勻質混凝土 的英文怎麼說
中文拼音 [yúnzhíhúnníngtǔ]
勻質混凝土
英文
homogeneous concrete- 勻 : Ⅰ形容詞(均勻) even Ⅱ動詞1. (使均勻) even up; divide evenly 2. (分出一部分) spare
- 質 : Ⅰ名詞1 (性質; 本質) nature; character; essence 2 (質量) quality 3 (物質) matter; substance;...
- 混 : 混形容詞1. (渾濁) muddy; turbid2. (糊塗; 不明事理) foolish; stupid
- 凝 : 動詞1. (凝結) congeal; curdle; coagulate 2. (注意力集中) fix
- 混凝土 : concrete; beton; jetereting混凝土壩 concrete dam; 混凝土板 concrete slab; 混凝土標號 concrete gra...
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The result indicate that the lightweight aggregate with normal shape are easy to control than that with globular shape. the homogeneity of concrete can be improved by prewetting the ceramisite agitator, and should shorten vibrating time
研究結果表明,普通型陶粒混凝土較圓球型陶粒混凝土勻質性更容易控制;對吸水率較大的陶粒可以通過預濕來改善勻質性,另外應盡量縮短振動時間。The polyacrylonitrile have no use to improve the homogeneity of concrete. the homogeneity of concrete have bad effect to compression strength, but the effect to chloride ion coefficient of diffusion is not obvious. for concrete used generality, if it ’ s homogeneity is acceptable ( k 7 % ), the percentage of lost of the compression strength will lower than 10 %
勻質性對抗壓強度的影響較大,對氯離子滲透系數的影響不明顯,對於一般用途的混凝土,勻質性良好( k 4 % )時,強度損失在5 %以內,勻質性合格( k 7 % )時,強度損失在10 %以內;對于深層澆注的混凝土,離析度k 3 %時上下層強度的差異率才能保證在5 %以內。Wuxi nakano machinery co., ltd. and japan - field technology, the development of a new type of closed turntable polishing concrete slabs. polished tiles from the radically changed the cooling water production accelerated, workers unable to operate close to the phenomenon ; supported by tanks under the workpiece table, it will not only compensate for the loss millstone, but stable grinding force. different uniform surface quality products ; with the grinding process workpiece turntable and rotating products
無錫中野機械有限公司引進日本技術,全新開發的轉臺型封閉式混凝土地磚磨光機,從根本上改變了磨光地磚生產中冷卻水飛濺,操作工人無法靠近的現象工件轉臺由下油缸支承,不僅能及時補償磨石的損耗,而且磨削力穩定不變,不同產品的表面質量均勻一致磨削過程中產品隨著工件轉臺而轉動,避免了其它型式磨光地磚生產中產品不動而帶來的同一產品表面質量不均的現象。This paper deals with high fluid concrete in which high strength ceramsite made from shale was used as coarse aggregate. effects of cement content, water - cement ratio, sand percentage, mineral admixture, grading and pretreatment of lightweight aggregate on compressive strength and workability of high fluid structural lightweight aggregate concrete have been studied. the rules of water absorption of high strength lightweight aggregate under different pressure and effects on uniformity of high fluid structural lightweight aggregate concrete have been studied too
本文採用高強頁巖陶粒,摻加高效減水劑配製大流動性結構輕集料混凝土,討論了水泥用量、水灰比、砂率、礦物摻料及輕集料的級配和預濕方式對大流動性結構輕集料混凝土強度和工作性的影響;系統研究了高強陶粒在常壓和壓力下的吸水規律;研究了影響大流動性結構輕集料混凝土勻質性的因素,提出了解決大流動性結構輕集料混凝土分層離析的具體措施。So i study on this problem. the device were designed by myself to evaluate the homogeneity of concrete
本文採用自行設計的勻質性測試裝置,對輕集料混凝土勻質性進行研究。The homogeneous characteristics of polycarboxylic acid type waterproofing agent are measured according to gb / t 8077 ? 2000 concrete admixture homogeneous experimental method, the technical characteristics of polycarboxylic acid type waterproofing agent are checked depending on jc474 ? 1999 mortar and concrete waterproofing agent. the result shows that polycarboxylic acid type waterproofing agent is provided with good anti - permeability
