<table id="qrkot"><ruby id="qrkot"></ruby></table>
  1. <acronym id="qrkot"></acronym>
  2. <tr id="qrkot"><s id="qrkot"></s></tr>
  3. <table id="qrkot"><option id="qrkot"></option></table>
  4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
  5. <track id="qrkot"></track>
    蘇州混凝土水泥制品研究院有限公司

    頭部文案

    發布時間:2020-01-06 00:00:00
    全國建材科技期刊
    全國中文核心期刊
    中國科技論文統計源期刊
    萬方數據-數字化期刊群入網期刊
    中國學術期刊(光盤版)全文收錄期刊
    華東地區優秀科技期刊
    江蘇省期刊方陣“雙效期刊”
    中國期刊網全文收錄期刊
    中國科技期刊數據庫全文收錄期刊

    全部文章

    第十期

    閃長玢巖的吸水特性及其對混凝土施工性能的影響研究
    閃長玢巖的吸水特性及其對混凝土施工性能的影響研究
    • 潘金敢1,王子龍1,柏立果1,程 猛2,毛永琳2
    2021年第10期
    摘要
    引用本文
    摘 ? 要:測試了閃長玢巖的吸水特性,研究了閃長玢巖作為粗骨料對混凝土施工性能的影響。結果表明:閃長玢巖碎石內部的裂隙、孔隙較發達,吸水率高,但吸水速率慢;閃長玢巖的摻入使得混凝土拌合物的流動性損失顯著增加,泌水率降低;采用骨料預濕工藝和摻減水劑的方法可以解決閃長玢巖混凝土的施工性能問題。 Abstract: The water absorption characteristics of diorite porphyrite was tested, and its influence on the construction performance of concrete was studied. The results show that the fissures and pores in the diorite porphyrite are relatively developed, and the water absorption is high, but the water absorption rate is slow. The addition of diorite porphyrite significantly increases the fluidity loss of concrete mixture and reduces the bleeding rate. The problem of construction performance of diorite porphyrite concrete can be solved by using aggregate pre-wetting technology and adding water reducing agent.
    潘金敢,王子龍,柏立果,等.閃長玢巖的吸水特性及其對混凝土施工性能的影響研究[J].混凝土與水泥制品,2021(10):95-99. PAN J G,WANG Z L,BAI L G,et al.Study on Water Absorption Characteristics of Diorite Porphyrite and Its Influence on the Construction Performance of Concrete[J].China Concrete and Cement Products,2021(10):95-99.
    納米SiO2對摻膨脹劑堿礦渣砂漿力學及收縮性能的影響
    納米SiO2對摻膨脹劑堿礦渣砂漿力學及收縮性能的影響
    • 田 翔,陳佩圓,婁 星,李 進
    2021年第10期
    摘要
    引用本文
    摘 ? 要:研究了納米SiO2摻量對摻膨脹劑堿礦渣砂漿抗壓強度、自收縮、干燥收縮和孔隙率的影響。結果表明:膨脹劑的摻入有助于減少堿激發礦渣砂漿的自收縮和干燥收縮,但會顯著降低早期強度;摻入2%納米SiO2可基本補償由于摻入膨脹劑造成的強度損失,且對堿礦渣砂漿自收縮和干燥收縮的影響較??;適量納米SiO2的摻入可顯著降低摻膨脹劑堿礦渣砂漿的孔隙率。 Abstract: The effects of nano-SiO2 content on the compressive strength, self-shrinkage, dry shrinkage and porosity of the alkali-activated slag mortar(AASM) with expansion agent were analyzed. The results show that the addition of expansive agent can reduce the self-shrinkage and dry shrinkage of AASM, but can significantly reduce its early strength. The addition of 2% nano-SiO2 can basically compensate the strength loss caused by the addition of expansive agent, and has little effect on the self-shrinkage and dry shrinkage of AASM. Appropriate amount of nano-SiO2 can significantly reduce the porosity of AASM with expansion agent. ?
    田翔,陳佩圓,婁星,等.納米SiO2對摻膨脹劑堿礦渣砂漿力學及收縮性能的影響[J].混凝土與水泥制品,2021(10):91-94. TIAN X,CHEN P Y,LOU X,et al.Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent[J].China Concrete and Cement Products,2021(10):91-94.
    廢玻璃粉對高延性水泥基復合材料性能的影響
    廢玻璃粉對高延性水泥基復合材料性能的影響
    • 李碧雄,張治博,汪知文
    2021年第10期
    摘要
    引用本文
