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    蘇州混凝土水泥制品研究院有限公司

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    第十期

    摻建筑垃圾再生微粉混凝土性能試驗研究
    摻建筑垃圾再生微粉混凝土性能試驗研究
    • 馬 郁
    2016年第10期
    摘要
    引用本文
    摘 要:研究了利用建筑垃圾再生微粉作礦物摻合料所配制的混凝土的各項性能。研究結果表明,建筑垃圾再生砂粉有一定的活性,其各項性能指標滿足Ⅱ級粉煤灰要求,可作為混凝土礦物摻合料使用。利用建筑垃圾再生微粉配制的C30、C50混凝土,摻量在20%以下時,對混凝土各項性能影響不大,配制出的再生混凝土工作性能和耐久性能與基準混凝土相當。 Abstract: The properties of the concrete made from the construction waste recycled powder were studied. The results showed that, the construction waste recycled powder has certain activity, all its performance meet the requirements of grade II fly ash, it can be used as mineral admixtures. When the dosage is below 20%, the performance of the C20, C50 concrete that made from the construction waste recycled powder have no change and its durability is almost the same as the reference concrete.
    鐵尾礦植生基質的無側限抗壓強度試驗研究
    鐵尾礦植生基質的無側限抗壓強度試驗研究
    • 魯明星1,李富平2
    2016年第10期
    摘要
    引用本文
    摘 要:為有效利用堆積的鐵尾礦,以鐵尾礦、水泥、秸稈、pH值調節劑等配制植生基質噴播到裸露的巖質邊坡。研究了水泥摻量、pH值調節劑劑量為影響因素配制的植生基質的無側限抗壓強度隨著齡期的變化規律。通過對試驗數據的分析可知,當水泥摻量為6%時,植生基質的強度可以滿足工程要求;無側限抗壓強度隨pH值調節劑劑量的增加而降低;植生基質加入6%的pH值調節劑和8%的水泥時,14d齡期時的抗壓強度迅速增加。 Abstract: In order to make full use of the packed iron tailings, iron tailings, cement, straw and pH regulator were used to prepare planting material sprayed on the slope of the exposed rock. Based on the influencing factors of the cement content and pH regulator dosage, this research aims to study the change law of the unconfined compressive strength with the change of its age. The results showed that, when the cement content is 6%, the strength of planting material can meet the engineering requirement. With the pH regulator dosage increases, the unconfined compressive strength reduces. When 6% and 8% of pH regulator dosage and cement added into the planting material respectively, the unconfined compressive strength increases quickly in 14d.
    水泥復合改性淤泥基材料的性能研究
    水泥復合改性淤泥基材料的性能研究
    • 劉志華1,馬軍濤2,楊久俊1,張 磊1
    2016年第10期
    摘要
    引用本文
    摘 要:使用水泥、石灰、礦粉等摻合料對黃河淤泥進行復合改性,測試了不同改性劑、水灰比和成型方式對淤泥試件抗壓強度的影響,使用XRD衍射分析研究改性前后物相的變化,使用SEM掃描電鏡觀察改性前后形貌的變化。結果表明,使用水泥作為改性劑可顯著改善淤泥試件的強度,加壓成型的淤泥試塊強度可達到澆筑成型試件的五倍以上。 Abstract: Compound modification by adding cement, lime, slag and other admixture into Yellow River silt, the influence of different modification agent, water cement ratio and forming method on the compressive strength of the silt specimen was analyzed. Using XRD and SEM to study the change of phase and morphology before and after compound modification. The results showed that, using cement as the modification agent can significantly improve the strength of the silt specimen, the silt specimen strength compression formed can reach more than five times of the pouring formed.
    C45基礎大體積混凝土施工質量控制研究
    C45基礎大體積混凝土施工質量控制研究
    • 呂俊杰1,崔慶怡2
    2016年第10期
    摘要
    引用本文
    摘 要:結合實際工程,對超高層建筑底板施工過程中粗鋼筋定位、電梯基坑處理、大體積混凝土澆筑、底板頂面施工方法等進行了敘述。施工過程中采用電子測溫儀及計算機網絡監控技術,對大體積混凝土溫度變化及后期養護進行了實時監控,取得了滿意的效果。 Abstract: Based on a real project, the thick steel bar positioning, the elevator foundation pit treatment, the mass concrete pouring, the top floor construction of the floor construction process of super high rise building are summarized. Electronic temperature measuring instrument and computer network monitoring technology are used in the construction process, the temperature change of mass concrete and the maintenance of the later period are monitored in real time, and the result is good.
