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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    第五期

    石灰石粉替代部分水泥在寧夏地區商品混凝土中應用的可行性研究
    石灰石粉替代部分水泥在寧夏地區商品混凝土中應用的可行性研究
    • 朱 坤
    2017年第5期
    摘要
    引用本文
    摘??要:以石灰石粉等量取代部分水泥,分析了混凝土的工作性能和力學性能的變化規律,探討了用石灰石粉部分取代水泥在商品混凝土中應用的可行性。結果表明,在摻加聚羧酸外加劑的C30和C35混凝土中以15~35kg/m3的石灰石粉等量取代水泥是可行的。在商品混凝土中使用石灰石粉部分取代水泥可降低每m3混凝土原材料成本,并可充分利用我國豐富的石灰石資源。Abstract:Limestonepowderwasusedtoreplacesomecement,andtheeffectofconcreteonthepropertiesofconcretewasdetected.Inordertodiscussthefeasibilityofreplacing,thechangesintheworkabilityandmechanicalpropertiesofconcretewereanalyzed.Theresultsshowthatit'sfeasibletoreplacecementwith15~35kg/m3limestonepowderinC30andC35concrete.Theuseoflimestonepowderinsteadofcementcanreducethecostofconcreteandmakefulluseoftheabundantlimestoneresourcesinourcountry.
    朱坤.石灰石粉替代部分水泥在寧夏地區商品混凝土中應用的可行性研究[J].混凝土與水泥制品,2017(5):93-95. ZHU K.Feasible Study on Application of Limestone Powder Replaced Some Cement in Ready-mixed Concrete in Ningxia Area[J].China Concrete and Cement Products,2017(5):93-95.
    污泥基生態混凝土中重金屬的浸出研究
    污泥基生態混凝土中重金屬的浸出研究
    • 王 可1,代群威1,2
    2017年第5期
    摘要
    引用本文
    摘 要:以污泥為基料制備的生態混凝土為對象,研究了去離子水、硫酸-硝酸溶液和醋酸溶液三種浸取劑在浸取混凝土過程中重金屬的浸出情況和液相pH值變化特性。結果表明,重金屬鉛(Pb)、鉻(Cr)、鎘(Cd)、銅(Cu)和鋅(Zn)的浸出量隨著混凝土粒徑的減小而逐漸增加,砷(As)的浸出量隨著混凝土粒徑的減小略有減??;液相pH值隨著時間的增加而增加,浸取劑為醋酸溶液時,平衡后液相pH值最??;浸取劑的種類對混凝土中重金屬浸出結果影響很大,3種浸取劑條件下重金屬的浸出率大小為:醋酸溶液>硫酸-硝酸溶液>去離子水,但重金屬的浸出濃度都遠低于GB 5085.3—2007《危險廢物鑒別標準 浸出毒性鑒別》規定的限值,重金屬固化效果很好。 Abstract: Using the ecological concrete prepared with sludge as object, three kinds of leaching agent such as deionized water, sulphuric acid-nitric acid solution and acetic acid solution leaching of heavy metals in the process of concrete circumstance and pH value change characteristics were investigated. The result showed that Pb, Cr, Cd, Cu and Zn increased gradually with the reduction of the particle size, while As was slightly decreased with the decrease of the particle size. pH value increased gradually as time goes on. The minimum pH value of liquid phase was got after equilibrium under acetic acid solution conditions. The types of leaching agent have a great influence on leaching of heavy metals in the concrete, and the leaching ratio of every heavy metal showed an tendency: acetic acid solution>sulphuric acid-nitric acid solution>deionized water. As a consequence, the performance of solidification for heavy metals is well-behaved,and the leaching concentration of heavy metals from concrete is lower than that of the GB 5085.3—2007.
    王可,代群威.污泥基生態混凝土中重金屬的浸出研究[J].混凝土與水泥制品,2017(5):88-92. WANG K, DAI Q W.Research on Leaching of Heavy Metals from Sludge Based Ecological Concrete[J].China Concrete and Cement Products,2017(5):88-92.
