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    蘇州混凝土水泥制品研究院有限公司

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    第五期

    水泥基多孔材料孔結構與吸聲性能關系研究
    水泥基多孔材料孔結構與吸聲性能關系研究
    • 余海燕1,王武祥2,楊久俊1
    2015年第5期
    摘要
    引用本文
    摘 要:采用“埋管造孔”的方法,制得了孔形狀規則、孔隙率、孔徑、孔組成都確定的理想樣品,通過測定樣品的吸聲系數,研究了水泥基多孔材料吸聲系數與孔徑、孔組成、孔隙率之間的關系。 Abstract:A series of ideal samples with uniform pore diameter, porosity and pore composition are prepared by a “tube to pore” method. Based on the measurement of their sound absorption properties, the relationships between the absorption coefficient of the cement-based porous materials and their pore diameter, pore composition or porosity are studied.
    碎粘土磚粗骨料再生混凝土強度試驗研究
    碎粘土磚粗骨料再生混凝土強度試驗研究
    • 陳 萌1,馬智永1,苗 麗2
    2015年第5期
    摘要
    引用本文
    摘 要:對4種碎粘土磚粗骨料取代率(0、20%、30%和50%)在4個齡期(3d、7d、14d和28d)的96個混凝土試件進行了抗壓強度和軸心抗拉強度試驗,試驗的再生混凝土凈水灰比為0.45,目標強度等級為C30。在試驗數據及參考文獻數據的基礎上,分別建立碎粘土磚粗骨料再生混凝土立方體抗壓強度隨齡期變化的經驗公式及其28d齡期立方體抗壓強度隨粗骨料取代率變化的經驗公式;回歸得出碎粘土磚粗骨料再生混凝土軸心抗拉強度隨齡期變化的經驗公式,并建立各個齡期軸心抗拉強度與立方體抗壓強度的換算關系。 Abstract: The cube compressive strength and the axial tensile strength of 96 recycled concrete members at ages of 3d, 7d, 14d, and 28d were carried out, and natural coarse aggregate (0, 20%, 30% and 50%) were replaced with crushed clay bricks coarse aggregate. The net water/cement is 0.45, and the concrete strength grade is C30. Based on the experimental results, the regression equation of crused clay bricks recycled concrete between the cube compressive strength and age, the equation between the 28d cube compressive strength and the natural coarse aggregate substitution ratio, the equation between the axial tensile strength and age, and the equation between the axial tensile strength and the cube compressive strength are all derived. The proposed equations can provide a better agreement with the experimental results. On the basis of the equations, the recycled concrete strength with crushed clay bricks coarse aggregate is well calculated.
    再生粗骨料品質和取代率對再生混凝土抗壓強度的影響
    再生粗骨料品質和取代率對再生混凝土抗壓強度的影響
    • 王曉飛1,李秋義1,2,羅健林1,諸雪青1
    2015年第5期
    摘要
    引用本文
    摘 要:通過簡單破碎制得Ⅱ類再生粗骨料(JP),并經過一次顆粒整形得到準Ⅰ類再生粗骨料(YK),再進行二次顆粒整形獲得Ⅰ類再生粗骨料(EK)。研究再生粗骨料不同品質(JP、YK、EK)和不同取代率(φz=0、20%、40%、60%、80%、100%)取代天然骨料(TR)對再生混凝土的用水量和抗壓強度的影響。結果表明,再生混凝土的用水量隨著取代率的增大而增大;摻入不同品質的再生粗骨料對再生混凝土的抗壓強度影響差別很大,當φz≥40%時,JP再生混凝土抗壓強度降低幅度較大,YK再生混凝土抗壓強度沒有較大幅度的降低,而EK再生混凝土的抗壓強度先小幅升高后降低,當φz=100%時,28d抗壓強度僅降低1MPa。 Abstract: Recycled coarse aggregate of Class Ⅱ(JP) was prepared by simple crushing, and then quasi class Ⅰ recycled coarse aggregate (YK) was acquired through a particle shaping process, since then classⅠrecycled coarse aggregate (EK) was acquired through a second particle shaping process. The influence on the amount of water and compressive strength of recycled concrete of different quality and substitution rate (φz= 0, 20%, 40%, 60%, 80%, 100%) of recycled coarse aggregate (JP, YK, EK) to replace natural aggregate (TR) were studied. The results show that the amount of water of recycled concrete increases withincreasing; the incorporation of different quality of recycled coarse aggregate greatly affects the compressive strength of recycled concrete, when φz is more than 40%, the compressive strength of JP recycled concrete greatly reduces, the compressive strength of YK recycled concrete does not greatly decrease, while the compressive strength of EK recycled concrete slightly increases, and then decreases, when φz=100%, its 28d compressive strength just reduces by 1MPa.
