混縮聚 的英文怎麼說
中文拼音 [húnsuōjù]
混縮聚
英文
mixed polycondensation-
Experimental investigation on compensative shrinkage polypropylene fiber concrete
聚丙烯纖維補償收縮混凝土性能試驗研究Meanwhile, the pervaporation of pvb membrane containing etherified p - cd and ca membrane containing etherified p - cd were measured respectively, obtaining a permeation flux greater than other membranes with p - cd
同時，測試了醚化- cd與聚乙烯醇縮丁醛（ pvb ）共混膜，醚化- cd與ca共混膜的滲透汽化性能，獲得了比較理想的滲透通量。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。In this research, the lime - fly - ash bound macadam was joined with steel fibers, glass fibers and polypropylene fibers with the contents of the lime, the fly ash and the macadam fixed in lab tests. the study focuses mainly on the split strength, compression strength, and modulus of compressive resilience and shrinkage property of the lime - fly - ash bound macadam enhanced by different kinds of fibers. based on the test, a detail theoretical analysis was made on the relation of mechanical property, dry shr inkage with the variety and the quantity of fibers, applying the theories of strength, dry shrinkage and the methods of statistics, curve mimesis and variance analysis
本論文主要是研究在同一種二灰碎石混合料（石灰、粉煤灰、集料的含量及比例相同）中分別摻入不同數量的鋼纖維、玻璃纖維、聚丙烯纖維，通過室內試驗對其抗拉強度、抗壓強度、抗壓回彈模量和乾燥收縮性能與纖維摻量和纖維品種之間的關系加以分析和研究，並在此基礎上根據二灰碎石強度形成機理、乾燥收縮機理和數理統計、曲線擬合、方差分析的方法分析纖維品種和纖維數量對二灰碎石的力學性能和乾燥收縮性能的影響，最後得出纖維對二灰碎石的強度、抗壓回彈模量、乾燥收縮有很顯著的影響，並提出了相應的建議。The article analyze the concrete drying shrinkage mechanism, find the major factors of affecting the drying shrinkage, analyze the lack of shrinkage reducing agent, who be of low molecular weight and line chain, design a new shrinkage reducing agent ? ? shrinkage reducing agent of poly - acrylate. the shrinkage reducing agent of poly - acrylate is mainly composed of crylic acid 、 cinnamene 、 poly - glycol 、 solicitating agent 、 chain transferring agent and activator, which come by these processes of polymerization 、 esterifing and neutralization to form a pectinate polymer, which have a high molecular weight and many poly - oxidative alkenes
論文分析了混凝土乾燥收縮的機理，確定了影響乾燥收縮的關鍵因素，分析已有低分子量的、直鏈型減縮劑的不足，設計了一種新型的減縮劑? ?聚丙烯酸鹽類減縮劑，其主要由丙烯酸、苯乙烯、聚乙二醇、引發劑、鏈轉移劑、催化劑等經過聚合、酯化和中和反應，生成一種高分子量的、含聚氧化烯鏈的聚合物。In the volume change study, we found appropriate temperature is helpful for shrinkage control, and different lpas have different shrinkage control effects due to their dipole moment, tg, miscibility with upr and morphology after blending. there existed an optimal concentration range of poly ( vinyl acetate ) based lpas for shrinkage control. lpa was effective for shrinkage compensation in this range, on the other hand, lpa only acted as filler and the low profile effect vanished out of this range, however, for polystyrene based lpa, the more concentration the better shrinkage control
在膨脹研究中，發現適當的溫度條件更有利於upr達到好的收縮控制效果；不同類型的lpa隨著偶極矩、玻璃化溫度、與upr的相容性、與upr的混合形態的不同，表現出不同的收縮控制效果；聚醋酸乙烯酯類的lpa - a存在一個最佳收縮控制的濃度范圍，在這個范圍之內， lpa起到補償收縮的作用；而在這個范圍之外， lpa的作用僅相當于填料，不能起到收縮控制。Standard specification for preformed closed - cell polyolefin expansion joint fillers for concrete paving and structural construction
混凝土面層和結構建造用預制閉孔聚烯烴伸縮接頭填充料的標準規范Abstract : because the water - binder ratio of both high strength concrete and high performance concrete are very low, it bring about the following consequences such as : 1, the grade of cement strength would be a negligible symbol 2, the effectiveness of mineral admixture would be considerably improved 3, the high cohesion of the mixture and concrete " s shrinkage and creep would be changed etc. all these consequences should be well deliberated by the construction circles
文摘:高強混凝土和高性能混凝土因其水膠比都很低，給配製與施工帶來如下現象：水泥標號的「標志」作用淡化，礦物摻合料的作用顯著改善，拌合物的高粘聚性、混凝土的收縮和徐變性能的變化等，這些現象都值得施工人員注意。But some problems with self - compacting concrete such as high slump loss and the difficulty of harmonizing the cohesiveness and the flowability should be solved. the theory of concrete mix design should also be perfected. in accordance with these problems, this thesis carry out such research works as follows to deal with them
然而，免振搗混凝土特別是高強超高強免振搗混凝土坍落度損失大，粘聚性和流動性難以統一以及易產生收縮裂紋的問題亟待解決；免振搗混凝土的配比設計理論也需要進一步地加以完善。Synthesis of benzaldehyde glycol acetal catalyzed by h3pw12 o40 pan
鎢磷酸摻混聚苯胺催化合成苯甲醛縮乙二醇Test study on compression and deformation behavior of light heterogeneous soil mixed with expanded polystyrene
聚苯乙烯輕質混合土的壓縮變形特性試驗研究Durability experiment and analysis on fiber concrete applied in bridge pavement
