expansion concrete 中文意思是什麼
expansion concrete
解釋
膨脹混凝土-
To improve the binding strength between the deck slabs and deck surfacing layer of badong changjiang river highway bridge and to provide the surfacing layer with anti - cracking ductility, a series of technical measures has been taken in the construction of the deck surfacing of the bridge, including those of embedding binding reinforcement in the deck slabs, spraying inorganic binding agent between the slabs and layer, replacing part of the cement with micro expansion agent and adding appropriate amount of polypropylene fibers to the concrete
摘要巴東長江公路大橋橋面鋪裝，通過採取預埋橋面粘接鋼筋、噴塗無機界面粘結劑、用微膨脹劑替代部分水泥、在混凝土中摻入適量的聚丙烯纖維等措施來提高橋面板與鋪裝層間的界面粘結強度和給橋面抗裂增韌。 -
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。 -
Following is the factors ideating with the surface of old concrete in different way ( including brushing surface, chiseling surface, cleaving surface ), adherence agent ( including cement slurry, cement sand slurry, cement slurry with the u expansion agent ), the freeze - thaw circulation times and air - entraining. as a result, we found that the roughness influence on the adhesion capability of the new on old concrete to a large degree. the larger rougeness is, the larger the splitting tensile strength on the adhension face is. the kind of adhesion agent is also influence on the adherence capability of new on old concrete. the circulation times of freez - thaw have a large influence on the splitting tensile strength of adherence face of new on old concrete. the analysis of tests give some advices to the practical engineering
主要考察了老混凝土表面不同處理方式（刷毛面，鑿毛面，劈裂面） 、界面粘結劑類型（水泥凈漿，水泥砂漿， u型膨脹劑水泥漿） 、凍融循環次數等對新老混凝土粘結面劈拉強度的影響，以及凍融作用下新混凝土加氣對粘結面劈拉強度的影響。試驗結果表明，粗糙度對新老混凝土粘結性能有重要影響，隨著粘結面粗糙度的增大，粘結面劈拉強度不斷增加；界面粘結劑類型對新老混凝土粘結性能有一定影響，在凍融作用下， u型膨脹劑水泥漿粘結效果不如水泥凈漿和水泥砂漿；凍融循環對粘結面劈拉強度有較大影響，加氣能明顯改善新老混凝土粘結面的抗凍能力。 -
First, the thesis gives a detailed analysis about the causes and expressions of the medium and small - sized enterprises financing problems, concerning the relationship between banks and enterprises enterprises status, related policy and finance service etc. then, in order to solve the financial problems effectively during the developing process of the medium and small sized enterprises, on the basis of the development stage, concrete environment and characteristics of the medium and small sized enterprises in our country, the thesis gives relevant suggestions about the improvement of enterprises " inside financial environment channel expansion of the indirect f inane ing, more emphasis on direct financing trend of the state ' s policy and innovation of financial instruments etc. at last, in order to welcome the coming technology economy, the thesis especially analyze how to use the capital from at home and abroad to develop risk investment, to ease up the contradiction of capital supply and demand, and to support the fast development of the hi - tech medium and small - sized enterprises
然後，為有效解決中小企業發展中遇到的資金問題，根據我國中小企業所處的發展階段、具體環境和自身特點，結合我國金融市場的現狀和未來發展趨勢，從改善企業內源融資條件、拓展間接融資渠道、注重直接融資手段、國家政策取向、金融工具創新等方面，提出相應的對策建議。為迎接知識經濟的到來，本文還特別探討了利用國際、國內資金發展風險投資業務，緩解我國高科技中小企業資金需求與供給的矛盾，支持高科技中小企業快速發展的措施。本文試圖通過對中小企業融資問題的研究，探索我國中小企業特別足高科技中小企業發展面臨的一些共性問題，為我國中小企業融資方式和融資體制的改革略陳管見。 -
Standard specification for preformed sponge rubber cork and recycled pvc expansion joint fillers for concrete paving and structural construction
混凝土鋪面和結構建築用預制微孔橡膠軟木和可回收的pvc膨脹接縫填料的標準規范 -
The research and application of organic shrinkage reducing agent ( sra ) and non - organic expansion agent ( ea ) are drawing great attention among that of new - type concrete anti - cracking admixtures
摘要在新型混凝土抗裂外加劑中，有機類減縮劑及無機膨脹劑的研究與應用受到了廣泛的關注。 -
The results of experiment on the relationship between tensile strength, shrinkage, self - desiccation shrinkage and flat restraint cracking show that sra ' s physical shrinkage - reducing effect and ea ' s chemical expansion effect greatly enhance the volume stability of concrete and reduce the probability of early - cracking
對減縮劑與膨脹劑抗拉強度、干縮、自乾燥收縮及平板約束開裂的試驗結果表明： sra的物理減縮作用及膨脹劑的化學膨脹作用，大大提高了混凝土早期的體積穩定性，降低了早期開裂的概率。 -
Uea, a key research fruit of china construction material research institute, merges the pith of china expansion concrete, former ussr expansion concrete and usa expansion concrete, is a special concrete additive
我公司的所有產品均按國家標準組織生產，產品質量穩定可靠， u型混凝土膨脹劑uea是中國建築材料研究院一項重大科研成果。 -
Application of micro - expansion polypropylene fiber concrete to the deck pavement of badong highway bridge on yangtze river
微膨脹聚丙烯纖維混凝土在橋面防水鋪裝中的應用 -
