<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

    第二期

    珊瑚砂和玻璃微珠制備超高性能混凝土的試驗研究
    珊瑚砂和玻璃微珠制備超高性能混凝土的試驗研究
    • 胡 堯1,陳飛翔2,3,4,張國志2,3,4,陳尚雷2,3,4,楊榮輝2,3,4
    2021年第2期
    摘要
    引用本文
    摘 ? 要:采用珊瑚砂、空心玻璃微珠兩種輕質材料等比例取代石英砂制備了超高性能混凝土(UHPC),并對其表觀密度和力學性能進行了研究。試驗結果表明:珊瑚砂經過預處理后可以取代石英砂制備UHPC,表觀密度降低了10.5%;空心玻璃微珠取代10%的石英砂制備的UHPC表觀密度降低了11.5%;將珊瑚砂與空心玻璃微珠復合作為骨料制備出的UHPC表觀密度降低了20.2%。 Abstract: Lightweight ultra-high performance concrete was prepared by replacing the quartz sand with two kinds of lightweight materials: coral reef sand and hollow glass microsphere. The test results show that after pretreatment, coral reef sand can replace quartz sand to produce ultra-high performance concrete, and the bulk density is reduced by 10.5%. Hollow glass microspheres replace 10% quartz sand to produce ultra-high performance concrete, and the bulk density is reduced by 11.5%. At the same time, the combination of coral reef sand and hollow glass microsphere as aggregates can also be used to prepare ultra-high performance concrete, and the bulk density is reduced by 20.2%.
    胡堯,陳飛翔,張國志,等.珊瑚砂和玻璃微珠制備超高性能混凝土的試驗研究[J].混凝土與水泥制品,2021(2):1-4. HU Y,CHEN F?X,ZHANG G?Z,et al.Experimental Study on Preparation of Ultra-high Performance Concrete with Coral Reef Sand and Glass Microsphere[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):1-4.
    減縮型聚羧酸系減水劑SRPC-7的合成與性能研究
    減縮型聚羧酸系減水劑SRPC-7的合成與性能研究
    • 李崇智,曹瑩瑩,牛振山,吳慧華
    2021年第2期
    摘要
    引用本文
    摘 ? 要:合成了馬來酸二乙二醇單丁醚的酯類單體,將其與甲基烯丙基聚乙二醇和丙烯酸(AA)、甲基丙烯磺酸鈉(MAS)、過硫酸銨(APS)等共聚成一種具有良好分散性與保坍能力的減縮型聚羧酸系減水劑SRPC-7。結果表明:2.0%的SRPC-7溶液表面張力為35.2 mN/m,低于普通聚羧酸系減水劑PC的表面張力(53.9 mN/m);摻兩種聚羧酸減水劑的砂漿與混凝土試件收縮率均低于空白組,摻SRPC-7的砂漿試件28 d收縮率下降了39.5%,摻SRPC-7的混凝土試件28 d收縮率比為55.4%,SRPC-7有利于提高混凝土的抗收縮開裂性能。 Abstract: The ester monomer of maleic acid diethylene glycol monobutyl ether was synthesized, and it was combined with methallyl polyethylene glycol, acrylic acid(AA), sodium methacrylate sulfonate(MAS), ammonium persulfate(APS) and other copolymerization into a shrinkage reducing polycarboxylate superplasticizer SRPC-7, which had good dispersibility and slump retention ability. The results show that the surface tension of the 2.0% SRPC-7 solution is 35.2 mN/m, which is far lower than the 53.9 mN/m of polycarboxylate superplasticizer PC. The shrinkage of the mortar and concrete mixed with PC is lower than that of the blank sample. The 28 d shrinkage rate of the cement mortar test block mixed with SRPC-7 decreases by 39.5%, and the 28 d shrinkage ratio of the concrete mixed with SRPC-7 is 55.4% of the blank group, which is conducive to the shrinkage and cracking resistance of concrete.
