摘  要：以城市垃圾焚烧灰为主要研究对象，采用水、磷酸分别对其进行预处理，对预处理后的飞灰采用水泥进行固化，测定固化体系的凝结时间、净浆抗压强度、无侧限抗压强度等物理力学性能，并检测固化体系的重金属浸出毒性。试验结果表明，固化体系的凝结时间随着水泥掺量的增加而缩短，水泥掺量超过20%时，固化体系的终凝时间能控制在10h以内；体系的净浆抗压强度、无侧限抗压强度均随着水泥掺量的增加而增大，其中，各固化体系的无侧限抗压强度值均达到稳定土填埋强度值（1.5MPa），重金属浸出浓度满足国家毒性浓度危险标准值（5～100mg/L）。Abstract：MunicipalSolidWasteIncineration(MSWI)Ashwaspretreatedusingwaterorphosphate,then,pretreatedMSWIashwassolidifiedbycement.Thesettingtime,compressivestrengthofthepaste,unconfinedcompressivestrengthandotherphysicalandmechanicalpropertiesofthesolidificationsystemaswellasitsheavymetalsleachingtoxicityweremeasured.Theresultsshowthatwiththeincreasingofcementcontent,thesettingtimeofsolidificationsystemshorten,andwhenthecementcontentismorethan20%,thefinalsettingtimeofthesystemcanbecontrolledwithin10h.Thecompressivestrengthofthepasteandunconfinedcompressivestrengthofsolidificationsystemincreasewiththeincreasingofcementcontent.Theunconfinedcompressivestrengthofeachsystemcanreachthestablesoillandfillstrengthvalues(1.5MPa).Theconcentrationofheavymetalscanmeetthenationaltoxicconcentrationsriskstandardvalue(5～100mg/L).

摘 要：研究了邯郸地区用砖混结构建筑垃圾生成的建筑垃圾人工砂的粒径、堆积密度、吸水率、压碎值指标等基本物理性能,分别以0、50%、100%的建筑垃圾人工砂等量取代天然细骨料配制不同强度等级混凝土，检验混凝土拌合物的性能、力学性能及耐久性能，探讨了建筑垃圾人工砂不同取代率对混凝土性能的影响。试验结果表明，建筑垃圾人工砂完全代替天然砂用于C60及以下强度等级的混凝土中是可行的，随着取代率的提高，混凝土强度有所降低；混凝土强度越高，降低幅度越大。 Abstract: The basic physical properties of construction waste artificial sand such as particle size, bulk density, water absorption, crushing value index were studied systematically and the construction waste artificial sand was made from construction waste of brick structure in Handan region. Different strength grade concrete was prepared by using 0, 50% and 100% of the construction waste artificial sand equivalent to replace mineral fine aggregate. The performance, mechanical properties and durability of the concrete mixture are tested, and the effect of different replace ratio of construction waste artificial sand on the performance of concrete is discussed. The experimental results show that it is feasible that construction waste artificial sand completely replaces natural sand of fine aggregate to prepare less than or equal to C60 strength grade concrete; with the improvement of replacement ratio, concrete strength reduce; the higher the concrete strength is, the bigger the strength reduction is.

摘  要：氯醇法工艺生产环氧丙烷产生的固体废弃物环氧丙烷渣对环境污染非常大，试验针对环氧丙烷渣综合利用展开研究。通过环氧丙烷渣中的Ca（OH）2与粉煤灰在（180℃，8h）饱和蒸汽条件下水热合成，制备出以水化硅酸钙托贝莫来石为主要水化相的陶粒。在水灰比一定的情况下，以环氧丙烷渣陶粒为粗集料，配制了不同陶粒的混凝土。通过正交实验法，研究了水热合成环氧丙烷渣陶粒组成对混凝土抗压强度的影响规律。试验结果表明，环氧丙烷渣陶粒的石英砂含量、钙硅比、壳层厚度是影响混凝土抗压强度的显著因素。Abstract:Thepropyleneoxidesludgeproducedduringtheproducingofepoxypropaneusingtheemulsifcationprocessisharmfultotheenvironment,sothecomprehensiveutilizationofthepropyleneoxidesludgeisstudied.Ca(OH)2fromthepropyleneoxideslagandflyash(180℃,8h)weresynthesizedinconditionsofsaturatedsteam,then,theceramsitewithhydratedcalciumsilicatetobermoriteasmainhydrationphasewasprepared.Differentceramsiteconcreteswerepreparedwiththesamewatercementratioandusingthepropyleneoxideslagascoarseaggregate.Theinfluencelawofthecomponentofpropyleneoxideslagceramsitebyhydrothermalsynthesisoncompressivestrengthoftheconcreteisstudiedbyorthogonaltest.Thetestresultsshowthatthequartzsandcontent,calcium-siliconratioandshellthicknessoftheepoxypropaneslagceramsitearethekeyinfluencingfactorsonthecompressivestrengthofconcrete.

摘 要：蒸压轻质砂加气混凝土砌块可减轻建筑物的自重、减小结构构件尺寸，提高建筑物隔声、保温、防火、抗渗和装饰等性能，满足现代建筑物综合性需求。本文介绍了蒸压轻质砂加气混凝土砌块在施工中的具体措施，在保证工期的前提下，还可提高砌筑工程的质量。 Abstract：In order to meet the comprehensive needs of modern buildings, lightweight autoclaved aerated concrete block can not only reduce the weight and size of structural component, but also improve the sound insulation, thermal insulation, fire prevention, anti seepage, decorative performance of buildings and so on. The specific construction measures for the concrete block are introduced. And it points out that the methods can improve the quality of building project on the premise of guarantee time limit for a project.

摘 要：以沙特阿拉伯王国新建南北铁路工程为依托，针对沙漠炎热干燥环境下高性能混凝土施工与质量控制，从超高温、长距离、大坍落度混凝土施工控制几个方面，提出了混凝土耐久性的技术保证措施。 Abstract：Based on New-built North-South Railway Project in KSA where the high performance concrete construction and its quality control should be carried out under the high temperature and dry environment in desert, the technology guarantee measures are put forward about concrete durability from the following aspects such as extra-high temperature, long distance, large slump concrete construction control and so on.

摘  要：分析研究了目前旋转电极结构对能耗、电极寿命及管桩质量的影响以及固定电极结构对电极使用寿命的影响。介绍了一种新型焊接电极，并指出，使用新型旋转电极和固定电极后，电极寿命明显提高，节能效果显著，同时可提高管桩质量。Abstract：Theinfluenceofthecurrentrotatingelectrodestructureonenergyconsumption,electrodelifeandpilequalityandtheinfluenceofthecurrentfixedelectrodestructureontheservicelifeoftheelectrodeareanalyzed.Anewtypeofweldingelectrodeisputforward,anditpointsoutthatafterusingtheweldingelectrode(includingrotatingelectrodeandthefixedelectrode),theelectrodelifecanbeprolonged,energy-savingeffectisremarkable,andmeanwhile,thequalityofthepilescanbeimproved.