摘  要：研究了掺入废旧橡胶颗粒及废旧聚氨酯颗粒的改性水泥砂浆的机械性能和导热系数。以体积比0，10%和30%的废旧橡胶颗粒及废旧聚氨酯颗粒代替石英砂配制出几种改性砂浆，通过试验检测了橡胶颗粒及聚氨酯颗粒掺合物对新拌砂浆的质量、抗压强度、抗弯强度和导热性能的影响，并通过掺加石灰石粉末作为填料得到最优化的改性砂浆配比。结果表明，掺入橡胶颗粒及聚氨酯颗粒降低了材料的单位重量和导热系数，同时增强了隔热性能。的单位重量和导热系数，同时增强了隔热性能。Abstract:Themechanicalbehaviourandthermalconductivityofcementmortarwitheithersolerubber(SR)orpolyurethane(PU)wasteparticlesarestudied.Severalmortarmixturesarepreparedbyreplacingquartzsandwith0,10%,and30%ofeitherSRorPUpost-consumerplasticparticles.TheinfluencesofSRparticleorPUparticleonthequality,compressivestrength,flexuralstrengthandthermalconductivityofthefreshmortararetested.Anoptimizationofmortarmixtureproportionsiscarriedoutbyaddingalimestonepowderasfiller.ThestudyresultsshowthataddingtherubberparticlesandPUparticlesincementmortarcanreducebothunitweightandthethermalconductivityoftherawmortar,andreinforceitstheat-insulatingproperty.

摘  要：选用热容大的玄武岩、冶炼钢渣为集料，硅酸盐水泥作为蓄热材料的胶凝剂，添加矿渣粉和硅微粉提高了蓄热材料力学性能，掺入一定比例石墨粉改善了蓄热材料热学性能，所制备的蓄热混凝土在200～500℃高温阶段抗压、抗折强度综合性能表现突出，在温差300～500℃，其平均比热为2272J/（kg·K），每m3蓄热混凝土的理论蓄热量可达335.75kWh。Abstract:Usingthelargeheatcapacitymaterials(basaltandsmeltingslag)asaggregateandPortlandcementasthegelatinizer,theheatstorageconcretewithgroundslagandsilicapowerforincreasingthemechanicalpropertiesofconcreteandacertainproportionofgraphitepowderforimprovingthethermalperformanceoftheheatstoragematerialisprepared.Thestudyresultsshowthatthecompressivestrengthandflexuralstrengthoftheheatstorageconcretearegreatin200～500℃,theaveragespecificheatoftheconcreteis2272J/(kg·K)in300~500℃,andthetheoreticalheatstoragevalueoftheconcreteis335.75kWh/m3.

摘 要：采用50℃热水加速老化的方法，以抗折强度的变化为考察目标，研究了废砖取代天然砂、粉煤灰取代水泥对GRC耐久性的影响。结果表明，废砖取代GRC中天然砂对其耐久性有提高作用；粉煤灰在废砖及天然砂混合骨料GRC体系中对玻璃纤维的“保护”作用较在天然砂骨料GRC体系中强；废砖以45%的体积取代率取代天然砂，较之粉煤灰以20%质量取代率取代水泥对GRC的耐久性改善作用大，二者同时取代时较之单独取代效果好。 Abstract: By using the method of accelerating GRC ageing, the effects of waste brick and fly ash on the durability of GRC are researched. The results show that the durability of GRC can be improved when natural sand in GRC is replaced by waste brick. The improving effect of fly ash on the durability of GRC with waste brick aggregate is greater than the one with natural sand aggregate. The improving effect on the durability of GRC with natural sand replaced by 45% waste brick (volume fraction), is greater than the one with P·O cement replaced by 20% fly ash(mass fraction), and the effect is greater when natural sand and cement are replaced simultaneously by waste brick and fly ash with the replacement rate mentioned above.

摘 要：以鄂尔多斯市体育中心体育馆工程为依据，分析了斜筒柱的关键施工技术的难点，针对该技术要点提出了相应的施工措施，同时还介绍了斜筒柱的施工技术，包括斜筒柱钢筋工程、模板及支撑架施工、混凝土工程。 Abstract: Based on the ordos sports center stadium project, the difficult points in the key construction technology of inclined cylinder are analyzed. The corresponding construction measures for the technical main points are put forward, and the construction technology of inclined cylinder including oblique cylinder steel bar engineering, template and support frame construction and the concrete engineering are introduced in detail.

摘 要：以解放军某博物馆工程为实例，针对筏板基础防水工程的设计与施工，提出了刚性防水加柔性防水的复合防水施工方案。工程实际表明，该方案防水效果良好且能够满足规范要求，施工操作也相对简单，并能有效保证地下室功能的安全。 Abstract: By the people's Liberation Army Museum project as an example, aiming at the design and construction of the raft foundation waterproof engineering, the composite waterproofing construction scheme of the rigid waterproof and flexible waterproof is put forward. Engineering practice shows that the scheme has good waterproof effect and can meet the requirements of correlative specification, and its construction operation is relatively simple, and it can effectively ensure the safety of the basement function.

摘 要：新制定的建材行业标准JC/T 2126.6-2012《水泥制品工艺技术规程 第6部分：先张法预应力混凝土管桩》已于2013年6月1日实施。为了便于该标准的使用方准确理解标准条款的具体含义，正确贯彻实施标准条款的具体要求和规定，本文介绍了该标准的制定过程，并对标准的主要条款及其制定依据进行了解释和说明。 Abstract：The new building material industry standard of JC/T 2126.6-2012 Process technology specification for cement products Part 6: Pretensioned spun concrete piles was implemented on June 1, 2013. In order to accurately understand the meaning of standard provisions and implement the specific requirements of the standard provisions for user, the formulation process of the standard is introduced, meanwhile, the main provisions of the standard and its formulation basis are explained and illustrated.