    用粉煤灰和火山巖現澆輕集料混凝土保溫非承重墻施工方法
    用粉煤灰和火山巖現澆輕集料混凝土保溫非承重墻施工方法
    • 龔澤弘1,賈曉滸1,侯永利2
    2015年第5期
    摘要
    引用本文
    摘 要:介紹了利用內蒙古當地電廠的粉煤灰及和林縣的火山巖現澆保溫非承重C10墻體的施工方法。所澆筑的C10輕質混凝土墻體具有墻體面平整、建設成本低、施工速度快和保溫性能好的優勢,該輕集料混凝土可用于保溫隔墻施工,也可以作為分戶供暖地面的保溫層。 Abstract: The construction method of C10 lightweight construction concrete cast-in-place insulation non-bearing wall is introduced using the fly ash from a power plant in Inner Mongolia and volcanic rock from Helin County. The kind of lightweight concrete wall has many advantages, such as surface smooth, low cost of construction, quick construction and good insulation performance. And the light aggregate concrete is not only used for thermal insulation construction wall, but can be used as heat insulation layer of household heating surface.
    大體積混凝土承臺溫控分析
    大體積混凝土承臺溫控分析
    • 蔣躍楠1,危 鼎2,宣衛紅1
    2015年第5期
    摘要
    引用本文
    摘 要:以中博會展中心大體積承臺的施工為例,探討了大體積混凝土施工的溫度控制措施;按平面應變理論建立了數值分析模型,利用有限元對大體積承臺進行了溫度場和應力場的模擬分析;對承臺內部的混凝土溫度進行了測量,并對實測結果進行了分析。 Abstract: Taking the pile cap of China Expo Exhibition Center as an example, the specific temperature controlling measures of massive concrete construction are discussed. A numerical model is established according to the plane strain theory, and the temperature and stress field of pile cap are simulated and analyzed by finite element. In addition, the internal temperature of large pile cap concrete is measured and the results are analyzed.
    棉花秸稈草磚房施工技術研究
    棉花秸稈草磚房施工技術研究
    • 史陽光,馮 勇,晉 強,付彬彬
    2015年第5期
    摘要
    引用本文
    摘 要:研究了將農業廢棄秸稈-棉花秸稈壓制成棉花秸稈草磚,并將其通過砌筑建成草磚建筑,探討其作為砌筑建房的墻體材料的施工工藝及技術措施,可為棉花秸稈草磚在農村修建“綠色、環保、節能”建筑,提供理論依據,并為我國的農作物秸稈資源循環再利用探索出一條經濟、適用、環保的途徑。 Abstract: The agricultural waste straw - cotton straw is pressed into cotton straw bricks, and then the straw brick building is constructed using the bricks. The construction technology and the key technical measures of cotton straw bricks as a masonry wall building material are discussed, which can provide a theoretical basis for large-scale applications of cotton straw brick in "green, environmental protection, energy saving" rural buildings, and explore a recycling economy, applicable and environmentally sound way for crop straw resources in China.
    蜂巢芯空腹樓蓋的關鍵施工技術及經濟性分析
    蜂巢芯空腹樓蓋的關鍵施工技術及經濟性分析
    • 吳學輝1,吳 韜2,蔣 慶3,張文振4,蔣映映2,方本強2
    2015年第5期
    摘要
    引用本文
    摘 要:蜂巢芯空腹樓蓋是近年來新開發的現澆混凝土空心樓蓋內模形式,具有減輕結構自重、降低層高、降低綜合造價、縮短施工工期、提高隔音隔熱性能等特點。施工難點分析表明,這種新型樓蓋技術的關鍵施工技術是芯模的抗位移和抗破損,并提出了控制措施。定性的效益分析和定量的指標分析均表明,蜂巢芯空腹樓蓋比傳統梁板樓蓋和密肋樓蓋有著明顯的經濟性優勢。 Abstract: The technology of cast-in-situ concrete hollow floor filled with honeycombed cores developed in recent years has many advantages such as reduce weight, storey height and cost, shorten the construction period, and improve the performance of sound and heat insulation. Construction difficulties analysis shows that, the key construction technology of this new floor technology is the core molds resistance to displacement and damage resistance, and some effective control measures are put forward. Qualitative analysis of benefit and indexes of quantitative analysis show that, compared with the traditional beam-slab floor and multi ribbed slab, the honeycombed core hollow floor has obvious advantage of economic.
