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《不同水膠比下礦渣粉與粉煤灰對(duì)混凝土強(qiáng)度及抗氯離子滲透性能的影響》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、學(xué)兔兔www.xuetutu.com2010年第1期【總第243期)混凝土原材料殛輔助物料Number1in20l0(TotalNo.243)ConcreteMATERIALANDADMINICLEdoi:10.3969~.issn.1002—3550.2010.01.028不同水膠比下礦渣粉與粉煤灰對(duì)混凝土強(qiáng)度及抗氯離子滲透性能的影響何廷樹,蘇富贊’,包先誠(chéng)。楊新社,李少輝,趙云中z(1.西安建筑科技大學(xué)西部建筑科技國(guó)家重點(diǎn)試驗(yàn)培育基地,陜西西安710055;2浙江聲威集團(tuán)公司,陜西成陽(yáng)713700)摘要:在水膠比分別為O.60、0.50、0.28三種情
2、況下,研究了礦渣粉和粉煤灰單摻及復(fù)摻對(duì)混凝土強(qiáng)度及抗氯離子滲透性能的影響。結(jié)果表明:無論水膠比大小,II級(jí)粉煤灰均不能等量取代P·O42.5R級(jí)水泥,應(yīng)超量取代,且水膠比越大,超量系數(shù)越大;在研究的摻量范圍內(nèi),$95礦渣粉可等量取代P·O42.5R級(jí)水泥,且會(huì)增加混凝土強(qiáng)度。在合適摻量范圍內(nèi),無論水膠比高低,無論混凝土強(qiáng)度增大或減小,礦渣粉和粉煤灰均可提高混凝土抗氯離子滲透能力,但當(dāng)摻量接近時(shí),礦渣粉對(duì)提高混凝土抗氯離子滲透性的能力遠(yuǎn)大于粉煤灰;顆粒多為球形微珠的粉煤灰摻入混凝土中,其對(duì)抗?jié)B性的貢獻(xiàn)大于對(duì)強(qiáng)度的貢獻(xiàn)。關(guān)鍵詞:混凝土;礦渣粉;粉煤灰;抗壓強(qiáng)度
3、;抗氯離子滲透性能中圖分類號(hào):TU528.041文獻(xiàn)標(biāo)志碼:A文章編號(hào):1002—3550(2010)Ol一0086—03Influenceofslagandflyashonconcretestrengthandresistancetochlorideionpenetrationperformanceunderdifferentwater-cementratioHETing-shu。,SUFu-yun,BAOXian—cheng,YANGXin-she2,LIShao-hui。ZHAOYun-zhong(1.StateKeyLabofWesternArch
4、itecture&TechnologyCultivatingBase,Xi’anUniversityofArchitecture&Technology,Xi’an710055、China;2.ZhejiangShengweiCementGroup,Xianyang713700,China)Abstract:Atthewater-binderratiobeing0.60,0.50and0.28respectively.theinfluencesofslagandflyashsingle—usedorcompoundedonthecompressivestre
5、ngthandresistancetochlorideionpenetrationofconcretewereinvestigated.Theresultsshowthatnomatterhowmuchthewater-binderratio,flyashof2ndgradecannotreplaceequivalentlyP‘O42.5Rcement,whileshouldreplaceexcessively,andthereplacingexcessivecoefficientshouldbeenhancedwiththeincreaseofwater
6、-binderratio.Underthescopeofamountusedinthepaper,$95slagcanreplaceequivalentlyP‘O42.5Rcement,andcanincreasethestrengthofconcrete.Undertheproperscopeofamountused.nomatterhowmuchthewater-binderratioandthestrengthofconcrete,bothslagandflyashcanimprovetheresistancetochlorideionpenetra
7、tionofconcrete,andthea—bilityofslagimprovingtheresistancetochlorideionpenetrationismuchmorethanthatofflyash,whilethelatterwithmanysphericalpaniclescontributestotheimpermeabilitymorethantothestrengthofconcrete.Keywords:concrete;slag;flyash;compressivestrength;resistancetochlorideio
8、npenetration性混凝土,研究?jī)煞N礦物摻合料單摻與復(fù)摻對(duì)混