離子擴散系數 的英文怎麼說
中文拼音 [lízikuòsǎnxìshǔ]
離子擴散系數
英文
ionic diffusion coefficient- 離 : Ⅰ動詞1 (離開) leave; part from; be away from; separate 2 (背離) go against 3 (缺少) dispens...
- 子 : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
- 擴 : 動詞(擴大) expand; enlarge; extend
- 散 : 散動詞1. (由聚集而分離) break up; disperse 2. (散布) distribute; disseminate; give out 3. (排除) dispel; let out
- 系 : 系動詞(打結; 扣) tie; fasten; do up; button up
- 數 : 數副詞(屢次) frequently; repeatedly
- 離子 : [物理學] ion
- 系數 : [數學] coefficient; ratio; modulus; quotient; factor
-
Chloride ion permeability coefficient of c20 concrete and c30 concrete reduces after concrete surface is treated by reinforcing agent, and soakage reduced too. so the impermeability and carbonization resistance of concrete, especial c20 concrete, increase
塗刷耐久性增強劑后, c20和c30混凝土的氯離子擴散系數降低,吸水量減小,抗滲和抗碳化性能提高,其中,對c20混凝土的效果更為明顯。The effects of the fabrication conditions on the crystal structure, grain size, micromorphology and electrochemical performance of these materials have been studied in depth. the reaction mechanism of the low - heating solid - state reaction method has also been investigated. in addition, a novel electrochemical method ( rpg method ) based on the concept of " ratio of potentio - galvano - charge capacity " has been for the first time developed to determine the diffusion coefficient of lithium - ion within insertion - host materials on the basis of the spherical diffusion model
本論文較系統地考察了低熱固相反應法合成鋰離子電池正極材料的可行性問題,研究了工藝條件對材料的晶體結構、晶粒尺寸、微觀形貌及電化學性能等的影響,探討了低熱固相反應的機理,並通過引進「恆壓-恆流充電容量比」的概念,給出了一種測定鋰離子嵌入脫出固相擴散系數的新方法。The voltage of lithium - intercalation reaction, impedance and structural stability of intercalation - type cathode material were analysed and calculated. theoritical results show that the reaction voltage depends on the content of lithium and the bond energy, and that the key ways to lower the electrode impedance are to increase the electronic conductivity of the electrode and the diffusion coefficient of lithium ion in the host and to decrease the size of powder. in addition, the thermal stability of lithium - insertion structure can be improved by using crystallographic co - lattice theory and doping treatment
本文從嵌入式陰極材料的嵌鋰反應的電壓、阻抗及結構穩定性的分析和理論計算著手,得到了電壓取決于基體中各種離子間的鍵能及鋰含量、降低電極阻抗的關鍵是提高電子型導電性和li ~ +在基體中的擴散系數及減小粉末粒度的理論依據及其利用晶體的共格原理和摻雜改性的方式來提高材料嵌鋰結構的熱穩定性的設計思路。Linear chloride binding and time - dependent diffusivity are taken into account in this approach
該方法考慮了混凝土對氯離子的線性固化,以及氯離子擴散系數在服役期間的時變性。Permeability of concrete and its correlation with chloride ion diffusion coefficient under different test conditions including water pressure method and tension method are studied
本課題主要研究混凝土在水壓法及張力法試驗條件下水在混凝土中的滲透行為以及同氯離子擴散系數相關性。Water pressure method can distinguish permeability of concrete with different strength or air content, and penetration length or permeability coefficient has good correlation with chloride ion diffusion coefficient. tension method also can distinguish permeability of different concrete, but it has discreteness compared with water pressure method
通過研究水壓法對于不同滲透性混凝土發現:水壓法能夠較好的區分不同強度、不同含氣量的混凝土的滲透性,滲透高度及滲透系數與氯離子擴散系數的相關性較好。The diffusion coefficient of bovine serum albumin ( bsa ) was studied by dynamic light scattering in different ionic strength solutions
利用動態光散射技術研究了牛血清白蛋白分子的擴散系數在不同強度離子溶液中隨著蛋白分子濃度變化的規律。Meaning of ions diffusion coefficient in sapphire diffusion heat treatment
