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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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    第九期

    再生骨料透水混凝土的強度和耐久性研究
    再生骨料透水混凝土的強度和耐久性研究
    • 陳 春1,徐 丹2
    2019年第9期
    摘要
    引用本文
    摘 要:用10%、30%和50%的廢棄混凝土骨料替代天然骨料制備再生透水混凝土,并對其強度、透水性能和耐久性能進行了研究。結果表明,再生透水混凝土存在最優水灰比,當再生骨料摻量為10%、30%和50%時,透水混凝土的最優水灰比分別為0.40、0.40和0.45;隨著再生骨料摻量和粒級的增加,再生透水混凝土的抗壓強度、抗折強度降低,透水性能增強;5%硅粉會一定程度上提高透水混凝土的強度,但會對其透水性能產生不利影響;再生骨料的摻加會降低透水混凝土的長期耐久性能。 Abstract: Recycled permeable concrete was prepared by replacing natural aggregate with 10%, 30% and 50% recycled concrete aggregate, and its strength, permeability and durability were studied. Results show that the optimal water-cement ratio is 0.40, 0.40, 0.45 respectively when the addition of recycled aggregate is 10%, 30%, 50%. With the increase of recycled aggregate content and particle size, the compressive strength and flexural strength of recycled permeable concrete decrease, and the permeability of recycled permeable concrete increases. The incorporation of 5% silica powder can improve the strength of permeable concrete to a certain extent, but it will have an adverse effect on its permeability performance. The addition of recycled aggregate canl reduce the long-term durability of permeable concrete.
    橡膠混凝土膠凝材料改進試驗研究
    橡膠混凝土膠凝材料改進試驗研究
    • 陳卓明,李麗娟,熊 哲
    2019年第9期
    摘要
    引用本文
    摘 要:選取水玻璃、丁苯膠乳和乳化瀝青三種輔助膠凝材料,分別等質量替代橡膠混凝土中5%、10%、15%和20%的水泥,測定各組試件的表觀密度、抗壓強度、沖擊強度和拌合物坍落度。結果表明:丁苯膠乳或乳化瀝青摻量為5%時,橡膠混凝土的綜合性能最優,坍落度和抗壓強度均得到改善;丁苯膠乳提高橡膠混凝土坍落度的效果較好,乳化瀝青提高抗壓強度的效果較好;水玻璃則不宜作為輔助膠凝材料摻入橡膠混凝土中。 Abstract: Sodium silicate, styrene-butadiene latex (SBL) and emulsified asphalt (EA) were respectively selected to replace 5%, 10%, 15% and 20% cement in rubberized concrete. The apparent density, compressive strength, impact strength, and slump of all specimens were tested. The results show that the slump and compressive strength are improved when the content of SBL or EA is 5%; the effect of SBL on improving slump of rubberized concrete is better, while the effect of EA on improving compressive strength of rubberized concrete is better; sodium silicate should not be added into rubberized concrete as a supplementary.
    陳卓明,李麗娟,熊哲.橡膠混凝土膠凝材料改進試驗研究[J].混凝土與水泥制品,2019(9):90-94. CHEN Z M,LI L J,XIONG Z.Experimental Study for Improved Cementing Materials of Rubberized Concrete[J].China Concrete and Cement Products,2019(9):90-94.
