early shrinkage 中文意思是什麼
early shrinkage
解釋
早期收縮-
Study on early autogenous shrinkage of high strength lightweight aggregate concrete hslwac
高強輕集料混凝土的早期自收縮研究 -
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。 -
On the basis of the feature of paleostructure, paleogeography and lake level fluctuation in chang - 6 to chang - 8 oil - bearing layers, this text researchs paleogeographic feature and evolution. chang - 8 stages are the early days of lake basin outspread, chang - 7 stages are steadies stage of lake basin outspread, chang - 6 stages are shrinkage of lake basin, the lake level slowly droping, lake strandline moving eastward
根據古構造、古地理、湖平面升降等特點研究了長_ 6 ?長_ 8期巖相地理特點及其演化，長_ 8期是湖盆擴大的初期；長_ 7期為湖盆擴大階段中穩定期；長_ 6期為湖盆擴大階段中開始萎縮，湖平面繼續緩慢下降，湖岸線向東遷移。 -
The proportion of plastic shrinkage cracking is rather high in early cracking. the plastic shrinkage cracking would effect construction appearance and promote the propagation of drying shrinkage cracking or other types cracking, but also provide a passage for aggressive agents penetrating and moving to the concrete mass
塑性收縮裂縫在早期裂縫中佔有相當大的比重，其存在不僅影響工程外觀，促使乾燥收縮裂縫或其它形式裂縫的發展，而且還將為侵蝕性介質向混凝土基體滲透、遷移提供通道，對混凝土的耐久性造成嚴重影響。 -
Moreover, the autogenous shrinkage and the possibility of cracking in the early stage of the hpc also can be controlled, with the addition of the mineral additives
摻和料的加入還可以減小混凝土早期的自收縮，減少高性能混凝土早期開裂的幾率。 -
This paper aims at the seriousness of concrete structure crack and presents one of main cause is that concrete early - age ( especially autogenous shrinkage ) become large through the systems academic analysis
本文正是針對混凝土結構工程早期裂縫的嚴重性，通過理論分析，指出目前混凝土早期收縮（主要自收縮）的變大是造成這種早期裂縫的主要原因之一。 -
Among them, shrinkage - reducing agent and expansion agent were more effective to respectively reduce and compensate early age shrinkage of the concrete, on the contrary, polypropylene fiber was the most effective to restrain medium and long - term shrinkage of the concrete
其中，減縮劑和膨脹劑的減縮與補償收縮的效果主要表現在早期，而聚丙烯纖維的中長期限制效果最好。然後進行空心砌塊的改性試驗研究。 -
Due to high quantity and grade of cement, early shrinkage of super high strength & high performance concrete is larger than that of ordinary concrete
超高強混凝土由於採用高水泥用量和高標號水泥，其早期收縮明顯大於普通混凝土。 -
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。 -
Finally, the reason that the performances of new construction putty were improved was analyzed from the point of micro by sem, edxa and mip. the result and phenomena were explained in the course of experiment, the mechanism about shrinkage at early age and anti - cracking of polypropylene fiber were discussed elementary
最後，本文藉助掃描電鏡（ sem ）和能譜分析（ edxa ）及汞壓力測孔法（ mip ）等現代測試分析手段，從細觀的角度分析了新型外墻膩子粉性能改善的原因，並初步探討了聚丙烯纖維膩子的塑性收縮及阻裂增韌機理。 -
The paper has studied the influence of water - cement ratio on the early - age shrinkge and whole shrinkge through self - deviced experimental apparatus for measuring early - age shrinkage
通過自行設計早期收縮測試裝置研究了水灰比對混凝土早期收縮的影響規律並在此基礎上測試了混凝土總收縮。 -
The result of test shows it is not accurate to estimate concrete shrinkage if the early - age shrinkge is ignored, since the early - age shrinkge comprises the most part of the whole shrinkge
試驗結果表明：混凝土早期收縮占混凝土總收縮較大的比例，忽視這種收縮不能準確反映混凝土收縮本質。 -
