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1、學(xué)兔兔www.xuetutu.com2016年第3期(總第317期)混凝土原材料及輔助物料Number3in2016(TotalNo.317)ConcreteMATERIALANDADMINICLEdoi:10.3969/j.issn.1002—3550.2016.03.015不同品質(zhì)再生粗骨料混凝土的力學(xué)性能及鮑羅米公式擬合王曉飛,李秋義,,羅健林,韓帥,張修勤(青島理工大學(xué)a.土木工程學(xué)院;b.藍(lán)色經(jīng)濟(jì)區(qū)工程建設(shè)與安全協(xié)同創(chuàng)新中心;c.山東省混凝土結(jié)構(gòu)耐久性工程研究中心,山東青島266033)摘要:通過(guò)簡(jiǎn)單破碎制得II類再生粗骨
2、料(JP),再經(jīng)過(guò)一次顆粒整形得到準(zhǔn)I類再生粗骨料(YK),再進(jìn)行二次顆粒整形獲得I類再生粗骨料(EK);然后分別進(jìn)行化學(xué)強(qiáng)化,制得化學(xué)強(qiáng)化后3種不同的再生粗骨料JPH、YKH、EKH。研究6種不同品質(zhì)再生混凝土的力學(xué)性能及強(qiáng)度計(jì)算式。結(jié)果顯示:不同品質(zhì)再生昆凝土的28d抗壓強(qiáng)度與灰水比的線性相關(guān)系數(shù)均大于90%,但不同品質(zhì)再生混凝土鮑羅米計(jì)算式的相關(guān)系數(shù)差異較大。EK再生混凝土的力學(xué)性能最好,以膠凝材料450kg/m為例,EK再生混凝土的28d抗壓強(qiáng)度僅比普通混凝土降低了40MPa。關(guān)鍵詞:再生粗骨料;整形;強(qiáng)化;再生混凝土;鮑羅
3、米計(jì)算式中圖分類號(hào):TU528.01文獻(xiàn)標(biāo)志碼:A文章編號(hào):l002—3550(2016)03—0060—05MechanicalpropertiesandBowromiformularegressionforrecycledcoarseaggregateconcretewithdiferentqualityWANGXiaofei,LIQiuyia,b,c,LUOJianlin一,HANShuai,ZHANGXiuqin(a.SchoolofCivilEngineering-b.CollaborativeInnovationCent
4、erofEngineeringConstructionandSafetyinShandongBlueEconomicZone;C.ShandongEngineeringResearchCenterforConcreteStructureDurability,QingdaoTechnologicalUniversity,Qingdao266033,China)Abstract:RecycledcoarseaggregateofclassII(JP)waspreparedbysimplecrushing,andthenquasiclas
5、sIrecycledcoarseaggregate(YK)wasacquiredthroughaparticleshapingprocess,andthenclassIrecycledcoarseaggregate(EK)wasfurtheracquiredthroughasecondparticleshapingprocess.AndthreedifferenttypesJPH,YKH,EKHofrecycledcoarseaggregatewereacquiredafterchemicallys~engthenedtreatme
6、nt.Themechanicalpropertiesandthestrengthformulaofsixdifferentqualityofrecycledconcretewerestudied.TheresultsshowthatEKrecycledconcretehasthebestmechanicalproperty28dcompressivestrengthofEKtyperecycledconcretewithbindermaterialof450kg/misonlyreducedby4.0MPathanthatoford
7、inaryconcrete.Thelinearcorrelationcoefficientofcompressivestrengthof28dwithdifferentwatercementratioofconcretequalityofregenerationwereaI1higherthan90%.butthecorrelationcoefi—cientdifferencebetweendifferentqualityofrecycledconcreteBowromiformula.Keywords:recycledcoarse
8、aggregate;particleshaping;reinforcement;recycledaggregateconcrete;Bowromiformula梁、鄧壽昌、孔德玉研究表明,再生混凝土的28d抗壓強(qiáng)度(.廠2。:)與灰水