摘 要：研究了疏浚泥对混凝土坍落度和力学性能的影响，并对掺疏浚泥混凝土的耐久性能进行了分析。结果表明，疏浚泥的掺入能有效降低混凝土坍落度；水胶比不变时，掺疏浚泥混凝土早期强度与基准混凝土一致，后期强度略有提高，且疏浚泥掺量在30%时，混凝土收缩增加，抗水渗透和抗氯离子渗透性能均有提高。 Abstract: The influence of dry dredged mud on the slump and mechanical properties of concrete is studied, and the durability of concrete with the dredged mud is analyzed. The results show that adding the dry dredged mud can reduce concrete slump; the early strength of concrete with dredged mud is almost consistent with that of the normal concrete, and the later strength of the concrete improve slightly when having the same water-cement ratio. In addition, the shrinkage of concrete increases and the performances of the resistance to water penetration and chloride ion penetration improve when the content of dredged mud is 30%.

摘 要：以内蒙古某地高铝煤矸石为研究对象，采用胶砂强度法研究了其最佳热活化条件，并将活化后的煤矸石分别取代水泥和掺合料硅灰应用于水泥基灌浆料中。结果表明，该高铝煤矸石的最佳热活化温度为800℃；活化高铝煤矸石替代水泥基灌浆料中的水泥时，可使其流动度下降，但替代其掺合料硅灰时，可使其流动度增加；活化高铝煤矸石无论是替代灌浆料中的水泥还是硅灰，均可使灌浆料的凝结时间缩短；活化高铝煤矸石替代灌浆料中的水泥时，对初期强度不利，但7d后强度均有不同程度提高，活化高铝煤矸石替代灌浆料中的硅灰时，可提高其强度，取代率越大，提高幅度越大，完全取代效果最好。 Abstract: The heat-activated condition of high alumina coal gangue in Neimenggu is studied, and then, the activated coal gangue is used in grouting material to study the application effect. The result shows that the optimal calcining temperature of high alumina coal gangue is 800℃. The fluidity of the grouting material decreases when Portland cement is replaced by the activated coal gangue, but increases when silica fume is replaced. Adding the activated coal gangue can shorten the setting time of grouting material. The compressive strength of the grouting material enhances when silica fume is replaced by activated coal gangue powder, and the more the replacement ratio, the greater the strength; the compressive strength of grouting material enhances when cement is replaced by activated coal gangue powder after 7d,but decreases in1d.

摘 要：将废混凝土、废砖再生粗砂和特细砂混合后得到建筑垃圾再生混合砂，研究了水胶比、建筑垃圾再生粗砂取代率和粉煤灰取代率对砂浆性能的影响，通过正交层次分析、方差分析和综合评分法，得出再生砂浆的最佳配合比。结果表明，水胶比和粉煤灰取代率是影响再生砂浆性能的主要因素，粉煤灰取代率增大对再生砂浆强度具有较大的劣化作用，建筑垃圾再生粗砂取代率对砂浆稠度的影响较大，对抗压强度和抗折强度的影响最小。 Abstract: Recycled construction waste mixed sand was obtained by mixing recycled concrete coarse sand, recycled brick coarse sand and ultra fine sand. The effect of the recycled aggregate replacement ratio, the water-binder ratio and the fly ash replacement ratio on the performances of recycled mortar is researched. By analytic hierarchy process, variance analysis and the method of synthetically judgment，the optimal proportion was obtained. The results show that the water-binder ratio and the fly ash replacement ratio are the key factors for the performances of recycled mortar. The increasing of fly ash replacement ratio has negative effect on recycled mortar strength. The recycled aggregate replacement ratio has a significant impact on consistency and minimal impact on compressive strength and bending strength.

摘 要：蒸压轻质加气混凝土（ALC）板具有重量轻, 隔音、隔热效果好，耐火和环保性好等优点。本文介绍了ALC整间墙板制作过程及施工技术，总结了其过程中的缺陷和经验。 Abstract: Autoclaved Light-weight Concrete (ALC) board has many advantages, such as light weight, good sound insulation, heat insulation effect, good fire resistance and environmental protection. Here, the production process and construction technology of the whole ALC wallboard are introduced, and some defects and experience in these processes are summarized.

摘 要：为了研究室内外温度、湿度波动对现浇钢筋混凝土楼板非使用荷载裂缝产生的影响，在实际环境中设计建造了足尺的砖混结构模型，对室内、室外的温度和湿度及无使用荷载作用楼板开裂前后板面混凝土的应变进行了5个月的测量。实测数据分析表明，室外温度波动对楼板混凝土应变有明显影响，可以使楼板发生应力疲劳而提前开裂，但湿度波动对裂缝影响较小；室内的温度和湿度波动与室外相比，呈现明显的衰减和滞后规律；楼板边界的梁和墙体也存在收缩应变，其对楼板收缩变形的约束有限，由此而产生的楼板拉应力较小；做好建筑物外表面隔热处理对减少楼板开裂是有益的。 Abstract: A full scale mixed structure model with 2 test floor slabs was built in real environment to study the influence of temperature and humidity fluctuation on non-service-load cracks in cast-in-situ RC floor slab. Outdoor and indoor temperature, humidity and the strain of slabs concrete before and after cracking without service load were measured for five months. The test results indicate that fluctuation of outdoor temperature has obvious influence on the strain of the floor slab, which leads to stress fatigue in slab concrete, and the slab can crack easier, but the humidity fluctuation has little influence on slab cracking; comparing with the temperature and humidity fluctuation in outdoor, the temperature and humidity fluctuation in indoor show the regularity of decrement and delay; in addition, the beams and walls on the edges of floor slab has a certain of shrink, so the boundary restraint to the shrinkage of floor slab is limited and the tensile stress in slab is smaller; It is helpful to reduce cracking in floor slabs by taking better thermal insulation measures to external surface of a building.

摘 要：研究了复合型混凝土多孔保温砖的基本物理性能以及复合型混凝土多孔砖应用于村镇住宅砖混结构的热工性能，并分析了经济性能，可为丰富和发展村镇建设的建筑节能技术提供技术支撑。 Abstract: The basic physical properties of composite concrete perforated bricks and the thermal performance of brick-concrete structure for rural residence are studied. In addition, the economic performance of the composite concrete perforated bricks is analyzed, which can help to develop the energy-saving technology of rural residence.