    摘 ? 要:采用粒徑為75~300 μm的廢玻璃粉取代部分河砂制備了高延性水泥基復合材料(HDCC),研究了廢玻璃粉取代率(10%、20%、30%)對HDCC抗壓、抗拉和抗彎性能以及流動性的影響。結果表明:廢玻璃粉的摻入提高了HDCC的流動度;HDCC的抗壓強度隨廢玻璃粉取代率的增加而增大;當廢玻璃粉取代率為10%時,HDCC的拉伸性能略有改善,取代率繼續增大時,抗拉性能劣化;隨廢玻璃粉取代率的增加,HDCC的彎曲韌性降低,裂縫數量減少,裂縫寬度增大。此外,拉伸過程中廢玻璃粉對PVA纖維有刮傷,削弱了PVA纖維的拉伸性能,導致HDCC的抗拉強度和抗彎強度降低。 Abstract: High ductility cementitious composites (HDCC) were prepared by replacing part of river sand with waste glass powder with a particle size of 75~300 μm, and the effects of waste glass powder replacement rates(10%、20%、30%) ?on the compressive, tensile and flexural properties and fluidity of HDCC were studied. The results show that the fluidity of HDCC is improved by adding waste glass powder. The compressive strength of HDCC increases with the increase of waste glass powder replacement rate. When waste glass powder replacement rate is 10%, the tensile properties of HDCC are slightly improved, and the tensile properties are deteriorated when the replacement rate continues to increase. With the increase of waste glass powder replacement rate, the bending toughness of HDCC decreases, the number of cracks decreases and the width of cracks increases. In addition, the waste glass powder scratches PVA fiber during the tensile process, which weakens the tensile properties of PVA fiber, thus resulting in the decrease of tensile strength and bending strength of HDCC.
    李碧雄,張治博,汪知文.廢玻璃粉對高延性水泥基復合材料性能的影響[J].混凝土與水泥制品,2021(10):86-90,94. LI B X,ZHANG Z B,WANG Z W.Influence of Waste Glass Powder on the Properties of High Ductility Cementitious Composites[J].China Concrete and Cement Products,2021(10):86-90,94.
    瀝青攪拌站廢粉對混凝土力學與耐久性能的影響研究
    瀝青攪拌站廢粉對混凝土力學與耐久性能的影響研究
    • 張蘭峰1,王恒昌2,藍亞明3,胡 勝1,鄧再桔1
    2021年第10期
    摘要
    引用本文
    張蘭峰,王恒昌,藍亞明,等.瀝青攪拌站廢粉對混凝土力學與耐久性能的影響研究[J].混凝土與水泥制品,2021(10):81-85. ZHANG Lan-feng, WANG Heng-chang, LAN Ya-ming,et al.Study on the Effect of Waste Powder From Asphalt Mixing Station on the Mechanical and Durability of Concrete[J].China Concrete and Cement Products,2021(10):81-85.
    不銹鋼管與鋼纖維增強再生混凝土組合柱的軸壓性能研究
    不銹鋼管與鋼纖維增強再生混凝土組合柱的軸壓性能研究
    • 黃 波1,張 亮2,翟江棚3
    2021年第10期
    摘要
    引用本文
    摘 ? 要:研究了不同再生骨料替代率下,不銹鋼管與鋼纖維增強再生混凝土組合柱的軸壓性能,獲得了試件的破壞形態、荷載-位移曲線和軸壓剛度。結果表明:根據荷載-位移曲線的變化特征,可將試件按承載力穩定性分為不穩定和穩定兩類;不穩定試件峰值荷載后的荷載-位移曲線快速探底,此后荷載開始緩慢提升,軸向變形快速增大;穩定試件峰值荷載后的荷載-位移曲線沿水平方向發展,試件的持荷能力突出;試件的軸壓剛度在0.3~0.9倍的峰值荷載時達到最大,此時鋼與混凝土的材料損傷相對較小,鋼管對混凝土的約束效應相對有效;隨著再生骨料替代率的增大,試件的軸壓剛度逐漸降低;鋼纖維抑制了裂縫的發展,維護了混凝土的整體性,從而提高了試件的軸壓剛度。 Abstract: The axial compression performance of stainless steel pipe and steel fiber reinforced recycled concrete composite columns with different recycled aggregate replacement rates was studied, and the failure mode, load-displacement curve and axial compression stiffness were obtained. The results show that according to the characteristics of load-displacement curve, the specimens can be divided into unstable and stable types according to the bearing capacity stability. The load-displacement curve of the unstable specimen after the peak load quickly reaches the bottom, after which the load starts to increase slowly, and the axial deformation increases rapidly. The load-displacement curve of the stable specimen ?after the peak load develops in the horizontal direction, and the load-holding capacity of the specimen is