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Abstract: An improved design method of pervious concrete was proposed to lower the deviation between the designed and actual porosity and maintain both mechanical property and permeability of pervious... structures; permeability Cite this article as: BA Ming-fang, QI Xin-yu, ZHENG Yu-hang, HUANG Guo-yang, HE Zhi-min, LIU Jun-zhe. Improved designed method of pervious concrete based on optimal volume ratio......
熔体初生相晶粒尺寸的大小有对应关系. 关键词:初始组织；组织演变；半固态；充型过程 中图分类号:TG 146.4 文献标识码:A Effect of initial structure characteristic on evolution of primary phase in mold filling TAN Jian-bo1..., China; 2. School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China) Abstract: Semi-solid alloy melt with different initial structure prepared......
Compressive Strength and Permeability of High-performance Concrete吕建福School of Transportation Science and Engineering, Harbin Institute of Technology摘 要:The compressive strength, chloride penetration resistance and microstructure of two high-performance concretes were examined under three curing conditions. Curing conditions include standard curing (SC......
The Chloride Permeability of Persulphated Phosphogypsum-Slag Cement Concrete黄有强1,2,LU Jianxin1,2,CHEN Feixiang1,水中和11. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology2. China Railway Bridge Science Research Institute, Ltd摘 要:The chloride permeability and microstructure of persulphated phosphogypsum-slag......
透性[J]. 中南大学学报(自然科学版), 2014, 45(6): 2021-2028. CHANG Shuai, XU Riqing, LI Xuegang, et al. Permeability of organic soil treated with two composite stabilizers[J]. Journal of Central South University......
) Abstract: In light of the working mechanism of the diversion tunnel at runtime, the whole process of runtime was divided into three stages: the initial gap closure stage with steel lining bearing... method, and a calculation method of permeability coefficient and seepage load considering the effect of stress and damage were put forward. From all the above, a finite element calculation program......
Efect of Ball Scribing on Relative Permeability of Grain-oriented Electrical SteelHao WANG1,2,Changsheng LI1,Tao ZHU1,Nkwachukwu Chukwuchekwa2,Ban CAI1,Gang HUO1,31. State Key Laboratory of Rolling and Automation, Northeastern University2. Wolfson Centre for Magnetics, Cardif University摘 要:Efect of ball scribing on relative permeability of conventional......
Relation of Damage Variable and Gas Permeability Coefficient of Concrete under Stress唐官保1,2,姚燕1,2,WANG Ling2,CUI Suping1,CAO Yin21. College of Materials Science and Engineering, Beijing University... to concrete specimens using test rigs designed by RILEM TC 246-TDC. Ultrasonic wave velocity and autoclam permeability system were used to characterize the damage variable and gas permeability coefficient......
and permeability spectra of Y2Ti2O7/Fe cermet F40的磁谱是典型的弛豫型,在整个测试频段中磁导率始终低于1,表现出抗磁性,并且其磁导率随着频率升高而不断下降,在1GHz时已经十分接近于0,并且降低的趋势没有减弱.可以推测若磁场频率大于1GHz一定值,F40试样磁导率有可能成为负值,从而实现双负性.这是由于F40试样中Fe含量较高,作为具有一定导电能力的... G, LIU X F, ZHANG X H. Preparation of iron networks hosted in porous alumina with tunable negative permittivity and permeability[J]. Advanced Functional Materials, 2013, 23(33): 4123-4132. [9] SUN K......
The Effect of Surface Etching and Dation on the Permeability Spectrum of Nanocrystalline Fe85-xCoxNb7B8 Ribbon毛兴宇摘 要:Etching and oxidation were adopted to improve the frequency dependence of permeability of nanocrystalline Fe85-xCoxNb7B8 ribbons. The effect of etching and oxidation on the permeability spectrum of nanocrystalline Fe85-xCoxNb7B8 ribbons......