    冷卻止水螺桿對混凝土溫度裂縫影響因素及機理研究
    冷卻止水螺桿對混凝土溫度裂縫影響因素及機理研究
    • 姚 剛1,2,魏銀銀1,2,楊 陽1,2
    2019年第9期
    摘要
    引用本文
    摘 要:研發了集冷卻水管與止水螺桿優點于一體的新型冷卻止水螺桿。通過有限元軟件對無冷卻措施,水管冷卻和新型冷卻止水螺桿三種冷卻效果進行數值分析,對比了水管冷卻和新型冷卻止水螺桿對超長混凝土墻體溫度裂縫的控制效果,并將新型冷卻止水螺桿冷卻效果的數值分析結果與現場實測數據對比,驗證了基于熱流耦合算法的新型冷卻止水螺桿模型的正確性。在此基礎上,通過對新型冷卻止水螺桿的管徑、通水流量、進水溫度以及螺桿在混凝土墻體內的分布間距等因素的冷卻效果進行數值分析,研究了不同參數對施工期超長混凝土墻體溫度的影響效果,闡述了不同參數對施工期超長混凝土墻體溫度的影響機理,并給出了最佳冷卻方案。 Abstract: A new cooling water stop screw that combined the advantages of cooling water pipe and water stop screw was developed. Through the finite element software, the three cooling effects of no cooling measures, water pipe cooling and new cooling water stop screw were numerically analyzed. And the control effect of water pipe cooling and new cooling water stop screw on the temperature crack of super long concrete wall was compared. The numerical analysis results of the cooling effect of the new cooling water stop screw were compared with the field measured data, and the correctness of the new cooling water stop screw model based on the heat flow coupling algorithm was verified. On this basis, through the numerical analysis of the cooling effect of the new cooling water stop screw pipe diameter, water flow rate, inlet water temperature and the distribution distance of the screw in the concrete wall,the cooling effect of the new type of cooling stop screw was analyzed. The effects of different parameters on the temperature of super-long concrete wall during construction period were studied. The influence mechanism of different parameters on the temperature of super-long concrete wall during construction period was expounded, and the best cooling scheme was given.
    姚剛,魏銀銀,楊陽.冷卻止水螺桿對混凝土溫度裂縫影響因素及機理研究[J].混凝土與水泥制品,2019(9):84-89. YAO G,WEI Y Y,YANG Y.Research on Influence Factors and Mechanism of Cooling Water-stop Screw on Temperature Crack of Concrete[J].China Concrete and Cement Products
    預制混凝土夾心保溫墻板熱工性能試驗研究與模擬分析
    預制混凝土夾心保溫墻板熱工性能試驗研究與模擬分析
    • 徐桂明1,陳旭東2
    2019年第9期
    摘要
    引用本文
    摘 要:對四塊預制混凝土夾心墻板的熱工性能進行了試驗研究,通過改變拉結件的種類,探索其對墻板熱工性能的影響,并采用有限元軟件對其進行了模擬分析。結果表明:金屬拉結件的熱橋效應明顯,與無拉結件的預制墻板相比,采用纖維拉結件的墻板的傳熱系數提高8%,而采用不同金屬拉結件的墻板分別提高20.9%與14.3%;建議在實際工程應用中,對墻板的傳熱系數進行相應的放大,單位面積墻板的放大系數范圍為0.71%~2.52%。 Abstract: The thermal performance of four prefabricated concrete sandwich wall panels were tested, the effects of the shear connectors on the thermal performance of the wall panels were explored by changing the types of connectors, and the simulation analysis of the performance of these wall panels was carried out by using the finite element software. The results show that the thermal bridge effect caused by shear connectors is obviously. Compared with the wall panel without connectors, the heat transfer coefficient of the wall panel with fiber connectors is increased by 8%, while the heat transfer coefficient of the wall panels with different metal connectors are increased by 20.9% and 14.3%, respectively. It is suggested that the relevant thermal performance parameters of the sandwich panels should be enlarged accordingly in practical engineering applications, and the amplification factor of per unit area should be taken from 0.71% to 2.25%.
