苯并三唑的技术进展和开发应用

介绍了苯并三唑的国内外生产现状、生产方法及其开发应用前景，建议我国应该重视苯并三唑及其衍生物的开发和利用。     

住宅工程外墙渗漏的原因及防治

1．框架结构住宅工程中的填充墙，基本上为非承重的灰砂砖或小型砌块，运输与施工过程中容易破损，缺棱掉角，若在施工中使用或由于设备管安装的需要对己砌外墙进行凿打，人为地造成砌体破损，形成渗水处。     

从单颗粒模型到还原炉炉况的计算机放大研究

将从实验中得到的单颗粒团矿动力学模型动用到直接还原炉中，针对不同加碳比例，不同还原温度、不同还原气供给量进行了模拟计算，得到了一些可资参考的结果。     

Stress variation of soil surrounding tunnel and grouting reinforcement effect based on stress release

With FLAC, a criteria of stress release ratio （SRR）, i.e., about 10% of the relative difference of the ground settlement before and after the supporting system is installed, is incorporated into stress release method （SRM）. At the same time, the Mohr-Coulomb Criterion is used to analyze stress changes around the tunnel induced by excavation. It shows that the surrounding soil around shallow tunnels can be partitioned by loosened zones （unloading zones） and plastic zones among which the shear stresses in the soil are less than 10 kPa below the M-C yield line. Both types of zones are separated. With the increasing of the SRR, the areas of plastic zones and loosen zones gradually increase. The surrounding soil is equally divided into 24 regions in order to study the influence of different grouting regions on the ground settlement. The reinforcing effect of grouting can be modeled by enhancement of the soil strength around the tunnel. By the approach of the SRM, numerical analysis indicates that, in the upper area （top of the surrounding soil about 210°）, the reinforcing effect gradually decreases as the reinforcing region moves from arch springing to the vault of the crown; when reinforcing regions lie in the upside of the surrounding soil, the influence on the ground settlement is generally greater than in the lower part; at the same time, with the increase of the SRR, the influential differences are more and more obvious.     

砖坯的干燥

<正>烧结砖在生产过程中,砖坯的干燥是整个工艺流程中不可或缺的重要一环,其干燥效果在很大程度上左右着焙烧窑炉的产能和制品的各项性能指标。国内现有的几类干燥设施中以直通隧道式一次或一次半码烧为生产工艺的干燥室居多。该类干燥室与焙烧窑炉并列一排,内部宽度相等,使用焙烧窑车作为砖坯的承载工具,适宜实心、部分多孔砖、空心砖等型号的砖坯干燥,以工序少、自动化程度高、技术成熟而被广泛的应用,下面对该类干燥做个简要的分析。     

便携式干式变压器导线材料原位无损检测装置的研制

研制出一款便携式干式变压器导线材料的原位无损检测装置。介绍了该装置的整体结构和主要电路。对装置的检测能力进行测试,结果表明,该装置可在不破坏干式变压器的条件下,对导线材料实现无损鉴别。     

推广低碳技术 建造百年建筑——第二届中国房地产科学发展论坛在京开幕

<正>[本刊讯]6月28日,由中国房地产研究会、中国房地产业协会联合主办的以"推广低碳技术,建造百年建筑"为主题的"第二届中国房地产科学发展论坛"正式开幕。400余名来自全国各地的业内人士出席了此次论坛。