玻璃粉粒度分布对胶凝材料性能的影响

为了给玻璃粉水泥用玻璃粉的颗粒级配优化提供理论指导,研究了不同粒度分布的玻璃粉对胶凝材料的性能影响。首先将废玻璃破碎、球磨、干筛、湿筛和沉降,获得化学组分相同、粒度分布不同的超细废玻璃粉。分别测定不同粒度分布的废玻璃粉在复合胶凝材料中的强度,运用活性因子法分析玻璃粉对复合体系贡献度。试验结果表明:复合胶凝材料的强度随着废玻璃粉掺量的增加而减少;玻璃粉颗粒细化对复合体系的强度起着积极作用;玻璃粉水泥浆水化早期时,大多数情况下玻璃粉的活性因子为负,这表明玻璃粉对复合体系的早期强度不仅不能起到增强作用,反而对复合体系的早期强度起着负面影响。     

玻璃纤维片材加固钢筋混凝土梁粘结方式的试验研究

玻璃纤维片材在我国产量大,价格便宜,但受到应用研究的限制,在结构的加固改造行业中应用较少.介绍了14根钢筋混凝土梁的试验研究情况,其中10根试验梁为抗弯加固,其余为抗剪加固.分别就不同强度混凝土与玻璃纤维片材之间的粘结情况,玻璃纤维片材的粘贴方法,粘贴层数进行了研究.结果表明,粘贴玻璃纤维片材可显著提高强度,但强度的提高并不与粘贴层数成正比.     

用pH玻璃电极法测定弱酸/碱的浓度常数

研究了用ｐＨ玻璃电极电位滴定法测定弱酸／碱浓度常数的实验方法．部分弱酸／碱ｐＫｃ的测定结果与文献值比较，相对误差基本在５％以内．离子强度不同时，测定ｐＫｃ的相对标准偏差小于１％．     

基于大刃倾角刀具的玻璃高效精密切削

各种功能玻璃在高技术领域中获得了广泛应用。但功能玻璃大都硬度高、脆性大，易在已加工表面产生裂纹和凹坑。基于大刃倾角刀具的玻璃切削是一种新的加工方法，该方法能在亚毫米级的切削深度下高效地获得无裂纹和凹坑的完整表面。研究了大刃倾角刀具切削玻璃的机理及刀具参数和切削用量对已加工表面质量的影响。研究结果表明，大刃倾角刀具切削玻璃时，表面粗糙度Ra达0.21μm，表面完整性优于传统的玻璃精磨时的表面；要获得较好的已加工表面质量，刀具参数和切削用量都存在一个较佳的取值范围。     

Influence of catalyst on structural and morphological properties of TiO2 nanostructured films prepared by sol–gel on glass

Transparent TiO2 thin films have been prepared by the sol-gel method using titanium alkoxides as precursors.Thin films were deposited on glass supports by the dip-coating technique.The TiO2 layer acts as a self-cleaning coating generated from its photocatalysis and photoinduced superhydrophilicity.The crystalline structure of TiO2 films was dominantly identified as the anatase phase,consisted of uniform spherical particles of about 14-50 nm in size,which strongly depends upon catalyst-type and heat treatment temperature.Increasing heat treating temperature can lead to an increase in crystalline size.The results indicated that the sample S.S(sample derived from sol containing sulfuric acid as catalyst) exhibits superhydrophilic nature and better photocatalytic activity,which can be attributed to its higher anatase content and lower crystalline size.Morphological studies,carried out using Atomic Force Microscopy(AFM),confirm the presence of crystalline phase with such a grain size and low surface roughness.Thus,the applied films exhibiting high photocatalytic activity,superhydrophilic behavior,and low surface roughness can be used as an efficient self-cleaning coating on glass and other optical applications.     

逆反射材料中玻璃微珠的协同效应

半球镀膜玻璃微珠是逆反射材料的基本反光单元,目前的研究主要局限于单个微珠的属性,很少涉及到逆反射过程中相邻微珠间的协同作用.实际上协同作用的存在使整个膜的反光属性不同于单个微珠的情况.本文全面分析了逆反射光线传输过程,并结合逆反射材料的结构特点设计开发了玻璃微珠阵列结构逆反射材料的数值计算程序,计算了逆反射效率随微珠排布密度、材料折射率、光线入射角等参数的变化.结果表明,微珠阵列的协同作用表现为倾斜效应和遮挡效应.前者严格遵循倾斜因子ε=1/cosθ的定量规律,而后者的作用可通过遮挡因子来定量表示.入射角较小时主要体现为倾斜效应,而入射角较大时倾斜效应和遮挡效应两者共同发挥作用.     

玻璃纤维纱织造过程的耐磨性研究

详细阐述了玻璃纤维的织造性能。通过对玻璃纤维纱织造过程的耐磨性试验，得出玻璃纤维纱的耐磨性能与玻璃纤维织物质量之间的影响关系。     

钢筋新型代用材料FRP筋粘结锚固性能试验研究

对混凝土结构中的钢筋新型代用材料ＦＲＰ筋在周围不同环境介质中的粘结锚固性能进行了试验研究。通过对３６个ＦＲＰ筋混凝土和钢筋混凝土所进行的立方体试件中心拔出试验研究,得出了ＦＲＰ筋在混凝土、水泥浆和环氧树脂中的粘结锚固性能。试验结果表明：ＦＲＰ筋在周围不同介质中的粘结锚固性能与钢筋在相应介质中的粘结锚固性能相似;螺旋ＦＲＰ筋的粘结锚固性能要明显高于光面ＦＲＰ筋。     

Evaluation of Correction Algorithm for the Reflectance Measured with Optical Glass

The proposed algorithm for reflectance measured with optical glass has been verified with materials of various forms. The reflectances measured with optical glass ( raw), without glass (true) and corrected by the algorithm are compared. The results show that the corrected reflectance agrees very well with true one and their color differences fall below the acceptable limit, which indicates the validity of the correction algorithm. The algorithm could be used not only for fiber-forming materials, but also for powder-forming, granulate-forming, etc.     

The Elegy of Women: An Comparative Analysis of Laura and Blanche

The paper attempts to analyze the two main women characters in Tennessee Williams’ two plays The Glass Menagerie and A Streetcar Named Desire.Laura in The Glass Menagerie and Blanche DuBois in A Streetcar Named Desire represent the delicate and fragile southern female images.They stand as the images of Williams’central theme: the destructive impact of society on the sensitive female.