第五期_2014_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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第五期

绿色建筑建设中的可持续发展水泥

王贵生

２０14年第5期

摘要

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摘要：每年有大量的废弃物被处理至垃圾填埋场，全球自然资源日益枯竭，二氧化碳排放问题愈发严峻，所有这些问题都是促使研究机构和工程界探索土木工程领域中可持续解决方案的主要动机。因此，绿色建筑建设中可持续性建材的使用是短期内必须要实现的重要目标。可持续发展水泥可通过用无害废弃物代替部分熟料而减少水泥的生产。将废弃物转变成水泥的再生原料，是降低环境负荷、实现可持续发展的重要途径。本文讨论了水泥制造工艺环节和它对环境污染的影响以及实现可持续发展的途径。 Abstract: There are a lot of wastes treated to a landfill each year, the world's natural resources are depleted, carbon dioxide emissions problem is more severe, all of these are the research institutions and engineering field to explore the main motivation of sustainable solutions in the field of civil engineering. Therefore, the use of sustainable building materials in green building construction is an important target which must be achieved in the short term. Sustainable development cement can reduce the cement production by using the innoxious wastes to replacing part of cement clinker. The wastes into recycled raw materials of cement is an important way of reducing the burden on the environment and achieving sustainable development. The ways to cement manufacturing process and its effect on the pollution of the environment and the implementation of sustainable development are discussed in this paper.

稻壳灰作混凝土掺合料的试验研究

明阳，李杰，张凯峰，孙冲，向佳瑜

２０14年第5期

摘要

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摘要：通过试验分析了高温稻壳灰的各项性能，并通过研究稻壳灰粉磨细度和活性确定了稻壳灰粉磨时间为30min，通过胶砂和混凝土试验确定了稻壳灰作混凝土掺合料的适宜掺量为20%，采用电通量法研究了稻壳灰对混凝土氯离子渗透性的影响，结果表明，掺20%稻壳灰后混凝土抗氯离子渗透性能得到改善。 Abstract: The performance of high-temperature rice husk ash is analyzed. It is determined that the grinding time is 30 minutes by studying the activity and grinding fineness of rice husk ash, and the optimal content of rice husk ash is 20% in the cementitious material by mortar and concrete tests. In addition, the chloride ion penetration of concrete is studied using the electric flux method. The result shows that the chloride ion penetration of concrete is improved when 20% of the rice husk ash is added in concrete.

城市生活垃圾焚烧底灰混凝土耐久性研究

张涛，赵增增

２０14年第5期

摘要

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摘要：将30%质量的城市固体废物焚烧（MSWI）底灰掺入混凝土中替代水泥，通过对底灰混凝土的收缩率，抗碳化性、抗渗性、抗冻性等进行试验，并与普通混凝土进行对比，研究了底灰作为水泥替代物的可行性。研究结果表明，测试的垃圾焚烧底灰具有一定的火山灰活性，一定范围内掺加底灰的混凝土具有较小的收缩率，抗碳化性、抗渗性、抗冻性能优异，底灰的引入可以改善混凝土的耐久性。 Abstract：Using 30% municipal solid waste incineration (MSWI) bottom ash to replace cement in concrete, the shrinkage, carbonation resistance, impermeability, frost resistance of the bottom ash concrete are tested. Compared with ordinary concrete, the feasibility of the bottom ash as the cement substitute is studied. The study results show that the waste incineration bottom ash has a certain ash activity. The concrete with a certain amount of bottom ash has a smaller shrinkage rate and better performances of carbonation resistance, impermeability, frost resistance. Adding the bottom ash in the concrete can improve the durability of concrete.

废弃阴极射线管玻璃在混凝土中的应用研究

栗建新，石建军，刘华良，刘权

２０14年第5期

摘要

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摘要：从废CRT玻璃的掺量和粒径、矿物掺合料等几个方面研究了其对混凝土的工作性能、力学性能、耐久性、金属铅浸出值的大小和防辐射性能的影响，分析了CRT废玻璃作为骨料在混凝土发展过程中存在的问题,提出了将CRT废玻璃磨细代替一部分骨料，并掺加相应的重骨料应用于自密实混凝土中的思路。 Abstract: The effects of amount and particle size of recycled CRT glass, mineral admixtures on concrete properties of working capability, mechanical, durability and leachable content of lead, radiation-proof are studied. The current problems and research gasps are analyzed. Utilizing recycled CRT glass as aggregates and with the addition of heavy aggregates in the self-compact concrete is proposed for the development of thecathode ray tube concrete.

地下室圆弧清水混凝土单侧支护爬模施工技术

张晓兵，李海涛

２０14年第5期

摘要

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摘要：以某工程为实例，比较了组拼式钢模板、钢框胶合板模板和木梁塑料模板，选择木梁塑料模板体系，根据现场条件和构件特征，选择采用单侧支模和挂架爬模施工技术，介绍了模板选型、材料、工艺，并归纳了施工过程中需重点控制的几项关键技术。 Abstract: Through comprehensive comparing three kinds of solutions（spellers type steel formwork, steel frame plywood formwork and wooden beam plastic template）,and according to the site conditions of a project and component characteristics, the technology of single erecting and pylons jumping wood formwork is chosen. Meanwhile, the formwork materials, construction technology are introduced, and the key technical control measures are summed up.

