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热拌沥青混合料耐流动性的改善
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作者 魏如喜 《天津市政工程》 1998年第2期32-35,共4页
对沥青混合料不同级配组成、设计和施工的主要因素进行了分析,提出了现行沥青混合料耐流动性改善的设计和施工方法,可供国内道路工作者借鉴和参考。
关键词 热拌沥青混合料 耐流动性 设计 施工 路面混合料
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拥有良好加工能力的高性能低烟无卤湿气固化交联护套聚合物的开发
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作者 秦殊刚(编译) 《天津光电线缆技术》 2018年第3期11-17,共7页
本文章介绍了适合广泛电缆的护套性能要求的低烟无卤湿气固化材料的开发。简短回顾接近40年的发展历史,并展示材料技术近期的重大突破,即充分实现最初目的以满足现代需求的湿气固化技术。概述了全部开发过程的概念,并提供了部分样品的数... 本文章介绍了适合广泛电缆的护套性能要求的低烟无卤湿气固化材料的开发。简短回顾接近40年的发展历史,并展示材料技术近期的重大突破,即充分实现最初目的以满足现代需求的湿气固化技术。概述了全部开发过程的概念,并提供了部分样品的数值,显示了机械性能、物理性能、耐低温和耐流动等性能的平衡是可以取得改善的。选择从工业产品上或挤出在各种电缆护层上剥下的测试样品,进行了全套电缆测试的数据证明有满足物理性能、机械性能、低温和耐流动性可以很好平衡的途径。最后,提供了全部的耐火测试数据。随着LSZH电缆在北美地区的越来越广泛的使用,这个开发对新型电缆的设计和未来聚合物的发展都提供了一个可靠的平台。 展开更多
关键词 LSZH 低烟 无卤 零卤素 耐流动性 冷弯曲 冷冲击 UL1277 FT4
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Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment 被引量:2
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作者 潘崇根 林明峰 +3 位作者 魏冬 耿健 毛江鸿 金伟良 《Journal of Shanghai Jiaotong university(Science)》 EI 2017年第5期541-548,共8页
This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant en... This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment. © 2017, Shanghai Jiaotong University and Springer-Verlag GmbH Germany. 展开更多
关键词 Compressive strength Corrosion Corrosion inhibitors Durability Fly ash High performance concrete MORTAR SLAGS
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Performance Modelling of Patient Flow Scheduling Through a Formal Method
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作者 陈潇 THOMAS Nigel 丁杰 《Journal of Shanghai Jiaotong university(Science)》 EI 2017年第1期66-71,共6页
Smart environment is being used in many areas to deliver more services to individuals in a physical space, such as a hospital. In the UK, the National Health Service(NHS) provides free and high quality healthcare serv... Smart environment is being used in many areas to deliver more services to individuals in a physical space, such as a hospital. In the UK, the National Health Service(NHS) provides free and high quality healthcare service for all residents. Smart hospital environment is able to support NHS and provide more convenience. Patient flow scheduling is a crucial section in a smart hospital environment. Smart hospital environment aims to provide a smart environment in the hospital to facilitate individual experience and improve the quality of healthcare service.First of all, this paper investigates a real world patient flow scenario of a hospital in the UK and models a general scheduling scheme based on the scenario using a compositional formal approach, i.e. performance evaluation process algebra(PEPA). This scheduling scheme uses an easy-implemented solution(the grouping scheme) to reduce the waiting queue in the hospital. Secondly, fluid flow analysis is used for the performance analysis by generating a set of ordinary differential equations(ODEs) in terms of the PEPA model. 展开更多
关键词 SCHEDULING performance valuation patient flow performance evaluation process algebra (PEPA) ordinary differential equations (ODEs) TP 302 TP 391 A
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