中间相沥青粘结剂结合MgO型块烧成试验

本文研究了以中间相沥青粘结剂结合的ＭｇＯ型块烧成条件对型块强度的影响，找出了最佳型块烧成条件，并进行了与酚醛树脂粘结剂的对比试验，表明中间相沥青结合的型块具有较好的高温强度．     

铸渗技术在制砖机模具生产中的应用

对改善铸渗层质量进行了理论分析并提出了具体的工艺措施。生产结果表明，铸铁渗铬制砖模具的使用寿命是变质铸铁模具的８～１０倍     

吉林工学院教学实验楼结构加层改造

整体式外套框架加层中新旧结构的相互关系是贯彻结构设计思想的关键。在一栋教学楼的加层改造中 ,采用了一种新的处理新旧结构关系的连接构造形式 ,保证新加层的竖向荷载不传递给原结构 ,而在水平地震作用下两者又能共同受力 ,从而改善了外套框架和加层后整体结构的抗震性能。同时正确的结构设计思想避免了对原结构的大规模加固处理 ,缩短了工期 ,获得了良好的经济效益     

钢筋水泥砂浆套梁在砖墙开洞中的设计和应用

通过一改造工程实例 ,介绍了钢筋水泥砂浆套梁作为砖墙开洞的洞口置换梁的设计和应用方法 ,可以作为类似工程改造时参考     

Limestone dust and wood sawdust as brick material

The majority of abandoned limestone powder wastes (LPW) and wood sawdust wastes (WSW) is accumulated from the countries all over the world and causes certain serious environmental problems and health hazards. This paper presents a parametric experimental study which investigates the potential use of WSW–LPW combination for producing a low-cost and lightweight composite as a building material. Some of the physical and mechanical properties of concrete mixes having high level of WSW and LPW are investigated. The obtained compressive strength, flexural strength, unit weight, ultrasonic pulse velocity (UPV) and water absorption values satisfy the relevant international standards. The results show that the effect of high-level replacement of WSW with LPW does not exhibit a sudden brittle fracture even beyond the failure loads, indicates high energy absorption capacity, reduces the unit weight dramatically and introduces smother surface compared to the current concrete bricks in the market. It shows a potential to be used for walls, wooden board substitute, economically alternative to the concrete blocks, ceiling panels, sound barrier panels, etc.     

闪速炉炉墙砖衬与炉壳相离现象的探讨

对金川闪速炉的炉墙砖衬与炉壳(或立水套)之间相离现象产生的原因进行了分析,并提出改进措施。     

有限元分析法与砖体烧成时间关系的探讨

阐述有限元分析法这一项计算机技术用于砖体烧成领域的具体方法，并构造了砖体模型，利用此模型探讨了各项参数对砖体烧成时间可能造成的影响，探讨了进一步研究的发展趋势。     

砖砌体建筑体外预应力抗震加固技术研究

针对城镇既有砖砌体建筑抗震性能较差的问题,提出了一种适合多层砖砌体房屋的抗震加固新技术,即采用竖向无粘结预应力筋对砌体墙体进行加固,从而改善墙体的抗震性能,提高房屋的整体抗震能力。为了解该技术的加固效果,完成了两批共17片墙体构件的拟静力试验研究和一栋2层足尺房屋模型的拟动力试验研究。墙体构件的试验研究结果表明,该项加固技术可以大幅度提高砖砌体墙体的抗裂能力、受剪承载力和延性。房屋模型的拟动力试验研究则进一步表明,采用该项技术加固后,抗震设防烈度不足8度的房屋,在模拟9度罕遇地震的拟动力作用下基本保持弹性,抗震能力显著提高。在试验研究的基础上,提出了预应力加固砌体墙体的受剪承载力的计算方法。该技术在北京市怀柔区某多层办公建筑的实际应用情况表明,其具有施工工艺简单、工期短、成本低等优势     

利用铜尾矿制蒸养标准砖

利用铜尾矿、磨细矿渣、粉煤灰，在碱性复合激发剂存在的情况下，通过湿热养护工艺制成承重标准砖。实验采用正交试验法进行工艺参数优化，以此为基础建立了养护制度，产品抗压强度达到18．1MPa，抗折强度达到3．6MPa，具有良好的抗冻融性和稳定性。并对影响产品性能的几个主要因素进行了讨论。     

Limestone dust and glass powder wastes as new brick material

Large amounts of glass and limestone wastes are accumulating all over the world. Disposal of Limestone Powder Waste (LPW) and Waste Glass Powder (WGP) is a rapidly growing problem for some municipalities, so research for alternative utilization of these disposals is needed. In this respect, the objectives of this study are to investigate both physical and mechanical properties of samples containing LPW–WGP combinations for producing as new building brick material. An experimental approach to develop a new brick material including mainly LPW, a small quantity of Portland cement and WGP is presented. The LPW, WGP and cement are mixed, humidified and compacted under high pressure in the moulds. The values of compressive strength, flexural strength, unit weight, water absorption, abrasion resistance, freezing–thawing (F-T) resistance and thermal conductivity satisfy the relevant international standards and introduces smoother surface compared to the current concrete bricks in the market. The process undertaken can easily be applied within the current brick plants. The WGP used in LPW remarkably improves the compressive strength, flexural strength, modulus of elasticity, abrasion resistance, F-T resistance, and thermal conductivity of LPW brick samples produced in this study. The test results indicate that the samples containing LPW–WGP combinations provide better results for a potential of producing economical new brick materials.