    橋梁箱梁支架地基變形性狀試驗研究
    橋梁箱梁支架地基變形性狀試驗研究
    • 朱 翔1,2,郭院成1,侯思強1
    2016年第10期
    摘要
    引用本文
    摘 要:依據鄭東新區高支模架現場試驗結果,對地基土土壓力及變形進行了監測,結合數值模擬及分層總和法理論計算結果對比高支模架不同位置的土壓力與地基土變形,分析三者之間的數值差異,并對差異原因進行了分析,提出了在實際工程中應考慮應力集中保證一定的安全系數的觀點,為高支模板及后續現澆結構設計施工提供了實測依據。 Abstract: Based on the field test results of high scaffolding in Zhengdong New Area, foundation pressure and deformation were monitored. Combined with the results of numerical simulation and layerwise summation method, the results of high scaffolding for different positions of earth pressure and soil deformation were compared, numerical difference and cause of the three were analyzed. The results showed that, considering the stress concentration and using safety factor in the practical construction work can provide experimental basis for high scaffolding and subsequent cast-in-situ concrete structure design and construction.
    拉伸黏結強度試驗用切割裝置及試驗方法的改進
    拉伸黏結強度試驗用切割裝置及試驗方法的改進
    • 馮長偉,蘇晉鵬,顧建平,金志華
    2016年第10期
    摘要
    引用本文
    摘 要:發明了一種新型的拉伸黏結強度試驗專用切割裝置,對傳統的切割方式和拉伸黏結強度試驗方法進行了改進。結果表明,新切割裝置相對傳統切割工具更具效率和精度,切割精度可控在0.5mm。新切割裝置和試驗方法更具實用性,可對保溫裝飾板、復合板以及真空絕熱板抹面層等復雜系統進行切割試驗,效果較好;該裝置和方法可應用在保溫層與基層、保溫層與抹灰層(裝飾板) 以及抹灰層與基層的拉伸黏結強度試驗中。使用新切割裝置能保持切割樣品的一致性和均勻性,保溫層(或抹灰層)的內部結構不會因為切割而損壞,?覫50mm的粘貼鐵塊不易出現翹邊和不平整等現象,這些優點使得后續的拉伸黏結強度試驗結果更為真實可靠。 Abstract: By improving the traditional way of cutting and tensile strength test method, a new type of tensile strength of special cutting device is invented. The results show that the new cutting device is more efficiency and accuracy compared with the traditional cutting tools, and the cutting accuracy can be controlled in the 0.5mm; the new cutting device can be used to take the cut tests of complex systems such as some thermal insulation decoration board, composite board and vacuum insulation panel, and the effect is good; the new cutting device and method can be used in the tensile bond strength tests of insulation layer and the base layer, the insulating layer and the plaster layer (trim) and plastering layer and base layer. Using new cutting device can maintain consistency and uniformity of the cutting sample, the internal structure of thermal insulation layer (layer or plaster) will not be damaged, because cut of ?覫50mm paste such as iron is not easy to become warped edge and uneven phenomenon. Based on the advantages on bonding strength, the follow-up test results is more reliable.
    石膏基氯氧鎂復合改性材料的研究
    石膏基氯氧鎂復合改性材料的研究
    • 李文斌,馮啟彪,王音璇,楊雷俊
    2016年第10期
    摘要
    引用本文
    摘 要:基于石膏和氯氧鎂膠凝材料進行了復合改性研究,通過對試件硬化體微觀晶體形貌的觀測,分析了石膏-氯氧鎂系復合氣硬性膠凝材料改性的作用機理。結果表明,石膏-氯氧鎂系復合氣硬性材料在適宜的配比下可以制作凝結時間適宜、耐水性好、強度高以及干燥收縮率低的新型膠凝材料。 Abstract: Based on the compound modification research on the cementitious material of gypsum and magnesium chloride, by the observation of the microstructure of the hardened specimens, the modification mechanism of the gypsum magnesium chloride composite air hardening cementitious materials was analyzed. The results showed that, a new gel material with appropriate setting time, good water resistance, high strength and low drying shrinkage can be produced by the air hardening composites when a proper ratio of gypsum to magnesium oxychloride is prepared.