outstanding. The axial compression stiffness of the specimen reaches the maximum when the load is 0.3~0.9 times of the peak load, and at this time, the material damage of steel and concrete is relatively small, and the restraint effect of steel pipe on concrete is relatively effective. With the increase of the replacement rate of recycled aggregate, the axial compression stiffness of the specimen decreases gradually. The steel fiber inhibits the development of cracks and maintains the integrity of the concrete, thereby improving the axial stiffness of the specimen.
    黃波,張亮,翟江棚.不銹鋼管與鋼纖維增強再生混凝土組合柱的軸壓性能研究[J].混凝土與水泥制品,2021(10):77-80. HUANG B,ZHANG L,ZHAI J P.Study on Axial Compression Performance of Stainless Steel Pipe and Steel Fiber Reinforced Recycled Concrete Composite Columns[J].China Concrete and Cement Products,2021(10):77-80.
    不同隔振方案下混凝土框架結構的抗震性能對比與優化分析
    不同隔振方案下混凝土框架結構的抗震性能對比與優化分析
    • 盧紅霞1,周振綱2
    2021年第10期
    摘要
    引用本文
    摘 ? 要:為了分析和對比不同隔振方案下混凝土框架結構的抗震性能,建立了混凝土框架三維模型,設定基礎隔振、2層隔振、4層隔振和6層隔振四種隔振方案,對地震輸入參數和隔振支座參數進行了研究,依據SAP軟件內置的EL波和CPC波,分析了模型的基礎剪應力、層間剪應力和頂層結構加速變化規律。結果表明:不同地震波輸入后,有隔振的模型層間剪應力、基礎剪應力和頂層加速度相較于無隔振方案均大幅降低,但水平方向上差別不大;采用基礎隔振和2層隔振后,模型的基礎剪應力從10 988~13 666 kN降至2 366~3 544 kN,降低幅度達73%~81%;四種隔振方案的綜合評價值分別為0.89、0.91、0.83和0.70,其中,2層隔振方案的施工成本和抗震性能均最優,基礎隔振方案次之,但施工成本稍高,4層和6層隔振方案較差。 Abstract: In order to analyze and compare the seismic performance of concrete frame structure under different vibration isolation schemes, a three-dimensional model of concrete frame structure was established, and four vibration isolation schemes were set for foundation vibration isolation, 2-story vibration isolation, 4-story vibration isolation, and 6-story vibration isolation, and the seismic input parameters and vibration isolation support parameters were studied. According to the built-in EL wave and CPC wave of SAP software, the variation laws of foundation shear stress, interlayer shear stress and acceleration of top structure of the model were analyzed. The results show that after different seismic waves are input, the interlayer shear stress, ?foundation shear stress and top floor acceleration of the vibration isolation model are significantly reduced compared with those without vibration isolation scheme, but there is little difference in the horizontal direction. For foundation vibration isolation and 2-story vibration isolation, the foundation shear stress of the model decreases from 10 988~13 666 kN to 2 366~3 544 kN, with a reduction range of 73%~81%. The comprehensive evaluation values of the four vibration isolation schemes are 0.89, 0.91, 0.83 and 0.70 respectively. Among them, the construction cost and seismic performance of the 2-story vibration isolation scheme are the best, and the foundation vibration isolation scheme is the second, but the construction cost is slightly higher, and the 4-story and 6-story vibration isolation schemes are poor.
    盧紅霞,周振綱.不同隔振方案下混凝土框架結構的抗震性能對比與優化分析[J].混凝土與水泥制品,2021(10):72-76. LU H X,ZHOU Z G.Analysis of Seismic Performance of Concrete Frame Structure Under Different Vibration Isolation Schemes[J].China Concrete and Cement Products,2021(10):72-76.
