土木工程外文翻譯(更新版)
【正文】 nier, and Simon 再生骨料生產(chǎn)的鋼筋混凝土梁的抗彎性能一種混合配制新方法被用于檢測(cè)以粗再生混凝土骨料(簡(jiǎn)稱RCA)制成的鋼筋混凝土梁的彎曲性能，在這個(gè)方法中，RCA被視為由剩余砂漿和天然骨料兩種材料組成的混合物；然而，當(dāng)它以一定比例混合時(shí)，每個(gè)階段的含量和性質(zhì)就應(yīng)該被分開來考慮。雖然在水泥量、水灰比(w/c)以及RCA混凝土的混合比例方面做了適當(dāng)?shù)恼{(diào)整，所造出的混凝土比最早先生產(chǎn)的RCA混凝土具有更高的抗壓強(qiáng)度。為了驗(yàn)證這個(gè)假定，而進(jìn)行了廣泛的實(shí)驗(yàn)研究，通過測(cè)試彎曲作用下一定數(shù)量的RCA混凝土梁以及起控制作用的梁，僅天然粗骨料與RCA混凝土中的天然骨料類似。 crack spacing。 therefore, when proportioning a concrete with RCA, the volume fraction and relevant property of each phase is accounted for. Because an RCAconcrete mixture proportioned by the EMV method does not suffer from the inferiorities of RCAconcrete proportioned by conventional methods, it is reasonable to assume, contrary to previous findings, that reinforced concrete members made of RCAconcrete thus proportioned will not experience larger deflection and lower ultimate flexural strength pared to reinforced concrete members produced with similar grade conventional concrete made entirely with natural aggregates.To verify this assumption, an extensive experimental study was carried out by testing under flexure a number of reinforced RCAconcrete beams made with coarse RCA and panion control beams made of concrete containing only coarse natural aggregate with similar properties as the coarse natural aggregate in RCA. The investigated properties include deflection, crack spacing, cracking moment, yielding moment, ultimate flexural strength, cracking pattern, and failure modes. Two different sources of RCA, designated RCAM and RCAV, were used in the study and are obtained from recycled concrete processing plants in Montreal (M) and Vancouver (V), respectively. The natural aggregate in RCAM was natural limestone, whereas that in RCAV was natural riverbed gravel. Further details on the characteristics of the RCA used in this study can be obtained from Fathifazl. 英文翻譯2外文原文出處：International Journal of Applied Science, Engineering and Technology 5:4 Shatarat and Adel Assaf .USA.分析多跨簡(jiǎn)支預(yù)制橋梁的抗震性能和要求華盛頓州在1950年和1960年期間所建造的橋梁一般都采用多跨簡(jiǎn)支（簡(jiǎn)稱MSSS）預(yù)制系統(tǒng)。縱向位移基本不常見，主梁和梁帽上方的接觸長(zhǎng)度假定足夠承擔(dān)縱
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