    徐桂明,陳旭東.預制混凝土夾心保溫墻板熱工性能試驗研究與模擬分析[J].混凝土與水泥制品,2019(9):79-83. XU G M,CHEN X D.Experimental Study and Numerical Analysis of Thermal Performance of Prefabricated Concrete Sandwich Insulation Wall Panels[J].China Concrete and Cement Products,2019
    裝配式混凝土剪力墻平面外性能研究
    裝配式混凝土剪力墻平面外性能研究
    • 陳思宇,朱杰江
    2019年第9期
    摘要
    引用本文
    摘 要:利用ABAQUS對豎向鋼筋連接方式不同的預制剪力墻進行建模,對比分析其平面外性能。豎向鋼筋連接方式分別為雙排逐根連接、“梅花形”部分連接及單排連接。結果表明,剪力墻平面外破壞屬于脆性破壞,墻身與地梁脫開,有傾覆趨勢,但平面外仍具有一定的承載能力和剛度。豎向鋼筋連接方式不同對預制剪力墻平面外承載力和剛度均有較大影響,由逐根連接改為部分連接其平面外極限承載力下降約15%,與現澆對比差距較大,剛度退化速度也大于現澆。 Abstract: The ABAQUS was used to model the prefabricated shear walls with different vertical reinforcement connections, and the out-of-plane performance was compared and analyzed. The vertical reinforcement connection modes were double row root-to-root connection, "plum-shaped" partial connection and single row connection. The results show that the out-of-plane damage of the shear wall is brittle failure,the wall and the ground beam are separated, but there is still a certain bearing capacity and stiffness outside the plane. Different connection modes of vertical reinforcement have a great influence on out-of-plane bearing capacity and stiffness of the prefabricated shear wall. From the root-to-root connection to the partial connection, the out-of-plane ultimate bearing capacity is reduced by about 15%,the rate of stiffness degradation is also greater than that of the cast-in-place shear wall.
    陳思宇,朱杰江.裝配式混凝土剪力墻平面外性能研究[J].混凝土與水泥制品,2019(9):76-78+83. CHEN S Y,ZHU J J.Research on Out-of-plane Performance of Prefabricated Concrete Shear Walls[J].China Concrete and Cement Products,2019(9):76-78+83.
    CFRP與BFRP加固RC柱抗震性能比較研究
    CFRP與BFRP加固RC柱抗震性能比較研究
    • 尚 聰,馬江霖,王崇革,羅思穎
    2019年第9期
    摘要
    引用本文
    摘 要:采用有限元軟件ABAQUS建立CFRP與BFRP加固RC柱的數值模型,比較研究了兩種FRP材料加固RC柱的抗震性能,并系統地討論了FRP材料類型、長細比、軸壓比、FRP加固層數等參數對RC柱抗震性能的影響。研究結果表明,模型可以較好地模擬FRP加固鋼筋混凝土圓柱的抗震性能,與試驗結果吻合。隨著FRP包裹層數增加,試件的承載力逐漸提高,但存在最佳加固層數;隨著軸壓比的增加,試件承載力有一定提高,但延性降低。在長細比一定范圍內,試件的承載力及延性得到較大提高。相同工況下,兩種FRP加固RC柱在承載力、延性、耗能能力方面相近,但考慮到價格優勢及較好的力學性能,BFRP在混凝土結構抗震加固領域有較好的應用前景。 Abstract: The numerical model of CFRP and BFRP-reinforced RC columns was established by finite element software ABAQUS. The seismic behavior of two kinds of FRP-reinforced RC columns was studied. The FRP material type, slenderness ratio, axial compression ratio and FRP reinforcement layer on the seismic performance of the RC column were systematically analyzed. The results show that the model can better simulate the seismic performance of FRP-reinforced reinforced concrete columns, which is in good agreement with the experimental results. With the increase of the number of FRP wraps, the bearing capacity of the test piece is gradually increased, but the optimal number of layers is present. With the increase of the axial compression ratio, the bearing capacity of the test piece is improved, but the ductility is reduced. In a certain range of slenderness ratio, the bearing capacity and ductility of the test piece are greatly improved. Under the same working conditions, the two FRP-reinforced RC columns are similar in bearing capacity, ductility and energy consumption. However, considering the price advantage and good mechanical properties, BFRP has a good application prospect in the field of seismic strengthening of concrete structures.