聚丙烯纖維混凝土在橋面連續及伸縮縫中的應用According to each ingredients ( water retaining admixture, polymer, inorganic mineral ) " effect to mortar ' s behaviors ( water relentivity, strength, contractility ) in exclusive mortar " s composite addition, the text defines each ingredient ' s quantity scope, then define the mix through cross experiment. we compared the aac exclusive mortar ' s behaviors such as water relentivity, compressive strength, binding strength, shrinkage, flexural strength and others to ordinary mortar ' s ones, it turn out to be that there is much improve in former ' s behaviors such as water relentivity, compressive strength, binding strength, shrinkage, flexural strength etc, it also shows that the aac exclusive mortar can improve the crack in aac brick walling to a certain degree
並根據專用砂漿中復合外加劑的各個組分（保水劑、聚合物、無機礦物等）對砂漿主要性能（保水性、強度、收縮性、抗彎性等）的影響來確定每個組分的摻量范圍，再通過正交實驗確定最佳配合比，然後就普通砂漿與專用砂漿的保水性、抗壓強度和粘結強度、收縮值、抗彎曲性能以及其它性能進行了對比，對比結果表明專用砂漿的保水性、抗壓強度和粘結強度、收縮值、抗彎曲性能以及其它性能較普通砂漿都有了很大的提高，說明加氣混凝土砌塊專用砂漿在一定程度上可以改善加氣混凝土砌塊墻體的開裂情況。In the aspect of improving the cracking feature, compatibility and flexibility, the author has done experiments, including strength, modulus of elasticity experiments, and design some experiments similar to the practical structure and circumstance including adhesion strength between fresh mortars and old ones, between mortar and polystyrene board, mortar shrinkage in concrete circle, mortar shrinkage at different strength and different polymer - cement ratio, and temperature deformability at different strength and different polymer - cement ratio on mortars, on different type of formwork and on mortars with different type of formwork
在改善砂漿抗裂性、提高柔韌性和協調變形能力方面，進行了不同聚合物摻量的強度試驗、彈性模量試驗；設計了與模網混凝土實際結構和情況相接近的新老砂漿粘結強度試驗、砂漿與苯板的粘結試驗以及混凝土環中的砂漿收縮試驗；進行了不同強度、不同聚合物摻量下的砂漿干縮變形試驗、溫度變形試驗，以及不同結構形式的鋼網自身溫度變形試驗和配有鋼網的砂漿溫度變形試驗。The static triaxial test of two engineerings shows that the breaking strength of asphalt concrete declines significantly as the temperature rises and the strain increases noticeably when breaking. increase in the asphalt content leads to decrease in tangent modulus and cohesion, but the internal friction angle tends to increase. increasing confining stress results in the augment of the maximum stress and the ultimate value of volumetric strain
兩個實際工程的靜三軸變形與強度試驗表明，隨著溫度升高瀝青混凝土破壞強度明顯降低，破壞時應變明顯加大；瀝青含量的增加會導致切線模量和凝聚力降低，但內摩擦角趨于增加；周圍壓力增大會導致最大應力_ d增大，其體變壓縮極限值也越大。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。Standard test method for linear shrinkage and coefficient of thermal expansion of chemical - resistant mortars, grouts, monolithic surfacings, and polymer concretes
耐化學腐蝕的灰漿薄漿整體面層和聚合物混凝土的熱膨脹系數和線收縮性的標準試驗方法The shrinkage reducing rate can reach to 70 % at the 7th day, and the shrinkage reducing rate can reach to 40 % at the 28th day. it doesn ’ t reduce the intension of the concrete. it can have an ability of 10 18 % of reducing water rate
通過對比試驗發現，聚丙烯酸鹽類減縮劑的最佳摻量為水泥質量的1 . 2 % ， 7天減縮率可達70 % ， 28天減縮率可達40 % ，且不降低混凝土的強度，具有10 18 %的減水率，有一定的緩凝作用。Next was an experimental study on modification of stone ballast concrete small hollow block. the influence of polypropylene fiber, expansion agent and both of them on permeability - resistance and both moisture expansion and dry shrinkage of the block were systematically tested. the testing results and theoretical analysis slowed that they all can improve its properties, among which polypropylene fiber can most effectively restrain it ’ s moisture expansion and drying shrinkage ; however, the block doubly blended with polypropylene fiber and expansion agent will be likely to most beneficially improve crack - resistance of wall filled with the block
試驗結果和理論分析表明，單摻聚丙烯纖維、單摻膨脹劑和雙摻聚丙烯纖維與膨脹劑均能改善混凝土空心砌塊的性能，其中，聚丙烯纖維更有利於限制單個砌塊的濕漲干縮，單摻聚丙烯纖維的空心砌塊濕脹干縮的波動性最小;雙摻聚丙烯纖維與膨脹劑對限制石渣砌塊濕脹干縮的效果不理想，但雙摻砌塊將更有利增強于砌塊填充墻的整體抗裂性。Through the investigation on the infiltration and cracking of concrete with addition of polypropylene fibers. the suitable addition of polypropylene fiber to minish the infiltration, crack and autoshrinkage of concrete was gained. the experiments indicate that polypropylene can minish concrete ' s infiltration, cracking and autoshrinkage, and the native fiber is more efficient than that made in brazil. all above proved that it is n ' t right that the finer the polypropylene fiber the better the performance of concrete
試驗結果表明聚丙烯纖維能有效改善混凝土的抗滲、抗裂性能並能有效減小混凝土的自收縮，國產聚丙烯纖維在減小混凝土的自收縮、改善混凝土的抗滲、抗裂性能方面更優于巴西聚丙烯纖維，說明了聚丙烯纖維改善混凝土性能並不是越細越好。分享友人