    再生粗骨料取代率對植生型透水混凝土性能的影響
    再生粗骨料取代率對植生型透水混凝土性能的影響
    • 呂京錄,陳靜茹,趙鐵軍,田 礫, 逄增銘
    2017年第5期
    摘要
    引用本文
    摘 要:生態型透水混凝土是實現海綿城市構想的材料基礎。再生混凝土粗骨料自身存在吸水率高、強度略低于同類型天然骨料的弱點,但將其應用于植生型透水混凝土則可以避免這些弱點的不利影響并有利于建筑垃圾的再生利用。本文研究了不同的再生粗骨料取代率對植生型透水混凝土抗壓強度、孔隙率和植生適應性的影響。結果表明:再生粗骨料取代量為25%時,植生型透水混凝土28d抗壓強度略有提高;100%取代時強度降低不明顯;但中高取代量時,由于不同類型骨料形成的混凝土骨架及其節點界面削弱,導致強度有所降低。再生粗骨料取代率對混凝土的孔隙率沒有明顯影響,植物試種試驗表明其植生適應性未受影響。與插搗成型工藝相比較,振動成型工藝容易出現沉漿現象,不利于植物生長。 Abstract:Vegetation type permeable concrete is the material foundation to realize sponge city vision. Compared with natural aggregate,recycled concrete coarse aggregate has the weaknesses such as higher water absorption,and lower compressive strength. But if the recycled aggregate was applied to vegetation type permeable concrete,the adverse impact can be avoided and benefit the recycling of construction waste. In this paper, the effect on the different recycled coarse aggregate replacement ratio of vegetation type permeable concrete compressive strength, porosity and vegetative adaptability were experimental studied. The results showed that the amount of recycled coarse aggregate was 25%, the vegetation type permeable concrete 28d compressive strength increased slightly. The decrease of strength is not obvious while the replaced ratio is 100%. When the replace quantity is high , because of different types aggregate formation concrete skeleton and weak node interface, it lead to strength decrease. But the recycled coarse aggregate replacement ratio had no significant effect on the porosity and the vegetative flexibility unaffected of eco-porous concrete. Compared with inserted vibrating molding process, vibration molding process prone to cement paste settlement phenomenon, is not conducive to the growth of plants.
    呂京錄,陳靜茹,趙鐵軍,等.再生粗骨料取代率對植生型透水混凝土性能的影響[J].混凝土與水泥制品,2017(5):84-87. LYU J L, CHEN J R, ZHAO T J,et al.Influence of Recycled Coarse Aggregate Replacement on Properties of Vegetation Type Permeable Concrete[J].China Concrete and Cement Products,2017(5):84-87.
    土釘施加預應力對排樁復合土釘支護的影響分析
    土釘施加預應力對排樁復合土釘支護的影響分析
    • 李永輝,陳 寧,郭院成
    2017年第5期
    摘要
    引用本文
    摘 要:針對排樁與土釘相結合的一種新型基坑復合支護形式,研究了土釘施加預應力對其受力變形及整體穩定性的影響。采用ABAQUS有限元軟件建立排樁復合土釘支護基坑三維數值模型,模擬分析了土釘預應力施加位置和大小對土體的側移及沉降、排樁側移、土釘軸力、排樁樁身彎矩及基坑整體穩定性的影響。結果表明,施加預應力的土釘位置越靠近基坑邊坡上部,對限制基坑側移、減小坑后地表沉降作用越明顯,且影響程度隨施加的預應力增大而增大;土釘施加預應力使得其他排土釘軸力減小,軸力峰值點后移,且對上一排土釘影響最為明顯;土釘施加預應力后,排樁樁身軸力變化很小,排樁復合土釘支護基坑整體穩定性亦基本不變。排樁復合土釘支護可通過對基坑邊坡上部土釘施加預應力,以進一步控制基坑變形,土釘施加預應力難以提高支護體系的整體穩定性,但有利于增加排樁間土體的局部穩定性。 Abstract:As a new type of bracing structure of foundation pit, row piles and composite soil nailing structure was studied. The influences of prestressed soil nails on stress, deformation and global stability of the row piles and composite soil nailing supporting system were studied. ABAQUS finite element software was used to establish three-dimensional finite element model of the row piles and composite soil nailing structure. The effects of prestressed position and size on the soil lateral movement and settlement, row pile lateral displacement, axial-force of soil nails, pile moment and overall stability of foundation pits were simulated and studied. The results showed that prestressed position closer the upper part of the foundation pit slope, the impact of the restriction of lateral displacement and the decrease of ground settlement of the pit is more obvious. Moreover, the influence degree increases with the augment of the prestress. Prestressed soil nails can reduce the axial force of the other row of soil nails and retreat the axial force peak point. This law has the most obvious influence on a row of soil nails. After the soil nails prestressed, the change of axial force of row piles is very small and the global stability of row piles and composite soil nailing structure also basically remains unchanged. Row piles and composite soil nailing structure can further control the deformation by prestressing the soil nails in the upper of foundation pit. Although it is difficult to improve the global stability of supporting system by prestressing, it is conducive to increase the local stability of the soil between piles.
    李永輝,陳寧,郭院成.土釘施加預應力對排樁復合土釘支護的影響分析[J].混凝土與水泥制品,2017(5):79-83. LI Y H, CHEN N, GUO Y C.Effecting Analysis of Prestressed Soil Nail on Supporting of Composite Row Piles and Soil Nailing Structure[J].China Concrete and Cement Products,2017(5):79-83.
