風積粘土 的英文怎麼說
中文拼音 [fēngjīniántǔ]
風積粘土
英文
air deposited clay-
The expansion agents can only make up the shrinkage to some extent, and the compensation effects would be reduced when the retardener and fly - ash are used. the expansion agents are not panaceas to avoid the shrinkage cracking as expansion can also reduce the concrete soundness. under bad curing condition, the polypropylene fibrillated film fiber can improve concrete ' s anti - crarking property, while the nominal steels have very unobvious effects. to reduce the concrete shrinkage thus avoid the cracking, the former factors must all be taken into account in concrete proportion design to develop sound concrete
研究結果表明，水泥的品種和用量是影響混凝土收縮值的主要因素之一，當混凝土中水泥用量超過470kg / m ~ 3時，混凝土的收縮值超過400 10 ~ （ - 6 ） ，在約束狀態下存在高開裂風險；採用細砂使混凝土單位用水量顯著提高，收縮值也大幅增加；優質粉煤灰總體上能抑制混凝土的收縮，以超量方式摻入其抑制作用更加明顯，但粉煤灰混凝土早期的粘聚性較差，應注意養護，以免失水產生龜裂；早強減水劑和緩凝減水劑都會使混凝土收縮值增加；膨脹劑只能補償混凝土部分收縮，同時受緩凝劑和粉煤灰的抑制，而且膨脹使混凝土的體積安定性增加了不確定因素，膨脹劑不是解決混凝土收縮裂縫的良方。The main results are following : ( 1 ) the variation of clay / silt ratio can indicate the secondary clay action of dust depositions ; the variations of magnetic susceptibility and total fe content are inferred to be records of the changeable intensity of bio - pedogenesis ; the variations of sr content and rb / sr ratio can indicate bio - pedogenesis, dissolving and leaching action ; the content of total organic carbon ( toc ) can reflect variation of climate and vegetation during soil formation, it indicates the intensity of weathering and bio - pedogenesis ; the content variation of caco3 can show the intensity of dissolving - leaching action and secondary deposit, which was noted as pseudomycilia in pores and fissures in the sediment, so it can indicate the intensity bio - pedogenesis quite well. these proxy indexes also reflect obvious regional difference of pedogenic environment and the intensity bio - pedogenesis ; namely, secondary clay action, dissolving - leaching action and bio - pedogenesis are all much stronger in south than that in north
實驗結果表明：粘粒粉沙比值能很好地指示粉塵堆積物的次生粘化作用；磁化率和全鐵很好地指示生物風化成壤作用； sr和rb sr比值能很好的指示生物風化成壤作用和淋溶作用；總有機碳（ toc ）含量的高低，在一定程度上反應了土壤發育過程中氣候和植被狀況的變化，指示著成壤過程中腐殖質化的程度； caco3含量的變化，可以反映了黃土古土壤形成時的風化成壤作用的強弱程度，指示成壤過程中的淋溶作用和次生碳酸鹽化作用；並且各指標所指示的成壤環境和成壤強度存在明顯的區域差異，即渭河流域土壤的生物風化成壤作用、次生粘化作用和淋溶作用均表現出南部強于北部。Grain - size accumulation percentage of the aeolian sands in the past 150 ka in milanggouwan section is mainly characterized by the aeolian palaeo - mobile dune sands, which are composed of majority fine sands and minority very fine sands. there is n ' t almost any silt and clay. those of the fluvial facies, especially the lacustrine facies and palaeosols, are mainly composed of very fine sands and also contain some quantities of silt and clay
米浪溝灣剖面150kabp以來風成砂的粒度累積百分含量以古流動砂丘砂物質為主，其中以細砂含量最高，極細砂為次，幾乎不含粉砂與粘土；河流相、特別是湖沼相與古土壤以極細砂含量占優勢，且具一定含量的粉砂和粘土。The bridge is located on the alluvial plain in the front of pearl river sloping field. its piles pass through weak soil layer, sandy clay and gravel stratum ; piles " sustaining layer sits in weak - weathering or faint - weathering mudstone
該橋位於珠江三角洲坡前沖積平原，採用樁基穿越軟土、亞粘土、砂土和礫砂，持力層置於弱風化和微風化的泥質砂巖和泥灰巖夾泥巖中。The second stage is stage of the matter transfers the activated matter, that is to say, minerals build up their surface area after passing though physical weathering, maifan stone form a lot of clay mineral, oxide, oxhydroxide and collide mineral after passing though chemical weathering. it makes nutrition elements transform from crystal state to adsorption state and it expands the activation of mineral, in the latter stage, it makes maifan stone have many special physicochemical adjusting character, for example, ph and foi bi - directional absorptive and ion exchange character, so these characters expand maifan stone ' s uses
第二階段為物質轉變的活性階段，即通過物理風化增大表面積、通過化學風化形成大量粘土礦物、氧化物和氫氧化物及膠體礦物，使營養元素由結晶態轉變為吸附態，從而大大增加了其活性。在後一過程中麥飯石還形成了許多特殊的物理化學性質，如ph值和f _ （ o2 ）的雙向調節性，吸附性和離子交換性等，從而擴大了其用途。By using wind - blown soil, fly ash, clay, a small amount of cement and addition agent as raw materials in this paper, the optimum dispensation formula and spreading theory about filling and pre - grouting of composite filling material were studied to have important practical significance to large filling and pre - grouting project
本文利用風積土、粉煤灰、粘土、少量水泥和其它外加劑為原材料，研究復合充填注漿材料的最佳配比及其擴散充填注漿理論，對于大型充填注漿工程具有重要的現實意義。Based on analyzing and determining basic characteristics of every raw material, the dispensation tests had been performed about clay - cement paste, fly ash - cement paste, fly ash - clay - cement paste and wind - blown soil - clay - cement paste, and their performance figures were tested systematically and obtained perfectly so that a reasonable dispensation formula was get to be used in filling project
在分析測試各種原材料基本性能的基礎上，按正交試驗設計方法，完成了粘土?水泥漿、粉煤灰?水泥漿、粉煤灰?粘土?水泥漿和風積土?粘土?水泥漿的配比試驗，並對其各項性能指標進行了系統的測試和分析，得到了可供工程應用的合理配方。分享友人