對試制樣品按gb / t8077 ? 2000 《混凝土外加劑勻質性試驗方法》標準檢測多元羧酸系防水劑的勻質性,按jc474 ? 1999 《砂漿、混凝土防水劑》標準檢測多元羧酸系防水劑的技術性能。The strength is a main mechanics performance index of the concrete. it has always been a focus of material scientific research of concrete. models about mechanics characteristic of concrete were mostly the understanding based on material macroscopical level of concrete in the past. its main characteristic turns the material ideal with heterogeneous, nonuniform nature into the even, continuous body and carry on modeling. this kind simplified and met project practice ' s demands to a certain extent, but it is difficult to study the influence produced toward strength of material of structure of the microcosmic or the mescoscopic within the concrete material with this kind of method
以往有關混凝土力學特性的模型大多是基於混凝土材料宏觀層次的認識,其主要特點是把具有多相、非均勻性質的材料理想化為均勻、連續體進行建模,這種簡化盡管在一定程度上滿足了工程實踐的需要,卻難以用這種方法來研究混凝土材料內部微觀或細觀結構對材料強度所產生的影響,不能說明材料內部結構如孔結構變化時強度的變化規律,也不能用於指導如何改進材料的組成和微觀結構而達到提高混凝土強度的目的。We have researched the factors that influenced the homogeneity of concrete that include the lightweight aggregate, w / c, admixture and vibrating time. we have also studied on the influence the homogeneity of concrete to the strength and the permeability of the concrete
從影響輕集料混凝土勻質性的因素出發,研究了輕集料、水灰比、外加劑、振動時間等對拌和物勻質性的影響及勻質性對強度、滲透性的影響。In addition, vibration has great effects on uniformity of high fluid structural lightweight aggregate concrete. there is obvious separation of lightweight aggregate from mortar in mixture of high fluid structural lightweight aggregate concrete with slump of 220mm when vibrated for 10 minutes
此外,振動對大流動性輕集料混凝土的勻質性十分不利,對坍落度220mm左右的輕集料混凝土拌和物,振動時間超過10秒,就會出現明顯的分層現象。Firstly, the environment harm of the waste rock is studied ; secondly, we research the physics and mechanics property of the waste rock of the dabagou tunnel and get the physics and mechanics property index of waste rock ; thirdly, after comminuting the waste rock and compounding concrete as coarse aggregate, we make the comparison between it and the songshan stone in the fuxin building market at present, it proves to possess extension application value ; fourthly, on the foundation of it, we utilize waste rock as coarse aggregate to compound high strength concrete, steel fiber high strength concrete, polymer cement concrete, asphalt concrete by uniform design and research their mechanics property index by experiment
首先闡述了排矸石對環境產生的危害,其次對大巴溝隧道排矸石的物理力學性質進行了試驗研究,獲得了排矸石的物理力學性能指標。將排矸石粉碎后,作為粗骨料配製成混凝土,與目前阜新建築市場上所用的松山石子進行比較,證明其具有推廣應用價值。在此基礎上,利用均勻設計法,將排矸石作為粗骨料配製成高強混凝土,鋼纖維高強混凝土,聚合物水泥混凝土,瀝青混凝土,通過試驗測定其力學指標,獲得了各種排矸石混凝土的優化方程和最佳配合比。Methods for testing uniformity of concrete admixture
混凝土外加劑勻質性試驗方法Methods for testing uniformity of concrete
混凝土外加劑勻質性試驗方法The concrete construction specifications currently in effect regarding the standard for evaluation of homogeneity of construction quantity of concrete are most applied to middle and lower strength concrete, but not to high strength concrete
現行混凝土施工規范對混凝土施工強度勻質性評定標準,多適用於中低強度混凝土范圍,不適用於高強混凝土。Nonlinear constitutive relations are discussed for analyzing the stress distribution, the appearance and development of the cracks, as well as the behavior of the boundary conditions of the two way slabs respectively. in the light of the experimental research on r. c. two way slabs under static loading, the behavior of yield line, the load deformation curves and the crack yield, plastic limit loads of slabs with different supporting conditions are studied