    福州地區超聲回彈綜合測強曲線研究
    福州地區超聲回彈綜合測強曲線研究
    • 盛海洋
    2017年第5期
    摘要
    引用本文
    摘??要:考慮各地區配制混凝土的常用材料、配合比不同造成超聲回彈綜合法檢測混凝土強度精度降低的問題,選取福州地區常用材料制備了混凝土試塊并進行了超聲回彈綜合法的強度測試。通過對測試數據的比較分析發現,全國統一的測強曲線在對福州地區混凝土強度預測過程中誤差過大,存在一定的適用性問題;通過進一步對試驗數據的擬合分析,初步建立了福州地區超聲回彈綜合法測強曲線并驗證了其有效性。Abstract:Duetothedifferentutilizationofrawmaterialanddifferentselectionoftheconcretemixproportion,theprecisionofthepredictionontheconcretestrengthwhenusingultrasonic-reboundcombinedmethodmightbereduced.Thematerial,aswellastheconcretemixproportionwhicharecommonusedinFuzhouregionareselectedandthestandardconcretesamplesarecasted.Ultrasonic-reboundcombinedmethodisusedtopredictthestrengthofthesamples.Aftercomparingofthetestresultsandthepredictionresults,itisfoundthatthepredictioncurvesuggestedincurrentnationalcodeisnotguaranteedpreciseresult.Andthenoptimizationmethodisusedtofitalocalstrengthpredictioncurve.Thecurveisthenvalidatedwithmoretestresults.
    盛海洋.福州地區超聲回彈綜合測強曲線研究[J].混凝土與水泥制品,2017(5):74-78. SHENG H Y.Study on Prediction Curves of Concrete Strength Used by Ultrasonic-rebound Combined Method in Fuzhou Area[J].China Concrete and Cement Products,2017(5):74-78.
    超細玻璃微珠高性能混凝土強度優化設計研究
    超細玻璃微珠高性能混凝土強度優化設計研究
    • 哈 娜
    2017年第5期
    摘要
    引用本文
    摘??要:超細玻璃微珠作為改善高性能混凝土的礦物摻合料,對高性能混凝土強度的改善程度還有待進一步研究。本文通過試驗研究了微珠和硅灰復摻以及水膠比對強度的影響;并應用價值工程理論,對玻璃微珠高性能混凝土強度進行優化設計分析,根據功能指數和成本指數確定價值指數,從而確定經濟合理的強度設計方案,并應用極差分析了兩種因素對強度的影響情況。Abstract:Asthemineraladmixtureofhighperformanceconcrete,theimprovementofthesuperfineglassbeadonthestrengthofhighperformanceconcreteneedstobefurtherstudied.Theeffectsofthemixingratioofbeadsandsilicafumeonthestrengthofwaterbinderratioarestudied.Bytheapplicationofvalueengineeringtheory,theglassbeadstrengthofhighperformanceconcreteanalysisanddesignoptimizationarecarriedout.Accordingtothefunctionalindexandthecostindex,thevalueindexisconfirmedtodeterminethestrengthofeconomicalandreasonabledesignscheme,andtheinfluenceofthesetwofactorsonthestrengthisanalyzedbytherangeanalysis.
    哈娜.超細玻璃微珠高性能混凝土強度優化設計研究[J].混凝土與水泥制品,2017(5):71-73. HA N.Research on Strength Optimization Design of High Performance Concrete with Superfine Glass Bead[J].China Concrete and Cement Products,2017(5):71-73.
    蒸壓加氣混凝土砌塊綠色化生產
    蒸壓加氣混凝土砌塊綠色化生產
    • 張凌怡,韓建軍,於林鋒,陳 寧,朱盛勝
    2017年第5期
    摘要
    引用本文
    摘 要:針對蒸壓加氣混凝土砌塊生產過程中存在的問題,從節能、降耗、減排三方面提出了提高利廢率、廢漿料回收利用、蒸壓釜節能技術、球磨機節能技術等綠色生產技術措施,以實現蒸壓加氣混凝土砌塊的綠色化生產。 Abstract:Based on the main problems in the production of autoclaved aerated concrete blocks,the green production technology from the aspects of energy saving, consumption reducing and emission reduction are put forward,such as improving waste utilization,waste slurry recycling,autoclave energy saving technology,ball mill energy saving technology to achieve the green production of autoclaved aerated concrete block.
    張凌怡,韓建軍,於林鋒,等.蒸壓加氣混凝土砌塊綠色化生產[J].混凝土與水泥制品,2017(5):68-70. ZHANG L Y, HAN J J, YU L F,et al.Green Production of Autoclaved Aerated Concrete Blocks[J].China Concrete and Cement Products,2017(5):68-70.