双速电机在管桩钢筋骨架滚焊机中的应用

关利民

２０14年第5期

摘要

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摘要：采用变频调速加变极调速双重调速原理，利用变频器控制双速电机运转实现较宽范围的速度调节。在保证正常低速焊接的前提下，使管桩钢筋骨架滚焊机中的牵拉小车在卸料后能迅速返回，在人工穿筋结束前返回到位，避免人工等待时间，提高生产效率。 Abstract:Based on the double speed control principle of frequency control of motor speed and pole-changing control, the inverter is used to control two-speed motor in order to achieve the aim of a wider range of speed control. On the premise of guarantee normal welding at low speed, the pull-tensile trolley for the pile reinforcement skeleton seam welder can quickly return to the right place after unloading and before the end of the artificial wear reinforcement, which can avoid the artificial waiting time and improve the production efficiency.

《内衬PVC片材混凝土和钢筋混凝土排水管》新标准解读

谈永泉1，满高鹏2，俞锋1，沈丽华1，黄剑3，倪靖珂4

２０14年第5期

摘要

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摘要：介绍了即将发布的行业标准《内衬PVC片材混凝土和钢筋混凝土排水管》编制背景、编制目的和意义，并对标准的主要条款作了解释和说明。 Abstract: The compilation background, purpose and significance of industry standard “PVC lining concrete and reinforced concrete sewer pipe” which will be published soon are introduced. And the main modified items of the standard are introduced and explained.

硅酸钙板导热系数影响因素的研究

吴志均，王法云，许文成，梁婉兴，徐晓燕

２０14年第5期

摘要

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摘要：探讨了材料类型、密度、含水率、测试温度等因素对硅酸钙板导热系数的影响。结果表明，硅酸钙板的结构类型不同，其导热系数会存在较大差别；密度越小，其孔隙率相对越大，导热系数值就会越小；导热系数随着含水率的增加出现先缓慢增加再迅速增加后趋于平稳的趋势；绝干或含水率较低情况下，其导热系数随着平均温度的升高而增大，且密度等级越低，增幅越大，但由于加热法测量导热系数的过程中存在湿分迁移效应，当含湿量超过一定值时（约8%～10%），测试平均温度越高，其导热系数反而越小。Abstract:Theeffectsofmaterialtype,density,moisturecontent,testtemperature,etc.onthermalconductivityofcalciumsilicateboardarestudied.Theresultsshowthatitsthermalconductivitydiffersaccordingtoitsstructureandtype.Thesmallerthedensity,thegreatertherelativeporosity,whichleadstothesmallerthermalconductivity.Thethermalconductivityincreasesslowlyatfirstandthenrapidlyincreasesandlasttendstobeconstantwiththeincreaseofmoisturecontent.Undertheconditionofabsolutelydryorlowmoisturecontentofthesample,thethermalconductivityincreaseswiththeincreaseoftheaveragetemperature,andthelowerthedensitygrade,thefasterthegrowthofthethermalconductivityis.However,duetothemoisturemigration,thehighertheaveragetesttemperature,thesmalleritsthermalconductivityis,whenthemoisturecontentexceedsacertainvalue(about8%to10%).

不同改性材料对生土墙体材料性能的影响

郑寒英1，刘家拥2，朱柯3，邓少桢4，刘奇4

２０14年第5期

摘要

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摘要：以挤塑成型制备的制品为对象，研究了以风化页岩部分取代生土材料作为原材料，稻壳灰、水玻璃、植物纤维等改性材料对生土材料制品性能的影响规律，并采用XRD、SEM对改性土进行微观结构分析，探究各种改性材料的改性机理。研究结果表明，植物纤维、稻壳灰、水玻璃等改性材料对制品力学性能和耐久性的改善效果不一致。 Abstract：Taking the extrusion molding products made of weathering shale and raw soil as research objects, the influence rule of plant ash fiber, rice husk ashand sodium silicate as modifier on extrusion molding product properties are investigated. Besides, the modification mechanism of raw soil wall material is analyzed by using XRD and SEM. The study reveals that the influence of plant ash fiber, rice husk ash, sodium silicate on mechanical properties and water resistance performance is inconsistent.

生石灰、铝粉膏及水的用量对蒸压加气混凝土砌块的影响

刘宏，刘红宇

２０14年第5期

摘要

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摘要：通过实验室模拟试验，研究了生石灰、铝粉膏及水的用量对利用固硫灰渣生产蒸压加气混凝土砌块的干密度及抗压强度的影响。试验结果表明：当固硫灰渣的用量较大时，生石灰的用量是主要的影响因素，其用量不应低于17%；铝粉膏的用量对抗压强度的降低影响较显著，对干密度的减少影响相对较小，其用量不宜超过0.08%；在满足砌块生产时对料浆稠度要求的条件下，水的用量主要影响抗压强度。 Abstract： The influences of quicklime, aluminite pastes and water in different contents on the dry density and compressive strength of autoclaved aerated blocks which are mainly made of fluidized bed combustion ashes (FBCA) are studied by experimental tests systematically. The experimental tests show that the content of quicklime is a primarily influencing factor, and it should not be under 17% when the large content of FBCA is used. The compressive strength of autoclaved aerated FBCA blocks is reduced obviously and the dry density has not been affected too much by the content of aluminite pastes. Besides, it should be noted that the content of aluminite pastes cannot exceed 0.08%. The content of water primarily influences the compressive strength of autoclaved aerated FBCA blocks when complying with the requirements of slurry consistence in blocks production.

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