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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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    第一期

    透水混凝土強度與透水系數關系模型研究
    透水混凝土強度與透水系數關系模型研究
    • 曲廣雷1,2,常廣利2,王顯利2,李梓赫3,劉浩宇3,孫祥濤2,李 欣2
    2022年第2期
    摘要
    引用本文
    摘 ? 要:為建立透水混凝土抗壓強度與透水系數的定量關系模型,制備了透水混凝土試件,并測試了試件的有效孔隙率、透水系數和28 d抗壓強度。結合現有模型,建立了基于Griffith斷裂理論的數學關系模型,并驗證了模型的有效性;基于本文提出的模型,選取合適參數,可以對透水混凝土性能進行有效預測。 Abstract: In order to establish a quantitative relationship model between the compressive strength and the permeable coefficient of pervious concrete, pervious concrete specimens were prepared through laboratory tests, and the effective porosity, permeable coefficient and 28 d compressive strength were measured. Combined with the existing model, the mathematical relation model based on Griffith fracture theory was established and the validity of the model was verified. Based on the model proposed in this article, selecting appropriate parameters can effectively predict the performance of pervious concrete.
    曲廣雷,常廣利,王顯利,等.透水混凝土強度與透水系數關系模型研究[J].混凝土與水泥制品,2022(2):22-26. QU G L,CHANG G L,WANG X L,et al.Study on the Relationship Model Between Pervious Concrete Strength and Pervious Coefficient[J].China Concrete and Cement Products,2022(2):22-26.
    再生PET塑料骨料對砂漿單軸受壓性能的影響
    再生PET塑料骨料對砂漿單軸受壓性能的影響
    • 陸 俊1,鮑 聰2,方劉基2,占海華3,梁超鋒2
    2022年第1期
    摘要
    引用本文
    摘 ? 要:利用廢棄PET塑料制備了再生PET塑料骨料(RPA),研究了RPA部分取代天然細骨料(0、10%、20%、30%、40%)對砂漿單軸受壓性能的影響,并建立了摻RPA砂漿的單軸受壓應力-應變本構關系。結果表明:隨著RPA取代率的增加,試件的延性增加,應力-應變曲線上升段和下降段斜率逐漸降低,峰值應力和彈性模量逐漸降低;試件的峰值應變、極限應變和抗壓韌性指數均隨著RPA取代率的增加而增大;建立的摻RPA砂漿單軸受壓本構方程計算結果與試驗結果吻合較好。 Abstract: Recycled PET plastic aggregate(RPA) was prepared from waste PET plastics. The effect of RPA partially replacing natural fine aggregate (0, 10%, 20%, 30%, 40%) on the uniaxial compressive properties of mortar was studied, and the uniaxial compressive stress-strain constitutive relationship of mortar mixed with RPA was established. The results show that with the increase of RPA replacement rate, the ductility of the specimen increases, the slopes of the rising and falling sections of the stress-strain curve gradually decrease, and the peak stress and elastic modulus gradually decrease. The peak strain, ultimate strain and compressive toughness index increase with the increase of RPA replacement rate. The established constitutive equation of the mortar mixed with RPA under uniaxial compression is in good agreement with the experimental results.
    陸俊,鮑聰,方劉基,等.再生PET塑料骨料對砂漿單軸受壓性能的影響[J].混凝土與水泥制品,2022(1):95-99. LU J,BAO C,FANG L J,et al.Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar[J].China Concrete and Cement Products,2022(1):95-99.