根據反映雙向板混凝土材料非勻質性的本構關系,分析了雙向板在荷載作用下的變形、屈服、裂縫和破壞的形態特性,並對鋼筋混凝土雙向板在不同支承條件下的塑性極限荷載、正常使用撓度(曲線)和截面設計作了進一步研究。Block wall is supposed as a uniform material and having same properties in every direction, and its relation of stress - strain adopts the model of zhejiang university structure lab. aided by ansys, eight types of walls under level load have been nonlinear analyzed and achieved the cracking, extreme load, cracks location and form respectively. the simulation results show great agreement with experiment results
將砌塊砌體材料做勻質、各向同性處理,採用浙江大學結構工程研究所推薦的砌塊砌體非線性本構關系,利用ansys中的混凝土單元solid65模擬砌塊砌體和鋼筋混凝材料,共對八種類型墻體進行了非線性有限元模擬分析,分別得出了各種墻體的初裂、破壞荷載、裂縫開展情況、應力、位移等結果,初裂、破壞荷載和實測值相差不大,模擬的初始裂縫位置、形式以及裂縫開展情況與實驗結果比較吻合。It has better physical mechanical properties than ordinary concrete except for compressive resistance. it can make ordinary concrete that is a kind of brittle material be changed into a kind of compound material that has better plasticity. its main working mechanism is to improve the brittleness of ordinary concrete by using short fibers that are scattered equably
除抗壓強度外,它的各項物理力學性能都比普通混凝土有顯著的改善和提高,使原屬于脆性材料的混凝土變為具有一定塑性性質的復合材料,其主要工作機理是利用均勻分散的短鋼纖維來改善普通混凝土的脆性。It can make ordinary concrete that is a kind of brittle material be changed to a kind of compound material that has better plasticity. its main working mechanism is to improve the brittleness of ordinary concrete by using short fibers that are scattered equably. because short fibers have higher dragging resistance and ordinary concrete has higher crushing strength in the process of stressing, every technical property of fiber - reinforced concrete is improved greatly
鋼纖維混凝土是近年來發展起來的一種新型建築材料,是在普通混凝土中摻入適量的鋼纖維而形成的可澆築、可噴射成型的一種新型復合材料,除抗壓強度外,它的各項物理力學性能都比普通混凝土有顯著的改善和提高,使原屬于脆性材料的混凝土變為具有一定塑性性質的復合材料,其主要工作機理是利用均勻分散的短鋼纖維來改善普通混凝土的脆性。Synthetic maro - fiber is a new type reinforcement material that appeared in the last of 20th century. when compared to steel fiber and synthetic micro - fiber, the synthetic macro - fiber offers a large number of advantages : ( 1 ) light ; ( 2 ) evenly distributed ; ( 3 ) erosion resistance ; ( 4 ) obviously improves the impact resistance, flexural toughness, fatigue and seismic properties ; ( 5 ) resistance for early crack ; ( 6 ) prominent advantage in shotcrete
粗合成纖維興起於20世紀末,它是一種新型的增強增韌材料,相對于鋼纖維、細合成纖維,它具有明顯的競爭優勢: ( 1 )質輕; ( 2 )無腐蝕; ( 3 )易於均勻分散; ( 4 )顯著提高混凝土的韌性、抗沖擊、抗疲勞、抗震防爆性能; ( 5 )可以提高塑性混凝土的早期抗裂性能; ( 6 )在噴射混凝土中具有顯著的優勢。The tower shafts, most of which are hollow and varying in cross section, and altitudinal construction bring trouble to the form work and the stress of strand wire. and the cracks on the crossbeams will be caused by the following - deformation of the bracing structure joints, elastic deformation , uneven settlement and temperature changes. the additional stress of the base slab and the foundation is caused by the deviation of cable bent tower construction
但大跨度橋梁混凝土索塔施工設備進場及現場管理都比較困難;塔柱多為空心變截面,且為高空作業,給模板工程及預應力張拉帶來一定困難;支撐系統連接的間隙變形、彈性變形、不均勻沉降以及環境溫差可導致橫梁裂縫;索塔施工偏位會引起的承臺和基礎的附加應力,對加勁梁的架設影響大;懸吊結構未完體系(架設時)施工階段的風致振動往往影響到施工的安全和質量;實心塔柱部分體積較大,易產生溫度裂縫。The asphalt concrete has very good flexibility to fit different kinds of settlements. if there were cracks, the asphalt concrete would be able to self - heal up with the act of the dam gravity. besides that, the impervious asphalt concrete is much easier to construct than the impervious earth material
碾壓式瀝青混凝土的滲透系數一般小於1 10 ~ ( - 7 ) 10 ~ ( - 8 ) cm s ;瀝青混凝土具有較好的柔性,能較好地適應各種不均勻沉陷,如果一旦發生裂縫,在壩體應力作用下,瀝青混凝土有自愈閉合能力;瀝青混凝土防滲體比土質防滲體易於施工,在多雨季節更顯出其優越性。分享友人