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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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    第十一期

    水泥基材料3D打印技術與應用 ——評《水泥基材料3D打印關鍵技術》
    水泥基材料3D打印技術與應用 ——評《水泥基材料3D打印關鍵技術》
    • 王秋菊
    2020年第11期
    摘要
    引用本文
    為了進一步提高建筑業生產效率,研究員研發出了水泥基材料3D打印這一新型增材制造技術,在房屋建筑、道路橋梁、地下工程等建造領域取得了顯著的發展,并表現出較大的發展潛力。馬國偉、王里編著的《水泥基材料3D打印關鍵技術》一書系統地歸納了水泥基材料3D打印工藝建模的最新進展,提出了水泥基材料3D可打印性的量化指標,研究了打印微觀結構的力學各向異性,提出了3D打印結構的整體性增強方法,并對該項技術進行了展望。筆者通過對該書的學習,認為其內容詳實、可讀性強,總結要點如下。
    鋼渣和粉煤灰對重混凝土性能的影響
    鋼渣和粉煤灰對重混凝土性能的影響
    • 侯景鵬, 陳 群,史 巍,劉俊龍
    2020年第11期
    摘要
    引用本文
    摘 ? 要:研究了鋼渣和粉煤灰對C30重晶石防輻射混凝土工作性、力學性能、收縮性能、抗凍性能、抗碳化性能以及抗滲性能的影響。結果表明:重混凝土的坍落度隨粉煤灰摻量的增加而增加,隨鋼渣摻量的增加而降低;重混凝土的28 d抗壓強度隨粉煤灰摻量的增加而先增加后降低,粉煤灰摻量為30%時,28 d抗壓強度最大;重混凝土的收縮隨鋼渣和粉煤灰摻量的增加而降低,粉煤灰摻量為40%、鋼渣摻量為30%時重混凝土的60 d收縮最小,為191 με;鋼渣摻量為30%、粉煤灰摻量為40%時重混凝土凍融循環后的相對動彈性模量降低最小,抗凍性能最好;重混凝土的28 d碳化深度隨粉煤灰摻量的增加而線性增加;重混凝土的滲水高度隨鋼渣和粉煤灰摻量的增加而降低,粉煤灰摻量為40%、鋼渣摻量為30%的重混凝土滲水高度最小,為基準組的9.3%,抗滲性能大幅提高。 Abstract: The influence of steel slag and fly ash on the workability, mechanical properties, shrinkage, frost resistance, carbonation resistance and water permeability of C30 barite shield concrete was studied. The results show that the slump of heavy concrete increases with the increase of fly ash content, and decreases with the increase of steel slag content. The 28 d compressive strength of heavy concrete increases first and then decreases with fly ash content, and when the fly ash content is 30%, the 28 d compressive strength is the highest. The shrinkage of heavy concrete decreases with the addition of steel slag and fly ash, and when fly ash content is 40%, steel slag content is 30%, the shrinkage of heavy concrete at 60 d is the lowest, which is 191 με. When steel slag content is 30% and fly ash content is 40%, the relative dynamic elastic modulus of heavy concrete after freeze-thawing cycle decreases the least and the frost resistance is the best. The 28 d carbonation depth of heavy concrete increases linearly with fly ash content. The water seepage depth of heavy concrete decreases with the addition of fly ash and steel slag, and when fly ash content is 40%, steel slag content is 30%, the heavy concrete has the lowest water seepage depth, which is 9.3% of the reference heavy concrete, and the water seepage performance is greatly improved.
    侯景鵬, 陳群,史巍,等.鋼渣和粉煤灰對重混凝土性能的影響[J].混凝土與水泥制品,2020(11):92-95. HOU J P,CHEN Q,SHI W,et al.Effect of Steel Slag and Fly Ash on the Performance of Heavy Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):92-95.
    膨潤土和石灰石粉對珊瑚混凝土力學與耐久性能的影響
    膨潤土和石灰石粉對珊瑚混凝土力學與耐久性能的影響
    • 賈慧娜1,李亞麗1,張舜泉2
    2020年第11期
    摘要
    引用本文
    摘 ? 要:利用鈣基膨潤土和石灰石粉部分取代水泥,研究了不同摻量的膨潤土、石灰石粉對珊瑚混凝土力學性能與耐久性能的影響。結果表明:復摻膨潤土和石灰石粉可明顯提高珊瑚混凝土的抗壓強度和劈裂抗拉強度,且當膨潤土摻量為15%時達到最大值;復摻膨潤土和石灰石粉可有效提高珊瑚混凝土的抗Cl-滲透性和抗硫酸鹽侵蝕能力,且二者的最佳摻量均為15%。 Abstract: The effects of calcium-based bentonite and limestone powder on the mechanical properties and durability of coral concrete were studied by partially substituting cement powder with bentonite and limestone powder. The results show that the compounding of bentonite and limestone powder can significantly improve the compressive strength and splitting tensile strength of coral concrete, and reach the maximum value when the amount of bentonite is 15%. Moreover, the compounding of bentonite and limestone powder can effectively improve the resistance of coral concrete to chloride ion permeability and sulfate resistance, and the optimal content of both is 15%. ?
