第二期_2014_《混凝土與水泥制品》雜志社

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第二期

艱難的起步——我國混凝土無損檢測技術在20世紀60年代的研究與工程應用回顧

楊斌

２０14年第2期

摘要

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摘要：介紹了我國混凝土無損檢測技術在1960～1968年期間，在實驗室研究、測定水泥強度、混凝土抗凍性、水泥抗硫酸鹽侵蝕性能等方面的研究成果。并論述了我國首次采用超聲波法、回彈儀法對南京長江大橋部分引橋、江蘇萬福閘閘墩、吉林豐滿電站大壩壩體等大型基礎設施混凝土質量進行現場檢測的情況。同時，對我國今后混凝土無損檢驗的研究與發展提出了建議。 Abstract: During 1960~1968s, the research result of concrete non-destructive inspection technology about experimental research, cement strength test, concrete freezing resistance and cement anti-sulfate corrosion in China were introduced in this paper. Some large infrastructures such as Nanjing Yangtze part approach bridge, Jiangsu Wanfu pier and Jilin Fengman power station dam body were introduced for quality test by ultrasonic method and resiliometer in China. Meanwhile, the research and development of Chinese concrete non-destructive inspection are suggested.

硅藻土用于纖維增強硅酸鈣板生產的試驗研究

夏惠鳳

２０14年第2期

摘要

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摘要：對比研究了砂和硅藻土分別作為主要硅質材料生產纖維增強硅酸鈣板的模塊及中試產品性能差異。結果表明，硅藻土可作為主要硅質材料生產低密度硅鈣板，最佳摻入量為50%；在工藝設計中應針對其特性，宜設置粉磨過篩工藝，同時要考慮提高脫水機烘干效率。 Abstract：The fiber reinforced calcium silicate boards are produced by using sand or diatomite as the main siliceous material, and the performance difference between the two kinds of products is compared and analyze. The results show that the diatomite as a main siliceous material can produce the low density calcium silicon board and the optimum content is 50%;In technical design, it’s necessary to set the grinding sieving process and enhance the drying efficiency of dewaterers at the same time.

路用透水型彩色再生混凝土的耐久性能研究

李美娟，朱平華，謝靜靜

２０14年第2期

摘要

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摘要：研究了摻加建筑垃圾的混凝土骨料制備的路用透水型彩色再生混凝土的抗凍融性能、抗碳化性能和耐磨性能與水膠比、聚丙烯纖維摻量、及顏料摻量的關系。結果表明，水膠比對路用透水型彩色再生混凝土的凍融性能、碳化性能和耐磨性能均有明顯的影響；摻加礦渣對路用透水型彩色再生混凝土的凍融性能有較明顯的有利的影響，對碳化性能和耐磨性有不利的影響。適量添加聚丙烯纖維對混凝土耐磨性能和凍融性能有一定有利影響，但摻加太多有不利影響，摻聚丙烯使透水性能顯著降低，對碳化性能無明顯影響。顏料摻量對彩色再生透水混凝土的透水性能、凍融性能、碳化性能和耐磨性能等耐久性能方面無明顯的影響。 Abstract: The permeable color recycled road concrete for medium traffic road is prepared by adding the construction waste, and the relationship of between the durability property of the concrete and some preparation condition is studied by the orthogonal test. The result shows that the water-binder ratio has an obvious effect on freezing-thawing, carbonation and wear-resisting of the concrete; adding the slag can enhance freezing-thawing and wear-resisting properties of the concrete, but isn’t good for the carbonation and wear-resisting properties of the concrete; adding polypropylene fiber has a favorable effect on freezing-thawing and wear-resisting properties of the concrete in a certain content, but has no obvious effect on carbonation. In addition, pigment content almost has no effect on the durability property of concrete.

造紙污泥焚燒灰用作混凝土礦物摻合料的試驗研究

張苡銘1，俞樂華2

２０14年第2期

摘要

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摘要：將高溫處理后的造紙污泥焚燒灰（PA）用作混凝土礦物摻合料，研究了其等量替代普通硅酸鹽水泥后對水泥強度等級及對混凝土工作性、抗壓強度以及抗折強度的影響。研究表明，不經處理的PA對混凝土的工作性和力學性能有不利影響；經過球磨處理的造紙污泥焚燒灰具有較高的火山灰活性，當平均粒徑低于100μm時可以等量取代硅酸鹽水泥而不降低水泥的強度等級，并且對混凝土的力學性能有積極作用。 Abstract: As a mineral addition, the paper mill ash (PA) after high temperature treatment is used to prepare concrete. The effect of PA which substitutes the equivalent content for Portland cement on the strength of Portland cement, the workability, compressive strength and flexural strength of concrete is studied. The results indicate that PA untreated has negative effect to the workability and mechanical properties of concrete. The grounded PA has a high pozzolanic activity. Equal replacement of Portland cement by grounded PA will not decrease the strength of cement when the average particle size is less than 100μm. Meanwhile, it is beneficial to the mechanical properties of concrete.

