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    蘇州混凝土水泥制品研究院有限公司

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    第八期

    摻鋰渣再生粗骨料混凝土抗壓強度試驗研究
    摻鋰渣再生粗骨料混凝土抗壓強度試驗研究
    • 于 江,嚴文龍,秦擁軍,羅 玲
    2015年第8期
    摘要
    引用本文
    摘 要:鋰渣及再生粗骨料對混凝土抗壓強度有一定的影響,通過軸心抗壓試驗獲得了立方體與棱柱體抗壓強度之間的線性關系。結果表明,適量的再生粗骨料和鋰渣可以有效提高混凝土28d抗壓強度,當再生粗骨料取代率為30%,鋰渣摻量為20%時,28d的立方體和棱柱體抗壓強度最大,較同齡期下未摻鋰渣的普通混凝土增長了39.1%和48.2%。 Abstract: Lithium slag and recycled coarse aggregates have a certain influence on the compressive strength of concrete, through the axial compressive test, the linear relationship of compressive strength between the cube and prism were obtained. The results show that the right amount of recycled coarse aggregate and lithium slag can effectively improve the 28d compressive strength. When the replacement rate of recycled coarse aggregate is 30% and the lithium slag content is 20%, the 28d compressive strength of cube and prism is the largest, is increased by 39.1% and 48.2% than the compressive strength of the ordinary concrete which is not added by lithium slag in the same age period.
    建筑垃圾再生微粉的研究現狀
    建筑垃圾再生微粉的研究現狀
    • 毛新奇1,2,屈文俊1,朱 鵬1
    2015年第8期
    摘要
    引用本文
    摘 要:建筑垃圾再生微粉各項性能的研究是推進建筑垃圾資源化的重要基礎。根據近年來國內關于再生微粉的主要研究成果,對材料來源、制備工藝、工作性能、力學性能和耐久性能等方面進行了綜述,并對相關的影響因素進行了探討分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed
    冬季機場道面混凝土施工強度影響因素分析研究
    冬季機場道面混凝土施工強度影響因素分析研究
    • 岑國平1,秦湘輝1,李 強2,李 明2,龍小勇1,劉慶濤1,劉照煒3
    2015年第8期
    摘要
    引用本文
    摘 要:結合實際工程,模擬道面混凝土散熱特點,研究了不同防凍劑摻量、保溫措施、入模溫度、環境溫度對混凝土強度的影響規律。研究結果表明,隨著環境溫度的降低,混凝土強度降低,亞硝酸鈉摻量低于2%不影響混凝土強度,超過4%則對混凝土強度造成一定損失。采用塑料海綿配合電熱毯對試件進行保溫加熱、提高入模溫度可以有效地提高混凝土強度。多元回歸分析結果表明,保溫措施對強度的影響最大。 Abstract: Combination with actual engineering, the effecting rules of different antifreeze agent dosage, heat preservation measures, molding temperature, environment temperature on concrete strength are investigated through simulating the heat dissipation characteristics of pavement concrete. The results show that the concrete strength reduces with the decreasing of temperature, sodium nitrite content less than 2% will not affect the strength of concrete, while sodium nitrite dosage more than 4% will cause a certain loss of concrete strength. The concrete strength can be enhanced by adopting plastic sponge and electric blanket for heat preservation or increasing molding temperature. The result of multiple regression analysis indicate that heat preservation measures is the biggest influence on strength.
    管樁與塑料排水板處理軟土地基試驗研究
    管樁與塑料排水板處理軟土地基試驗研究
    • 夏晉華
    2015年第8期
    摘要
    引用本文
    摘 要:為了消除管樁施工過程中超靜孔隙水壓對地基土層產生的不利影響,依托PHC管樁與塑料排水板處理某公路軟土地基工程項目,進行了管樁擠土效應試驗研究。在施工現場布置排水板間距分別為1.2m與2.4m的兩個試驗區,通過對管樁施工過程中孔隙水壓力、土體側向位移和地表沉降與隆起的對比測試,得到了不同排水板間距對抵消管樁擠土效應的效果。 Abstract: In order to eliminate the adverse effects of super pore pressure on the foundation soil in tubular pile construction process, the experiment research on squeezing effects of pipe pile is studied by PHC pipe pile and plastic drainage plate treatment in highway soft soil ground engineering project. Two test areas are arranged in construction site layout with 1.2meter drainage plate spacing and 2.4meter drainage plate spacing. Through the contrast tests on the pore water pressure, lateral displacement of soil and surface subsidence and uplift during pipe pile construction, influence of different drainage plate spacing on offsetting squeezing effects of pipe pile is carried out.
