土木工程英语Unit 2 Lecture 3.pptx

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土木工程英语Unit 2 Lecture 3.pptx

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Unit2CivilEngineeringmaterialsPartIIITextStudy

1.Buildingmaterialanymaterialwhichisusedforconstruction1.naturallyoccurringsubstances2.man-madeproductsIndustryofmanufacturingbuildingmaterialsissegmentedintospecificindustries—carpentry,insulation,plumbing,roofingwork.

2.SecretofconcreteConcreteliterallyholdsourcitiestogether.Butithasadirtysecret:theproductionofthisubiquitousgraymaterialreleasestonsofCO2eachyear,contributingtothecalamityofclimatechange.

3.IntroducinggreenmaterialsGreenbuildingmaterialsinclude:Renewableplantmaterials,likestrawandmudbrickTimbercertifiedtobesustainablymanagedRecycledmaterialsthatarenon-toxicandreusable.Theseofferalternativestoconcrete.

4.StrawbalemudbrickStrawbales:natural,locally-occurringmaterial;creatingwallsinsideaframe;replacingothermaterials;insulationprovider;affordablebutsustainable.Mudbrick:madeonsitefromlocalsoil(withenoughclaycontent);mixedwithwaterandreinforcingmaterials;pressedanddried;sustainable,recyclable,non-toxicandhealthy.

5.GrasscreteHempcreteGrasscrete:layingconcreteallowinggrassorfloratogrow;reducingconcreteusageimprovestormwaterabsorptionanddrainage.Hempcrete:createdfromthewoodyinnerfibersofthehempplant;boundwithlimeasconcrete-likeshapes;super-lightweight;fast-growingandrenewableresource.

6.TimberBambooTimber:absorbingCO2whentreesgrow;requiringlessenergy-intensiveprocessing;renewablewhenmanaged;biodiversehabitatensured.Bamboo:trendybutwithlonghistory;tensilestrength,lightweight,fast-growingrenewability;alternativetoconcreteandrebar.

7.RecycledplasticFerrockRecycledplastic:usingground-uprecycledplasticsandtrashtocreateconcrete;reducinggasemission,reducingweightandprovidingnewuseforplasticwaste.Ferrock:usingrecycledsteeldustandotherstocreateconcrete-likebutevenstrongerm