    攪拌站廢水對混凝土抗凍性能與力學性能的影響研究
    攪拌站廢水對混凝土抗凍性能與力學性能的影響研究
    • 胡涌瓊
    2022年第1期
    摘要
    引用本文
    摘 ? 要:研究了攪拌站廢水摻量(25%、35%、45%)對混凝土凍融循環后的質量損失、外觀形態、動彈性模量及抗壓強度的影響規律,建立了摻廢水混凝土的凍融損傷模型。結果表明:當廢水摻量為25%時,試件的質量損失較大,但抗壓強度及動彈性模量仍高于普通混凝土;當廢水摻量為35%和45%時,混凝土的抗凍性能得到顯著提高,但廢水摻量為45%的混凝土動彈性模量下降較快,廢水摻量為35%的混凝土抗凍性能最佳;建立的凍融損傷模型能夠較好地反映摻廢水混凝土的凍融損傷演化規律。 Abstract: The effects of the content of wastewater from concrete mixing station(25%, 35%, 45%) on the mass loss, appearance, dynamic elastic modulus and compressive strength of concrete after freeze-thaw cycle were studied, and the freeze-thaw damage model of concrete mixed with wastewater was established. The results show that when the content of wastewater is 25%, the mass loss of the specimen is large, but the compressive strength and dynamic elastic modulus are still higher than those of ordinary concrete. When the wastewater content is 35% and 45%, the frost resistance of concrete is significantly improved, but the dynamic elastic modulus of concrete with wastewater content of 45% decreases rapidly, and the frost resistance of concrete with wastewater content of 35% is the best. The established freeze-thaw damage model can better reflect the freeze-thaw damage evolution law of concrete mixed with wastewater.
    胡涌瓊.攪拌站廢水對混凝土抗凍性能與力學性能的影響研究[J].混凝土與水泥制品,2022(1):89-94. HU Y Q.Influence of Wastewater from Concrete Mixing Station on the Frost Resistance and Mechanical Properties of Concrete[J].China Concrete and Cement Products,2022(1):89-94.
    廢石粉對3D打印水泥砂漿性能的影響研究
    廢石粉對3D打印水泥砂漿性能的影響研究
    • 邢家瑞,于 淇,全世濤,黎玥琨,劉 超,鄧智聰,張亞梅
    2022年第1期
    摘要
    引用本文
    摘 ? 要:研究了石材加工產生的廢石粉替代部分水泥對3D打印水泥砂漿性能的影響。結果表明:總體上,隨著廢石粉摻量的增加,砂漿的流動度降低,靜態屈服應力提高,但凝結時間變化不明顯;通過調整減水劑摻量可以改善廢石粉對3D打印水泥砂漿流動性和可建造性的不利影響;廢石粉的摻入對3D打印水泥砂漿的力學性能和層間界面黏結強度不利。 Abstract: The effect of replacing part of cement with waste stone powder produced by stone processing on the performance of 3D printing cement mortar was studied. The results show that with the increase of the waste stone powder content, the fluidity of cement mortar decreases and the static yield stress increases in general, but the setting time does not change significantly. The adverse effect of waste stone powder on the fluidity and constructability of 3D printing cement mortar can be improved by adjusting the amount of water reducing agent. The incorporation of waste stone powder is detrimental to the mechanical properties and interface bonding strength of 3D printing cement mortar.
    邢家瑞,于淇,全世濤,等.廢石粉對3D打印水泥砂漿性能的影響研究[J].混凝土與水泥制品,2022(1):84-88. XING J R,YU Q,QUAN S T,et al.Study on the Influence of Waste Stone Powder on Performance of 3D Printing Cement Mortar[J].China Concrete and Cement Products,2022(1):84-88.
    JC/T 2602—2021《預應力混凝土U形板樁》標準解讀
    JC/T 2602—2021《預應力混凝土U形板樁》標準解讀
    • 蔣元海,劉紅飛,熊厚仁,黃殿武,華昕若
    2022年第1期
    摘要
    引用本文
    摘 ? 要:為便于JC/T 2602—2021《預應力混凝土U形板樁》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,簡述了該標準的編制背景、編制目的和意義,解釋說明了標準條款的具體內容,并提出了實施過程中應注意的問題。 Abstract: In order to facilitate the user of JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles to accurately understand the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms, the preparation background, purpose and significance of the JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles is briefly described, the specific contents of the standard provisions are explained in detail, and the problems that should be paid attention to in the implementation process are put forward.