    賈慧娜,李亞麗,張舜泉.膨潤土和石灰石粉對珊瑚混凝土力學與耐久性能的影響[J].混凝土與水泥制品,2020(11):87-91. JIA H N,LI Y L,ZHANG S Q.Experimental Study on the Mechanical Properties and Durability of Coral Concrete Mixed with Bentonite and Limestone Powder[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 87-91.
    外摻材料對透水混凝土性能影響的研究進展
    外摻材料對透水混凝土性能影響的研究進展
    • 崔 征1,2,3,4,王達道1,2,3,4,徐志峰1,2,3,4,祝燁然1,2,3,4,唐修生1,2,3,4
    2020年第11期
    摘要
    引用本文
    摘 ? 要:透水混凝土是“海綿城市”理念中的重要一環,對于減輕排水系統負擔、緩解城市熱島效應、吸聲降噪等具有積極作用。外摻材料的不同直接影響透水混凝土的力學性能、透水性能、抗凍融性能等,基于此,敘述了傳統化學外加劑、復摻礦物摻合料和化學外加劑、樹脂類聚合物改性劑、增強增韌材料對透水混凝土性能的影響,并對其研究方向進行了展望。 Abstract: Pervious concrete is an important part of the concept of "sponge city", which plays a positive role in reducing the burden of drainage system, alleviating the urban heat island effect, and absorbing noise. The different admixture materials directly affect the mechanical properties, water permeability and freeze-thaw resistance of pervious concrete. On this basis, the effects of traditional chemical admixtures, mixing of mineral admixture and chemical admixture, resin polymer modifiers, and reinforcement and toughening materials on the properties of pervious concrete are described, and their research directions are prospected.
    崔征,王達道,徐志峰,等.外摻材料對透水混凝土性能影響的研究進展[J].混凝土與水泥制品,2020(11):83-86,91. CUI Z,WANG D D,XU Z F,et al.Research Progress on the Effects of Admixture Materials on the Properties of Pervious Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 83-86,91.
    GB 38263—2019《水泥制品單位產品能源 消耗限額》標準解讀
    GB 38263—2019《水泥制品單位產品能源 消耗限額》標準解讀
    • 田 寅,匡紅杰
    2020年第11期
    摘要
    引用本文
    摘 ?要:新制訂的國家標準GB 38263—2019《水泥制品單位產品能源消耗限額》已于2020年5月正式實施。為便于該標準的使用方準確理解標準條款的具體含義,正確貫徹實施標準條款的具體要求和規定,介紹了該標準的制訂過程,并對標準的主要條款及其制訂理由進行了解釋和說明。 Abstract: The newly formulated national standard GB 38263—2019 The Norm of Energy Consumption Per Unit Throughout of Cement Products has been officially implemented in May 2020. In order to facilitate users of the standard to accurately understand the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms, the formulation process of the standard, and explains the main provisions of the standard and the reasons for its revision are introduced. ?
    田寅,匡紅杰.GB 38263—2019《水泥制品單位產品能源消耗限額》標準解讀[J].混凝土與水泥制品,2020(11):79-82. TIAN Y,KUANG H J.Interpretation of GB 38263—2019 The Norm of Energy Consumption Per Unit Throughout of Cement Products[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):79-82.
    基于超聲波技術的?;⒅橥鈮ν獗叵到y劣化特征研究
    基于超聲波技術的?;⒅橥鈮ν獗叵到y劣化特征研究
    • 葉家輝1,田靜靜2,熊厚仁1,袁克龍2,丁樹豐1,殷旭峰1,張奕沁1,金寒燁1
    2020年第11期
    摘要
    引用本文
    摘 ? 要:針對?;⒅橥鈮ν獗叵到y服役過程存在的病害特征,利用非金屬超聲檢測儀測試了該系統在室內加速老化過程的劣化特征信號,對比分析了系統老化狀態對不同部位的超聲波波速、頻率特征信號的影響,研究了不同熱雨循環階段該系統的超聲波信號特征與宏觀裂縫位置的對應性。結果表明:對于不同熱雨循環下的?;⒅橥鈮ν獗叵到y,超聲波信號異常位置與裂縫位置具有較好的對應性,系統飾面層的劣化特征與超聲波波速信號異常數量的增長趨勢一致,據此可實現該系統劣化階段的無損檢測;隨著熱雨循環次數的增加,超聲波信號頻率中心由低頻向高頻轉移。 Abstract: Aiming at the disease characteristics of the external thermal insulation composite systems with glazed hollow bead (ETICS-GHB) during the service process, the degradation characteristic signals of the ETICS-GHB were carried out by a non-metallic ultrasonic detector in accelerated aging process indoors. The ultrasonic wave velocity and frequency characteristic signals of different parts of the ETICS-GHB were studied at different aging state. The relationship between ultrasonic signal characteristics and macro cracks location of this system in different heat-rain cycle stages was analyzed. The results show that the abnormal position of the ultrasonic signal has a good correspondence with the crack location for the ETICS-GHB under different heat-rain cycles, and the deterioration characteristics of the finish coating of the ETICS-GHB are consistent with the increasing number of abnormal ultrasonic wave velocity signals, and the degradation level of the ETICS-GHB can be achieved by the non-destructive testing. With the increase of heat-rain cycles, the frequency center of the ultrasonic signal shifts from low frequency to high frequency.
