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    蘇州混凝土水泥制品研究院有限公司

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    第九期

    用建筑廢渣灰和鑄造舊砂再生粉塵制備高強輕集料的研究
    用建筑廢渣灰和鑄造舊砂再生粉塵制備高強輕集料的研究
    • 牟 楊
    2017年第9期
    摘要
    引用本文
    摘??要:為減少環境污染,實現建筑行業的可持續發展,利用建筑廢渣灰和鑄造舊砂再生粉塵制備了高強輕質建筑材料。分析了建筑廢渣灰、鑄造舊砂再生粉塵的化學成分,給出了高溫燒結方法生產輕集料的主要工藝流程及步驟,并對生產出的輕集料制品性能進行了研究。結果表明,所生產的輕集料密度為1000~1250kg/m3,吸水率為5%~7%,強度等級≥800,屬高強輕集料。Abstract:Inordertoreduceenvironmentalpollutionandrealizethesustainabledevelopmentofconstructionindustry.Theconstructionwasteashandfoundrysandreclamationdustareusedtopreparethehighstrengthlightweightbuildingmaterial.Thechemicalcompositionofconstructionwasteash,castingsandregenerationdustisanalyzed,thehightemperaturesinteringmethodisdeterminedtotesttheproductionoflightweightaggregate,andtheperformanceoflightaggregateproductsproducedarestudied.Theresultsshowthatthemethodcanproducethehighstrengthlightweightaggregatewhosedensityintherangeof1000~1250kg/m3,waterabsorptionin5%~7%,andthestrengthgradeover800.
    牟楊.用建筑廢渣灰和鑄造舊砂再生粉塵制備高強輕集料的研究[J].混凝土與水泥制品,2017(9):92-94. MOU Y.Study on High Strength Lightweight Aggregate Prepared by Construction Waste Ash and Foundry Sand Reclamation Dust[J].China Concrete and Cement Products,2017(9):92-94.
    鋼渣-粉煤灰機械活化制備地聚合物水泥的耐鹽腐蝕性能研究
    鋼渣-粉煤灰機械活化制備地聚合物水泥的耐鹽腐蝕性能研究
    • 蔣 灶1,徐中慧1,2,徐亞紅1,李 娜1,李 萍1,何 志1,黃 陽1,2,尹雅潔3
    2017年第9期
    摘要
    引用本文
    摘 要:利用機械力激發鋼渣和粉煤灰的活性,研究了機械力活化前后鋼渣-粉煤灰基地聚合物水泥的耐鹽腐蝕性能,并對其水化產物進行了物相分析和微觀結構分析。結果表明,機械力活化后鋼渣-粉煤灰基地聚合物水泥的抗壓強度提高到46MPa,孔隙度減小,耐鹽腐蝕性能提升。XRD和SEM分析表明,機械力活化前后樣品中的水化產物主要為無定形凝膠,機械力活化后樣品的結構更為致密;機械力活化后樣品在5% Na2SO4和5% NaCl溶液中浸泡60d后,少量水化產物能與硫酸根離子反應生成鈣礬石,與氯離子反應可能生成了水化氯鋁酸鈣(3CaO·Al2O3·CaCl2·10H2O),造成樣品抗壓強度降低,但樣品整體形貌保持完好,未出現大面積的破壞。 Abstract:The steel slag and fly ash activated by mechanochemical method are used for the preparation of geopolymer. The performance and mechanism of anti-salt corrosion of geopolymer made of steel slag and fly ash are investigated. The results indicate that the compressive strength of geopolymer samples made of steel slag and fly ash milled by mechanical power increases to 46MPa, the porosity reduces and the performance of anti-salt corrosion of the samples is improved. XRD and SEM analyses show that the hydration products in the geopolymer samples are mainly amorphous gel. When the activated geopolymer samples are immersed into 5% Na2SO4 or 5% NaCl solution for 60d, hydration products can react with sulfate or chloride ions to form ettringite or hydrated calcium aluminum chloride(3CaO·Al2O3·CaCl2·10H2O), resulting in the lower compressive strength. However, the microstructure of the samples is still intact.
    蔣灶,徐中慧,徐亞紅,等.鋼渣-粉煤灰機械活化制備地聚合物水泥的耐鹽腐蝕性能研究[J].混凝土與水泥制品,2017(9):88-91. JIANG Z, XU Z H, XU Y H,et al.Research on Anti-salt Corrosion Performance of Geopolymer Cement Prepared by Steel Slag-fly Ash Mechanical activation[J].China Concrete and Cement Products,2017(9):88-91.