    齡期對再生混凝土空心砌塊基本力學性能的影響
    齡期對再生混凝土空心砌塊基本力學性能的影響
    • 趙雪云
    2015年第5期
    摘要
    引用本文
    摘??要:對建筑垃圾用于建筑結構空心砌塊砌體進行了研究,砌塊采用再生粗骨料,再生砂漿采用再生細骨料。試驗結果表明,再生混凝土空心砌塊砌體隨著齡期的增加,力學性能(抗壓強度和抗剪強度)均有提高,抗壓強度在養護后7~14d的時間內強度增長最快,而抗剪強度則是養護14~28d的時間內強度增長最快,因此,在實際工程中應該注重相應時間段的養護。Abstract:Theconstructionwasteusedinconstructionofhollowblockmasonryisstudiedusingrecycledcoarseaggregateforblockandusingrecycledfineaggregateforrecycledmortar.Theresultsshowthatthemechanicalproperties(compressivestrengthandshearstrength)ofrecycledconcretehollowblockmasonryincreasewiththeincreaseofages,thegrowthrateofthecompressivestrengthisthefastestaftercuring7~14d,andthegrowthrateoftheshearstrengthisthefastestaftercuring14~28d,soitshouldpayattentiononthecorrespondingtimeperiodofcuringinthepracticalengineering.
    煤矸石陶粒GRC墻板導熱系數影響研究
    煤矸石陶粒GRC墻板導熱系數影響研究
    • 米 力1,牛恒茂2,3,劉井紅1,王 瑾1
    2015年第5期
    摘要
    引用本文
    摘??要:通過對各試件導熱系數的測定,分析了水膠比,粉煤灰摻量,骨料摻量和煤矸石陶粒摻量四因素變化對A型GRC墻板導熱系數的影響;對比了水膠比、煤矸石陶粒摻量變化下A、B兩種板型GRC墻板的導熱系數,并對結果進行了綜合分析。試驗結果表明,高水膠比、高摻量粉煤灰和低煤矸石摻量條件下,A型墻板導熱系數低;在一定范圍內提高骨料摻量,A型墻板導熱系數降低;另外,B型墻板的導熱系數遠低于A型墻板,對B型墻板而言,各因素的變化對導熱系數的影響顯著減弱。Abstract:EffectsofthefourinfluencingfactorsincludingW/B,thecontentsofflyash,aggregateandcoalgangueceramsitesonthermalconductivityofA-typeGlass-fiberReinforcedComposite(GRC)wallswerestudiedandanalyzed.ThermalconductivitiesofA-typeandB-typewallsbyadjustingW/Bandcoalgangueceramsitescontentwerecontrasted.TheresultsshowthatthethermalconductivityofA-typewallsislowundertheconditionofhighW/B,highcontentofflyash,andlowcontentofcoalgangueceramsites.ThethermalconductivityofA-typewallsreducesincreasingtheaggregatecontentinacertainrange;ontheotherhand,thethermalconductivityofB-typewallsissignificantlylowerthanthatofA-typewalls.TheeffectoftheinfluencingfactorsonthethermalconductivityofB-typewallsisobviouslyweakened.
    微波蒸壓技術快速養護加氣混凝土砌塊試驗研究
    微波蒸壓技術快速養護加氣混凝土砌塊試驗研究
    • 趙 政1,田安國2,蔣德穩2,胡 杰2
    2015年第5期
    摘要
    引用本文
    摘 要:為了加速養護加氣混凝土砌塊,將微波技術應用到傳統的蒸壓養護工藝中,設計和制作了小型微波蒸壓釜,并采用試驗釜開展了一系列的試驗研究。研究結果表明,當微波加熱時間在20min,恒溫時間4~4.5h,恒溫溫度180~190℃,降溫時間1h,加氣混凝土強度滿足出釜強度3.0MPa、密度等級683~813kg/m3的質量控制要求。 Abstract: In order to cure aerated concrete block quickly, microwave was applied to the conditional autoclave curing. A small microwave autoclave was designed and made, and a series of experimental studies were conducted with small microwave autoclave. The results show that when the microwave heating time is 20min, the constant time is 4~4.5h, the constant temperature is 180~190℃, and the cooling time is 1h, the strength of aerated concrete block can meet the quality control requirements that the strength of aerated concrete out of the autoclave is 3.0MPa, and the density rank is in the range of 683~813kg/m3.
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