sand-fly 中文意思是什麼
sand-fly
解釋
【蟲類】白蛉。-
A study on the application of cemented backfill mining based on fly - ash and fine sand
桃沖鐵礦提高井下采出品位的實踐 -
Yes. there will be specific materials that fly up for sand, sand bags, grass, rock, metal, water etc etc. when shot, mortar ' d, or grenaded
有，當子彈擊中，手雷爆炸的時候將會有特定的物質飛起來，比如沙石，草，石頭，金屬，水，等等。 -
The research is to develop a new material - - - - high performance concrete of hill sand on the basis of practice of high strength concrete of hill sand and knowledge of ultra - fine trass additive by using concrete material in guizhou and mixing fly ash. the research result shows that the flowability, moldability, cohesiveness of high performance concrete of hill sand are significant by comparison with ordinary concrete on mechanical properties, long term properties, and durability
本研究課題是在已成功研製並實際應用的c60高強山砂混凝土的基礎上，結合對微細（超細）活性摻合料性質的理論認識，充分利用貴州當地的混凝土材料，並摻入微細（超細）活性摻合料，研製一種新型的高性能混凝土，即山砂高性能混凝土。 -
On the basis of research of various physical characteristics of coal gangue, fly ash, aeolian sand, through contrast experiment, we chose this new reinforce material
在對煤矸石、粉煤灰和風積砂土的各項物理力學特性進行試驗研究的基礎上，通過對比試驗選擇了可供工程應用的新型固化劑。 -
This paper first discusses the cause of crack formation and crack mechanism of high performance concrete. then carries out crack tests of three groups of concrete slabs using aggregate type, sand rate and dosage of fly ash as design parameter
本文初步探討了泵送高流態混凝土的裂縫成因和開裂機理，並分別以骨料品種、砂率以及粉煤灰摻量為設計參數進行了三組配合比混凝土平板的抗裂試驗。 -
Based on the principles of designs of self - compacting and light aggregate concrete mix, sclc of lc30 - lc50 was developed by using absolute volume method. the main factors affecting the workability of sclc were studied by adopting the modified l - 800 fluidity instrument. the results indicate that the key techniques insuring good workability of sclc are about 30 % first - grade fly ash, about 50 % volume sand ratio, 2 % ~ 6 % dosages of silicon fume and compounded superplasticicizers with viscous ingredient
採用改進l - 800流動儀，研究了影響lc40自密實輕骨料高性能混凝土工作性的主要因素，結果表明：粉煤灰摻量保持30左右，硅灰摻量為2 6 ，體積砂率為50左右和摻加具有粘塑組分的復合高效減水劑是保證sclc拌合物具有較好工作性的關鍵。 -
( 1 ) systematic triaxial compression tests are made for the sand reinforced by various national geosynthetics. comprehensive investigations into the interaction characteristics are also made between sand / lime fly ash and various national geosynthetics by direct shear tests and pull out tests, which can help choosing geosynthetic type and understanding the geosynthetic reinforcement mechanism ; ( 2 ) this paper is also firstly systematically presents the results of a comprehensive investigation into the interaction characteristics between lime fly ash and various national geosynthetics ; ( 3 ) by non - linear fem, the influence of the modulus of geosynthetics, the thickness of the soft ground and the width of the foundation on the effectiveness of geosynthetic reinforcement are also studied ; ( 4 ) the main conclusions are as followed : ( geotextiles are likely to be suited for projects allowing high displacement, polyester warp knitting geogrids and oriented geogrids for projects allowing medium displacement, glass fiber geogrids for projects allowing low displacement and geonets for secondary projects. ( the confining effect of fill material to act on different kinds of geosynthetics varies largely, which must be considered
（ 1 ）本文利用三軸壓縮試驗，比較各種國產土工合成材料對砂土的加筋效果；利用直剪試驗和拉拔試驗，比較各種國產土工合成材料與砂土或石灰粉煤灰的界面摩擦特性，深入研究土工合成材料的加筋機理，首次明確提出加筋土工合成材料的選型原則； （ 2 ）本文首次系統地研究了石灰粉煤灰與各種國產土工合成材料的界面摩擦特性； （ 3 ）本文採用有限元法，系統研究了加筋模量、軟土地基厚度、基礎寬度等因素對土工合成材料加固軟土地基效果的影響； （ 4 ）本文主要結論如下： （無紡土工織物適合用於允許大變形的加筋土工程；滌綸纖維經編土工格柵和塑料拉伸土工格柵適合用於對變形有較嚴格要求的加筋土工程；玻璃纖維經編土工格柵適合用於對變形有嚴格要求的加筋工程；土工網適合用於低等級的加筋土工程。 -
Baking - free brick was made by using fly ash, sand, cement and other industrial wastes, which makes the cost of material low. furthermore, when it was made, the degree of mechanization is very high, using few workers, production cycle is short, thus the cost was lowered
免燒磚是採用粉煤灰、砂子、石粉、礦渣等工業廢渣按一定比例加入水泥振動，強力壓制而成，原料來源價格低，加之生產時機械化程度高，用人少，生產周期短，因此成本低，免燒磚的價格比紅磚低，裝卸時不容易損壞邊角，且沒有粉塵，衛生條件好，對人體的呼吸道傷害小。 -
In this paper, referring to qingju water power station, temperature control analysis and study has been done : study on the match ratio of the concrete and question of modifying of the special fine sand concrete to improve resisting ability of splitting of concrete ; study on the technology of the highly mixed fly ash to reduce the adiabatic temperature rise of concrete ; in case of the condition of resisting splitting to allow, study on the temperature control measure to strengthen and water the size of building, simplify the operational procedure, accelerate the construction speed, economize the expenses of the project