    灌漿接頭單向拉伸性能的研究分析
    灌漿接頭單向拉伸性能的研究分析
    • 佟曉超,王 博,昌文芳,崔德奎
    2021年第10期
    摘要
    引用本文
    摘 ? 要:研究了灌漿料和鋼筋之間的黏結強度與灌漿料抗壓強度的關系,分析了利用新型工藝制造的套筒是否滿足JGJ 355—2015《鋼筋套筒灌漿連接應用技術規程》的要求,并通過既有168個鋼筋拔出試驗數據驗證了黏結強度與灌漿料抗壓強度之間的線性關系。結果表明:黏結強度與灌漿料抗壓強度存在強相關性;利用滾壓、擠壓、鑄造和切削工藝制得的套筒均滿足JGJ 355—2015對于連接件破壞的要求。 Abstract: The relationship between the bond strength of grouting materials and steel bar and the compressive strength of grouting materials was studied, and whether the sleeve made by the new technology could meet the requirements of JGJ 355—2015 Technical Specification for Groute Sleeve Splicing of Rebars was analyzed. The linear relationship between the bond strength and the compressive strength of grouting materials was verified by using the existing datas of 168 rebar pulling out tests. The results show that there is a strong correlation between bond strength and compressive strength of grouting materials. The sleeves made by rolling, extrusion, casting and cutting process can meet the requirements of JGJ 355—2015 for connection failure.
    佟曉超,王博,昌文芳,等.灌漿接頭單向拉伸性能的研究分析[J].混凝土與水泥制品,2021(10):67-71. TONG X C,WANG B,CHANG W F,et al.Research and Analysis of Uniaxial Tensile Properties of Grouting Joints[J].China Concrete and Cement Products,2021(10):67-71.
    超輕泡沫混凝土結構斷層成因及抑制措施研究
    超輕泡沫混凝土結構斷層成因及抑制措施研究
    • 楊 俊1,2,楊鼎宜1,王武祥2,3,劉曉通4,張磊蕾2,3,王愛軍2,吳子豪2
    2021年第10期
    摘要
    引用本文
    摘 ? 要:研究了超輕泡沫混凝土結構斷層成因及抑制措施。結果表明:水膠比、漿體溫度、速凝劑和纖維摻量對超輕泡沫混凝土中結構斷層的形成有重要影響;通過改善發泡漿體的性能、優化水溫及速凝劑摻量來平衡料漿的發泡速率和凝結硬化速率、添加纖維來提高多孔結構抵抗內應力的能力,均能有效解決超輕泡沫混凝土結構斷層問題;適宜的技術參數為:水膠比控制在0.885~0.965之間,水溫設定為30 ℃,速凝劑摻量為6.0%,纖維摻量不低于0.75%。 Abstract: The causes of structural faults and the suppression measures of ultra light foamed concrete were studied. The results show that the water-binder ratio, slurry temperature, accelerating agent and fiber content have important effects on the formation of structural faults in ultra light foamed concrete. The fault problem of ultra light foamed concrete structure can be effectively solved by improving the performance of the foamed slurry, optimizing the water temperature and the accelerating agent content to balance the foaming rate and setting and hardening rate of the slurry, and adding fibers to improve the ability of the porous structure to resist internal stress. The suitable technical parameters are as follows: water-binder ratio is controlled between 0.885 and 0.965, water temperature is 30 ℃, accelerator agent content is 6.0%, fiber content is not less than 0.75%.
    楊俊,楊鼎宜,王武祥,等.超輕泡沫混凝土結構斷層成因及抑制措施研究[J].混凝土與水泥制品,2021(10):62-66. YANG J,YANG D Y,WANG W X,et al.Study on Causes and Restraining Measures of Ultra Light Foamed Concrete Structure Faults[J].China Concrete and Cement Products,2021(10):62-66.
    交變荷載作用下CFRP布加固RC梁耐久性能試驗研究
    交變荷載作用下CFRP布加固RC梁耐久性能試驗研究
    • 王吉文1,杜曉明2,袁振圣3
    2021年第10期
    摘要
    引用本文
