摘 要：将稻壳灰等量部分替代水泥加入到混凝土中制备稻壳灰混凝土，并对稻壳灰混凝土进行7d和28d龄期的力学性能、抗冻性能、抗氯离子渗透性能和抗酸侵蚀性能的测试。结果表明，稻壳灰的加入能够显著地改善混凝土的内部结构，使其更加密实，从而增强了稻壳灰混凝土的力学性能、抗冻性能、抗氯离子渗透性能和抗酸侵蚀性能。当稻壳灰的掺量为20%时，混凝土的性能最佳，此时稻壳灰对混凝土的增强效果最好。 Abstract: The rice husk ash for same amout is added into concrete for preparing rice husk ash concrete. The mechanical properties at 7d and 28d, frost resistance, chloride penetration resistance and acid resistance properties of rice husk ash concrete are investigated. The results show that adding rice husk ash can improve the structure of concrete, which can finally enhance the mechanical properties, frost resistance, chloride penetration resistance and acid resistance properties. The maxmum properties of rice husk ash concrete is obtained with the 20% dosage of rice husk ash, at this time, the strengthending effects of rice husk ash on concrete is best.

摘 要：废弃混凝土中的硬化水泥浆体是资源、能源消耗最大、环境负荷最重、经济成本最高的部分，本文研究了硅酸盐脱水相的制备及其相关表征，研究表明，硬化后的水泥浆体在经过煅烧处理后能得到一种名为硅酸盐脱水相的物质，该物质遇水后能再次发生水化反应而得到具有强度的硬化结构体，其中以650℃煅烧温度下得到的硬化水泥浆体脱水相水化后强度最大。同时，还对硅酸盐脱水相-硅微粉系的性能进行了研究，为改善脱水相的强度，加入硅微粉进行了改性，发现加入硅微粉后有强度增加的趋势。 Abstract: The hardened cement paste in waste concrete is the part of the largest energy and resource consumption, the worst environmental impact and the most economic costs. The preparation of silicate dehydration phase and characterization are studied. The results show that a material called silicate dehydration phase can be obtained from the hardened cement paste after calcination, and rehydration hardening structure is obtained by adding silicate dehydration phase substance and water. The biggest rehydration strength of hardened cement paste dehydration phase is derived at 650℃. The research on performance of silicate dehydration phase-silica powder is studied. In order to improve the strength of dehydration phase, the modification for adding silica powder is carried out, the strength is improved after adding microsilica powder.

摘  要：泰州金融服务区二层地下室整体工程建筑面积约为18.68万m2，基础埋深为-19.50m，局部为-12.15m。以图示方法探讨了合理划分超长大体积混凝土结构施工区域（段）方法，归纳了跳仓法施工的具体步骤，分析了针对本工程特点采取的施工技术措施和组织措施，重点介绍了后浇带施工技术措施、施工缝处置技术措施、钢管混凝土柱浇筑方法、顶板混凝土防收缩裂缝措施，可为类似工程施工提供参考。Abstract:Thetwo-floor-undergroundbasementprojectofTaizhoufinancialservicecentrewitha-19.50meterembeddeddepthoffoundationand-12.15meterlocalburieddepthcoversanareaofabout186,800squaremeters.Illustratingasanimportantcarrier,thereasonabledivisionforconstructionareasofsuper-longconcretestructureconstructionisdiscussed,withasummaryoftheprocessesofthejumpwarehouseconstruction,measuresofconstructiontechnologyandorganizationalmeasuresofthisengeneeringareanalyzed,processesoftheconstructionofpost-caststrip,treatmentofconstructionjoints,thepreventionofroofconcreteshrinkagecrackandconcrete-filledsteeltubeareintroducted,whichcanprovidereferenceforprojects.

摘 要：研究了聚苯颗粒掺量为2400mL、2600mL、2800mL时各因素对泡沫混凝土性能的影响，确定了原料最佳配合比。结果表明，以比强度为考核指标时，最佳配合比为：水胶比0.65、泡沫掺量3500mL、聚苯颗粒掺量2800mL；以导热系数为考核指标时，最佳配合比为：水胶比0.55、泡沫掺量2500mL、聚苯颗粒掺量2400mL。孔结构分析表明，掺加聚苯颗粒泡沫混凝土的孔隙率增大和孔隙尺寸降低，都会明显提高其力学性能。 Abstract: The effects of various factors on properties of foam concrete are studied when polystyrene particles dosage is 2400mL, 2600mL and 2800mL, the best mix ratio of raw materials is determined. The results show that with the specific strength as assessment indicators, the best mixing ratio include that water/cement ratio is 0.65, foam dosage is 3500mL, polystyrene particles dosage is 2800mL; with the thermal conductivity as assessment indicators, the best mixing ratio include 0.55 water/cement ratio, 2500mL foam dosage, 2400mL polystyrene particles dosage. Pore structure analysis indicate that by adding polystyrene particles, porosity of foam concrete is increased and pore size of foam concrete is decreased, which can obviously improve its mechanical properties.

摘 要：通过正交试验方法对保温砂浆的性能指标进行了研究，得到初步配合比，在此基础上研究了玄武岩纤维的添加对复合保温砂浆性能的影响。结果表明，玄武岩纤维的掺入对复合保温砂浆试件的抗压强度、压折比有明显的改善效果，对材料的导热系数改善效果不明显。 Abstract: The research on performance index of thermal insulation mortar is carried out through orthogonal test method, preliminary mixture ratio is obtained, on the basis, the influence of adding basalt fiber on thermal insulation mortar is studied. The result shows that the effects of adding basalt fiber on compressive strength and crushing ratio of composite insulation mortar are obviously improved. However, improving effect on thermal conductivity of materials is not obvious.

摘 要：外挂墙板在建筑结构中广泛应用，新型泡沫混凝土外挂墙板与框架的连接节点对这种结构的安全性及可靠度有重要的影响。为研究该连接节点的受力机理及破坏模式，对两种配合比的泡沫混凝土分别预埋两种不同形式的节点，对其进行节点抗弯试验以及节点抗剪试验研究，系统对比不同形式的连接节点以及不同配合比的泡沫混凝土墙板对节点承载力的影响，分析墙板在荷载作用下的裂缝开展情况以及荷载-位移曲线。试验结果表明：双面钢板节点有良好的承载力、节点破坏后于墙板本身破坏，能实现墙板与框架安全有效的连接；在预埋双面钢板节点情况下，无陶粒配合比的泡沫混凝土与预埋节点的协同工作性能优于陶粒配合比的泡沫混凝土。 Abstract：External precast wall panels are widely used in building structure, the connection node between the new foam concrete external precast wall panels and framework have an important impact on the safety and reliability. To study the force mechanisms and failure modes of connections node, different foam concrete with mix proportion are used by two different embedded forms of connection node, the investigation for bending and shearing test of connections is carried out. Compared with different forms of node and different mix proportion of foam concrete wall panel by system, which have effects on capacity of node, as well as cracks development of wall panels under loading and the load-displacement curve are analyzed. The results show that, duplex steel node has good capacity, node destroy itself after the damage of wall panels, safe and effective connection between wall panels and frame can be achieved; under the situation of embedded duplex steel node, the work performance of foam concrete with non-ceramic mix proportion and embedded node is better than foam concrete with ceramic mix proportion.