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1、第47卷第10期哈爾濱工業(yè)大學(xué)學(xué)報(bào)Vol?47No?102015年10月JOURNALOFHARBININSTITUTEOFTECHNOLOGYOct.2015doi:10.11918/j.issn.0367?6234.2015.10.011陶泥對(duì)混凝土抗凍性能影響11112程云虹,黃菲,徐龍碩,侯建龍,李光祿(1.東北大學(xué)資源與土木工程學(xué)院,110819沈陽(yáng);2.東北大學(xué)理學(xué)院,110819沈陽(yáng))摘要:為探討陶泥作為輔助膠凝材料對(duì)混凝土抗凍性能的影響,采用快凍法進(jìn)行混凝土抗凍試驗(yàn).設(shè)計(jì)兩類混凝土,即未摻引氣
2、劑和摻引氣劑,每類中分別包含12組混凝土,其中,基準(zhǔn)混凝土1組,陶泥和粉煤灰分別取代水泥10%,20%,30%,40%的混凝土各4組;陶泥和粉煤灰共同取代水泥(10%(陶泥)+20%(粉煤灰),20%(陶泥)+10%(粉煤灰),20%(陶泥)+20%(粉煤灰))的混凝土3組.試驗(yàn)結(jié)果表明:未摻引氣劑時(shí),以陶泥取代水泥量30%的混凝土抗凍性能最佳,其他取代量的混凝土抗凍性能與基準(zhǔn)混凝土抗凍性能相當(dāng);取代水泥量為20%時(shí),陶泥混凝土抗凍性能略低于粉煤灰混凝土抗凍性能,其他取代量時(shí),陶泥混凝土抗凍性能與粉煤灰混凝土
3、抗凍性能相當(dāng);復(fù)摻陶泥和粉煤灰的混凝土的抗凍性能與相同取代量的單摻陶泥或粉煤灰的混凝土的抗凍性能相當(dāng);摻加引氣劑可以顯著提高陶泥混凝土的抗凍性能.故陶泥取代水泥后,混凝土抗凍性沒有降低,并且在某些取代量時(shí)有所提高.關(guān)鍵詞:陶泥;混凝土;抗凍性;二次水化反應(yīng)中圖分類號(hào):TU528.1;X705文獻(xiàn)標(biāo)志碼:A文章編號(hào):0367-6234(2015)10-0055-04Effectsofceramicpolishingpowderonfrostresistanceofconcrete11112CHENGYunhon
4、g,HUANGFei,XULongshuo,HOUJianlong,LIGuanglu(1.CollegeofResourcesandCivilEngineering,NortheasternUniversity,110819Shenyang,China;2.SchoolofSciences,NortheasternUniversity,110819Shenyang,China)Abstract:Thepaperdiscussedtheeffectsofceramicpolishingpowder,atype
5、ofsupplementarycementingmaterial,onconcretefrostresistance.Morespecifically,twokindsofconcrete(withoutairentrainingadmixtureandwithairentrainingadmixture)weredeveloped,andforeachcase,therewere12groupsofconcrete,including1groupofcontrolconcrete,4groupsofconc
6、retemixedwithceramicpolishingpowder,4groupsofconcretemixedwithflyash,and3groupsofconcretemixedwithceramicpolishingpowderandflyashsimultaneously,butthecementsubstitutionrateineachgroupweredifferent.Theconcretefrostresistancetestswerecarriedout,andsomevaluabl
7、eresultsareobtained.Firstly,whenthereisnotmixedairentrainingadmixture,thefrostresistanceofconcretewithceramicpolishingpowderisthebestone,inwhichthesubstitutionrateofcementwithceramicpolishingpowderis30%,andwithothersubstitutionrate,thefrostresistanceofconcr
8、etewithceramicpolishingpowderisthesameasthatofcontrolconcrete.Secondly,whenthereisnotmixedairentrainingadmixture,thefrostresistanceofconcretewithflyashisbetterthanthatofconcretewithceramicpolishingpowd