    李崇智,曹瑩瑩,牛振山,等.減縮型聚羧酸系減水劑SRPC-7的合成與性能研究[J].混凝土與水泥制品,2021(2):5-7,12. LI C Z,CAO Y Y,NIU Z S,et al.Study on Synthesis and Properties of Shrinkage Reducing Polycarboxylate Superplasticizer SRPC-7[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):5-7,12.
    高流動性3D打印水泥基材料制備及性能研究
    高流動性3D打印水泥基材料制備及性能研究
    • 魏 瑋1,楊 濤2
    2021年第2期
    摘要
    引用本文
    摘 ? 要:為了制備性能良好的3D打印膠凝材料,用堿激發劑對粉煤灰/礦渣膠凝材料進行激發得到了滿足可打印性和力學性能的基礎材料,并分析了影響膠凝材料性能的最主要因素,基于微觀試驗結果分析了粉煤灰和堿激發劑對膠凝材料性能的影響機理。結果表明:基礎材料的合適摻量和組成為:粉煤灰30%、堿膠比0.56%、堿含量5%、激發劑模數1.0;宜選用CaO含量適中的礦渣,激發劑靜置時間應為48 h;影響膠凝材料流動性和力學性能的最主要因素為堿含量;相比于純礦渣膠凝材料,粉煤灰的摻入使材料表面出現微裂縫,使其強度降低,而堿激發劑的摻入,增強了膠凝材料的密實性,提高了強度。 Abstract: In order to prepare 3D printed cementitious materials with good properties, fly ash/slag cementitious materials were excited by alkali activator, the composition of basic materials satisfying the printability and mechanical properties was obtained, and the main factors affecting the properties of cementitious materials were analyzed. The influence mechanism of fly ash and alkali activator on the properties of cementitious materials was analyzed by microcosmic experiment. The results show that the proper content and composition of the basic materials are as follows: fly ash 30%, ratio of alkali activator soultion to cementitious material 0.56%, alkali content 5%, activator modulus 1.0. The slag with moderate CaO content should be selected and the static time of the activator should be 48 h. The alkali content is the most important factor that affects the fluidity and mechanical properties of cementitious materials. Compared with the pure slag cementitious material, the addition of fly ash causes the micro-cracks on the surface of the material and reduces its strength, while the addition of alkali activator enhances the compactness and strength of the cementitious material.
    魏瑋,楊濤.高流動性3D打印水泥基材料制備及性能研究[J].混凝土與水泥制品,2021(2):8-12. WEI W,YANG T.Study on Preparation and Properties of High Fluidity 3D Printed Cement-based Materials[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):8-12.
    飽和泥漿法透水混凝土抗堵性試驗研究
    飽和泥漿法透水混凝土抗堵性試驗研究
    • 史俊禮1,蔡基偉1,高國防2,付萬長1,周奕菡1,王 顯1
    2021年第2期
    摘要
    引用本文
    摘 ? 要:以表觀填隙系數為主要控制指標制備了不同強度等級的透水混凝土,分析了透水指標與連通孔隙率的關系。采用黃泛區粉土飽和泥漿作為堵塞介質,測定了預定次數堵塞(淋泥-晾干)循環后的各項透水指標,評價了飽和泥漿對透水混凝土抗堵塞性能的影響。結果表明:透水混凝土各項透水指標與連通孔隙率密切相關;當體系水灰(膠)比為0.24、表觀填隙系數為0.70、高性能減水劑摻量適當時,透水混凝土抗壓強度達到最高(28.3 MPa)且不積漿;經過堵塞循環后,透水混凝土的透水性下降明顯,與摻減水劑試樣相比,未摻減水劑試樣的透水性損失速度快;初始連通孔隙率為10.5%的透水混凝土,經受近30次飽和泥漿的堵塞循環后,透水系數基本衰減到相關規程規定的下限值以下。 Abstract: The samples were prepared by controlling apparent paste-void ratio in pervious concrete, and the relation of permeable parameters to continuous porosity was analyzed. The saturated slurry made of silt in Yellow River Flood Area played a role of clogging medium. The permeable parameters were measured after the samples suffered scheduled clogging (slurry sprinkling - air drying) cycles to evaluate the effect of saturated slurry on resistance of pervious concrete to clogging. The results reveal that the permeable parameters of pervious concrete are closely related to its continuous porosity. The pervious concrete with the highest strength (28.3 MPa) and without paste flow can be prepared with water-cement (binder) ratio of 0.24, proper dosage of superplasticizer and in apparent paste-void ratio of approximate 0.70. The permeability of pervious concrete obviously reduces after clogging cycles. The permeability of pervious concrete samples without superplasticizer generally loses faster than that of samples with superplasticizer. For the pervious concrete with initial continuous porosity of 10.5%, its coefficient of permeability decreases to less than minimum value defined by related specification after nearly 30 clogging cycles.
