摘 要：综述了国内外废旧橡胶改性水泥基材料的现有研究成果。分析了废旧橡胶改性水泥基材料未能得到广泛应用的原因，并指出了今后研究的方向。现有研究成果表明，掺入橡胶颗粒取代部分集料可以有效提高水泥基材料的抗冻性和抗渗性，成倍提高混凝土的弯曲疲劳寿命，同时使抗裂性、抗冲击性能也得到改善。此外，橡胶混凝土应用到结构构件中能提高结构的延性及耗能能力。 Abstract: The current research achievements of cement-based materials containing scrap rubber at home and abroad are summarized. The reasons why the cement-based materials containing scrap rubber is not applied widely are analyzed, and the future research direction is pointed out. Literatures show that the additive composition of scrap rubber replacing a part of mineral aggregate can improve the frost resistance and impermeability of the cement-based materials efficiently, increase the bend fatigue life of the concrete remarkably and enhance the crack resistance and impact resistance of concrete. Furthermore, rubberized concrete applied in the structural member can improve the ductility and energy dissipation capacity of the structure.

摘 要：利用X-射线荧光光谱仪、X-射线衍射仪以及强度法对自燃煤矸石的活性进行了研究，将自燃煤矸石部分替代水泥制备成水泥砂浆，研究自燃煤矸石活性、用量对水泥砂浆性能的影响。结果表明，煤矸石中在自燃过程中形成的活性物为α-石英、无定形SiO2、κ-Al2O3和无定形Al2O3。自燃煤矸石的疏松程度会影响其活性；晶相结晶度的高低决定自燃煤矸石活性的高低；自燃煤矸石活性越高，其水泥基复合材料体系强度越高。 Abstract: The activation properties analysis of spontaneous combustion coal gangue is studied after selecting, crushing, milling and sieving by X-ray fluorescence spectrometer(XRF), X-ray diffraction （XRD） and method of intensity, and using spontaneous combustion coal gangue partly replacing cement to prepare cement mortar, the effects of activation properties and dosages of spontaneous combustion coal gangue on properties of cement mortar are investigated. The results indicate that the active substance of spontaneous combustion coal gangue are ??quartz, amorphous SiO2, amorphous Al2O3 and Al2O3. The activation properties of spontaneous combustion coal gangue are affected by the crystallization rate of crystal phase, and the activation properties is affected by the structure loose ratio. The strengths of cement-based compound materials are increased with the activation properties of spontaneous combustion coal gangue heightened.

摘 要：以某发电厂双曲线自然通风冷却塔工程环形承台基础施工为例，介绍了大体积混凝土跳仓法施工的技术要点。同时给出了混凝土配合比、温度控制措施以及施工缝做法，解决了大体积底板因混凝土收缩应力及水泥水化热作用而出现的裂缝问题。 Abstract：Taking one power plants hyperbolic natural ventilation cooling tower engineering ring elevated pile caps foundation construction as an example, the technical key points of mass concrete concreting sequence method construction are introduced. The concrete mix proportion, temperature controlling methods and construction joint practice are pointed out to solve the mass slab crack problem resulting from concrete shrinkage stress and cement hydration heat.

摘 要：根据现有石膏砌块成型机空间夹具的运行情况，分析了生产过程中存在的问题，研制开发了新型的石膏砌块空间夹具和电气控制系统，提高了生产效率，保证了产品质量。 Abstract: According to the operating situation of space clamp of current gypsum block forming machine, the problems during the producing process are analyzed. The new space clamp of gypsum block and electric control system are researched and developed, which can improve the production efficiency and ensure the product quality.

摘 要：针对节能保温轻型抗震房屋的研究现状，对框架、墙体、楼板三方面进行了综合分析，从材料、技术方面提出了相应的防火处理措施，强调了结构整体防火的重要性。 Abstract: For the research status of light energy efficient thermal insulation anti-seismic buildings, there is a comprehensive analysis on the frame, wall and floor, and the corresponding fire prevention measures from the materials and technology aspects are proposed. The importance of whole structure fire prevention is emphasized.

摘 要：在砂浆中加入粉煤灰，不但能降低砂浆的成本，而且还能够改善砂浆的施工性能、提高砂浆保温性能。在满足加气混凝土（泡沫混凝土）抹面砂浆粘结强度高、收缩率低的前提下，粉煤灰掺量30%时，所配制的砂浆导热系数为0.1953W/m·K，与加气混凝土（泡沫混凝土）砌块导热系数接近，具有良好的保温效果。 Abstract: Adding fly ash into mortar can not only save costs of mortar, but also improve the workability and heat preservation performance of mortar. To meet the premise of high adhesive strength and low shrinkage of the aerated concrete (foamed concrete) surface mortar, the thermal conductivity of prepared mortar is 0.1953W/m?K when the content of fly ash is 30%, which is near the thermal conductivity of the aerated concrete (foamed concrete) block, and it has good heat preservation effect.