    葉家輝,田靜靜,熊厚仁,等.基于超聲波技術的?;⒅橥鈮ν獗叵到y劣化特征研究[J].混凝土與水泥制品,2020(11):74-78. YE J H,TIAN J J,XIONG H R,et al.Research on Deterioration Characteristics of External Thermal Insulation Composite Systems with Glazed Hollow Bead Based on Ultrasonic Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 74-78.
    墻體材料蓄放熱性能動態測試方法
    墻體材料蓄放熱性能動態測試方法
    • 漆貴海1,2,3,賴振彬2,3,杜 松2,3
    2020年第11期
    摘要
    引用本文
    摘 ? 要:根據墻體材料在實際環境中的動態熱傳遞,設計了一種墻體材料蓄放熱性能動態測試方法:將墻體材料置于熱室和冷室之間,對熱室環境加熱和降溫,記錄墻體材料表面及室內環境的溫度變化,分析墻體材料的熱工性能。根據延遲時間、衰減系數、升溫和降溫曲線等評價了墻體材料的保溫隔熱性能,對反射隔熱涂料復合墻體材料進行了測試。結果表明:該方法能實現在試驗室中測試墻體材料的保溫隔熱性能,并能反映出墻體材料的動態傳熱過程,具有簡單易操作,試驗結果可靠的特點。 Abstract: According to the dynamic heat transfer of the wall material in the actual environment, a dynamic test method for the heat storage and release performance of the wall material is designed. The wall material is placed between the hot room and the cold room to heat and cool the hot room environment. The temperature changes of the wall material surface and the indoor environment are recorded, and the thermal performance of the wall material is analyzed. According to the results of delay time, attenuation coefficient, heating and cooling curve, the thermal insulation performance of the wall material is evaluated, and the performance of reflective thermal insulation coating composite wall material is tested. The results show that this method can test the thermal insulation performance of wall material in the laboratory, and reflect the dynamic heat transfer process of wall material. This method is simple and feasible, and the test results are reliable.
    漆貴海,賴振彬,杜松.墻體材料蓄放熱性能動態測試方法[J].混凝土與水泥制品,2020(11):71-73. QI G H,LAI Z B,DU S.Dynamic Testing Method for Heat Storage and Release Performance of Wall Material[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):71-73.
    鋼絲網片增強混凝土外墻掛板抗彎性能研究
    鋼絲網片增強混凝土外墻掛板抗彎性能研究
    • 李清海,趙嬌嬌,李清原,高建偉,吳玉姣,周勝男
    2020年第11期
    摘要
    引用本文
    摘 ? 要:采用不同配筋率(0~1.20%)鋼絲網片對混凝土外墻掛板進行增強增韌,通過四點彎曲強度-撓度曲線,結合混凝土試件開裂過程的試驗現象,分析了配筋率對混凝土外墻掛板在彎曲荷載作用下不同階段強度、撓度的影響規律。結果表明,試件的比例極限強度、破壞強度及其對應撓度均隨配筋率的增加呈線性增加趨勢,配筋率增至1.20%時,試件比例極限強度、破壞強度分別比空白試件提高了5.33倍、3.53倍,同時試件的比例極限撓度和破壞撓度分別提高了3.77倍和3.57倍。配筋率對試件非線性變形階段的作用效果較準彈性階段更為顯著。通過對不同階段強度及其對應撓度與配筋率的擬合分析,得出強度、撓度與配筋率的數學關系,為混凝土外墻掛板的高性能結構設計提供依據。 Abstract: The steel mesh was used to strengthen and toughen concrete exterior wallboard with different reinforcement ratio(0~1.20%). Based on the strength-deflection curve of four point bending and the experimental phenomenon of concrete cracking process, the influence of reinforcement ratio on the strength and deflection of concrete exterior wallboard at different stages was analyzed. The results show that the proportional ultimate strength and failure strength with the corresponding deflection of the specimens increase with the increase of reinforcement ratio. When the reinforcement ratio increases to 1.20%, the proportional ultimate strength and failure strength of the specimens are 5.33 times and 3.53 times higher than those of the specimens without steel mesh respectively, and the proportional ultimate deflection and failure deflection of the specimens are 3.77 times and 3.57 times higher respectively. The effect of reinforcement ratio on the nonlinear deformation stage is more significant than that of quasi elastic stage. Through the fitting analysis of strength and corresponding deflection with reinforcement ratio at different stages, the mathematical relationship can be obtained between the strength and deflection with the reinforcement ratio, which provides the basis for the high-performance structural design of concrete exterior wallboard.
