第五期_2012_《混凝土與水泥制品》雜志社

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第五期

污泥焚燒灰渣無害化處理及其資源化利用技術研究

王志新，孫家瑛，周承功，黃鑒鱗

２０12年第5期

摘要

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摘要：污水廠污泥焚燒是一種有效的減量化處理方式，焚燒產生的污泥焚燒灰渣通常被運到填埋場進行填埋處置。根據污泥灰渣的物理特性，對其進行了急性毒性分析和水化活性分析，并經過無害化處理的污泥焚燒灰渣尋找到了使其資源化利用的新方法，即固化后制成的路基材料。用該法制成的路基材料抗壓強度滿足規定的技術要求，同時，重金屬浸出毒性也滿足國家固體廢物排放標準的要求。 Abstract： Incineration of sewage sludge is an effective reduction treatment, sewage sludge incineration ash is usually transported for landfill disposal. According to the physical characteristics of the sewage sludge incineration ash, acute toxicity analysis and hydration activity analysis are carried out, and new methods of sewage sludge incineration ash are found out for resource utilization with harmless treatment, which is making roadbed material after solidification. The compressive strength of this roadbed material can meet the technical requirements, while heavy metals leaching toxicity of solid wastes can meet the requirements of national emission standards for solid wastes.

西南商都工程混凝土施工技術

劉雄心

２０12年第5期

摘要

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摘要：以南寧市西南商都工程施工為例，介紹了不同部位混凝土的不同施工技術，闡述了各部位混凝土的質量控制要點。 Abstract：Taking one Nanning Southwest city project as an example, the different construction technologies of different concrete sections are introduced, and the key points of quality control of different concrete sections are described.

超長混凝土工業水池無縫施工技術的應用研究

殷玉珍

２０12年第5期

摘要

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摘??要：在試驗基礎上，對PVA纖維補償收縮混凝土的膨脹性能進行了研究，并結合實際工程，采用配置暗梁鋼筋，加強施工質量監控及現場溫控等技術措施，成功進行了148m超長混凝土工業水池的無縫施工。Abstract:Basedontheexperiment,theexpansionperformanceofPVAfiber-compensatingshrinkageconcreteisstudied.Combiningthepracticalprojects,ｗｉｔｈbeam-reinforcedconfiguration,thetechnologymeasuressuchasconstructionqualitymonitoringandfieldtemperaturecontrollingareenhanced.Non-jointconstructionissuccessfullycarriedoutforsuper-longconcreteindustrywaterpondwith148meters.

表面施工工藝對混凝土耐磨性的影響

張拓，岑國平，李新強，劉洲

２０12年第5期

摘要

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摘要：試驗研究了不同施工工藝對道面混凝土表面耐磨性的影響。結果表明，任何一種施工工藝處理后的道面混凝土耐磨性都會降低，降低幅度隨表面紋理構造深度的增大而增大，拉毛道面的磨槽深度低于刻槽道面，而刻槽道面的抗滑能力衰減率明顯低于拉毛道面。因此，在混凝土道面使用比較頻繁且防滑能力要求較高的機場，表面抗滑處理以刻槽道面相對較好。 Abstract： The effects of different construction technologies on the abrasion resistance of pavement concrete surface are studied by experiments. The results indicate that the abrasion resistance of airport pavement concrete will be reduced after any construction technology treatments, and the decreased degree is increased with the surface texture depth increasing. The abrasion of napped pavement is smaller than the snicked pavement, and the anti-slide attenuation rate of snicked pavement is obviously slower than the one of napped pavement. Therefore, the snicked pavement will be better for anti-slide which is in the frequent usage and high anti-slide requirement airport.

雙筋并繞全自動滾焊機的開發及應用

仲長平，趙仁義

２０12年第5期

摘要

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摘??要：介紹了雙筋并繞全自動滾焊機的設計思路、創新點和技術特點。指出，雙筋并繞有效解決了14～16mm鋼筋直徑鋼筋骨架難以成型的問題。同時，由于電控系統采用三相硅整流焊接技術，使該滾焊機還具有焊接壓力小、熱能傳遞快、焊接時間短等特點。Abstract：Thedesignideas,innovationpointsandtechnicalfeaturesoffull-automaticrollingaroundwelderswithdoublemuscleparallelwindingareintroduced.Anditpointsoutthattheschemeofdoublemuscleparallelwindingcaneffectivelyresolvetheproblemofframeworkofsteelreinforcementwith14～16mmbardiameterhardtomould.Meanwhile,becauseofusingthethree-phasesiliconrectifierweldingtechnology,thefull-automaticrollingaroundwelderhasmanyadvantagessuchaslowerweldingstress,fasterheattransferspeed,shorterweldingtime.

淺析預應力簡支T形梁混凝土質量缺陷的防治措施

魯愛民

２０12年第5期

摘要

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摘要：介紹了預應力簡支T形梁混凝土施工中常見的幾種質量缺陷，結合工程實際，分析了產生缺陷的原因；提出了相應的預防措施和處理措施。針對預應力混凝土簡支T形梁危害較大的質量缺陷—孔洞做了重點論述，并結合試驗與現場施工驗證，將補償收縮混凝土應用于混凝土孔洞修補中，結果表明，補償收縮混凝土用于修補混凝土孔洞是可行的。 Abstract: The common quality defects in the concrete construction of prestressed simple branch T-shape beams are introduced. Combining with project practices, the reasons for the defects are analyzed and the relevant preventive and treatment measures are proposed. The more harmful quality defect—holes in the prestressed concrete simple branch T-shape beams is significantly discussed, and the shrinkage-compensating concrete is applied in the concrete holes repairing combined with the test and field construction verification. The results show that the shrinkage-compensating concrete applied in the concrete holes repairing is feasible.

