玻璃纤维布加固的钢筋混凝土梁试验研究与抗弯承载力计算

对9根玻璃纤维布加固的钢筋混凝土梁和3根对比梁进行了抗弯性能试验研究. 试验中考虑了配筋率、加固量、剪跨比与混凝土强度等级4个参数. 试验结果表明, 经玻璃纤维布加固的钢筋混凝土梁抗弯承载力有显著提高; 混凝土强度、配筋率、加固量对极限荷载有显著影响; 剪跨比对加固梁的破坏形态有影响. 根据不同的破坏模式, 提出了抗弯承载力计算方法.     

浇注式沥青混合料高温性能研究

车辙是正交异性钢桥面沥青混凝土铺装主要病害之一 .采用汉堡轮辙试验机 ,提出了适宜于德国、考察浇注式沥青混合料高温性能的试验条件 ,测试和比较了不同浇注式沥青混合料的高温性能 .聚合物改性沥青混合料具有较高的抗车辙能力 .滞留时间和拌和频率对浇注式沥青混合料的性能有明显的影响     

铁电性液晶高分子及其在液晶显示中的应用

综述了铁电性液晶高分子材料的研究情况，包括其合成、分类、性能及其在显示领域的应用，并对其现状作了简单介绍。     

阳离子高分子SOP的性能研究初探

用溶液法合成阳离子高分子SCP，简略介绍了其制备方法；对SCP的性能做了一系列测定：用特性粘度法测定了SCP的分子量，其范围在30万-50万；对其水溶液的粘度、Zeta电位、电导率、表面张力以及水分散体系中阳离子高分子微粒的粒径分布进行了研究。发现这种水溶性阳离子高分子具有很好的抗盐性。     

表面工程在口腔修复材料中的应用

以钛及钛合金．陶瓷和高分子材料为例．综述了临床广泛应用的口腔修复材料采用的表面技术，阐述了不同表面技术的应用的优缺点．在此基础上，对今后的工作提出了一些建议。     

通识课程“高分子世界美学赏鉴”的教与学

通识课程“高分子世界美学赏鉴”从“美”的视角出发设计教学内容,将人文美学融入理科教学,讲述高分子科学的发展史,介绍高分子的新研究、新发现;同时,在教学方法和考查方法上也做了创新和改进,将知识点的教、学、考穿插在一起,探索并构建新型自然科学类通识课教与学的模式。     

Shear strengthening of pre-damaged reinforced concrete beams with carbon fiber reinforced polymer sheet strips

This paper presents the results of an experimental investigation on the response of pre-damaged reinforced concrete (RC) beam strengthened in shear using applied-epoxy unidirectional carbon fiber reinforced polymer (CFRP) sheet. The reasearch included four test rectangular simply supported RC beams in shear capacity. One is the control beam, two RC beams are damaged to a predetermined degree from ultimate shear capacity of the control beam, and the last beam is left without pre-damaged and then strengthened with using externally bonded carbon fiber reinforced polymer to upgrade their shear capacity. We focused on the damage degree to beams during strengthening, therefore, only the beams with side- bonded CFRPs strips and horizontal anchored strips were used. The results show the feasibility of using CFRPs to restore or increase the load-carrying capacity in the shear of damaged RC beams. The failure mode of all the CFRP-strengthened beams is debonding of CFRP vertical strips. Two prediction available models in ACI-440 and fib European code were compared with the experimental results.     

低温等离子体处理对高吸水性树脂吸水特性的影响

对高吸水树脂（SAP）在真空状态下（〈1 mmHg）进行了低温等离子体处理,分析结果表明,经过处理的树脂吸水率在较短时间处理时有所下降,但吸液率上升,在较长时间处理时,吸水率和吸液率均有不同程度的增加。在一定时间范围内,开放环境中的保水力有所增加。低温等离子体处理后,对甘草种子的毒性减少。     

掺杂法提高聚合物电导率的蒙特卡洛法讨论

掺杂法提高聚合物电导的机理是考虑导电填充物和高聚物所构成的不均匀体系中，导电颗粒间会形成链式组织或聚集体组织而提高导电性能，在此过程中导电颗粒有相互作用。本是采用蒙特卡洛法对掺杂高分子材料的电导特性作了研究，研究结果与实验符合较好，并得出存在剧变特征的所谓绝缘体－金属相变特性的计算结果。     

Retrofitting of RC Slabs Against Explosive Loads

With the increase of terrorist bomb attacks on buildings, there is a need to develop advanced retrofitting techniques to strengthen structures against blast loads. Currently, several guidelines including an Australian version for retrofitting reinforced concrete (RC) structures are available for the design of retrofitting systems against seismic and monotonic loads using steel or fibre reinforced polymer (FRP) plates that can be either adhesively bonded to the surface or near surface mounted to the concrete cover. However, none of these guidelines provide advice suitable for retrofitting structures subjected to blast loads. In this paper, numerical models are used to simulate the performance of retrofitted RC slabs subjected to blast loads. Airblast pressure distributions on the surface of the slabs estimated in a previous study are used as input in the analysis. A material damage model developed previously for concrete and an elastoplastic model for steel bars are employed in this research for modelling reinforced concrete behaviour due to explosive loads. The material models and blast loading are coded into a finite element computer program LS-DYNA3D to do the analysis. With the numerical model, parametric studies are conducted to investigate RC slabs retrofitted by either externally bonded or near-surface mounted plates or GFRP sheets subjected to blast loads. Discussion is made on the effectiveness of the retrofitting system for RC slabs against blast loads.