    預制裝配式建筑施工關鍵技術研究
    預制裝配式建筑施工關鍵技術研究
    • 肖 芳
    2017年第9期
    摘要
    引用本文
    摘 要:以廣州市南沙區某工程項目為背景,研究了構件安裝時水平度和垂直度控制的施工工藝,并對構件接縫處的防水構造和構件吊裝時的安全技術措施進行了研究和總結,可為類似工程的裝配式施工提供參考和借鑒。 Abstract: The Guangzhou city of Nansha District is taken as the object to study the construction process of the installation of control levelness and verticality of components. The waterproof structure of joint of members and safety technical measures for component hoisting are studied and concluded and it can be used as a reference for the similar engineering.
    肖芳.預制裝配式建筑施工關鍵技術研究[J].混凝土與水泥制品,2017(9):85-87. XIAO F.Key Technology Study on Prefabricated Building Construction[J].China Concrete and Cement Products,2017(9):85-87.
    重晶石防輻射混凝土的制備與泵送施工
    重晶石防輻射混凝土的制備與泵送施工
    • 李政統,黃紅俊
    2017年第9期
    摘要
    引用本文
    摘 要:以中國核工業物理研究所太赫茲實驗室重晶石防輻射混凝土項目為研究對象,生產了強度、表觀密度達標,和易性優良的重晶石防輻射混凝土;同時,找到了該種混凝土泵送施工困難的關鍵因素,提出了實際生產中必須注意的技術問題。 Abstract: The CAEP THz laboratory barite concrete projects is taken as the object for the study to prepare barite radicotion proof concrete that strength, density, flowability are meeting the requirement. Meanwhile, the difficult reason for barite radicotion proof concrete pumping, and construction and the actual production of technical problems are proposed.
    李政統,黃紅俊.重晶石防輻射混凝土的制備與泵送施工[J].混凝土與水泥制品,2017(9):82-84. LI Z T, HUANG H J.Preparation and Pump Construction of Barite Radiation Concrete[J].China Concrete and Cement Products,2017(9):82-84.
    硬化混凝土中粗骨料和砂漿含量測定方法
    硬化混凝土中粗骨料和砂漿含量測定方法
    • 張亞濤,孫述彬,劉長順
    2017年第9期
    摘要
    引用本文
    摘 要:為了能夠簡潔高效地測定出硬化混凝土中粗骨料和砂漿含量,成型了特殊形狀的一定配比的混凝土試件,標準養護一年后,基于彈性理論、界面過渡區理論和凍融理論,發現效果最好的檢測方法是整樣高溫處理法——“(105±5)℃烘至恒重的整個試樣在(520±10)℃環境下1h,空氣中冷至室溫,人工分離出粗骨料和砂漿”,利用該方法能有效地使硬化混凝土中粗骨料和砂漿含量測定結果相對誤差絕對值分別控制在3%和2%以內,試驗時間為4d,并且該方法對硬化混凝土中水泥含量的測定具有一定的參考價值。 Abstract: In order to get the efficient method that can be determined the content of coarse aggregate and mortar in hardened concretes, special shape samples with a certain ratio were prepared. After the concrete samples were cured for a year in a standard environment, based on elasticity theory, interface transition zone theory and Freeze-thaw theory, an ideal determination method is found that after drying at (105±5)℃, whole sample was treated at (520±10)℃ for 1h, then sample temperature is cooled to room temperature, and then artificial separates from coarse aggregate and mortar. By using this method, the absolute value aboutrelative deviation of coarse aggregate and mortar content of hardened concrete is set within 3% and 2%, and the results can be obtained during 4 days. This method can give some help to the determination of cement content in hardened concretes.
    張亞濤,孫述彬,劉長順.硬化混凝土中粗骨料和砂漿含量測定方法[J].混凝土與水泥制品,2017(9):77-81. ZHANG Y T, SUN S B, LIU C S.Testing Method of Coarse Aggregate and Mortar Content in Hardened Concrete[J].China Concrete and Cement Products,2017(9):77-81.
