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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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    第十一期

    陶瓷再生混合砂砂漿抗折性能正交試驗研究
    陶瓷再生混合砂砂漿抗折性能正交試驗研究
    • 劉鳳利1,劉俊華2,張承志1
    2012年第11期
    摘要
    引用本文
    摘 要:基于正交試驗,以陶瓷再生粗砂、特細砂、普通水泥和粉煤灰制備再生砂漿,研究了陶瓷再生粗砂取代率、水膠比和粉煤灰取代率對砂漿抗折強度的影響,通過極差和方差分析得出了各因素的影響主次順序和優選方案,并進行了機理分析。 Abstract: The recycled mortar is prepared from recycled ceramic coarse sand, super-fine sand, ordinary Portland cement and fly ash. Based on the orthogonal experiment, the effects of the recycled aggregate replacement ratio, the water-binder ratio and the fly ash replacement ratio on the flexural strength of the mortar are investigated. The sequences of factors and the optimum design are obtained by means of range analysis and variance analysis, and the mechanism is analyzed.
    廢棄玻璃粉在超高性能水泥基材料中的應用研究
    廢棄玻璃粉在超高性能水泥基材料中的應用研究
    • 劉數華1,2,徐志惠2,孫永波3,劉顯軍4,張 潔5
    2012年第11期
    摘要
    引用本文
    摘 要:通過試驗分析了水膠比、玻璃粉、養護條件對超高性能水泥基材料抗壓強度的影響,并采用掃描電鏡(SEM)來探究玻璃粉對硬化漿體微觀形貌及水化產物影響的微觀機理。試驗結果表明,超高性能水泥基材料的強度隨水膠比的減小而增大;玻璃粉摻入超高性能水泥基材料中,不僅具有填充作用,還能發生火山灰反應,進而改善超高性能水泥基材料的微結構,提高其性能;高溫蒸養可顯著提高超高性能水泥基材料的強度。 Abstract: The effects of water-binder ratio, glass powder and curing condition on the compressive strength of ultra-high performance cement-based materials are studied by a lot of tests, and its microscopic mechanism of effects of glass powder on the micro-morphology of hardened paste and hydration products is investigated by using scanning electron microscopy (SEM). The testing results show that the strength of ultra-high performance cement-based material increases with the decrease of water-binder ratio. The glass powder has filling effect and pozzolanic effect which can be used as admixtures, and it can improve microstructure and properties of ultra-high performance cement-based materials. And the high temperature steam curing can obviously improve its strength.
    混凝土標準養護室的設計與施工
    混凝土標準養護室的設計與施工
    • 李俊成1,李祖輝1, 彭亦博1,田 寅2
    2012年第11期
    摘要
    引用本文
    摘 要:闡述了混凝土標準養護室溫、濕度控制性能的重要性,分析了一般養護室中存在的普遍問題,并以某檢測單位用標準養護室的設計和施工為例,介紹了標準養護室的設計和施工要點。 Abstract: The importance of temperature and humidity control of standard curing room is introduced. The common problems of normal curing room are analyzed. Taking the design and construction of standard curing room in one inspection company as an example, the key points of the design and construction of standard curing room are introduced.
    纖維水泥板新型高產接坯機的設計與更新
    纖維水泥板新型高產接坯機的設計與更新
    • 李宏魁
    2012年第11期
    摘要
    引用本文
    摘 要:介紹了纖維水泥板新型高產專用接坯機的結構設計、切割方式以及增加產量的措施和在電氣設計方面的改進。 Abstract: The structure form and cutting mode of a new connection billet machine with high yield for fiber cement board, relative measures on increasing yield and electrical design improvement of the machine are introduced.
    回字形框架結構在溫度變化及混凝土收縮下的應變分析
    回字形框架結構在溫度變化及混凝土收縮下的應變分析
    • 張建波1,劉付華2
    2012年第11期
    摘要
    引用本文
    摘 要:采用繼效流動理論分析了洪澤文化中心框架結構在溫度變化及混凝土收縮情況下的徐變。通過實驗結果及理論結果對比,發現以繼效流動理論為基礎計算回字形框架結構的應變是一種可行的方法,計算結果與實驗結果相近。 Abstract: The creeping of Hongze culture center frame structure under temperature change and concrete shrinkage is analyzed by using the elastic continuation and plastic flow theory. The experimental results and theoretical results show that the elastic continuation and plastic flow theory is feasible to calculate the strain of rectangular-ambulatory-plane frame structure, and the calculation results are similar to the experimental results.
    約束狀態下橡膠混凝土板內部應力發展研究
    約束狀態下橡膠混凝土板內部應力發展研究
    • 何兆芳1,尹萬云1,金仁才1,張亞梅2,馬海峰2
    2012年第11期
    摘要
    引用本文
    摘 要:設計了一種測量約束狀態下混凝土收縮應力的新方法,該方法可以定量計算出混凝土內部產生的收縮應力;對比研究了約束狀態下橡膠混凝土板與普通混凝土板早期的內部應力變化。結果表明:雖然橡膠混凝土的自由干燥收縮值比普通混凝土大得多,但無論在室內環境還是室外環境,橡膠混凝土板的收縮應力均低于普通混凝土板,這是由于橡膠混凝土的彈性模量較低,有利于緩解混凝土內部的應力集中。 Abstract: A new method to measure the shrinkage stress of concrete under restrained condition is designed, by which the shrinkage stress developed inside concrete can be calculated quantitatively. The current investigation aims to compare the internal stress evolution of restrained rubber concrete slab and ordinary concrete slab at early ages. The results show that the internal shrinkage stress developed in restrained rubber concrete slab is lower than that in ordinary concrete slab, whether in the indoor environment or outdoor environment, although the free dry shrinkage of the former is higher than that of the latter, which is due to the lower elastic modulus of rubber concrete helping abate the internal stress concentration of concrete.
