摘 要：在原有普通混凝土配合比基础上，采用钢渣粗、细骨料对混凝土中的天然骨料进行部分替代，进行钢渣混凝土配合比试验，分别用普通硅酸盐水泥和硫铝酸盐水泥作为胶凝材料进行配合比试验，比较了两种水泥钢渣混凝土的抗折、抗压强度及后期强度发展变化，并进行了不同水泥品种下，不同粒径钢渣混凝土的基本力学性能研究。 Abstract: On the basis of the existing ordinary concrete mix, the tests of slag concrete mix are carried out by using coarse and fine aggregate of steel slag for concrete to partially replace natural aggregate and using ordinary portland cement and sulphoaluminate cement as cementitious materials. Flexural strength, compressive strength and late strength development changes of the two kinds of slag concrete are compared, and the basic mechanical properties of the slag concrete with different size are studied.

摘 要：利用冶炼废弃物镍渣研制储热混凝土。研究表明，利用镍渣高密度的特性可以配置表观密度大、热容值高以及传热性能良好的混凝土储热材料。 Abstract：The heat storage concrete is developed by using nickel slag which is a kind of smelting waste slag. The studies show that the high density of the slag makes it possible to prepare heat storage concrete with high apparent density, high heat capacity and good heat transfer performance.

摘 要：对普通混凝土、大掺量矿渣粉混凝土和大掺量钢矿渣复合粉混凝土分别进行了基本性能试验研究，包括塑性混凝土性能、硬化混凝土力学性能和耐久性。试验结果表明，大掺量钢矿渣复合粉混凝土具有早期强度高、塑性收缩和干缩低、耐久性好等特点。 Abstract: The basic properties of ordinary concrete, concrete mixed with a large amount of slag power and concrete mixed with a large amount of steel slag composite powder are studied including the plastic properties of concrete, the mechanical properties and durability of hardened concrete. The test results show that the concrete mixed with a large amount of steel slag composite powder has good technical characteristics, such as high early strength, low plastic shrinkage and dry shrinkage, good durability.

摘 要：基于固硫灰的活性激发效应和钛矿渣的减水效应，提出通过复合化技术制备钛矿渣-固硫灰复合矿物掺合料，研究了其对砂浆和混凝土的工作性能和力学性能影响,并利用DTA、XRD和SEM等手段探讨了作用机理。结果表明，钛矿渣-固硫灰复合矿物掺合料显示出了活性相互激发和减水的叠加效应。与钛矿渣相比，钛矿渣-固硫灰复合矿物掺合料活性提高；与固硫灰相比，复合矿物掺合料明显改善了砂浆和混凝土的工作性。利用钛矿渣与固硫灰质量比为2：1的复合矿物掺合料所制备的混凝土工作性能及抗压强度与S75矿粉相当。 Abstract：Titanium slag-Circulating fluidized bed combustion (CFBC) fly ash composite mineral admixtures were prepared through the activity excitation of CFBC fly ash and water-reducing of titanium slag. The influences of composite mineral admixtures on the mechanical properties and workability of mortar and concrete were studied, and the mechanism was discussed by DTA, XRD and SEM, etc. The experiment results show that the properties of titanium slag-CFBC fly ash composite mineral admixtures are improved due to the synergistic effect compared with titanium slag and CFBC fly ash used independently. It is oberserved that the workability and compressive strength of the concrete with composite mineral admixtures are similar to those of concrete with S75 slag powder when the mass ratio of titanium slag and CFBC fly ash is 2：1.

摘 要：通过对大跨度薄腹板的方案设计、原材料性能检测、施工工艺研究、工程应用效果评价等内容的研究，对原有施工技术进行了系统改进；通过改善高强自密实混凝土性能、采用模块拼装式模板及复合式交互振捣这三项关键技术，有效减少了人工投入，节省了劳动力，减轻了环境污染，保证了工程质量。 Abstract: The project design of?a concrete bridge plate with large span and thin abdomen, the performance test of raw materials, the construction technology and engineering application effect evaluation are studied, and the construction technology for the original system is improved. By improving the three key technologies of high strength self-compacting concrete, the module with templates, complex interaction vibrating, it’s effective to save the labor, reduce the environmental pollution and ensure the quality of products.

摘 要：某剪力墙结构高层住宅楼群因电梯选购滞后于该住宅楼的设计和施工，导致电梯曳引机底座支撑工字钢及两端槽钢枕头梁与电梯机房两根钢筋混凝土柱发生位置冲突，须凿开这两根柱子，以插入曳引机底座钢梁。采用有限元法评估电梯安装工况下凿断柱子后上部结构的承载力和正常使用工况下部分柱筋永久截断后对机房承载力的影响，研究了相应的施工方案，最终通过钢管临时托换和膨胀细石混凝土填筑的方法，达到安全及施工便利的目的。 Abstract: Since the order of elevator lagged behind the design and construction of 8 shear wall structural high-rise domestic buildings, which caused a site conflict between the steel pedestal steel beams of the elevator traction machines and two existing RC columns, so the columns may need to be fully cut off. Then, the bearing capacity of components after the two RC columns were cut off was estimated and the adverse effects of cutting off part of rebars in the columns are studied. Finally, a construction schedule using the technology of temporary underpinned steel tubes and filling with expansive concrete was designed and carried out to achieve safe and convenient purpose.