滲蝕度 的英文怎麼說
中文拼音 [shènshídù]
滲蝕度
英文
permeability-
The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological
分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象,依據astm標準及國際通用文物保護研究方法與評估準則相結合,通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定,及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響,對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。The thickening may be synthetically aroused by many factors, because of the lower maturation of source rock at forepart, the rock tar is thicker, and then many other factors impel it, which include the hydrocarbon dissipation at the process of oil and gas migration, biodegradation and bathing oxidation induced by gravity induced centripetal flow recharged by meteoric water at the basin uplift period and etc
稠油成藏則由多因素綜合作用造成,由於早期源巖成熟度較低,原油本身較稠,而油氣運移過程中輕質組分散失、生物降解和盆地抬升剝蝕階段大氣水下滲所導致的水洗氧化等作用則使其進一步稠化。The gullies are formed by the processes of infiltration - interflow - collapses. ( 2 ) in the slope with sand - loess, the major factors of water erosion are the rainfall intensity and rainfall amount of annual first rainfall. ( 3 ) in the region, the evolution processes of slope gully system results from alternative actions of sand deposition and water erosion
( 1 )有片沙覆蓋的斜坡小區,徑流量少,但徑流含沙率大,坡溝的形成過程是:垂直滲流坡地潛流崩塌; ( 2 )在沙黃土斜坡小區,每年春末夏初降雨的強度及降雨量是決定坡面產沙量的關鍵因素; ( 3 )該區坡溝系統的形成發育是風沙沉積、風蝕與水蝕交替作用的結果。With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion
研究結果表明:通過對rpc各組分摻量變化的研究,可以找到rpc的最優配合比;試件成型后的熱養護制度對rpc的性能影響巨大; rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況,剛纖維的摻入可以大幅改善rpc的韌性; rpc在成型后存在較大的收縮,而其中的化學收縮要遠遠大於乾燥收縮; rpc具有很強的抗氯離子滲透性能,漿體的密實度很高;通過x射線衍射實驗,可以發現rpc的膠凝體中ch晶體已經幾乎不存在,膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成;在抗溶液侵蝕的實驗中,摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件,酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用,但是機理各有不同。The research showed that pam could improve soil structure, and greatly increase the stabilization of soil aggregates, so soil crust development would be decreased. fifthly, soil grain that controls rainfall splash erosion was obtained, the influence of soil clay was very great during initial stages of rainfall. with rainfall going on, soil coarse sand and fine sand would control the splash erosion
五、控制土壤濺蝕的主要土壤粒級:在降雨初期土壤的的粘粒對濺蝕速率的影響較大,隨著降雨歷時的延長,土壤中的細砂和粗砂成為濺蝕速率影響較大的因子;六、對土壤濺蝕影響較大的土壤結構特徵因子:降雨5分鐘時,土壤的滲透系數對濺蝕速率的影響較大,隨著降雨的繼續進行,土壤的團聚度一直對土壤濺蝕速率影響較大。The liquid - gas method is improved based on the above methods, overcoming the defects of gbj82 - 85. using the liquid - gas method, permeability condition of concrete can be tested and indicated quickly, efficiently, and the influences on concrete of alkali - aggregate reaction, sulfate attack, carbonization, steel rust, freeze and thaw can be inflected indirectly. it is significant on the research and monitor on the durability of concrete
溶液氣壓法是在上述方法之上進行改進提高的,克服了國標gbj82 - 85方法中的許多不足之處,能夠多角度、快速、高效、真實、準確地再現現場混凝土的滲透情況,並且能間接反映堿-骨料反應、鋼筋銹蝕、碳化、硫酸鹽侵蝕及凍融破壞的影響,對混凝土耐久性的監測與研究具有重要意義。An acellular dermal matrix was prepared from allogenic skin by removing epidermis with a hyperosmotic salt solution and cross - linking with glutaralaldehyde, then clear away acellular components in dermis with naoh - maceration. the light and sme observation of the acellular dermal matrix revealed that the epidermis and cellular component in dermis were eliminated
本研究共分四部分:第一部分無細胞真皮基質的制備用高滲鹽除去異體皮膚的表皮細胞,經戊二醛交聯后以低濃度naoh消蝕以除去真皮中的所有細胞成分,得到無細胞真皮基質。Observation of drilling cores and casting - sections and the characters of pore structures and permeability of the matrix of the lower - ordovician carbonate in comparing with the lower limit of a reservoir for matrix reveal that the porosity, permeability, maximum pore diameter, saturation and median throat diameter in the matrix with undeveloped fissures, holes and solution pores are far lower than those of a reservoir limit although some micro - pores are developed in the matrix which therefore has no capacity of storing and producing oil - gas