    預應力筋布置形式對UPC梁受彎性能的影響研究
    預應力筋布置形式對UPC梁受彎性能的影響研究
    • 趙少偉,武龍飛,李昕桐,郭 蓉
    2012年第11期
    摘要
    引用本文
    摘 要:為了明確預應力筋的布置形式對UPC梁受彎性能的影響,設計了6片UPC梁,通過靜載試驗對比分析了兩種不同預應力筋布置形式下UPC梁的受彎性能。研究表明,預應力筋的布置形式對UPC梁的極限承載力、極限應力增量、撓度和裂縫開展及分布均有影響;HRB500級高強鋼筋作為非預應力筋可提高UPC梁的極限承載力和極限應力增量。 Abstract: In order to figure out the effect of the layout of the prestressed steels on the bending property of UPC beams, six UPC beams are designed, and the effects of two different layouts of the prestressed steels on the bending property of UPC beams are compared and analyzed by the static load test. The test results show that the layout of the prestressed steels can impact the ultimate bearing capacity, ultimate stress increment, deflection and cracks of UPC beams. As non-prestressed steels, the HRB500 steels can improve the ultimate bearing capacity and ultimate stress increment of UPC beams.
    考慮滑移效應的壓型鋼板-混凝土組合樓板剛度研究
    考慮滑移效應的壓型鋼板-混凝土組合樓板剛度研究
    • 翁曉紅1,錢善青2,白明杰1
    2012年第11期
    摘要
    引用本文
    摘 要:以彈性理論為基礎,推導了均布荷載作用下壓型鋼板-混凝土組合樓板的撓曲微分方程,分析得到了考慮滑移影響的壓型鋼板-混凝土組合樓板撓度計算公式,提出了考慮滑移效應影響的壓型鋼板-混凝土組合樓板的剛度折減系數,分析了各設計參數對剛度折減系數的影響規律,并進行了18塊足尺寸壓型鋼板-混凝土組合樓板的試驗驗證工作。分析結果表明,撓度的理論計算值與試驗實測值之比的平均值為0.97,變異系數為0.14,兩者吻合較好。 Abstract: The flexure differential equation of composite slabs with profiled steel sheeting under uniformly distributed load is deduced, and the deflection formula considering slip effect is obtained based on the elastic theory. The reduction coefficient of rigidity is proposed and the influence law of the design parameters on the reduction coefficient of rigidity is analyzed. Finally, the experimental verification of 18 composite slabs with profiled steel sheeting is conducted. The results show that the calculation value is consistent with the theoretical value of deflection, the average value of the ratios is 0.97, and the variation coefficient is 0.14.
    深井軟巖巷道聚丙烯纖維混凝土鋼筋網殼復合襯砌研究及工程應用
    深井軟巖巷道聚丙烯纖維混凝土鋼筋網殼復合襯砌研究及工程應用
    • 劉光程1,韓曉靜2,王凌燕2,林 杰3
    2012年第11期
    摘要
    引用本文
    摘 要:根據空間殼體力學原理,通過模型試驗研究了聚丙烯纖維混凝土鋼筋網殼的力學性能及復合襯砌的變形、破壞形態與發展規律。該支護體系的應用,實現了三維鋼筋支架與混凝土力學特性在深井破碎性軟巖巷道支護中的復雜應力的轉化效應,從而達到對深部巷道圍巖穩定的控制目標,能有效地支護高地壓大變形巷道、跨采動壓巷道、沖擊地壓巷道以及大斷面硐室等。 Abstract: According to the principles of mechanics of three-dimensional shell, through the model test, the mechanical properties of reinforced net shell of polypropylene fiber reinforced concrete and the deformation of the composite lining, the destruction morphology and the regularity of its development are studied. The application of the support system can achieve the transformation effect of the complex stress between a bracket of three-dimensional reinforced concrete and the mechanical properties in the deep well broken soft rock roadway support, so as to achieve the control objective of the stability of the deep roadway surrounding rock. And it can effectively support the high ground pressure large deformation roadway, cross-mining dynamic pressure roadway, rock burst roadway as well as the large cross section chamber.
    PVA纖維水泥基復合材料鹽凍損傷分析及壽命預測
    PVA纖維水泥基復合材料鹽凍損傷分析及壽命預測
    • 劉曙光1,王志偉1,閆長旺1,張 菊1,閆 敏2
    2012年第11期
    摘要
    引用本文
    摘 要:分析了PVA纖維水泥基復合材料在鹽凍環境下的損傷原理及特性,以快速鹽凍試驗下實測數據為基礎,驗證了基于損傷原理提出的混凝土凍融拋物損傷模型,并基于拋物模型對鹽凍環境下PVA纖維水泥基復合材料進行了壽命預測。 Abstract: The damage principles and characteristics of the polyvinyl alcohol (PVA) fiber cementitious composite material under salt frozen environment are analyzed. Based on measured data of frozen test, the concrete freezing-thaw parabola damage model is verified by damage principles. Furthermore, it makes the life prediction aimed at the PVA fiber cementitious composite material under salt frozen environment based on the parabola model.
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