    李清海,趙嬌嬌,李清原,等.鋼絲網片增強混凝土外墻掛板抗彎性能研究[J].混凝土與水泥制品,2020(11):66-70. LI Q H,ZHAO J J,LI Q Y,et al.Study on the Flexural Performance of Steel Mesh Reinforced Concrete Exterior Wallboard[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):66-70.
    合成纖維混凝土彎曲韌性研究
    合成纖維混凝土彎曲韌性研究
    • 王金輝1,葛 晨2,談永泉3,俞君寶2
    2020年第11期
    摘要
    引用本文
    摘 ? 要:通過聚丙烯腈(PAN)纖維混凝土和聚乙烯醇(PVA)纖維混凝土的三點彎曲切口梁試驗,研究了合成纖維摻量和彈性模量對混凝土彎曲韌性的影響,探究了纖維混凝土跨中撓度(δ)和裂縫張開口位移(CMOD)與纖維摻量的關系。結果表明:針對混凝土彎曲韌性而言,PAN纖維與PVA纖維的合適摻量范圍分別為1.5~1.8 kg/m3和1.3~1.5 kg/m3;δ與CMOD之間存在線性關系,可以用纖維摻量與CMOD預測δ。 Abstract: The influence of the content and elastic modulus of synthetic fiber on the flexural toughness of polyacrylonitrile (PAN) fiber concrete and polyvinyl alcohol (PVA) fiber concrete was studied by the three-point bending notch beam test. The relationship between midspan deflection (δ) and crack tensioning displacement (CMOD) and fiber content of fiber concrete was investigated. The results show that the optimal content range of PAN fiber and PVA fiber are 1.5~1.8 kg/m3 and 1.3~1.5 kg/m3, respectively. There is a linear relationship between δ and CMOD, the fiber content and CMOD can be used to predict δ.
    王金輝,葛晨,談永泉,等.合成纖維混凝土彎曲韌性研究[J].混凝土與水泥制品,2020(11):61-65. WANG J H,GE C,TAN Y Q,et al.Study on Flexural Toughness of Synthetic Fiber Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):61-65.
    混雜纖維混凝土抗Cl-滲透性能試驗研究
    混雜纖維混凝土抗Cl-滲透性能試驗研究
    • 張克純1,2,余江滔3,劉柯柯3
    2020年第11期
    摘要
    引用本文
    摘 ? 要:采用改進的干濕循環浸泡法,對比研究了PE纖維混凝土、鋼纖維混凝土和混雜纖維(PE纖維+鋼纖維)混凝土的抗Cl-滲透性能。結果表明,纖維混凝土的抗Cl-滲透性與纖維總表面積之間存在線性相關性,纖維總表面積越大,混凝土抗Cl-滲透性能越差;PE纖維和混雜纖維混凝土的抗Cl-滲透性能低于普通混凝土,鋼纖維混凝土的抗Cl-滲透性能高于普通混凝土;在混雜纖維總體積摻量不變的情況下,PE纖維的摻量越多,混雜纖維混凝土的Cl-滲透系數越大,抗Cl-滲透能力越差。 Abstract: The resistance of PE fiber concrete, steel fiber concrete and hybrid fiber(PE fiber + steel fiber) concrete to chloride ion penetration was studied by the improved dry-wet cyclic immersion test. The results show that there is a linear correlation between the resistance to chloride ion penetration of fiber concrete and the total surface area of fiber in concrete. The resistance to chloride ion penetration of PE fiber concrete and hybrid fiber concrete is lower than that of ordinary concrete, while the resistance to chloride ion penetration of steel fiber concrete is slightly higher than that of ordinary concrete. Under the condition that the total volume of hybrid fiber remains unchanged, the more the content of PE fiber, the greater the permeability coefficient of chloride ion and the worse the permeability of chloride ion.
    張克純,余江滔,劉柯柯.混雜纖維混凝土抗Cl-滲透性能試驗研究[J].混凝土與水泥制品,2020(11):57-60,65. ZHANG K C,YU J T,LIU K K.Experimental Study on Resistance to Chloride Ion Penetration of Hybrid Fiber Reinforced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 57-60,65.
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