摘要通過鉆井巖心和鑄體薄片觀察,根據下奧陶統灰巖基質的孔滲特徵和孔隙結構特徵,並與基質作為儲層的下限對照裂隙、洞穴和溶蝕孔洞不發育的灰巖基質,發現盡管有微孔隙的發育,但其孔隙度、滲透率、最大孔喉半徑、飽和度、中值喉道半徑等參數值遠低於儲層下限值,基本不具備儲集和生產油氣的意義。In port engineering, cracks in wharf surface will not only influence the visual quality of project, but also weaken the durability of structures when sea water penetrates into deep cracks and corrodes the internal reinforcement
摘要在港口工程中,碼頭面層產生裂縫,影響工程的觀感質量,海水滲入深度大的裂縫腐蝕內部鋼筋,影響結構的耐久性。And takes the method of passing electricity in wet environment to carry on the reinforcement corrosion acceleration to the reinforced concrete, and uses the linear polarization method to carry on the test to the polarized resistance and corrosion current density of the steel bar flowed through by electricity at different time, analyzing the rule of the change of the reinforcement corrosion parameters, and test the chloride ion diffusion coefficient to evaluate the impermeability of the concrete
本文以不同水灰比、不同含氣量、不同引氣劑的鋼筋混凝土為研究對象,採用濕通電法對鋼筋混凝土進行加速銹蝕,同時採用線性極化法對不同通電時間的極化電阻和腐蝕電流密度進行測試,分析銹蝕參數的變化規律,並通過測定cl -擴散系數來評價其抗滲性。Characteristic great intensity and cluctibility, strong corrosion resistence, nondeformation, leacking proof, ageing resistence use : clothing of cables, water pipe ect. technology norms shape and coustructre : screwed beutable insulated tube
特點用途:該產品高強度高韌性耐腐蝕不變形防滲漏抗老化,廣泛用於光電纜的外套保護城市建設自來水管等。It is these particles that can change nitriding layer microstructure and that accelerates the layer formation. nitrogen is infiltrated through the surface of metals and it changes the chemical components. as a result, the surface of metal has good performance with high hardness, high resistant attrition, high fatigue strength, high resistant erode and resistant die burn
這些高能粒子可以改變滲層組織,結構和促進化學反應過程,加速滲層形成,使氮元素滲入金屬表面,從而改變金屬表面的化學成分,使之具有高硬度、高耐磨性、高疲勞強度、高腐蝕能力及抗燒傷性。For concrete structure in the practical engineering, the non - mechanics damages, such as alkali - aggregate reaction, sulfate attack, carbonization, steel rust, freeze and thaw, and so on, are unavoidable due to the exist of erosive media. the deterioration form of mono or multi - factor influences on the concrete property of construction and durability greatly, and shortens the service life of the concrete to a large extent. permeability of concrete is the most important factor for these non - mechanics damages, so the permeability test of concrete is the normal and required item to study the durability of concrete
實際工程中的混凝土結構,因侵蝕性介質的存在而使非力學破壞行為無處不在,這些非力學破壞行為包括堿集料反應、硫酸鹽侵蝕、碳化、鋼筋銹蝕、凍融等,單一的破壞形式或多形式的復合破壞作用對混凝土結構性能及耐久性能均有著較為嚴重的影響,在很大程度上縮短了建築物的服役年限,而這些非力學破壞在很大程度上取決于其滲透性,所以測試混凝土滲透性能是研究判斷混凝土耐久性的常規必測項目。( 1 ) in newly - constructed stage and early stage of reclamation, the most important factor of runoff is 30min rainfall intensity. in later stage of reclamation, the most important one is 45min rainfall intensity. and the runoff capacity is the most important influence factor to soil erosion always ; ( 2 ) on the certain degree, loosening surface has an active function to infiltration condition but not to conserve soil ; ( 3 ) the most runoff is formed on platform of stackpile and the soil erosion often happens in the slope ; ( 4 ) stone - soiled dumps have an advantage over soil at respect of erosion resistance so that soil is not adapt in covering slope ; ( 5 ) grass has a better role in conservation of water and soil than arbor in early stage of reclamation ; ( 6 ) arbor - arboret - hemp mix is the best model for conservation
