early age strength of concrete 中文意思是什麼

early age strength of concrete 解釋
混凝土早期強度
  • early : n 厄利〈姓氏〉。adj 1 早；（果實等）早熟的。2 早日的，及早的。3 早期的，很久以前的，古代的；近日...
  • age : n 1 年齡。2 成年〈滿廿一歲〉。3 老年，晚年。4 壽命；終生，一生。5 時代，時期，年代。6 〈口語〉很...
  • strength : n. 1. 力，力量，體力。2. 強度，濃度；長處；（要塞等的）抵抗力。3. 實力；兵力；全體人數，額定人數，編制。4. 筆力；文勢。5. （證券等的）市價堅挺。6. 〈美俚〉（可能有的）利潤。
  • of : OF ＝Old French 古法語。
  • concrete : adj 1 具體的，有形的；實在的，實際的。2 固結成的，混凝土製的。3 圖案詩歌的（參閱concrete poetry）...
  1. Early age strength of concrete

    混凝土早期強度
  2. Test results show that the steel fiber in concrete have more effectiveness on improving the splitting tensile strength and the flexural strength in the early age than after its hardening ; the flexural modulus of elasticity of sfrc are higher than the plain concrete at different ages while their compressive modulus of elasticity are almost the same. it ' s also shown that, similar to the plain concrete, the early - age loading decreases the strengths of sfrc, but, with the increase of the contents of the steel fiber things are getting better, especially for the splitting tensile strength and the flexural strength

    試驗結果表明：與性能穩定之後相比，在混凝土中摻入鋼纖維對它的早期劈裂抗拉強度和抗折強度有尤為顯著的提高作用；對各齡期的受壓彈性模量影響不大，而對提高抗折彈性模量有一定的效果；與素混凝土試件相同，在早期（強度達到28天強度的85前）對鋼纖維混凝土試件施加荷載會對它的各種強度產生一定的不利影響，但是摻入鋼纖維可以減輕這種不利影響，尤其對劈裂抗拉強度和抗折強度作用突出，並且含纖率越高，效果越明顯。
  3. For the concrete which losing water is little at early - age, strengthen curing, the strength of concrete will be compensated

    對早期失水較少的混凝土，加強濕養護，混凝土強度能得到較大的補償。
  4. On the basis of spot sample and laboratory experiment, authors studied the time - variant probability model early age period mechanical properties of high - strength concrete

    通過現場試驗建立了高強度混凝土早齡期力學性能的經時概率模型。
  5. All concrete structures are exposed to volume changes caused by hydration reactions in the early age. if the volume changes are restrained, stresses is generated which will cause cracking when it overcomes the tensile strength. as the mechanical properties of early age concrete vary with time, especially the creep degree depends on the time elapsed and the time at loading, to calculate the stress of concrete structure is a complex nonlinear problem. the finite element method ( fem ) can take account of the evolution of the stiffness properties, the development of thermal strain, creep, shrinkage and so on. in this paper, a general approach for numerically simulating this type of behaviour is presented firstly. then, how to solve this problem is introduced by the general finite element software ansys using the initial stress method. finally, a detailed description of an example calculation that demonstrates the potential of the numerical simulation strategy follows

    早期混凝土由於水化反應都會產生體積變化.如果體積變形受到約束就會產生應力，一旦超過混凝土的抗拉強度就會產生裂縫.由於早期混凝土的力學性能是隨時間變化的，特別是徐變，它不僅與加載時間有關而且同時隨齡期而變化，因此計算早期混凝土結構應力是較為復雜的問題.有限單元法不僅可以考慮混凝土剛度的變化，而且可以考慮溫度、徐變、收縮等因素.本文利用初應力法對通用有限元軟體ansys進行了二次開發，通過工程實例計算了高層建築地下室側墻早期混凝土應力的變化過程，並提出了相應的抗裂措施
  6. Various curing condition and different amount of water evaporated in early - age curing would lead to different strength of concrete

    早期養護條件不同，混凝土失水量不同，則混凝土中後期強度也不相同。
  7. Result show that the more the loss of water at early - age, the lower strength of concrete acquired

    研究結果表明，早期失水越多，混凝土中後期強度越低。
  8. The experiment test results of mechanical properties and durability of hprrc show : no matter at early age or later age, the ration of flexural strength to the cubic compression strength of hprrc is higher than ordinary concrete, and the brittleness of hprrc is reduced ; the bond performance of new - old concrete interface and chloride permeability are good ; its resistance to freeze and thaw, permeability are all excellent ; its volume stability is improved, and its cracking resistance is good

    配製出和易性優良（坍落度30mm ） 12 48h能滿足開放交通的hprrc 。 5 、 hprrc力學性能、耐久性能試驗結果表明：無論早期還是後期，其折壓比均比普通砼的有所提高，脆性有所降低；新老砼粘結性能優良；並具有優異的抗凍性、抗滲性、耐磨性，抗氯離子滲透能力強；體積穩定性大為提高，抗裂性好。
  9. 2. the research results indicate that the physical mechanical properties of hbc concrete such as compressive strength, flexural strength, splitting tensile strength, elasticity modulus and etc. is equivalent to that of opc concrete at age of 28d and remarkably surpasses opc concrete at 90d though its early age strength ( 3d, 7d ) is relatively lower. moreover, the relation of w / c ratio of hbc with compressive strength as well as strength at 7d with 28d ( c50 - c80 ) has been established and the effect of the dosage and type of fly ash on compressive strength of hbc has also been studied

    研究了高貝利特水泥高性能混凝土的抗壓、抗折、劈拉、彈性模量等一系列物理力學性能，結果表明，和opc混凝土相比， hbc混凝土早期（ 3d 、 7d ）抗壓強度、抗折強度、劈拉強度、彈性模量較低，但隨著齡期的增加， hbc混凝土28d諸項強度基本與之持平， 90d則全面超過opc混凝土；探討了高貝利特水泥高性能混凝土水膠比與28d抗壓強度的關系以及c50 c80強度范圍內高貝利特水泥高性能混凝土7d強度與28d強度的關系；此外，對粉煤灰摻量及品種對高貝利特水泥高性能混凝土抗壓強度的影響也進行了研究。
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