混凝土復合（EPS）自保溫砌體施工技術

劉陽，江昔平

２０14年第2期

摘要

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摘要：介紹了混凝土復合（EPS）自保溫砌體材料的特點以及這種砌體的施工工藝和施工要點，并著重介紹了砂漿、砌塊的砌筑和構造柱、芯柱部位的處理。 Abstract: Material characteristics, the construction technology and main points of construction of concrete composite (EPS) insulation block are introduced. The masonry of mortar and block, the process of constructional column and core column are especially presented during the construction.

上海地區三種自保溫墻體內部冷凝問題研究

陳寧

２０14年第2期

摘要

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摘要：對上海地區三種滿足建筑節能65%要求的自保溫墻體系統（陶?；炷列⌒涂招钠鰤K自保溫墻體、蒸壓加氣混凝土砌塊自保溫墻體、環保型淤泥燒結多孔磚自保溫墻體）進行了內部冷凝情況研究。結果表明，采用無機保溫砂漿作為輔助保溫時，三種自保溫墻體系統內部均不會出現冷凝現象。這有助于在分析三種自保溫墻體熱工性能和使用壽命的影響因素時，排除墻體內部冷凝產生的不利影響，并對研判自保溫墻體系統使用安全具有積極的指導作用。 Abstract: The condensation phenomenon occurring in three kinds of self heat-insulation systems (shale concrete block self heat-insulation system, autoclaved aerated concrete block self heat-insulation system, environmental protection type silt sintered porous brick self heat-insulation system) which are applied in Shanghai area and meet 65% building energy saving requirement is studied in this paper. The results show that no condensation phenomenon occurs in three kinds of self heat-insulation systems as the inorganic thermal insulation mortar is used as aided heat-insulation material. This conclusion is helpful to eliminate the adverse effect caused by condensation phenomenon when the influencing factors of wall thermal performance and service life are analyzed, and it plays a good guiding role in judging the service safety of self heat-insulation systems.

?；⒅楸鼗炷林袦p水劑的復配研究

曹銘真，李珠，趙林，張玉

２０14年第2期

摘要

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摘要：對泵送?；⒅楸鼗炷恋奶涠葥p失問題及解決方案進行了分析，通過在減水劑中摻入不同量引氣劑和緩凝劑進行了?；⒅楸鼗炷撂涠葥p失試驗，并確定了最優摻量。試驗結果表明，引氣劑最佳摻量為2‰，緩凝劑為2%。該摻量下坍落度為255mm；1h坍落度損失為15mm；28d抗壓強度為35.9MPa。解決了?；⒅楸鼗炷帘盟瓦^程中的坍落度損失問題和凝結時間問題。 Abstract: In order to apply the glazed hollow bead insulation concrete to the engineering better, its slump loss problem and the related solution are studied. The slump test of the concrete is carried out by mixing the air-entraining agent and retarder in the water reducer, and the optimal dosages of addition agents are determined. The result indicates that the optimal dosages of the air-entraining agent and retarder are respectively 2‰ and 2%. Using the optimal mix proportion, the slump of the concrete can reach 255mm, and its slump loss is 15mm after 1h, the 28d compressive strength of the concrete is 35.9MPa, which solves the problems of the slump loss and the setting time during the pumping construction process.

N型混凝土自保溫空心砌塊的熱工性能研究

李文勝，江昔平

２０14年第2期

摘要

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摘要：對N型混凝土自保溫空心砌塊進行了熱學參數計算和ANSYS傳熱模擬，并對比計算和模擬結果，分析出采用N型設計，可阻斷熱橋傳遞，提高砌體熱阻，從而獲得更好的熱工性能。 Abstract: The thermal parameters of N-type self-insulation concrete hollow block are calculated and heat transfer of the block is simulated using the ANSYS software. Then the calculation results and simulation results are compared and analyzed. It shows that using N-type design, the heat bridge transfer is interdicted, and thermal resistance of the block is improved, so a better thermal performance is achieved.

砂漿錨桿粘結性能試驗研究

劉亞林，楊樹桐，劉良

２０14年第2期

摘要

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摘要：通過三組粘結試驗研究了鋼筋錨桿、砂漿、混凝土三相介質錨固體中鋼筋極限拉拔力的大小，并探究了鋼筋直徑、鋼筋類型、粘結長度對錨固系統承載力的影響規律。 Abstract: Three series of bonding experiments are carried out to study the pullout capacity of the steel -mortar-concrete anchorage, and the influence of diameter and type of steel bar as well as anchorage length on the bearing capacity of anchorage is discussed.

高強箍筋約束高強混凝土短柱骨架曲線的影響因素

徐成，吳建文，蔣明慧

２０14年第2期

摘要

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摘要：以高強箍筋約束高強混凝土短柱試驗為基礎，研究了普通強度與高強箍筋在構件破壞過程中，箍筋強度和箍筋間距對短柱構件骨架曲線的影響。研究結果可為高強箍筋約束高強混凝土構件的應用提供理論基礎，并對鋼筋混凝土結構的抗震設計提供參考價值。 Abstract: Based on the experiment on high strength concrete column confined with high-strength stirrup, the influence of stirrup strength and stirrup spacing on skeleton curve of the ordinary strength and high-strength stirrup concrete components during the whole failure process of the components are studied. And the results show that it not only can provide the necessary theoretical basis for application of high-strength stirrup confined concrete, but can give good reference value to the seismic design of reinforced concrete structure.

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