    裝配式密肋復合墻板吊裝與施工驗算
    裝配式密肋復合墻板吊裝與施工驗算
    • 劉 磊,陳國新,蘇 枋
    2015年第8期
    摘要
    引用本文
    摘 要:結合相關施工規范要求和復合墻板的構造特點,對墻板吊裝方式、吊裝施工進行研究,并通過工程算例校核復合墻板吊裝的安全性。結果表明,密肋復合墻板、女兒墻、疊合板在脫模起吊、運輸起吊時宜采用四點平吊,安裝起吊時宜采用兩點直吊;吊點宜對稱布置在肋梁與肋柱交匯處。 Abstract: Combination with related construction specifications and structure features of composite wall, the wallboard lifting method, checking computation of lifting construction are studied and the safety of the composite wallboard hoisting for engineering calculation is passed. The results show that multi-ribbed composite wall, parapet and laminated board are used a four-point level lifting in stripping lifting and transportation lifting, while the multi-ribbed composite wall, parapet and laminated board are used two straight in installing lifting cranes; lifting points should be arranged symmetrically in the ribs and rib beams column interchange.
    GB 50838—2015《城市綜合管廊工程技術規范》修訂說明
    GB 50838—2015《城市綜合管廊工程技術規范》修訂說明
    • 王恒棟
    2015年第8期
    摘要
    引用本文
    摘 要: 介紹了GB 50838—2015《城市綜合管廊工程技術規范》修訂情況,按照國家產業政策導向的要求,強調了預制拼裝綜合管廊的工程示范意義。 Abstract: The revision note for national standard GB 50838—2015 Technical code for urban utility tunnel engineering is systematically introduced. And in accordance with the requirements of the national construction industry policy oriented, precast utility tunnel is emphasized in engineering demonstration application.
    花崗巖環保型透水磚的研制
    花崗巖環保型透水磚的研制
    • 陳連發1,陳 悅2,李 龍3,陸 洋4
    2015年第8期
    摘要
    引用本文
    摘 要:利用正交試驗分析了制備透水磚過程中花崗巖骨料粒徑、集灰比、水灰比、生石灰摻量等因素的影響并對其重要性進行排序。研究了各因素與抗壓強度、抗折強度、透水系數和孔隙率的關系。討論了靜壓成型壓力和振動成型時間對孔隙率和透水系數的影響。根據混合材料最優配比參數,完成了制作透水磚的最佳配合比設計方案。試驗證明:經加工處理后的花崗巖石材邊角廢料是制備環保型透水磚的有益材料。 Abstract: The effects of granite aggregate size, aggregate cement ratio, water cement ratio, lime dosage, etc. on performance of water permeable brick were analyzed by using orthogonal test and the importance of these factors were ranked. The relationships of orthogonal factors and the performance such as compressive strength, flexural strength, permeability coefficient and porosity were researched. The influence of static molding pressure and vibration molding time on the porosity and the permeability coefficient was discussed. The best mix design for making permeable brick was completed according to the optimal ratio of mixtures. The test results prove that: the leftover waste material granite after processing is a good material for preparing environmental permeable brick.