The ring test result shows that tendency of concrete cracking is consistent with shrinkage and veritifies early - age shrinkage is responsible for the concrete early - age crack
通過圓環法混凝土抗裂試驗，驗證了混凝土收縮與開裂趨勢的一致性，進一步證明了早期收縮對混凝土早期裂縫的重要影響。 -
The effects of plain concrete expanding admixture on the early shrinkage of high performance concrete
普通混凝土膨脹劑對高性能混凝土早期收縮的影響 -
The developments of restraining stress, creep behavior and elastic modulus in concrete were measured under different restraint degrees by uniaxial restrained shrinkage tea, and the influence of restraint degree on evaluation of cracking sensitivity in early concrete was alto discussed
採用了單軸約束試驗方法，分析了不同約束程度下混凝土約束應力、鬆弛性質和彈性模量的發展，並討論了約束程度對早期開裂敏感性評價的影響。 -
The original emm is adjusted. the new emm not only retains the simple expression, but also has a satisfied precision for calculating the restraining stress of the scc walls. the shrinkage compensation coefficient y is proposed for quantitatively estimating the effectiveness of die expansion at early age compensating the shrinkage at later stage
基於以上認識，修正了原有的等效模量法，將總約束應力表示為早期膨脹和後期收縮兩個單調變形過程引起的分項應力之和，在保留其簡單形式的同時，使之在容許誤差下，適用於補償收縮混凝土墻的約束應力計算。 -
Since pump high - flowability concrete commenced in late 70 ' s, it has been put to extensive application due to its advantages of fast, high - efficiency and stable quality. but its high flowing property and pumpability also cause some negative effects, such as serious shrinkage cracks at early age, which arouses wide social concern
泵送高流態混凝土自從70年代末期產生以來，以其快速高效、質量穩定等特點得到了廣泛的應用，但它的高流動性和可泵性也產生了一些負面作用，如早期收縮開裂現象比較嚴重，引起了社會的普遍關注。 -
Early age cracking of concrete has re - emerged as an important issue all over the world in recent years. the stress, due to restrained volume change related to thermal deformation and shrinkage in the early age concrete, is the main driving force for the deleterious cracking in the construction stage. during the development of the stress, creep, a very important property of concrete, is always developing. creep contributes to 40 ? - 50 ? reduction of the elastically induced stress in the restrained specimen. ring test, a qualitative test, can provide information to assess the potential for cracking of different concrete. an overview of ring test developed in recent years and mechanism of uniaxial tensile creep test is described in this paper at first. then, an innovative test equipment based on ring test is outlined
近年來混凝土早期裂縫問題再次引起全球工程界的廣泛關注.早期混凝土由於體積變形受到約束而產生的應力是導致混凝土開裂的主要因素.在混凝土應力發展的同時，混凝土徐變也在同時發生著變化.有研究表明，徐變能減少40 ? - 50 ?的早期應力.圓環試驗是用於定性評價混凝土材料抗裂性能的試驗方法之一.本文首先分析了圓環試驗和單軸拉伸徐變試驗的原理，創造性地將圓環試驗用於測量早期混凝土的干縮徐變，並設計了試驗方案 -
With a slab test of restricted shrinkage, the effect of polypropylene fiber, steel fiber and expansive agent on early - age plastic shrinkage and cracking of concretes with high content mineral admixtures is investigated
摘要採用平板限制收縮試驗法，研究了聚丙烯纖維、鋼纖維與膨脹劑及其復合技術對大摻量礦物摻合料混凝土早期塑性收縮開裂的影響。 -
Shrinkage deformation is a driving force to stress generation and cracking in early concrete, whereas the occurrence of cracking depends on the restraint condition
摘要收縮變形是混凝土早期開裂的驅動力，然而是否會發生開裂還與約束條件密切相關。
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