    新型薄層砂漿砌筑砌體抗壓強度預測
    新型薄層砂漿砌筑砌體抗壓強度預測
    • 林大偉,袁 野,劉 青,何 可,裴云鵬,孫偉民
    2017年第5期
    摘要
    引用本文
    摘 要:為了能夠較準確地預測薄層砂漿砌筑砌體的抗壓強度值,通過對30個試件進行了砌塊砌體的抗壓試驗;基于規范建立了薄層砂漿砌筑混凝土砌體抗壓強度的數學模型,研究了砌體受壓破壞過程和破壞機理,對比了薄層砂漿與普通砂漿砌筑砌體的抗壓性能。結果表明,本文模型具有可行性,且薄層砂漿能提高砌體的抗壓強度。 Abstract: In order to predict the compressive strength of thin mortar masonry accurately,compression test of block masonry for 30 specimens was conducted. Based on the specification, a mathematical model of compressive strength of concrete masonry mortar layer was established, the failure process and failure mechanism of masonry compression were studied. The compressive properties of thin mortar and ordinary mortar masonry were compared. The results show that the model is feasible and the compressive strength of masonry mortar can be improved.
    林大偉,袁野,劉青,等.新型薄層砂漿砌筑砌體抗壓強度預測[J].混凝土與水泥制品,2017(5):63-67. LIN D W, YUAN Y, LIU Q,et al.Prediction for Compressive Strength of New Type of Thin Mortar Masonry[J].China Concrete and Cement Products,2017(5):63-67.
    預制U型截面腹板PSRC梁抗震性能研究
    預制U型截面腹板PSRC梁抗震性能研究
    • 李杰麟1,邵永健1,翁曉紅2,邱文建1,張 炎1
    2017年第5期
    摘要
    引用本文
    摘 要:對三根U型截面腹板預制裝配式型鋼混凝土梁進行低周反復荷載試驗.分析其滯回曲線、骨架曲線、延性、強度衰減規律、剛度退化規律及耗能,研究不同剪跨比和不同現澆部分混凝土強度對PSRC梁抗震性能的影響。試驗結果表明,剪跨比對PSRC梁的破壞特征影響較大;現澆部分混凝土強度能夠提高試件的承載力及初始剛度,對變形能力及耗能性能影響較??;通過理論分析建立了PSRC梁屈服承載力計算公式。 Abstract: The low cyclic loading tests of three Prefabricated Steel Reinforced Concrete (PSRC)beams with U section is carried out. The hysteretic curves, skeleton curves, ductility, strength attenuation, stiffness degradation and energy dissipation are analyzed. The influence of shear span ratio and concrete strength in the cast-in-place area on the seismic behavior of PSRC beams is studied. The results show that the shear span ratio has a greater influence on the failure characteristics of PSRC beams. The concrete strength in the cast-in-place area improves the bearing capacity and initial stiffness of the specimen, but has little influence on deformation capacity and energy dissipation. Further, the formula of the yield bearing capacity of PSRC beam is established by theoretical analysis.
    李杰麟,邵永健,翁曉紅,等.預制U型截面腹板PSRC梁抗震性能研究[J].混凝土與水泥制品,2017(5):57-62. LI J L, SHAO Y J, WENG X H,et al.Study on Seismic Behavior of Prefabricated Steel Reinforced Concrete (PSRC) Beams with U Section[J].China Concrete and Cement Products,2017(5):57-62.
    纖維素纖維對混凝土力學性能及耐久性能影響研究
    纖維素纖維對混凝土力學性能及耐久性能影響研究
    • 夏 輝
    2017年第5期
    摘要
    引用本文
    摘??要:試驗探究了纖維素纖維對混凝土工作性能、基本力學性能、耐久性能的影響。結果表明,摻加纖維素纖維對混凝土流動性能影響較小,但對提高混凝土抗壓強度及抗拉強度有一定作用,摻加1.5kg/m3纖維素纖維的混凝土抗壓和抗拉強度分別提高6.62%、17.99%。纖維素纖維的摻加有利于改善混凝土抗滲性能及抗凍性能。Abstract:Theeffectofdifferentcontentofcellulosefiberontheworkingability,basicmechanicalpropertiesanddurabilityofthetunnelliningconcretewerestudied.Theresultsshowedthattheadditionofcellulosefiberhaslittleeffectontheflowperformanceofconcrete,butithasacertaineffectoncompressivestrengthandtensilestrengthofconcrete.Thecompressiveandtensilestrengthofconcretewith1.5kg/m3fiberincreased6.62%and17.99%respectively.Addingcellulosefiberishelpforimprovingimpermeabilityandfrostresistanceofconcrete.
    夏輝.纖維素纖維對混凝土力學性能及耐久性能影響研究[J].混凝土與水泥制品,2017(5):53-56. XIA H.Influence Research of Cellulose Fiber on Mechanical Properties and Durability of Concrete[J].China Concrete and Cement Products,2017(5):53-56.
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