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    蘇州混凝土水泥制品研究院有限公司

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    再生微粉摻量對再生透水混凝土性能的影響研究
    再生微粉摻量對再生透水混凝土性能的影響研究
    • 范偉麗1,陳淑平1,陳守開2,3;別亞靜2,丁澤霖2
    2020年3期
    摘要
    引用本文
    摘??要:基于灰色關聯分析法構建以再生骨料透水混凝土抗壓強度、劈拉強度、孔隙率、透水系數及質量損失率為評價指標的優選模型,計算得到再生微粉摻量與最優指標集的關聯程度。結果表明,0、10%和20%三種再生微粉摻量的灰色關聯度較高;摻量為0時,再生骨料透水混凝土的強度最高,10%摻量能夠改善其耐磨性能;20%摻量能夠顯著提高其透水性能。?Abstract:?Anoptimalmodelwasestablishedforevaluatingthecompressivestrength,splittingtensilestrength,porosity,permeabilitycoefficientandmasslossrateofrecycledaggregateperviousconcretebasedonthegreyrelationalanalysismethod,andthecorrelationdegreebetweendifferentcontentofrecycledfinepowderandtheoptimalindexsetwascalculated.Theresultsshowthatthegraycorrelationdegreeofthecontentofrecycledfinepowderat0,10%and20%ishigh.Theconcretestrengthofrecycledaggregateperviousconcreteisthebestwhenthecontentofrecycledfinepowderis0,andthewearresistanceofrecycledaggregateperviousconcretecanbeimprovedwhenthecontentofrecycledfinepowderis10%,andthepermeabilityofrecycledaggregateperviousconcretecanbesignificantlyimprovedwhenthecontentofrecycledfinepowderis20%.
    范偉麗,陳淑平,陳守開,等.再生微粉摻量對再生透水混凝土性能的影響研究[J].混凝土與水泥制品,2020(3):86-90.
    FAN W L,CHEN S P,CHEN S K,et al.Study on the Influence of Recycled Fine Powder Content on the Performance of Recycled Pervious Concrete[J].China Concrete and Cement Products,2020(3):86-90.
    ?;郀t礦渣和CaSO<sub>4</sub>對高強混凝土收縮特性影響試驗研究
    ?;郀t礦渣和CaSO4對高強混凝土收縮特性影響試驗研究
    • 蘇 怡1,菅田紀之2
    2020年3期
    摘要
    引用本文
    摘??要:基于正交設計方法,在水膠比為0.3的條件下,研究了0、20%、40%的?;郀t礦渣(GGBFS)和0、1.5%、3.0%、4.5%的CaSO4對高強混凝土凝結時間、收縮性能的影響,并采用XRD分析了水化過程。結果表明,摻入GGBFS和CaSO4能縮短凝結時間;復摻20%GGBFS和CaSO4的高強混凝土抑制自收縮效果優于復摻40%GGBFS和CaSO4的高強混凝土;復摻40%GGBFS和4.5%CaSO4能有效降低高強混凝土的干燥收縮性能。XRD結果表明,摻入GGBFS和CaSO4有利于水泥的水化反應,促進水化產物的生成。?Abstract:?Ttheeffectofreplacementrateofground-granulatedblastfurnaceslag(GGBFS)andCaSO4onthesettingtimeandshrinkageperformanceofhighstrengthconcretewithwater-binderratioof0.3wasstudiedbasedontheorthogonaldesignmethod,andthehydrationprocesswasanalyzedbyX-raydiffraction(XRD).TheresultsshowthattheincorporationofGGBFSandCaSO4canshortenthesettingtime,andtheinhibitionofshrinkageofhighstrengthconcretecompoundedwith20%GGBFSandCaSO4isbetterthanthatofconcretewith40%GGBFSandCaSO4.Thehighstrengthconcretewith40%GGBFSand4.5%CaSO4caneffectivelyreduceitsdryingshrinkageperformance.XRDanalysisshowsthattheincorporationofGGBFSandCaSO4isbeneficialtothehydrationreactionofcementandpromotetheformationofhydrationproducts.
    蘇怡,菅田紀之.?;郀t礦渣和CaSO4對高強混凝土收縮特性影響試驗研究[J].混凝土與水泥制品,2020(3):91-95.
    SU Y,SUGATA N.Experimental Study on the Effect of Ground-granulated Blast Furnace Slag and CaSO4 on Shrinkage Characteristics of High Strength Concrete[J].China Concrete and Cement Products,2020(3):91-95.
    鉻鐵渣新級配優化方法及對砂漿性能的影響
    鉻鐵渣新級配優化方法及對砂漿性能的影響
    • 杭美艷1, 彭雅娟1,郭艷梅2
    2020年3期
    摘要
    引用本文
    摘要: 分析了鉻鐵渣的基本屬性、化學成分及物相結構,揭示了鉻鐵渣的理化性能和級配特點。提出了“分計篩余曲線幾何分析”級配優化方法,將風積沙和磨細鉻鐵渣摻入鉻鐵渣對其進行級配優化,并通過4種強度等級的砂漿試驗進行驗證,研究了級配優化性能對砂漿和易性和強度的影響。結果表明,經級配優化的鉻鐵渣在充當砂漿骨料時,能夠改善砂漿和易性、提升砂漿強度。
    Abstract:The basic properties, chemical composition and phase structure of ferrochrome slag were analyzed, and the physical and chemical properties and gradation characteristics of ferrochrome slag were revealed. The gradation optimization method of "geometric analysis of residue on sieve" was put forward, and the gradation optimization was carried out by mixing the eolian sand and grinding ferrochrome slag into the ferrochrome slag, and then it was verified by mortar experiments of 4 strength grades, and the effect of gradation optimization on the workability and strength of mortar was studied. The results show that the graded optimized ferrochrome slag can improve the workability and strength of mortar when used as mortar aggregate.
    杭美艷,彭雅娟,郭艷梅.鉻鐵渣新級配優化方法及對砂漿性能的影響[J].混凝土與水泥制品,2020(3):96-99.
    HANG M Y,PENG Y J,GUO Y M.A New Gradation Optimization Method of Ferrochrome Slag and Its Effect on the Performance of Mortar[J].China Concrete and Cement Products,2020(3):96-99.
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