    史俊禮,蔡基偉,高國防,等.飽和泥漿法透水混凝土抗堵性試驗研究[J].混凝土與水泥制品,2021(2):13-17,22. SHI J L,CAI J W,GAO G F,et al.Experimental Study on Resistance to Clogging of Pervious Concrete by Saturated Slurry Method[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):13-17,22.
    粉煤灰對淡化海砂混凝土性能的影響
    粉煤灰對淡化海砂混凝土性能的影響
    • 鮑聰1,梁超鋒1,2,占海華1,3,費洗非4,侯少丹2,郭偉4
    2021年第2期
    摘要
    引用本文
    摘 ? 要:選取兩種不同來源的粉煤灰(FAⅠ、FAⅡ),研究了其品質差異和摻量(0、15%、30%、45%)及水膠比(0.5、0.4、0.3)對淡化海砂混凝土工作性、力學性能和耐久性能的影響。研究表明:相較于FAⅡ,FAⅠ型粉煤灰的需水量更小,采用較少的減水劑能使新拌混凝土具有良好的工作性;在水膠比相同的情況下,FAⅠ型粉煤灰對混凝土后期強度發展有更加積極的影響;隨著粉煤灰摻量的增加,淡化海砂混凝土的電通量值均先減小后增大,且FAⅠ型粉煤灰對改善混凝土抗Cl-滲透性能更優;隨著齡期增長,三種水膠比下FAⅡ型粉煤灰摻量不宜高于15%,而水膠比為0.4和0.3時,FAⅠ型粉煤灰最大摻量可達30%~45%。 Abstract: The influence of two different fly ash FAⅠ, FAⅡand their replacement ratio (0, 15%, 30%, 45%), different water-binder ratio (0.5、0.4、0.3) on the workability, mechanical properties and durability of desalted sea sand concrete was studied. The results show that the water requirement of FAⅠis lower than that of FAⅡ. FAⅠcan use less water-reducing agent to keep the fresh concrete with good workability. FAⅠhas a more positive impact on the later strength development of concrete. As the increase of the fly ash replacement ratio, the electrical flux value of desalinated sea sand concrete decreases first and then increases, and FAⅠis better for improving the resistance of concrete to chloride ion penetration. As the age increases, the replacement ratio of FAⅡshould not be higher than 15%. The maximum amount of FAⅠcan reach 30%~45% when the water-binder ratios are 0.4 and 0.3.
    鮑聰,梁超鋒,占海華,,等.PMMA聚合物復合混凝土的制備及機理研究[J].混凝土與水泥制品,2021(2):18-22. BAO C,LIANG C F,ZHAN H H,et al.Effect of Fly Ash on the Properties of Desalinated Sea Sand Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):18-22.