離子擴散系數在藍寶石擴散熱處理改色中的作用( 4 ) a nonlinear model including the loss of cross - sectional area of corroded rebar, the reduction of mechanical properties of corroded steel and the degradation of the bond strength between concrete and corroded rebar was presented
氯離子擴散系數是一個隨時間、擴散深度和氯離子濃度變化的變量。 ( 4 )建立了考慮銹蝕鋼筋截面面積減小、力學性能下降以及混凝土與鋼筋之間粘結性能退化的非線性模型。Water cement ratio and mixing fly ash or slag into concrete effect on ability of resisting chloride penetrating that are considered in the model. the effect of environment that include temperature, relative humidity and cumulating of surface chloride concentration of concrete are also considered. moreover, chloride diffusion changing with time is included in this model as well as
模型中考慮水灰比和混凝土配合比(摻入不同量的粉煤灰和礦渣)變化對混凝土抵抗氯離子侵蝕能力的影響,同時考慮溫度、相對濕度和表面氯離子濃度累積變化等環境因素對氯離子侵入混凝土過程的影響,以及氯離子擴散系數隨時間的變化。Thus, the conclusion is drawn : when the diffusion coefficient of cf is invariable and the diffusion time is under a certain range, the beginning corrosion time of the steel in the corner of the rectangular section is independent of the size of rectangular section ; ( 4 ) through the numerical value calculation of rectangular section, the law is found of the influence on modifying coefficient of rectangular section of the thickness of protection layer of concrete and diameter of the steel and the thickness of cf on the surface of concrete, based on which practical calculating method of beginning corrosion time of the steel in the corner of rectangular section is set up
從而得到結論:在氯離子擴散系數一定的情況下,在一定時間范圍內,矩形截面邊角區域鋼筋的初始銹蝕時間不依賴于矩形截面的截面尺寸; ( 4 )通過矩形截面邊角區域鋼筋初始銹蝕時間的計算,分析了保護層厚度、鋼筋直徑、混凝土表面氯離子濃度對修正系數的影響,並在此基礎上建立了氯離子侵蝕下矩形截面邊角區域鋼筋初始銹蝕時間的實用計算方法。The concrete used in testing bridge is monitored and some performance at definite age including compressive strength, splitting fensile strength, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure by mercury porosimetry are tested. these performances are compared with that of concrete which designed by traditional method. the results show that mechanical properties of concrete designed by high durability concrete proportion and traditional method meet require ment at any age, however, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure of the former are better than the latter, so high durability concrete is economic benefit
對試驗橋用混凝土的質量進行監控,並成型試件測量所需齡期內的抗壓強度、劈裂強度與抗凍融、抗鹽凍、氯離子擴散系數( dcl - ) 、抗碳化等耐久性能指標及孔結構,並與傳統混凝土進行對比研究,結果表明:高耐久性混凝土及按傳統配合比設計的混凝土的力學性能均能滿足相應齡期的要求,但前者的抗凍融性能、抗鹽凍性能、抗碳化性能、 dcl -和孔結構明顯優於後者,並具有明顯的社會經濟效益。Polypropylene fiber reinforced concrete ( ppfrc ), steel fiber reinforced concrete ( sfrc ) and mixed fiber reinforced concrete used in plate of bridge are studied. the performances of concrete with different fiber content, such as compression strength, tension strength, splitting tensile strength, frost resistance, shrinkage, early shrinkage and chloride ion diffusion coefficient ( dcl - ) are studied
