspermeabilitycoefficientoflithiumslagconcretehasagoodlinearcorrelationwiththecompressivestrength.
唐川江,譚靖,袁昕,等.凍融循環作用下鋰渣混凝土強度與氣體滲透性能的相關性研究[J].混凝土與水泥制品,2017(11):1-5.
TANG C J, TAN J, YUAN X,et al.Study on the Correlation between Strength and Gas Permeability of Lithium Slag Concrete under Freezing-thawing Cycles[J].China Concrete and Cement Products,2017(11):1-5.