    變溫歷程對混凝土抗裂效能的影響
    變溫歷程對混凝土抗裂效能的影響
    • 卞桂榮1,李寶枝1,李 明2,3,徐 文4,田 倩2,3
    2021年第2期
    摘要
    引用本文
    摘 ? 要:為探究CEA和HME-V外加劑在變溫歷程實體混凝土結構中抗裂的效果,研究了溫度歷程對此類混凝土抗裂效能的影響。結果表明:溫度歷程對CEA和HME-V外加劑補償收縮變形的影響顯著,CEA的膨脹速率隨溫度的升高而加快,且在開裂風險高的溫降階段無補償收縮變形作用,HME-V在溫升及溫降階段均發揮較好的補償變形作用,且與混凝土溫度歷程匹配較好;實際工程宜評估實體結構變溫歷程條件下CEA和HME-V外加劑的補償收縮變形能力來優選抗裂效能較好的外加劑,并在滿足設計要求的情況下,參考變溫歷程條件下混凝土強度的發展來確定拆模時間。 Abstract: In order to study the CEA and HME-V admixture in entity structure under variable temperature condition, the efficacy of concrete with CEA and HME-V under variable temperature condition was investigated. The results indicate that temperature condition has a significant impact on the compensation shrinkage deformation of crack-resistance agent. The expansion rate of CEA increases with the increase of temperature, and no compensation shrinkage deformation is generated in temperature drop stage with high cracking risk. HME-V can compensate shrinkage deformation not only in the temperature rise stage but also in the entire process, which matches well with the temperature process of entity structure. The ability of CEA and HME-V admixture to compensate shrinkage deformation should be evaluated to select the admixture with better crack resistance and form removal time for engineering in accordance with design and standards.
    卞桂榮,李寶枝,李明,等.變溫歷程對混凝土抗裂效能的影響[J].混凝土與水泥制品,2021(2):23-26. BIAN G R,LI B Z,LI M,et al.Influence of Variable Temperature Condition on Crack Resistance of Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):23-26.
    珊瑚砂水下不分散混凝土性能試驗研究
    珊瑚砂水下不分散混凝土性能試驗研究
    • 廖紹華
    2021年第2期
    摘要
    引用本文
    摘 ? 要:研究了水泥用量、絮凝劑摻量、砂率對海水拌和珊瑚砂水下不分散混凝土性能的影響。結果表明:珊瑚砂水下不分散混凝土單位用水量為235~283 kg/m3時,砂率對單位用水量的影響最為顯著,用水量隨砂率增加而增大;水泥用量為400~490 kg/m3時,28 d抗壓強度在26~39 MPa之間,可配制C20~C30水下不分散混凝土;水泥用量對抗壓強度的影響最為顯著,強度隨水泥用量的增加而增大;水陸強度比隨水泥和絮凝劑摻量增加而增大。 Abstract: The effects of cement dosage, anti-washout admixture dosage and sand rate on the performance of underwater sand-dispersed concrete with coral sand were studied. The results show when the water consumption of the anti-washout concrete is between 235~283 kg/m3, the sand rate has the most significant effect on the unit water consumption. With the water consumption increasing, the sand rate increases significantly. When the cement dosage is 400~490 kg/m3, the 28 d compressive strength of underwater concrete is between 26~39 MPa, and C20~C30 anti-washout concrete can be prepared. The amount of cement is the most significant in compressive strength, and the strength increases with increasing amount of cement. At the same time, the underwater/in-air strength ratio increases as the amount of cement and anti-washout admixture increases.
    廖紹華.珊瑚砂水下不分散混凝土性能試驗研究[J].混凝土與水泥制品,2021(2):27-31. LIAO S H.Experimental Study on Anti-washout Underwater Concrete with Coral Sand [J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):27-31.
    絮凝劑對水泥砂漿強度的影響
    絮凝劑對水泥砂漿強度的影響
    • 榮 輝1,張樹青1,張 磊1,張 穎1,2,徐 蕊1,楊 永1,劉漢橋1
    2020年第2期
    摘要
    引用本文
    摘 ? 要:研究了纖維素絮凝劑、多聚糖絮凝劑在單摻和復摻情況下對水泥砂漿抗壓強度的影響,并采用X-射線衍射(XRD)、傅立葉紅外光譜分析(FTIR)、掃描電鏡(SEM)對試樣進行了微觀分析。結果表明:兩種絮凝劑單摻會降低砂漿的早期強度,但能夠提升后期的抗壓強度,而兩種絮凝劑復摻會降低早期和后期的抗壓強度。 Abstract: The influence of cellulose flocculant and polysaccharide flocculant on the compressive strength of cement mortar under single and compound mixing conditions was studied. X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), and scanning electron microscope (SEM) were used for microscopic analysis of the samples. The results show that the two of single-doped flocculants can reduce the early strength of the mortar, but improve the compressive strength in the later stage. Both of the early and late compressive strength are reduced when the two flocculants are mixed.