分別研究了改性聚丙烯纖維、鋼纖維和混摻纖維對橋面板用混凝土性能的影響,研究了不同纖維摻量混凝土的抗壓強度、抗折強度、劈裂強度及抗凍性、干縮性能、早期開裂和氯離子擴散系數進行了試驗研究。Many factors regarding the modifying coefficients of circular and rectangular section are analyzed : ( 1 ) it is theoretically proved that the diffusion coefficient of cl - in concrete is dependent of modifying coefficients ; ( 2 ) through analysis of the results of numerical value calculation, it is discovered that the relation between the modifying coefficients and the thickness of protection layer of concrete is linear, from which the function expression of these two variables is gain ; at the same time, the influence on modifying coefficient of the radius of circular section and the thickness of cl - on the surface of concrete ; based on these, practical calculating method of beginning corrosion time of steel of circular section is set up ; ( 3 ) to rectangular section, the diffusion of cf in concrete is two - dimension diffusion
討論了影響矩形截面以及圓形截面修正系數的因素: ( 1 )從理論上證明了氯離子在混凝土中的擴散系數與修正系數無關; ( 2 )通過圓形截面數值計算結果的分析,發現圓形截面修正系數與保護層厚度基本成線性關系,並建立了二者之間的聯系;分析了圓形截面半徑、混凝土表面氯離子濃度對修正系數的影響,從而建立了圓形截面鋼筋初始銹蝕時間的實用計算方法; ( 3 )在矩形截面氯離子侵蝕下,混凝土處於二維擴散狀態。本文通過計算分析,證明二維擴散的影響區域從邊角開始向中間逐步擴散,並證明了二維擴散影響區域依賴于氯離子擴散系數與氯離子擴散時間的乘積。On the basis of the theory of reinforcement corrosion caused by chloride, a chloride diffusion model considering the time - dependent quantities of diffusion coefficient and surface chloride concentration for predicting the content of chloride in concrete is presented in this paper, at the same time, the determination of model factors are analyzed
論文以氯離子對混凝土結構的侵蝕機理為基礎,在不同氯腐蝕環境下,建立了考慮氯離子擴散系數的時間依賴性及其它因素影響的改進氯離子擴散模型,並對模型參數的選取和確定進行了深入討論。For pc, the pulse diffusion layer only depends on the diffusion coefficient of cations and the pulse length, is not related to the concentration of the mass
單脈沖擴散層的厚度僅取決于陽離子擴散系數和脈沖導通時間,與溶液本體濃度無關。6. the durability of concrete structures resisting chloride diffusion in different water cement ratio and different contents of fly ash and silica was analyzed and durable life was predicted based on the results of the test, which will be helpful to preparation of high performance concrete ( hpc ) as well as durability design and assessment of concrete structures
系統地研究了低水膠比及摻加粉煤灰、硅灰的高性能混凝土的電滲透性和氯離子擴散系數,分析了水膠比以及粉煤灰和硅灰等活性集料對混凝土結構抵抗氯離子侵蝕的耐久性能的影響,並對高性能混凝土結構抗氯離子侵蝕的耐久壽命進行了預測,為氯鹽污染環境下高性能混凝土的配製以及混凝土結構耐久性評估與設計提供參考。Mix mineral additive into concrete has great effect on the pore structure, especially the addition of sodium sulfate coarsening the pore structure enormously, and increase the total porosity. after mixing sodium sulfate, the chloride ion diffusion coefficient of air entraining concrete increased, impermeability reduced ; but mixing sodium nitrite and sodium chloride can
Na _ 2so _ 4摻入后,引氣混凝土的氯離子擴散系數增大,抗滲性降低;而nano _ 2和nacl能夠細化水泥石的孔結構,對混凝土的抗滲性有利,但提高幅度不大。Statistic relationship between water / cement ratio and chloride diffusion coefficient was gained by experiment, based on which the influence of concrete cover, water / cement ratio and design reference period on structural reliability was discussed. 2. there are two models provided to predict remaining service life
通過試驗確定了水灰比與氯離子擴散系數之間的統計關系,在此基礎上分析了海洋環境下混凝土保護層厚度、水灰比、設計基準期等與耐久性有關的非承載力因素對設計基準期內結構可靠性的影響。The relationship of chloride ions diffusion coefficient with time conforms to power function according to chloride ions " content in each layer of different concrete. based on the relationship, a mathematical model equation of chloride ions diffusion in concrete was deduced as follow : test results show that chloride ions diffusion coefficient decreases with the water / binder ratio reducing. when fly ash or slag is properly blended, chloride ions diffusion coefficient will also drop
通過取樣測得不同技術條件混凝土各層氯離子含量,得到氯離子擴散系數與時間成冪函數關系,據此推出氯離子在混凝土中擴散的數學模型式為:試驗結果表明,氯離子的擴散系數隨著水膠比的減小而降低,適當地摻入粉煤灰或礦渣粉可以有效地降低氯離子的擴散系數。分享友人