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    蘇州混凝土水泥制品研究院有限公司

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    第七期

    關于混凝土施工縫位置的商討
    關于混凝土施工縫位置的商討
    • 邱玉深
    2011年第7期
    摘要
    引用本文
    摘 要:混凝土澆筑宜連續不間斷進行,以避免出現削弱結構受力性能及變形特征的施工縫。傳統的施工縫位置一般留于“剪力較小且便于施工”之部位,此法存在一些缺陷和不足。針對這種情況,提出了“受力較小且便于施工”的施工縫位置留置原則。 Abstract: Pouring concrete should be carried out without intermittence, so as to prevent the construction joints which may weaken the structure bearing performances and have deformation characteristic. The traditional construction joints are usually marked on the position with “smaller shearing and convenient for construction”, however, this method has a few defects and shortcoming. Aiming at this situation, the setting principle of the construction joints position with “smaller loading and convenient for construction” is proposed
    燕尾型接頭地下連續墻施工技術
    燕尾型接頭地下連續墻施工技術
    • 饒 瑞,蘇培豐
    2011年第7期
    摘要
    引用本文
    摘 要:以廣州軌道交通沿線一座地下兩層一島一側站臺車站的地下連續墻施工為例,介紹了燕尾型接頭地下連續墻施工的技術要點,并針對施工過程中容易出現的問題提出相應的措施 Abstract:The underground diaphragm wall (UDW) with swallowtail joint has been successfully used in a subway station in Guangzhou. Key points of the construction for this project have been discussed and relevant measures have been proposed to solve the problems in the construction process.
    廢棄泡沫玻璃自保溫砌塊的正交試驗研究
    廢棄泡沫玻璃自保溫砌塊的正交試驗研究
    • 邱玉深
    2011年第7期
    摘要
    引用本文
    摘 要:通過正交試驗分析了泡沫玻璃、水泥、水和外加劑摻量對泡沫玻璃自保溫砌塊的導熱系數、抗壓強度和表觀密度的影響,驗證了泡沫玻璃等材料配置泡沫玻璃自保溫砌塊的可行性。 Abstract: Based on the orthogonal experiment, the effects of the foam glass, cement, water and additive on thermal conductivity, compressive strength and apparent density of insulating blocks with foam glass have been analyzed, and the feasibility of foam glass to prepare insulating blocks with foam glass has been verified.
    廢陶瓷再生砂對砂漿性能影響的研究
    廢陶瓷再生砂對砂漿性能影響的研究
    • 張承志1,劉鳳利1,劉俊華2
    2011年第7期
    摘要
    引用本文
    摘 要:將廢陶瓷破碎成細骨料,部分取代特細砂配成廢陶瓷再生混合砂。固定稠度和膠砂比,通過試驗,對比了陶瓷再生混合砂砂漿、天然中砂砂漿、特細砂砂漿和陶瓷再生粗砂砂漿的抗壓強度、抗折強度和干縮性能的差異。結果表明,陶瓷再生混合砂砂漿能夠達到工程應用的強度要求且后期強度較高;其相對脆性低、干縮小,有利于提高抗裂性。 Abstract : Waste ceramic is crushed as recycled ceramic coarse sand, and recycled ceramic mixed sand is made through recycled ceramic coarse sand partly replacing super-fine sand. By fixed consistence and cement-aggregate ratio, the compressive strength, flexural strength and shrinkage performance between mortar respectively made from natural medium sand, super-fine sand, recycled ceramic coarse sand and recycled ceramic mixed sand are contrasted. The results show that the mortar using recycled ceramic mixed sand as fine aggregate can achieve the project’s strength request and it has higher strength at later age. And by adding recycled ceramic coarse sand in mortar, the brittleness and shrinkage of mortar can be decreased, thus, the crack resistance of the concrete can be improved.
    地下室長側墻混凝土早期溫度場及應變場分布特性試驗研究
    地下室長側墻混凝土早期溫度場及應變場分布特性試驗研究
    • 張炳華,劉新明,王正峰,朱錦泉
    2011年第7期
    摘要
    引用本文
    摘 要:混凝土早期變形及約束引起的地下室側墻混凝土開裂現象是工程中的常見問題。通過預埋溫度與應變傳感器的方法,對實際工程中側墻混凝土早齡期的溫度與應變的變化規律進行了監測。研究結果表明,地下室側墻混凝土澆筑后,溫度的變化都有一潛伏期,此后溫度急劇上升直至達到最大溫升,之后開始降溫并趨于外界溫度。同時研究也表明,混凝土內部溫度是影響應變發生的主要原因,且混凝土內部早期應變明顯,當溫度趨于外界溫度后,側墻混凝土的應變并不發生太大變化。 Abstract: Early deformation and constraint of concrete causing the basement side wall concrete cracking phenomenon are common problems in engineering. Through the methods of embedded temperature and strain sensor, the temperature with side wall concrete early ages and strain change rules in actual engineering are monitored. The results indicate that after the basement side wall concrete casting, the change of the temperature has an incubation period, then the temperature sharply rises until reaching the maximum, after that, the temperature begins to be cooling and tends to be the outside temperature. Meanwhile, the research also shows that the internal temperature of concrete is the main reason for strain happening, and the early strain of concrete is obvious. When the temperature of side wall concrete tends to be outside temperature, the strain doesn’t occur too much change.