溫控問題成為青居水電站設計和施工的關鍵技術問題。 、本文對水工大體積混凝土溫控問題進行了分析和總結，結合青居水電站閘壩工程，開展溫度應力及溫度控制研究:研究混凝土的配合比及特細砂混凝土『改性問題，提高混凝土的抗裂能力;研究高摻粉煤灰技術，降低混凝土的絕熱溫升:在抗裂條件允許的情況下，研究施工過程中溫控措施的簡化，以加大澆築尺寸，簡化施工程序，加快施工進度，節約工程費用。 -
Based on the calculation methods of nominal water - cement ratio of mortar and average paste thickness of standard sand provided by authors, the nonlinear relation between fluidity of mortar and nominal water - cement ratio of mortar, average paste thickness of standard sand, fly ash - binder ratio was established by using artificial neural network ( ann )
摘要在給出水泥膠砂名義水灰比和標準砂平均漿體厚度計算方法的基礎上，採用人工神經網路方法，建立了水泥膠砂流動度與水泥膠砂名義水灰比、標準砂平均漿體厚度、粉煤灰與膠凝材料用量比之間的非線性映射關系。 -
On systematic analysis of engineering property of the aeolian sand, we choose cement stabilized aeolian sand, cement stabilized mixture of aeolian sand and soil, lime - fly ash stabilized aeolian sand, lime stabilized mixture of aeolian sand and soil and lime - cement stabilized mixture of aeolian sand and soil as object of research. on the base of the determination and analysis of temperature contraction property, aridity resistance property and strength of the stabilized aeolian sand mixture, this paper mainly analyses influential factors and inherent law of property about the stabilized aeolian sand mixture, and provides scientific foundation for the using of aeolian sand as paving material
本文在系統分析風積沙工程特性的前提下，以水泥穩定風積沙、水泥穩定混合沙土、石灰穩定混合沙土、石灰粉煤灰穩定風積沙和水泥石灰穩定混合沙土作為底基層材料研究對象，在對其溫縮、干縮以及強度和模量等性能指標的測試、分析的基礎上，研究分析了這些穩定風積沙混合料各性能的影響因素和內在規律，為風積沙用作沙漠地區公路路面材料提供了科學依據。 -
Some conclusions are drawn as following through analysis and research : 1. through rectifying finest sand character and concrete mix ratio test, anti - split capability of structure concrete is strengthen ; 2. heighten ratio of fly ash in finest sand concrete is beneficial to temperature control of huge volume concrete
本文通過分析研究，得出以下成果: 1 .通過混凝土配合比試驗及特細砂混凝土改性研究，特細砂混凝土強度達到普通混凝土強度，且混凝土28天齡期極限拉應變為1 . 10xl0一4 ，高於普通混凝土29 . 4 % ，具有良好的抗裂性能。 -
The author excogitated a kind of appropriative mud jacking material which is made up of cement, sand, fly ash, admixture and water. this material which was developed on the basis of large amount of tests has the proprieties of good self - flowing density, high earlier strength, non - segregation, non - weepage and non - contractility. especially, the author aim at dealing with pumping mud and earlier maintained developed a kind of high flow grade material which can meet the requirement of mud jacking
本文研製了專用壓漿材料，採用水泥、砂、粉煤灰、外加劑和水混拌而成，通過大量實驗配製出的漿液具有自流淌密實性好、早期強度高、無離析、無泌水、無收縮的性能，特別是針對路面唧泥處理或預防性養護，板底脫空量較小，研製出高流動度材料，能滿足壓漿施工的需要。 -
According to the use requirements of the highway pavement base courses, through the test in laboratory, the determination method of the mix proportion of the lime fly - ash stabilized gravel - sand base courses is introduced
摘要根據公路路面基層的使用要求，通過室內試驗介紹了石灰粉煤灰穩定砂礫基層合理配合比的確定方法。 -
By uses of handan raw materials, this paper studies the influence of coarse aggregate limiting grain size, water - binder ratio, fly ash replacement, sand - total aggregate ratio on the strength and workability of concrete prepared with low water - binder ratio
摘要本試驗採用邯鄲當地的混凝土原材料，利用正交設計方法，試驗研究和分析了粗骨料最大粒徑、水膠比、粉煤灰摻量、砂率對低水膠比混凝土的強度及和易性的影響。 -
Orthogonal experiment study on concrete composed of manufactured sand and fly ash
人工砂粉煤灰混凝土正交試驗研究 -
In this paper, the influences on concrete shrinkage and splitting tensile strength by the varieties and contents of the raw materials, such as cement, sand, fly ash, water - reducer and expansion agents, are studied. the possibility of the prevention of the concrete cracking by proper concrete proportion design is discussed
本文著重研究了水泥、砂、粉煤灰、減水劑、膨脹劑等材料的品種、用量對混凝土收縮性能及混凝土劈裂抗拉強度的影響，探討了通過合理的配合比設計達到減少混凝土收縮、提高混凝土劈裂抗拉強度進而降低混凝土開裂風險的可能性。 -
And the optimal content of materials are : super plasticizer nf 0. 8 %, fly ash 20 %, ps 20 ~ 30 %, zeolite powder 20 %, sf 5 ~ 8 % ; the negative influence of hill sand powder should be avoided by controlling of powder content and the use of active additive and super
本文通過對配製的山砂高性能混凝土和普通混凝土的拌合物性能、力學性能、長期性能及耐久性能的研究，得到流動性、保水性、粘聚性等性能優良的山砂高性能混凝土。
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