結果顯示:在未復墾時期和復墾初期, 30min降雨強度對徑流影響最大,復墾後期徑流與45min雨強相關性最強,而徑流量對土壤侵蝕量的影響始終最大;通過疏鬆地表巖土只在一定程度上改善地表的入滲條件,並不能起到保土的作用;平臺為徑流的主要形成區,而土壤侵蝕主要集中在斜坡;土石混排坡的土壤抗蝕性比覆土坡的要大得多,在排土場形成過程中不宜用厚層黃土覆坡;在復墾初期,純草模式水土保持效果明顯好於純喬模式。The result indicates that when the air content of the concrete changes from 1 to 4 percent, the polarized resistance of the identical flow electricity time increases along with the increment of the air content, the corrosion current density reduces along with the increment of air content, the chloride ion diffusion coefficient reduces with the increment of air content ; when air content changes from 4 to 6 percent, the rule of the change of the polarized resistance and corrosion current density happens to be the opposite, the diffusion coefficient of the chloride ion increases along with the increment of air content ; when the air content is 4 percent, the rust - resisting property of concrete is best, and so is the impermeability of the concrete
試驗結果表明,混凝土的含氣量在1 . 9 % ~ 4 . 2 %變化時,極化電阻隨含氣量的增大而增大,腐蝕電流密度隨含氣量的增大而減小, cl -擴散系數隨含氣量的增大而減小;當含氣量在4 . 2 % ~ 6 . 4 %變化時,極化電阻、腐蝕電流密度和cl -擴散系數的變化規律則相反;當含氣量為4 . 2 %時,抗鋼筋銹蝕性能最佳,抗滲性最好。 cl -擴散系數與鋼筋銹蝕參數在一定程度上有著良好的相關性,抗滲性的結果較好地反映了混凝土中鋼筋銹蝕的程度,可以用cl -擴散系數評價引氣混凝土的抗鋼筋銹蝕性能。In this dissertation, rainfall infiltration, runoff, and soil water redistribution on a hillslope were studied by simulated rainfall experiments, and soil water cycling was investigated by site observation and soil sampling methods. moreover, the reasons for the desiccation of deep soil layer were analyzed, and its assessment indexes and standards were presented. the main results are as follows : ( 1 ) rainfall infiltration into a planar hillslope with a homogeneous isotropic soil could be simply regarded as one - dimensional infiltration process, if soil erosion was prevented
針對當前該區植被恢復重建中存在的科學問題,以植被建設的關鍵性限制因素?土壤水分為出發點,通過室內外模擬降雨試驗,研究了坡地降雨入滲、產流及土壤水分再分佈規律,同時採用定位觀測和采樣分析相結合的方法,分析了坡地土壤水分的循環與轉化特徵,並初步建立了深層土壤乾燥化程度的評價標準,取得的主要結論如下: ( 1 )在防止土壤侵蝕的條件下,均質坡地的降雨入滲過程可以簡化為一維。Abstract : the layer texture and the effect of technical parameters on the depth of boronization layer after low temperature boronization of 45 steel and the difference of corrosion resistance between low temperature boronization and high temperature boronization are described in the paper
文摘:敘述了45鋼低溫滲硼后的組織,工藝參數對滲硼層深度影響的規律以及低溫滲硼層與高溫滲硼層的耐蝕性差別。With the hardness tests, it is indicated the hardness of the nano alumina or nano silicon carbide coating is improved to 1. 6 - 2. 5 times as that of the plasma spraying coating. with the wearing tests, it is indicated that low laser power employed, the wearing performance of the coating without nano material increase to 1. 3 times as that of the plasma coating, at the same time, the wearing performance of the coating with nano material increase 2. 3 - 6 times as that of the plasma spraying coating, the wearing mechanism is further analyzed. with the erosion tests, it is indicated that the erosion performance of the coating with nano material increase five times as that of the plasma spra
與相應等離子噴塗層相比,硬度測試表明,含納米al _ 2o _ 3或sic的各種復合塗層硬度提高了0 . 6 - 1 . 5倍左右;耐磨性測試表明,小功率下單純的激光重熔耐磨性提高了30 ,而納米滲入后塗層的耐磨性提高了1 . 3 - 5倍左右,對耐磨性提高的機理作了進一步的探索和分析研究;耐蝕性測試表明,經激光熔覆納米滲入后的各種塗層耐蝕性能提高了4倍以上,同時塗層厚度、表面質量對腐蝕性能有影響。Surface hardness is strengthened by use of plasma nitriding technique to change microstructure of mould surface. on the basis of that, the major research works accomplished in this paper are as follows. hardness, resistant attrition, fatigue strength, resistant erode and resistant die burn of the materials are enhanced and the life of the mould is increased by five to ten times
本人根據近年來模具工業的快速發展,模具的表面工程越來越受到普遍重視,利用等離子滲氮技術可以改變模具表面的組織結構使表面硬度得到強化,提高了材料的硬度、耐磨性、疲勞強度、抗腐蝕能力及抗燒傷性,使模具的壽命提高5 - - 10倍。The main properties required are impact resistance, chemical resistance to fuel and low hydrocarbon permeability
主要性能要求是抗沖擊性,耐燃油化學腐蝕性和低烴滲透度。分享友人