    寒冷地區節能65%與自保溫砌塊的研究
    寒冷地區節能65%與自保溫砌塊的研究
    • 宋巖麗
    2011年第7期
    摘要
    引用本文
    摘 要:論述了寒冷地區節能現狀和居住建筑外墻節能指標,通過對自保溫砌塊組成材料計算分析,提出自保溫砌塊墻的選材方法。結果表明,以承重兼保溫的陶?;炷量招钠鰤K內填泡沫混凝土制成的自保溫砌塊用于寒冷地區居住建筑外墻,完全能實現建筑節能65%的目標。 Abstract: The energy-saving status and the design standard of outer walls for dwelling houses which can save energy by 65% in cold regions are introduced. Through the calculation and analyses of composite material of self-thermal insulation blocks, a selecting material solution on self-thermal insulation blocks is put forward. The results show that the self-thermal insulation blocks made by ceramsite concrete hollow blocks encased in foam concrete can be used for outer walls of dwelling houses and can save energy by 65%.
    聚酯纖維和聚丙烯腈纖維瀝青混凝土水穩定性對比試驗
    聚酯纖維和聚丙烯腈纖維瀝青混凝土水穩定性對比試驗
    • 常傳立1,宋建學2
    2011年第7期
    摘要
    引用本文
    摘 要:馬歇爾殘留穩定度試驗和凍融劈裂試驗結果表明,加入纖維對瀝青混合料的水穩性有明顯改善作用,馬歇爾殘留穩定度從88%提高到92%以上。不同類型的纖維,提高程度略有不同,聚酯纖維稍遜于聚丙烯腈纖維,而聚丙烯腈纖維又弱于其與聚酯纖維混合配方。凍融循環試驗結果表明,未摻纖維的瀝青混凝土強度損失最大,聚丙烯腈纖維與聚酯纖維混合摻入的瀝青混凝土強度損失最小。 Abstract: By the Marshall residual stability experiment and freezing and thawing split test, the experimental results indicate that the water stability of asphalt admixture can be obviously improved by adding fiber, and Marshall residual stability is increased from 88% to over 92%. Different types of fiber have different improving effects on Marshall residual stability, for example, the one with polyester fiber is less than the one with polyacrylonitrile fiber, and the one with polyacrylonitrile fiber is less than the one with the mixing proportion by polyacrylonitrile fiber and polyester fiber. Freeze-thaw cycle experimental results show that the strength loss of asphalt concrete without adding fiber is the largest, and strength loss of asphalt concrete with adding polyacrylonitrile fiber and polyester fiber is the lea
     C40鋼纖維陶粒橋面混凝土的配制與應用
    C40鋼纖維陶粒橋面混凝土的配制與應用
    • 譚銳新1,李柏健1,林 勇1,李偉發2,葉燦斌2
    2011年第7期
    摘要
    引用本文
    摘 要:為改善普通橋面混凝土易出現露石、剝落、開裂、斷板等現象,配制了力學性能優良且自重較輕的鋼纖維陶粒橋面混凝土。實際應用表明,所配制的C40鋼纖維陶粒橋面混凝土各項性能優良,可滿足橋面混凝土的應用要求。 Abstract: To improve the phenomena such as exposing, spalling, cracking, broken slab and so on of common deck concrete, the steel fiber ceramisite deck concrete with good mechanical property and light weight is prepared. Practical application indicates that the prepared C40 steel fiber ceramisite deck concrete is excellent in each property, which can fully satisfy the application requirement of deck concrete.
    鋼纖維摻量對新老混凝土收縮差異的影響
    鋼纖維摻量對新老混凝土收縮差異的影響
    • 王 鵬,蔣玉川
    2011年第7期
    摘要
    引用本文
    摘 要:對鋼纖維混凝土與老混凝土粘結收縮性能進行了系統的試驗研究;從新老混凝土收縮差異的角度,分析了鋼纖維摻量對新老混凝土粘結收縮性能的影響。通過試驗及對比分析可知,新老混凝土的收縮差異受鋼纖維摻量及粘結面的共同影響,鋼纖維含量越高、距粘結面距離越近則新老混凝土的收縮差異越小。 Abstract: Abstract: The systemic experiment research on the adherence shrinkage performance between steel fiber reinforced concrete and old concrete are carried out. From the aspect of the shrinkage differences, the effects of content of steel fiber on adherence shrinkage performance between new and old concrete are analyzed. Through the experiment and comparing analysis, the differences of shrinkage between new and old concrete are affected both by content of steel fiber and bonding interface. The higher content of steel fiber, the closer distance with bonding interface, the difference of shrinkage between new and old concrete will become smaller.
    離心成型工藝與旋轉震動現象
    離心成型工藝與旋轉震動現象
    • 余兆熾
    2011年第7期
    摘要
    引用本文
    摘 要: 對照混凝土振動成型工藝,討論了離心成型工藝的特點;分析了離心成型特有的旋轉震動現象; 探討了以限制機具缺陷的程度來防止模具震動的可能性。 Abstract: Compared with concrete vibration casting process, the characteristics of centrifugal casting process are discussed. The special rotating vibration phenomenon of centrifugal casting is discussed, and the possibility of preventing the mould vibration by limiting the objection degree of equipment is investigated.
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