Some problems on the application of expansion admixture and compensated shrinkage concrete
耐磨抗沖擊補償收縮混凝土的研究 -
In practical uses, the major performances of concrete are associated with the quantities, types and the service conditions of the expansion - admixture. the expansion admixtures of concrete available at present still have many shortcomings, such as the greater quantities required, the non - relevance between developments of concrete strength and durability and expanding speeds of expansion admixture, the evaluation of expanding effects, the def of aft etc. unfortunately, few achievements in these aspects have been obtained all over the world
在實際使用中，膨脹劑類型、摻量及其使用條件對混凝土的主要性能影響很大，現有的膨脹劑存在著實際摻量較大、混凝土強度及耐久性發展與膨脹劑的膨脹速率不協調、膨脹效能如何評價、鈣礬石aft相延遲性反應（ def ）等一系列問題，而目前國內外這方面的研究成果較少。 -
The major performances of concrete and mortars, which are mixed with different quantities of expansion admixtures under the same mix proportions, are studied systematically and deeply in this work. sulphoaluminate mixed with a type of new expanding component by use of the composite methods are studied in the laboratory, and some achievements have been obtained. the service conditions, the characteristics and the shortcomings of expansion admixture in the concrete engineering are analyzed and summarized based on literatures, and the expanding mechanism of concrete is discussed
本文試圖從膨脹劑不同摻量研究其對混凝土和砂漿主要性能的影響，進行了一系列宏觀力學性能試驗研究；利用差熱分析（ dta ） 、掃描電子顯微鏡（ sem ）等分析手段對鈣礬石等水化產物的結晶和生成量、形貌特徵進行微觀分析；並採用復合方法摻加新型膨脹組分對硫鋁酸鹽類膨脹劑（ uea ）進行了改性試驗研究，根據多因素模糊綜合評價方法就各類膨脹劑的主要性能進行綜合評價，得出摻加新型膨脹組分pt的膨脹劑性能較優，取得了明顯的效果。 -
It has a good compensation to shrinkage, and can improve the anti - cracking and anti - penetrating performance of concrete. it is often added to concrete to produce expanding concrete or the anti - cracking and anti - penetrating concrete, which are widely used in such engineering as waterproofing, anti - penetrating, mending etc. the expansion admixture include at present sulphoaluminate such as uea, ea - l etc ), calcium oxide, and some composite expansion admixtures
混凝土膨脹劑在普通混凝土中可抵消干縮或溫度降低引起的拉應力，起到良好的補償收縮作用，能提高混凝土的抗裂防滲能力，常用於配製膨脹混凝土或抗裂防滲混凝土，廣泛地應用於防水、抗滲、修補等工程中。 -
Research on the hydrate mechanism of green and low - alkali concrete expansion agent
綠色低堿混凝土膨脹劑水化機理研究 -
Abstract : the article concludes the function of concrete ? expansion agent and some problems in application, also tells us how to take measures to solve it
摘要:文章介紹混凝土膨劑的功能及在使用中存在的問題和解決措施。 -
The influence of shrinkage - reducing agent, polypropylene fiber and expansion agent on strength and dry shrinkage of the concrete were systematically tested
系統測試了減縮劑、聚丙烯纖維和膨脹劑對砌塊材料強度和干縮性能的影響規律。 -
By routine test and base experience, with contrastive method, the appropriate mix content and the effect to concrete strength of a kind of expansion agent were studied
摘要通過常規實驗和基礎實驗，採用對比的方法，研究了膨脹劑的適宜摻量和對水泥砂漿強度的影響。 -
Making use of traditional methods of compensating shrinkage, that is, added with appropriate expansion agent, compensating for the shrinkage of super high strength & high performance concrete has been realized
本研究採用傳統的補償收縮方法，在超高強混凝土中摻入合適的膨脹劑后，達到了補償超高強混凝土收縮的目的。 -
Secondly, the producing mechanism of crack in reinforced structure and factors which affect crack have been discussed, in the emphasis, the method is expounded, which applies first releasing then resisting, combination of releasing and resisting. in the method, flexible slit is applied firstly, which can make deformation of structure distributed, and decrease deformation energy, then the tiny expansion concrete and prestressed concrete with unbonded tendons are applied. and in the different phase, the compressive prestress is put on the concrete structure
其次，分析並論述了鋼筋混凝土結構裂縫產生的機理和影響因素，著重闡述了「利用先放后抗，抗放結合，綜合控制」的方法：即首先利用后澆帶，使混凝土結構分段變形，減小超長變形的影響；並採用微膨脹混凝土技術及無粘結預應力混凝土技術，分階段對混凝土結構施加一定的預壓應力，從而減小或完全抵消混凝土結構因混凝土硬化收縮引起的拉應力；再結合一些其他措施，成功實現鋼筋混凝土結構的超長無縫設計與施工。 -
This article incorporates with the practice for construction of mass concrete foundation structure of handan big world department store, according to the features in foundation structure design and the conditions of winter construction in this region, introduces micro - expansion concrete mix proportion design, pouring technology for mass concrete structure, the solution of the strengthen joint - strip and post - pouring joint strip in concrete foundation work, and temperature control for mass concrete
結合大世界商城底板大體積混凝土的施工實例，針對基礎結構的設計特點和當地冬季施工的氣候條件，介紹了補償性混凝土配合比設計、大體積混凝土澆築工藝、基礎混凝土加強帶和后澆帶施工工藝、底板混凝土溫度控制和自動化監測等多項綜合性技術。
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