    尚聰,馬江霖,王崇革,等.CFRP與BFRP加固RC柱抗震性能比較研究[J].混凝土與水泥制品,2019(9):70-75. SHANG C,MA J L,WANG C G,et al.Comparative Study on the Seismic Performance of Reinforced Concrete Columns Strengthened with CFRP and BFRP[J].China Concrete and Cement Products,2019
    不同截面PSRC梁預制部分力學性能分析
    不同截面PSRC梁預制部分力學性能分析
    • 宋天宇1,邵永健1,張啟華1,沈 浩1,王國佐2
    2019年第9期
    摘要
    引用本文
    摘 要:為研究PSRC梁預制部分的力學性能,以截面形式和剪跨比為參數,完成了9根PSRC梁預制部分的單調靜力試驗;試驗結果表明,在剪跨比相同時,矩形截面試件承載力最大,V形其次,U形最小,三種截面試件都擁有良好的延性和變形能力;剪跨比為1.5的試件有的發生斜壓破壞、有的為剪壓破壞,剪跨比為3和4.5的試件發生受彎破壞;在此基礎上,應用ABAQUS進行數值模擬,模擬結果與試驗結果吻合良好,驗證了模型的正確性。 Abstract: In order to study the mechanical properties of the prefabricated PSRC beams, the monotonic static tests of the prefabricated PSRC beams were carried out with the section form and the shear span ratio as the parameters. The results show that bearing capacity of the rectangular cross-section specimens is the highest , the v-shaped specimens is the second, and the u-shaped specimens is the smallest with the same shear to span ratio. The specimens with a shear to span ratio of 1.5 have baroclinic failure, while those with a shear to span ratio of 3 and 4.5 have flexural failure. ABAQUS is used for numerical simulation, and the simulation results are in good agreement with the experimental results, which verified the correctness of the model.
    宋天宇,邵永健,張啟華,等.不同截面PSRC梁預制部分力學性能分析[J].混凝土與水泥制品,2019(9):66-69+75. SONG T Y,SHAO Y J,ZHANG Q H,et al.Analysis of Mechanical Properties of Prefabricated PSRC Beams with Different Sections[J].China Concrete and Cement Products,2019(9):66-69+75.
    預制混凝土構件工廠全國重點區域規劃布局研究
    預制混凝土構件工廠全國重點區域規劃布局研究
    • 劉大勝,蔣勤儉,黃清杰,趙大為,劉 滔
    2019年第9期
    摘要
    引用本文
    摘 要:裝配式建筑是用預制部品部件在工地裝配而成的建筑。發展裝配式建筑是我國建造方式的重大變革,引導建筑行業部品部件生產企業合理布局是促進裝配式建筑發展的重要任務。本文介紹了預制混凝土構件工廠的國內外調研情況,提出了我國裝配式建筑發展和預制混凝土構件工廠規劃布局的重點區域,研究建立了目標區域(城市)預制混凝土構件年市場需求量預測計算模型和典型預制構件廠模型,以及京津冀、長三角和珠三角三大城市群的預制構件廠規劃布局的建議。 Abstract: Prefabricated building is the building assembled from prefabricated parts at the construction site. The development of prefabricated buildings is a major change in the construction mode in China, guiding the rational layout of the parts manufacturing enterprises in the construction industry is an important task to promote the development of prefabricated buildings. The domestic and foreign research situation of prefabricated concrete component factory is introduced, the key areas for the development of prefabricated building and the layout of prefabricated concrete component factory in China are put forward, the forecasting model for the annual market demand of precast concrete members in the target area(city) and the typical prefabricated factory model are studied and established. In addition, some suggestions of the planning and layout of the prefabricated component factories of the three major urban agglomerations of Beijing-Tianjin-Hebei, Yangtze River Delta and Pearl River Delta are put forward.
