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ID:38696469
大小:99.50 KB
页数:14页
时间:2019-06-17
《土木工程专业英语课后题答案》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、14英译汉LessonOneSandcreteisayellow-whitebuildingmaterialmadefromPortlandcementandsandinaratioofcirca1:8.Itisthemainbuildingmaterialforwallsofsingle-storeybuildings(suchashousesandschools)incountriessuchasGhanaandNigeria.Measuredstrengthsfocommerciallya
2、vailableSandcreteblocksinNigeriawerefoundtobebetween0.5and1N/mm,whichiswellbelowthe3.5N/mmthatislegallyrequiredthere.Thismaybeduetotheneedofthemanufacturerstokeepthepricelow,andsincethemaincost-factoristhePortlandcement,theyreducethat,whichresultsina
3、blockthatstartsbehavingmorelikeloosesand.翻译:sandcrete是黄白色建筑材料制成的波特兰水泥和沙子的比例大约1:8.it是主要的建筑墙体材料的单层建筑(如房屋和学校)在加纳和尼日利亚等国家。测量优势的商用sandcrete块在尼日利亚被发现之间的0.5和1牛顿/毫米,这是远远低于3.5牛顿/毫米,是法律所要求的有。这可能是由于需要的厂家保持价格低,因为主要cost-factor是波特兰水泥,他们减少,从而在一块,开始表现得更像松砂。LessonTwo
4、Bydefinition,thecompressivestrengthofamaterialisthatvalueofuniaxialcompressivestressreachedwhenthematerialfailscompletely.Thecompressivestrengthisusuallyobtainedexperimentallybymeansofacompressivetest.Theapparatususedforthisexperimentisthesameasthatu
5、sedinatensiletest.However,ratherthanapplyingauniaxialtensileload,auniaxialcompressiveloadisapplied.Ascanbeimagined,thespecimen(usuallycylindrical)isshortenedaswellasspreadlaterally.Ingeneral,compressivestrengthsareusuallygreaterthantensilestrengths.A
6、nexampleofamaterialwithamuchhighercompressivestrengththantensilestrengthisconcrete.Ceramicstypicallyhaveamuchhighercompressivestrengththantensilestrength.Compositematerialstendtohavehighertensilestrengthsthancompressivestrengths.Onesuchexampleisglass
7、fiberepoxymatrixcomposite.根据定义,材料抗压强度是价值的单轴压应力达到材料时完全失败。抗压强度通常是获得实验的方式压缩试验。该仪器用于本实验所使用的相同的拉伸试验。然而,而不是采用单轴拉伸,单轴压缩载荷应用。可以想像,标本(通常圆柱形)缩短,以及横向蔓延。一般来说,通常是更大的抗压强度比抗拉强度。例材料的抗压强度远大于其抗拉强度是混凝土。陶瓷通常具有抗压强度远大于其抗拉强度。复合材料往往有较高的拉伸强度比抗压强度。其中一个例子是玻璃纤维/环氧树脂基复合材料。第三课原文:
8、Temporarycantileversareoftenusedinconstruction.Thepartiallyconstructedstructurecreatesacantilever,butthecompletedstructuredoesmotactasacantilever.Thisisveryhelpfulwhentemporarysupports,orfalsework,cannotbeusedtosupportthestructurewhileitisbeingbuilt(
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