    自保溫砌塊的熱工測試與模擬
    自保溫砌塊的熱工測試與模擬
    • 李 萍,孫道勝,丁 益,王愛國
    2015年第8期
    摘要
    引用本文
    摘 要:自保溫砌塊是發展新型保溫建筑材料的必然,對國內墻體材料的革新和節能技術的發展具有促進作用。本文所設計的自保溫砌塊,利用已處理的煤矸石進行制備,并使用熱流計法對煤矸石保溫砌塊進行熱工性能測試,測試結果表明:所設計240塊型滿足項目對傳熱系數的要求,同時利用軟件模擬了砌塊在真實使用環境條件下的溫度場,砌塊在使用時熱應力集中區向圍護結構的熱環境偏移,這對建筑節能材料的設計、施工和檢測具有指導意義。 Abstract: Self-thermal insulation block is necessary to develop a new type of thermal insulation building material, which promotes the innovation for domestic wall materials and energy saving technology. The self-thermal insulation block is prepared by handled coal gangue. The thermal performance of self-thermal insulation block with coal gangue is studied by using heat flow mater, the test shows that type 240# can meet the requirements of the heat transfer coefficient for project. Temperature field of self-thermal insulation brick is simulated under real environmental conditions by software, it can be seen concentration area of thermal stress shifts to hot environment of building envelope, which is a guiding significance for the design, construction and detection of building energy-saving materials.
    膜化劑對建筑垃圾再生砂漿的性能影響試驗研究
    膜化劑對建筑垃圾再生砂漿的性能影響試驗研究
    • 楊子勝1,張 瑾2,王愛勤1
    2015年第8期
    摘要
    引用本文
    摘 要:本試驗將等質量板垃圾和柱垃圾破碎、篩分后制成再生砂,利用二水石膏、膠粉、纖維素醚等原料制備膜化劑并對建筑垃圾再生砂進行膜化處理,制備了CL和CLT兩種試塊,通過正交試驗和方差分析研究了二水石膏、膠粉、纖維素醚對不同試塊性能的影響。試驗結果表明,抗壓強度效果最好的膜化配比分別為4%石膏、2%膠粉、0.6%纖維素醚和4%石膏、3%膠粉、0.2%纖維素醚;抗折強度效果最好的膜化配比均為4%石膏、1%膠粉和0.2%纖維素醚,三種因素對吸水率影響都不大,但CLT試塊的吸水率都小于CL試塊。 Abstract: The construction waste reclaimed sand is produced by the same quality of plate waste and column waste which are crushed and screened. The membrane agent is prepared by mixing dihydrate gypsum, powder, cellulose ethers and other raw materials, and membrane treatment of construction waste reclaimed sand is carried out, which is produced for cement mortar of CL and CLT. The influence of dihydrate gypsum, powder, cellulose ethers on performance of different blocks is studied by the method of orthogonal level analysis and variance analysis. The results show that the best membrane of the compressive strength ratio is 4% gypsum, 2% powder, 0.6% cellulose and 4% gypsum, 3% powder, 0.2% cellulose respectively. The best membrane of the flexural strength ratio is 4% gypsum, 1% powder and 0.2% cellulose ethers. Three factors have little effects on its absorption. However, the absorption rate of CLT block is less than the CL block.
    BFRP與CFRP加固剪力墻抗震性能比較分析
    BFRP與CFRP加固剪力墻抗震性能比較分析
    • 封卉梅1,趙 軍2
    2015年第8期
    摘要
    引用本文
    摘 要:進行了6片碳纖維片材和玄武巖纖維片材加固鋼筋混凝土墻在低周反復荷載下的試驗研究,并基于試驗結果,對這兩種類型纖維片材加固鋼筋混凝土剪力墻的加固效果進行了對比分析。結果表明,玄武巖纖維片材加固剪力墻在延性及耗能能力方面表現出來的抗震性能可與碳纖維片材加固的效果媲美,有些方面甚至超過碳纖維片材加固的效果,而玄武巖纖維的價格比碳纖維的價格低廉許多,具有更好的經濟性。 Abstract:Experimental study on 6 sheet carbon fiber sheet and basalt sheet reinforced concrete wall under low cyclic loading is carried out. Based on the test results, analysis on the two types of reinforcement effect with fiber sheet strengthening reinforced concrete shear wall is compared. The results show that, seismic performance of basalt fiber sheet reinforced shear wall is comparable to reinforcement effect of carbon fiber in some respects of ductility and energy dissipation capacity, that is better than carbon fiber reinforcement in some respects, and basalt fiber prices is cheaper than carbon fiber which has better economy.
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