    摘 ? 要:為了探究CFRP布加固鋼筋混凝土梁(RC梁)在交變荷載作用下的耐久性,對8根CFRP布加固RC梁進行了恒載和交變荷載作用下的15 d、30 d老化試驗,并通過三點彎曲試驗得到了試驗梁在不同荷載作用下的破壞模式、極限荷載、極限應變、彎曲性能、裂縫數量以及裂縫寬度。結果表明:經交變荷載作用15 d、30 d后,CFRP布加固RC梁的力學性能下降顯著,試驗梁的極限荷載、剝離荷載與極限應變均呈下降趨勢;與相同齡期下的恒載(24 kN)相比,交變荷載作用15 d、30 d后,試驗梁的極限應變平均降低了11.44%、15.23%;交變載荷作用下CFRP布加固RC梁的抗裂性能與彎曲性能減弱程度比恒載作用更顯著。 Abstract: In order to explore the durability of reinforced concrete(RC) beams strengthened with CFRP sheets under alternating loads, eight CFRP cloth-reinforced RC beams were subjected to 15 d and 30 d aging tests under dead and alternating loads, and the failure mode, ultimate strain, bending properties, crack number and crack width of test beams under different loads were obtained through the three-point bending tests. The results show that after 15 d and 30 d of alternating loads, the mechanical properties of RC beams strengthened with CFRP sheets decrease significantly, and the ultimate load, peeling failure load and ultimate strain of the test beams decrease. Compared with the dead load(24 kN) under the same age, the ultimate strain of the test beam is reduced by 11.44% and 15.23% on average after the alternating loads is applied for 15 d and 30 d. The crack resistance and bending properties of the test beams under alternating loads is weaker than that under dead loads.?
    王吉文,杜曉明,袁振圣.交變荷載作用下CFRP布加固RC梁耐久性能試驗研究[J].混凝土與水泥制品,2021(10):57-61. WANG J W,DU X M,YUAN Z S.Experimental Study on Durability of RC Beams Strengthened with CFRP Sheets Under Alternating Loads[J].China Concrete and Cement Products,2021(10):57-61.
    BFRP增強水泥砂漿薄板力學性能試驗研究
    BFRP增強水泥砂漿薄板力學性能試驗研究
    • 劉蒲云1,雷夢珂2,3,汪 昕2,3,王凱輝2,3
    2021年第10期
    摘要
    引用本文
    摘 ? 要:通過四點彎曲試驗和拉伸試驗研究了灰砂比、增強材料種類及布置方式對水泥砂漿薄板力學性能的影響。結果表明:增大灰砂比能提高試件的彎曲開裂荷載;縮小BFRP筋的筋網尺寸能提高試件的極限荷載;增大BFRP網格厚度能改善試件的拉伸能力;摻短切玄武巖纖維的BFRP網格增強試件的抗彎和抗拉能力較好,是FRP永久模板的優選方案。 Abstract: Through four-point bending test and tensile test, the effect of cement-sand ratio, reinforcement material type and layout method on the mechanical properties of cement mortar slab was studied. The results show that the increase of cement-sand ratio can enhence the bending cracking load of the specimen. Reducing the size of BFRP bar mesh can increase the ultimate load of the specimen. Increasing the thickness of the BFRP mesh can improve the tensile capacity of the specimen. The BFRP mesh reinforced specimen mixed with chopped basalt fiber has good flexural and tensile capacity, which is the preferred scheme of FRP permanent formwork.
    劉蒲云,雷夢珂,汪昕,等.BFRP增強水泥砂漿薄板力學性能試驗研究[J].混凝土與水泥制品,2021(10):52-56,61. LIU P Y,LEI M K,WANG X,et al.Experimental Study on Mechanical Properties of BFRP Reinforced Cement Mortar Slab[J].China Concrete and Cement Products,2021(10):52-56,61.
    上一頁
    1
    2
    3

    關注《混凝土與水泥制品》

    總訪問量 468,401   網站統計

    官方微信公眾號關閉
    蘇州混凝土水泥制品研究院有限公司

    關于我們    |    聯系我們    |    訂購雜志    |    回到頂部

    版權所有:中國混凝土與水泥制品網  蘇ICP備10086386號   網站建設:中企動力 蘇州

    版權所有:中國混凝土與水泥制品網

    蘇ICP備10086386號

    網站建設:中企動力 蘇州

    国产偷窥摄综合色区
      <table id="qrkot"><ruby id="qrkot"></ruby></table>
    1. <acronym id="qrkot"></acronym>
    2. <tr id="qrkot"><s id="qrkot"></s></tr>
    3. <table id="qrkot"><option id="qrkot"></option></table>
    4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
    5. <track id="qrkot"></track>