    幼齡期混凝土強度檢測技術對比試驗分析
    幼齡期混凝土強度檢測技術對比試驗分析
    • 徐秀華
    2017年第9期
    摘要
    引用本文
    摘 要:對比試驗分析了射釘法測試儀和幼齡期混凝土強度專用測試儀在不同混凝土強度區間檢測適用性。結果表明,對于抗壓強度不大于2.0MPa的混凝土構件,采用幼齡期混凝土強度專用測試儀測得混凝土強度換算值和貫入深度值之間相關性相對較好,宜采用幼齡期混凝土強度專用測試儀測定其強度;對于抗壓強度在2.0MPa以上的混凝土構件,采用射釘法測試儀測得混凝土強度換算值和貫入深度值之間相關性相對較好,宜采用射釘法測試儀測定其強度。 Abstract:The applicability of Nail method tester and infant age concrete strength tester in different concrete strength range were compared. The results show that the infant age concrete strength tester is suitable used for the compressive strength of concrete member less than 2.0MPa and the relatively superior correlation between the concrete strength conversion value and penetration depth can be obtained by using the infant age concrete strength tester. The Nail method tester is suitable used for the compressive strength of concrete member above 2.0MPa, and the relatively superior correlation between the concrete strength conversion value and penetration depth can be obtained by using the Nail method tester.
    徐秀華.幼齡期混凝土強度檢測技術對比試驗分析[J].混凝土與水泥制品,2017(9):74-76. XU X H.Comparative Experimental Analysis on Testing Technology of Infant Concrete Strength[J].China Concrete and Cement Products,2017(9):74-76.
    鋼纖維再生混凝土常規三軸壓縮試驗研究
    鋼纖維再生混凝土常規三軸壓縮試驗研究
    • 王海龍,袁 瑞
    2017年第9期
    摘要
    引用本文
    摘 要:使用DYS-2500高溫高壓巖石三軸試驗機對鋼纖維再生混凝土圓柱體進行了單軸壓縮和常規三軸壓縮試驗研究。結果表明,鋼纖維再生混凝土在單軸壓縮和三軸壓縮下的破壞形態有所差別;同一圍壓下,鋼纖維再生混凝土隨著鋼纖維摻量的增加,試件能承受的主壓應力及軸向應變也相應增加,且圍壓下的應力-應變曲線走勢大體一致;相同摻量鋼纖維再生混凝土,隨著圍壓值的提高,其承受的主壓應力、軸向應變也相應提高;圍壓15MPa時,鋼纖維再生混凝土的峰值應力約是單軸壓縮下峰值應力的3.08~4.13倍;同一圍壓下的纖維再生混凝土,鋼纖維摻量2%的峰值應力約是普通再生混凝土峰值應力的1.15~1.54倍;圍壓15MPa時鋼纖維再生混凝土的峰值應變比0MPa時的峰值應變增加了5.98~6.76倍;同一圍壓下的再生混凝土,鋼纖維摻量2%的峰值應變約是普通再生混凝土峰值應變的1.22~1.52倍。 Abstract: DYS-2500 high temperature and high pressure rock triaxial testing machine is used to carry out the uniaxial pressure and conventional triaxial compression test of steel fiber recycled concrete cylinder. The test results show that the failure pattern of steel fiber recycled concrete under uniaxial compression and triaxial compression test is different. Under the same confining pressure, the main compressive stress and axial strain of fiber regenerated concrete increased with the increase of steel fiber parameters. The stress-strain curve of the confining pressure is generally consistent. With the increase of the confining pressure value, the axial strain of the main compressive stress of the same steel fiber reinforced concrete is improved accordingly. The peak stress of mixed fiber recycled concrete was 3.08~4.13 times of the peak stress of single axial pressure when confining pressure of 15MPa. The peak stress of two percent of the steel fiber parameters is about 1.15~1.54 times the peak stress of the recycled concrete. The peak strain of mixed fiber regenerated concrete at 15MPa is 5.98~6.76 times higher than that in 0MPa. The peak strain of 2% of steel fiber parameter is 1.22~1.52 times of the peak strain of recycled concrete.
    王海龍,袁瑞.鋼纖維再生混凝土常規三軸壓縮試驗研究[J].混凝土與水泥制品,2017(9):70-73. WANG H L, YUAN R.Experimental Study on Conventional Triaxial Compression of Steel Fiber Recycled Concrete[J].China Concrete and Cement Products,2017(9):70-73.