    劉大勝,蔣勤儉,黃清杰,等.預制混凝土構件工廠全國重點區域規劃布局研究[J].混凝土與水泥制品,2019(9):60-65. LIU D S,JIANG Q J,HUANG Q J,et al.Study on Planning and Layout of Prefabricated Concrete Component Factory in Key Areas of China[J].China Concrete and Cement Products,2019(9)
    玻璃纖維增強硫鋁酸鹽水泥拉壓本構方程研究
    玻璃纖維增強硫鋁酸鹽水泥拉壓本構方程研究
    • 孫詩兵1,司國棟1,呂 鋒1,陳鐵標2,田英良1
    2019年第9期
    摘要
    引用本文
    摘 要:以耐堿玻璃纖維作為增強材料,以快硬硫鋁酸鹽水泥為膠凝材料,制備了不同玻璃纖維摻量的玻璃纖維增強水泥(GRC)。通過單軸拉伸試驗、單軸壓縮試驗研究了玻璃纖維摻量對拉壓應力-應變曲線的影響,建立了GRC的拉壓本構方程。GRC在拉、壓狀態下具有不同的本構方程形式,且彈性階段拉壓的彈性模量不同。拉伸時,彈性變形階段的彈性模量E1幾乎不受纖維摻量的影響。玻璃纖維摻量大于2%的GRC本構方程特征參數E2(塑性變形階段單位應變變化的應力變化)、σ0隨玻璃纖維摻量增加而增大。壓縮時,壓縮彈性模量E′隨著玻璃纖維的含量增加先增加后減小,3%玻璃纖維時彈性模量E′達到最大值。 Abstract: Glass fiber (GR) reinforced cement (GRC) with different GR contents were prepared. The alkali-resistant GR was used as reinforcement, and the rapid hardening sulphoaluminate cement was applied as binding materials. By the investigation of strain-stress curves induced by GR contents under tensile and compression circumstances, the constitutive equation (CE) of GRC was built. The results show that the formats of these CEs are different, and the elastic modulus E1 in elastic deformation stage of the elastic phase is also different. During the tensile tests, E1 of GRC is rarely affected by the GR contents. When the GR contents is higher than 2%, the constitutive parameter E2 and σ0 enhance with the increasing amounts of GR. During the compression tests, the elastic modulus E′ is increased first and then decreased with the growing addition of GR, and reached the maximum value at 3% GR incorporation.
    孫詩兵,司國棟,呂鋒,等.玻璃纖維增強硫鋁酸鹽水泥拉壓本構方程研究[J].混凝土與水泥制品,2019(9):54-59. SUN S B,SI G D,LYU F,et al.Study on Constitutive Equation of the Glass Fiber Reinforced Sulphoaluminate Cement Under Tensile and Compression Circumstances[J].China Concrete and Cement Products,2019(9):54-59.
    鋼纖維混凝土箱梁在爆炸荷載作用下的動態響應
    鋼纖維混凝土箱梁在爆炸荷載作用下的動態響應
    • 姜天華1,王 威1,楊云鋒1,蔡路軍2
    2019年第9期
    摘要
    引用本文
    摘 要:采用模型試驗和數值模擬相結合的方法,研究了混凝土和鋼纖維混凝土箱梁在爆炸荷載作用下的動態響應。結果表明,在爆炸荷載作用下,相較于炸藥藥量而言,結構的應變峰值對爆炸高度更為敏感,混凝土箱梁中添加適量鋼纖維后,結構的應變明顯減小,說明鋼纖維對提高結構的抗爆性有很大作用。 Abstract: The dynamic response of concrete and steel fiber reinforced concrete box girder under blast loading was studied by the combination of model test and numerical simulation. The results show that under the explosion load, the strain peaks structure is more sensitive to the explosion height than the explosive charge. After adding proper steel fiber into the concrete box girder, the strain of the structure is obviously reduced, which indicates that the steel fiber has a great effect on improving the antiknock quality of the concrete structure.
    姜天華,王威,楊云鋒,等.鋼纖維混凝土箱梁在爆炸荷載作用下的動態響應[J].混凝土與水泥制品,2019(9):50-53. JIANG T H,WANG W,YANG Y F,et al.Dynamic Response of the Steel Fiber Reinforced Concrete Box Girders under Blast Loading[J].China Concrete and Cement Products,2019(9):50-53.
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