填充聚氯乙烯硬质塑料地砖配方与生产工艺的研究

本文系统地研究了增韧剂氯化聚烯烃(M_1)和腈基橡胶(M_2),增塑剂邻苯二甲酸二辛酯(P)以及几种不同填料对硬质PVC填充体系力学性能的影响。结果表明,增韧剂M_1、M_2能显著改善高填充PVC体系的冲击强度,其最适宜用量为5～10PHR;增塑剂P可改善高填充PVC体系的加工流动性,也能改善体系的冲击强度,其用量以5～10PHR为宜,填料的密度越大,粒径越细,填充体系的冲击强度和拉伸强度越高,加工性能也越好;随填料含量的提高,体系的力学性能和加工性能下降;填料的改性结果以F_1为最好,F_3次之,F_2最差。     

高掺量工业废渣陶瓷仿古砖坯料成形性能优化

研究了两个粉煤灰掺入量为70%的瓷质仿古砖坯的配方,配方中瘠性料分别达到了78%和83%,其中YL配方:粉煤灰70%,粘土22%,钾长石8%,烧成温度为1230℃,吸水率0.23%;ZXJ配方:粉煤灰70%,粘土17%,钾长石13%,T烧=1200℃,吸水率0.12%。但存在坯料球磨后的泥浆悬浮性不好,坯料成形性能较差的现象,选用了羧甲基纤维素钠(CMC)、氯化聚乙烯(CPE)、硅酸钠三种添加剂,分析了各种添加剂对高掺量粉煤灰坯泥性状,成形性能,干坯强度的影响,以寻求提高坯料成形性能的最佳途径。     

氧化锆对碱性耐火材料使用性能的影响

在高纯镁砂中引入适量ＺｒＯ２制取的ＡＯＤ炉用风眼砖，可显著提高制品的机热震性和抗侵蚀性能。     

浅析住宅工程砌体结构裂缝的防治

本文针对住宅工程砌体结构常见裂缝的特征、产生原因进行了分析 ,并提出了防治措施 ,旨在控制砌体裂缝的产生 ,保证住宅结构安全及其使用功能。     

大气污染源砖瓦厂的排氟量计算

根据实测数据和理论分析,提出砖瓦厂烟囱的排氟量与烧砖时氟的释放量之比的计算概念,求得单位砖产的最大排氟量约为文献值的1/5.3,由此表明:在杭嘉湖蚕桑区内,砖瓦和水泥两产业的最大排氟量大致相近,对大气氟污染同居于支配地位,故对两者应取并举的治氟方针。     

中西方传统建筑用砖之比较

本文简要回顾了焙烧粘土砖的产生，试比较了东西方古代用砖的不同理念，并从中寻求其对于建筑设计中应用地域材料的启示。     

多层内框架砖房抗震设计若干问题探讨

本文就多层内框架砖房在水平地震作用下抗震横墙间距、外壁柱和内框架柱的计算模型 ,与有关抗震承载力计算等问题进行了分析 ,并提出作者的意见     

Long-term on-site assessment of hygrothermal performance of interior thermal insulation system without water vapour barrier

On-site assessment of hygric and thermal performance of an interior thermal insulation system on the basis of hydrophilic mineral wool is presented in the paper. The system is applied during the summer period on a brick-built house from the end of 19th century. Hygrothermal testing is done during the time period of 4 years. The reconstructed building envelope exhibits very good hygrothermal performance. The thermal resistance increases approximately two times. Water condensation is never observed inside the envelope during the whole testing period. A comparison with the previous experiment in semi-scale conditions which was performed for similar insulation system constructed during the winter season shows that the precedence should be given to the application of the system in summer period as it is more considerate to the old masonry.     

Bond Behavior of Near-Surface Mounted FRP Strips Bonded to Modern Clay Brick Masonry Prisms: Influence of Strip Orientation and Compression Perpendicular to the Strip

In this paper the results of 18 pull tests performed on clay brick masonry prisms strengthened with near-surface mounted carbon fiber-reinforced polymer (CFRP) strips are presented. The pull tests were designed to add to the existing database and investigate variables significant to masonry construction. FRP was bonded to solid clay brick masonry; FRP aligned both perpendicular and parallel to the bed joint; and in the case of FRP reinforcement aligned parallel to the bed joint, compression applied perpendicular to the strip was used to simulate vertical compression load in masonry walls. Results including bond strength, critical bond length, and the local bond-slip relationship are presented as well as a discussion on the effect of the new variables on these results.     

不经置换在焦炉煤气管道上接引的可能性

通过应用实例，探讨了从运行中的焦炉煤气管上不做气体置换接引新用户时采取的方法、安全措施及可能性．