    混沌振動及其對混凝土砌塊成型的影響
    混沌振動及其對混凝土砌塊成型的影響
    • 劉曉星1,沈建達2
    2017年第9期
    摘要
    引用本文
    摘 要:分析了混凝土砌塊振動密實成型效果的影響因素,采用端面式混沌激振器,建立了混沌振動成型機的動力學模型,并進行了動力學分析,得出混沌振動成型機具有較寬的振動頻率、較高的振動加速度、振幅和振動烈度,能增加被振混凝土混合物中各種物料與物料之間碰撞和拌合的機會,并降低模具與物料之間的摩擦,提高密實性和均勻性,同時,具有對所加工的砌塊原材料適應面寬等優勢,最后通過實例分析驗證了其有效性。 Abstract:The influence factors of concrete block forming vibration close-grained effect is analyzed. The chaotic vibrator is applied, the dynamics model of chaotic vibration molding is established and motion is analyzed, The results show that the vibration of the chaotic vibration molding machine has a wide frequency, high vibration acceleration and amplitude and vibration intensity, the vibration concrete mixture chance of collision and mixing between all kinds of material can be increased and the friction between mold and material can be reduced and has the better compactness, uniformity, high efficiency and adaptation of wide for block processing by the raw materials. At last, its effectiveness is prored by the example analysis.
    劉曉星,沈建達.混沌振動及其對混凝土砌塊成型的影響[J].混凝土與水泥制品,2017(9):67-69. LIU X X, SHEN J D.The Chaotic Vibration and Its Influence on Concrete Block Forming[J].China Concrete and Cement Products,2017(9):67-69.
    基于HyperMesh和LS-Dyna的徑向擠壓制管機成型頭仿真分析
    基于HyperMesh和LS-Dyna的徑向擠壓制管機成型頭仿真分析
    • 錢 剛1,2,馮 勇1,2,張 杰1,楊征宇1,韋文東1
    2017年第9期
    摘要
    引用本文
    摘 要:針對設計的立式徑向擠壓制管機成型頭,采用SolidWorks軟件建立其三維實體模型,運用HyperMesh軟件劃分網格,定義材料屬性、成型頭與混凝土的接觸類型和工作載荷,通過LS-Dyna軟件計算成型頭擠壓混凝土成型過程的力學行為,獲得成型過程中混凝土的應力、應變分布情況,表明立式徑向擠壓制管機成型頭已基本能夠實現混凝土的擠壓成型,但在成型過程的第一階段,混凝土的最大應力值達到了其屈服強度的臨界點,混凝土管易發生坍塌、裂紋等現象,仿真分析可為成型頭結構的進一步改進提供理論依據。 Abstract: The molding head of vertical radial press concrete pipe machine has been designed. The SolidWorks is used to model it. The HyperMesh is used to establish the finite element model of molding head, including meshing and defining the material, contact and load. The Ls-Dyna is used to calculate the mechanical behavior of molding head extruding the concrete to obtain the stress and strain distribution. The results show that the molding head of vertical radial press concrete pipe machine has been basically able to realize the extrusion forming of the concrete. But because the maximum stress of concrete reaches the critical point of its yield strength in the first stage of the forming process, the concrete pipe is prone to collapse and cracks, which provides a theoretical basis for further improvement of molding head.
    錢剛,馮勇,張杰,等.基于HyperMesh和LS-Dyna的徑向擠壓制管機成型頭仿真分析[J].混凝土與水泥制品,2017(9):63-66. QIAN G, FENG Y, ZHANG J,et al.Simulation Analysis on Molding Head of Vertical Radial Press Pipe Machine Based on HyperMesh and LS-Dyna[J].China Concrete and Cement Products,2017(9):63-66.
    無機保溫砂漿內外組合保溫系統結合外墻隔熱涂料的熱工性能研究
    無機保溫砂漿內外組合保溫系統結合外墻隔熱涂料的熱工性能研究
    • 華治國,朱 悅,王吉霖
    2017年第9期
    摘要
    引用本文
    摘 要:根據上海市建筑節能相關規定和要求,進行了墻體構造方案的熱工計算和分析,提出了適用于夏熱冬冷地區的無機保溫砂漿內外組合保溫系統結合外墻隔熱涂料的復合混凝土外墻構造方案。 Abstract: According to the relevant regulations and requirements of building energy efficiency in Shanghai, the thermal calculation and analysis of the wall construction scheme is carried out, the concrete wall construction scheme of inorganic insulation mortar internal and external composite insulation system with exterior wall heat insulation coating that can be used in hot summer and cold winter zone is put forward.
    華治國,朱悅,王吉霖.無機保溫砂漿內外組合保溫系統結合外墻隔熱涂料的熱工性能研究[J].混凝土與水泥制品,2017(9):60-62. HUA Z G, ZHU Y, WANG J L.Research on Thermal Properties of Inorganic Insulation Mortar Internal and External Composite Insulation System combining with Exterior Wall Heat Insulation Coating[J].China Concrete and Cement Products,2017(9):60-62.
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