    礦物摻合料復摻對墻板膠黏劑拉伸黏結性能影響研究
    礦物摻合料復摻對墻板膠黏劑拉伸黏結性能影響研究
    • 甄海鋒,郭文瑛,莫庭威,吳晨浩,左金懿,王 宣,劉金聚
    2016年第10期
    摘要
    引用本文
    摘 要:隨著建筑工業化的發展,預制混凝土墻板的使用越來越廣泛。墻板膠黏劑用于預制混凝土墻板的拼接和黏結,當墻板膠黏劑拉伸強度較小時,容易產生裂縫等問題。為改善膠黏劑拉伸強度,本文在原有的研究基礎上研究了滑石粉、礦粉、偏高嶺土三種礦物摻合料復摻對墻板膠黏劑拉伸黏結強度的影響。正交試驗結果表明,滑石粉和礦粉可以有效改善膠黏劑的拉伸黏結強度。偏高嶺土摻量過大會影響其拉伸強度。由優化試驗可知礦粉和滑石粉復摻最佳摻量分別為20%和30%。 Abstract: With the development of construction industrialization, precast concrete panels are applied more and more widely. Panel adhesive is used for assemblage and binding the precast concrete panels. When its tensile strength is not high enough, it will cause problems like cracking. In order to improve its tensile strength, the influence of mixing talc powder, slag powder and metakaolin on the tensile bond strength of panel adhesive were studied based on previous research. The orthogonal experiment results showed that, adding talc powder and slag powder could improve the tensile bond strength effectively, but the large amount of metakaolin could decrease the tensile strength. The optimizing experiment results showed that the optimal mix ratio of talc powder and slag powder was 30% and 20% respectively.
    鋼結構樓板泵送輕骨料混凝土優化配比研究
    鋼結構樓板泵送輕骨料混凝土優化配比研究
    • 焦立穎
    2016年第10期
    摘要
    引用本文
    摘 要:對中高層鋼結構建筑樓頂板所需要的泵送輕骨料混凝土進行了優化配比研究,對已有輕骨料混凝土配比在運用過程中的特點及不足進行了分析。從優選原材料入手,對本工程混凝土配合比進行了設計及優化,得到了低密度泵送輕骨料混凝土。試驗結果表明,此配比下的輕骨料混凝土力學性能、體積穩定性等均滿足規范和工程要求。研究成果為同類建筑結構、大跨徑橋梁建設的泵送輕骨料混凝土及要求減輕結構自重的工程提供了參考。 Abstract: The mix ratio of pumping light weight aggregate concrete needed for middle and high rise steel structure building roof board is studied. The characteristics and deficiencies of the existing light weight aggregate concrete in the application process are analyzed, according to the optimization of raw materials, the design and optimization of concrete mix ratio of this project was carried out, finally the low density pumping light weight aggregate concrete was prepared. The results show that the mechanical properties and the volume stability of lightweight aggregate concrete under this ratio meet the requirements of the specification and the engineering need. The research results provide an important choice for the construction of similar structures and large span bridges, the pumping light aggregate concrete and the requirement of reducing the weight of the structure.
    鋼纖維噴射混凝土襯砌結構模型試驗及數值模擬研究
    鋼纖維噴射混凝土襯砌結構模型試驗及數值模擬研究
    • 王再舉1,周祥瑞1,姚直書2
    2016年第10期
    摘要
    引用本文
    摘 要:為了研究噴射鋼纖維混凝土的力學性能,設計并完成三組噴射混凝土襯砌加載模型試驗。研究表明,噴射鋼纖維混凝土具有良好的抗裂性和韌性,在裂縫出現時,仍能承受荷載;在混凝土中適當增加鋼纖維的摻量,會顯著提高混凝土的斷裂性能。利用ANSYS有限元軟件模擬噴射鋼纖維混凝土襯砌試件在某組試驗破壞荷載作用下的受力情況顯示:當直墻部位荷載較大和拱部應力集中時,對整個襯砌結構很不利。 Abstract: In order to study the mechanical properties of the steel fiber reinforced sprayed concrete, three groups of lining loading model test were designed and accomplished. The results showed that, steel fiber reinforced sprayed concrete has good crack resistance and toughness, it can still resist the load when it has cracks and an appropriate steel fiber content can increase the concrete fracture properties. The sprayed steel fiber reinforced concrete lining specimens under a certain set of test loads was simulated by the ANSYS. The results showed that, the large load straight wall portion and arch stress concentration have a great harm to the entire lining structure.
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