    蔣元海,劉紅飛,熊厚仁,等.JC/T 2602—2021《預應力混凝土U形板樁》標準解讀[J].混凝土與水泥制品,2022(1):80-83. JIANG Y H,LIU H F,XIONG H R,et al.Interpretation on JC/T 2602—2021 Prestressed Concrete U-shaped Sheet Piles[J].China Concrete and Cement Products,2022(1):80-83.
    混凝土輕質墻板上墻含水率對干燥收縮影響的試驗研究
    混凝土輕質墻板上墻含水率對干燥收縮影響的試驗研究
    • 夏彬華1,楊偉軍1,易思容1,楊建宇1,姜鵬霄2
    2022年第1期
    摘要
    引用本文
    摘 ? 要:針對混凝土輕質墻板的上墻含水率及其對墻體干縮性能的影響,進行了含水率試驗,研究了混凝土輕質墻板上墻含水率對干縮性能及其防裂措施的影響,探索了混凝土輕質墻板干縮隨含水率的變化規律,提出了混凝土輕質墻板含水率時變模型,可為墻板合理的養護或上墻時間、干縮裂縫控制提供參考。 Abstract: Aiming at the moisture content during construction of the concrete lightweight wallboard and its influence on the dry shrinkage performance of the wall, the moisture content test was carried out. The influence of moisture content during construction of concrete lightweight wallboard on dry shrinkage performance and crack prevention measures was studied, and the variation law of dry shrinkage of concrete lightweight wallboard with moisture content was studied. Furthermore, the time-varying model of moisture content of concrete lightweight wallboard was put forward. The results can provide a reference for the reasonable maintenance time and the control of dry shrinkage cracks.
    夏彬華,楊偉軍,易思容,等.混凝土輕質墻板上墻含水率對干燥收縮影響的試驗研究[J].混凝土與水泥制品,2022(1):76-79,94. XIA B H,YANG W J,YI S R,et al.Experimental Study on the Effect of Moisture Content During Construction on Dry Shrinkage of Concrete Lightweight Wallboard[J].China Concrete and Cement Products,2022(1):76-79,94.
    玄武巖纖維筋混凝土梁正截面抗彎承載力試驗研究
    玄武巖纖維筋混凝土梁正截面抗彎承載力試驗研究
    • 熊琦龍1,周 凱1,范 佩1,吳小勇1,2
    2022年第1期
    摘要
    引用本文
    摘 ? 要:為了研究BFRP筋混凝土梁的抗彎性能,進行了不同配筋率和不同配筋形式BFRP筋混凝土梁的四點彎曲試驗,分析了試件的跨中撓度、抗彎承載力和裂縫分布規律。結果表明:BFRP筋混凝土梁的彎矩-撓度曲線表現出試件開裂、峰值彎矩為轉折點的三折線特征;BFRP筋與鋼筋混合配筋梁的彎矩-撓度曲線表現出試件開裂、鋼筋屈服和峰值彎矩為轉折點的四折線特征;BFRP筋與鋼筋混合配筋能提高鋼筋混凝土梁的抗彎承載力,減小BFRP筋混凝土梁的撓度和裂縫寬度,同時發揮BFRP筋強度高的特點;BFRP筋與鋼筋混合配筋梁符合平截面假定,并給出了正截面抗彎承載力計算公式。 Abstract: In order to study the flexural performance of concrete beams reinforced with BFRP rebar, the four-point bending tests of BFRP reinforced concrete beams with different reinforcement ratios and different reinforcement forms were carried out, and the mid-span deflection, flexural capacity, and crack distribution of the specimens were analyzed. The results show that the bending moment-deflection curves of BFRP reinforced concrete beams show the characteristics of three-fold curve with specimen cracking and peak bending moment as the turning point. The bending moment-deflection curves of beams reinforced with BFRP rebar and steel rebar show the characteristics of four-fold curve with specimen cracking, steel yield and peak bending moment as the turning point. The mixed reinforcement of BFRP rebar and steel rebar can improve the flexural capacity of the reinforced concrete beams, reduce the deflection and crack width of BFRP reinforced concrete beams, and the strength of BFRP rebar can be sufficiently utilized. The beams reinforced with BFRP rebar and steel rebar conform to the plane section assumption, and the calculation formula of flexural capacity of the beams is given.