    榮輝,張樹青,張磊,等.絮凝劑對水泥砂漿強度的影響[J].混凝土與水泥制品,2021(2):32-36. RONG H,ZHANG S Q,ZHANG L,et al.Effect of Flocculant on Strength of Cement Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):32-36.
    內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探
    內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探
    • 呂根喜1,高 武2,毛海明3,江曉華3,章擁軍3
    2021年第2期
    摘要
    引用本文
    摘 ? 要:基于工程實際要求,對內襯高密度聚乙烯(HDPE)片材化學物理性能及內襯HDPE片材鋼筋混凝土管節進行了試驗研究,包括內襯HDPE單鍵和多鍵的抗拉拔試驗、管節接頭抗內水壓和外水壓試驗、HDPE片材覆貼接頭抗外水壓試驗、外壓荷載試驗, 可為HDPE片材在鋼筋混凝土排水管中的應用和推廣提供參考。 Abstract: Based on the actual requirements of project, ?the chemical and physical properties tests of HDPE sheets and pipe section tests of large diameter HDPE lining reinforced concrete sewer pipes are carried out, including single and multiple bond pull-out tests of HDPE lining, internal and external water pressure tests of pipe joints, external water pressure test of concrete sewer pipe joint with HDPE sheet, interface and external pressure load tests, which can provide a reference for the application and promotion of HDPE sheet in the corrosion resistance of reinforced concrete sewer pipe.
    呂根喜,高武,毛海明,等.內襯HDPE片材大口徑鋼筋混凝土排水管檢測試驗初探[J].混凝土與水泥制品,2021(2):37-43. LYU G?X,GAO W,MAO H?M,et?al.Tests of Large Diameter HDPE Lining Reinforced Concrete Sewer Pipes[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):37-43.
    PHC管樁抱箍式機械連接軸拉承載性能數值分析
    PHC管樁抱箍式機械連接軸拉承載性能數值分析
    • 安增軍1,2,賀武斌3,劉佳龍4,戴 亞1,2
    2021年第2期
    摘要
    引用本文
    摘 ?要:基于ABAQUS有限元軟件,模擬分析了PHC管樁抱箍式機械連接軸拉承載性能。結果表明:抱箍式機械連接的零部件均可滿足PHC管樁樁身軸拉設計值要求;抱箍式機械連接軸拉力傳力路線不直接,位移變形相對大;零部件應力分布相對不均勻,六角高強螺釘與U型抱箍卡之間存在先后屈服的現象。建議將U型抱箍卡上的六角高強螺釘孔設置為橢圓孔,預留一定的滑動空間,避免螺釘發生材料屈服現象。 Abstract: Based on ABAQUS, the axial tension bearing capacity of hoop type mechanical connection of PHC pile is analyzed by finite element method. The results show that the mechanical parts of hoop type connection joint can meet the bearing requirements of PHC piles axial tension design value; the tension transmission route of hoop type mechanical connection shaft is not direct, and the displacement deformation is relatively large; the stress distribution of parts is relatively uneven, and there is the phenomenon of yielding successively between hexagon high strength screw and U-shaped hoop clamp. It is suggested that the hexagon high-strength screw hole on the U-type hoop should be set as an ellipse hole, and a certain sliding space should be reserved to avoid the material yield phenomenon of the screw.
    安增軍,賀武斌,劉佳龍,等.PHC管樁抱箍式機械連接軸拉承載性能數值分析[J].混凝土與水泥制品,2021(2):44-48. AN Z J,HE W B,LIU J L,et al.Numerical Analysis of Axial Tension Bearing Capacity of Hoop Type Mechanical Connection of PHC Piles[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):44-48.
    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>