一種新型自保溫輕集料混凝土多孔磚的研究

吳鋒，周智民，宋志斌，吳承恩

２０12年第5期

摘要

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摘要：利用采石場廢棄石渣粉、廢舊聚苯乙烯泡沫顆粒、水泥為原料，經過孔型設計、配合比設計和生產試制，研制了一種新型自保溫輕集料混凝土多孔磚，并進行了墻體熱工試驗。試驗表明，所研制的輕集料混凝土多孔磚保溫性能好，其墻體熱工性能完全滿足夏熱冬冷地區居住建筑節能50%墻體熱工性能規定性指標要求。 Abstract: Using gravel powder, waste polystyrene foam particles and cement as raw materials, through pass design, mix proportion design and trial production, a new kind of self-insulating lightweight aggregate concrete perforated brick is prepared, and the wall thermal performance is tested. The tests show that the thermal performance of the lightweight aggregate concrete perforated brick is well and the wall thermal performance meets the requirements of stipulating indexes in hot summer and cold winter region residential building energy efficiency 50%.

黃河淤泥制備黏土基墻體材料性能研究

楊久俊，劉俊霞，陳曉飛，張磊

２０12年第5期

摘要

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摘要：分析了黃河淤泥的特性，通過離子交換激發黃河淤泥活性，討論了不同激發劑的活化效果。以活化土為主要原料，摻入無機固化劑、有機固化劑及黃麻纖維制備黏土基墻體材料，并研究了固化強化措施對其性能的影響。結果表明，2%的復合激發劑（水玻璃/氯化鈣=1/1）能有效活化黃河淤土，采用活化土：無機固化劑：砂=65:25:10的配合比，輔以1.8%聚丙烯酸鈣和0.8%的黃麻纖維即可制備出滿足MU10等級要求的黏土基墻體材料。 Abstract: Activity of Yellow River silt is stimulated through the ion exchange on the basis of its characteristics analysis and the activation effects of different agents are discussed. Clay-based wall materials are prepared by activated silt and cementitious binder as main raw materials supplemented by organic solidification agent and jute fiber, and the strengthened measures on its properties effects have been studied. The results show that 2% compound activator (water glass/calcium chloride=1/1) can effectively activate the Yellow River silt. Clay-based wall materials meeting the demand of MU10 brick can be prepared with mixture ratio of activated silt: cementitious binder: sand=65: 25: 10 strengthened by 1.8% polypropylene calcium and 0.8% jute fiber.

地下工程混凝土的體積穩定性研究

蔣曉曙，李莽，陸雷

２０12年第5期

摘要

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摘要：研究了粉煤灰、礦粉、纖維素纖維、PVA 纖維及其混雜摻入對混凝土體積穩定性的影響。結果表明，粉煤灰、礦粉均能有效提高混凝土的抗氯離子擴散性能，兩者復摻更有利于氯離子擴散系數的降低，單摻礦粉較單摻粉煤灰好。摻入不同品種纖維的混凝土收縮率隨時間而變化，時間越長各品種纖維混凝土的收縮率減小，在抑制混凝土長期抗裂方面，PVA纖維的作用效果最好。 Abstract：The effects of single or duplicate mixes of fly ash, mineral powder, cellulose fiber and PVA fiber on the volume stability of concrete are studied. The results show that the fly ash and mineral powder can effectively improve the chloride ion resistance diffusion, the chloride diffusion coefficient is reduced more by combined mixture of the fly ash and mineral powder, and the effect of mineral powder is better than the ones of the fly ash. The shrinkage rate of concrete mixed with different varieties of fiber is changed by the time, the longer time passing, the smaller shrinkage rate of all varieties of fiber reinforced concrete. The PVA fiber has the best effect on the crack resistance of concrete in a long time.

纖維水泥制品行業生產中混水利用的工藝要點

徐定豐

２０12年第5期

摘要

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摘??要：纖維水泥制品行業生產中循環用的混（回）水大量存在，如果不能很好地加以利用，一方面會影響制品的強度，另一方面會造成廢渣沉積、增加生產成本，同時使作業環境惡化。通過對循環混水工藝和設備的改進，使混水得以及時利用，清混水罐8個月甚至13～14個月清一次也不會發生堵罐和積渣現象。Abstract：Muchmixingwaterinfibercementproductsindustryduringtheproductionisexisted,ifthemixingwatercannotbewellused,notonlythestrengthofcementproductswillbeaffected,butalsoproducingcostwillbeincreasedbyaccumulatingmixingwasteresiduewithbringingthebadworkingenvironment.Throughimprovingthetechnologyandequipmentofcyclicmixingwater,?themixingwaterwillbeusedimmediately,andtheslagwillnotbepluggedoraccumulatedineightmonthsoreveninthirteen～fourteenmonthsforoncecleaning.

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