    熊琦龍,周凱,范佩,等.玄武巖纖維筋混凝土梁正截面抗彎承載力試驗研究[J].混凝土與水泥制品,2022(1):71-75. XIONG Q L,ZHOU K,FAN P,et al.Experimental Study on Flexural Capacity of Cross Section of Basalt Fiber Reinforced Concrete Beams[J].China Concrete and Cement Products,2022(1):71-75.
    FRP布加固鋼筋混凝土短柱軸壓性能試驗研究
    FRP布加固鋼筋混凝土短柱軸壓性能試驗研究
    • 閆清峰1,張紀剛1,2,張宜聰1,張夢琳1,時成龍1
    2022年第1期
    摘要
    引用本文
    閆清峰,張紀剛,張宜聰,等.FRP布加固鋼筋混凝土短柱軸壓性能試驗研究[J].混凝土與水泥制品,2022(1):64-70. YAN Q F,ZHANG J G,ZHANG Y C,et al.Experimental Study on Axial Compression Performance of Reinforced Concrete Short Columns Strengthened with FRP Sheets[J].China Concrete and Cement Products,2022(1):64-70.
    混雜纖維再生混凝土軸壓應力-應變關系研究
    混雜纖維再生混凝土軸壓應力-應變關系研究
    • 牛海成1,吉珈琨2,張耀宗1
    2022年第1期
    摘要
    引用本文
    摘 ? 要:研究了再生粗骨料取代率、纖維的體積摻量和摻入方式對再生混凝土性能的影響,根據實測應力-應變曲線,計算出了各組試件的壓縮韌度指數和彈性模量。結果表明:再生混凝土的抗壓強度略低于天然骨料混凝土,摻入纖維可顯著提高再生混凝土的抗壓強度、韌性和彈性模量;單摻時,對于抗壓強度和彈性模量,玻璃纖維、PVA纖維的最佳摻量分別為0.45%、0.05%,對于韌性,玻璃纖維、PVA纖維的最佳摻量分別為0.45%、0.10%;當再生粗骨料取代率為50%時,玻璃纖維和PVA纖維混雜摻加對再生混凝土抗壓強度、韌性和彈性模量的提升效果優于單一纖維;當再生粗骨料取代率為100%時,單一纖維對再生混凝土抗壓強度、韌性和彈性模量的提升效果優于混雜纖維。 Abstract: The effects of recycled coarse aggregate replacement rate, fiber volume content and fiber mixing method on the properties of recycled concrete were studied. According to the measured stress-strain curve, the compressive toughness index and elastic modulus were calculated. The results show that the compressive strength of recycled concrete is slightly lower than that of natural aggregate concrete, and the addition of fibers can significantly improve the compressive strength, axial toughness and elastic modulus of recycled concrete. In single blending, for compressive strength and elastic modulus, the optimum content of glass fiber and PVA fiber is 0.45% and 0.05% respectively, and for toughness, the optimum content of glass fiber and PVA fiber is 0.45% and 0.10% respectively. When the replacement rate of recycled coarse aggregate is 50%, the improvement effect of mixed addition of glass fiber and PVA fiber on the compressive strength, toughness and elastic modulus of recycled concrete is better than that of single fiber. When the replacement rate of recycled coarse aggregate is 100%, the improvement effect of single fiber on the compressive strength, toughness and elastic modulus of recycled concrete is better than that of hybrid fiber.
    牛海成,吉珈琨,張耀宗.混雜纖維再生混凝土軸壓應力-應變關系研究[J].混凝土與水泥制品,2022(1):58-63. NIU H C,JI J K,ZHANG Y Z.Stress-strain Relationship of Hybrid Fiber Reinforced Recycled Concrete Under Axial Compression[J].China Concrete and Cement Products,2022(1):58-63.
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