摘  要：石灰石粉用作混凝土矿物掺合料还存在一些疑问，通过分析，探讨了石灰石矿物掺合料和人工砂的区别、石灰石粉是否是惰性掺合料、石灰石粉对混凝土力学性能的影响以及石灰石粉对混凝土耐久性能的影响。Abstract:Therearesomedoubtsaboutlimestonepowderusedasmineraladmixtureinconcrete,throughtheanalysis,thedifferencebetweenlimestonepowderandartificialsand,whetherlimestonepowderisnon-activemineraladmixtureornot,theeffectoflimestonepowderonmechanicalpropertiesofconcrete,andtheeffectoflimestonepowderonthedurabilityofconcretearediscussed

摘 要：从混凝土外加剂的种类及其基本性能方面，介绍了各类混凝土外加剂的应用范围，提出了混凝土外加剂在应用的过程中应注意的几个问题。 Abstract: Based on the varieties and basic properties of concrete additives, the application scope for concrete additives is introduced, and the attention problems on concrete additives during the application process are proposed.

摘 要：针对高层建筑底板大体积混凝土冬季施工对工程技术人员、机械设备、施工人员以及施工技术的要求，从施工过程、冬季施工的技术措施及养护措施等方面进行了分析和探讨。 Abstract: According to the requirements of mass concrete for high-rise building floor in winter construction to technical engineers, mechanical equipment, constructors and construction technology, the construction process, technical measures of winter construction curing measures are analyzed and discussed.

摘 要：基于锈蚀钢筋混凝土梁中钢筋与混凝土之间粘结应力退化的现象，结合钢筋锈蚀后材料性能的劣化，对锈蚀钢筋混凝土梁抗弯承载力进行了研究。依据材料劣化后梁的截面平衡方程, 引入粘结影响因子得到新的变形协调条件，将锈蚀后粘结力对抗弯承载力及破坏形式的影响划分为四个锈蚀阶段，建立了锈蚀后钢筋混凝土梁抗弯承载力的计算模型，并利用该模型对比验证了已有试验梁的试验数据。结果表明，模型计算结果与试验结果吻合较好，说明计算模型有良好的工程实用价值 Abstract: Based on the phenomenon of the bonding stress degradation in corrosion reinforced bar concrete beams, combining the material deterioration after steel bar corrosion, the flexural bearing capacity of corrosion reinforced concrete beams is investigated.?Under the introduction of the new bonding deformation compatibility condition, equilibrium equations are utilized to analyze the characteristics of corrosion reinforced concrete beams. The effects of bonding stress on the flexural bearing capacity and damage forms are divided into four stages of corrosion, the calculation model of the flexural bearing capacity of reinforced concrete beams are established and the test data of beams are validated using the comparison of the model. The results show that the model agrees well with the experimental results, which is expected that the calculation model has good practical value.

摘  要：通过一栋三层办公楼实例，对常用的砖混结构震害预测方法进行了对比与分析，提出了较为科学和实用的预测方法，为城市防灾减震规划设计的科学决策提供了理论依据。 Abstract:Anexampleofthree-storeyofficebuildingisusedtocompareandanalyzeusualmethodsforseismicdamagepredictioninbrick-and-concretecompositeconstruction.Ascientificandpracticalforecastmethodisproposedtobehelpfulforthescientificdecision-makinginurbanplanningofdisasterpreventionandearthquakereduction.

摘 要：介绍了混凝土自保温砌块墙体热工性能判定的两种方法—直接法和间接法。重点阐述了间接法计算外墙传热阻、平均传热系数的方法和过程。并以工程为例，说明了外墙平均传热系数的计算思路和计算方法。 Abstract: Two ways to measure the thermal performance of the wall of concrete self thermal insulation blocks—direct and indirect ways are introduced. The method to calculate the heat transfer resistance and the average transfer coefficient（Km） of the external walls by indirect way is mainly introduced. Taking some projects for examples, the thought and method to calculate average heat transfer coefficient of external walls are further explained.