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1、學(xué)兔兔www.xuetutu.com第29卷第l期建筑科學(xué)與工程學(xué)報(bào)NO．1JournalofArchitectureandCivilEngineeringVo1．292O12年3月Mar．2012文章編號(hào)：16732049(2012)01005(；07再生骨料取代率對(duì)再生混凝土耐久性的影響應(yīng)敬偉，肖建莊(1．濟(jì)大學(xué)建筑一r程系，上海200092；2．同濟(jì)大學(xué)先進(jìn)士術(shù)1==程材料教育部重點(diǎn)實(shí)驗(yàn)室，f海200092)摘要：在對(duì)大量文獻(xiàn)進(jìn)行研究與對(duì)比分析的基礎(chǔ)上，總結(jié)了近l1年來各國再生混凝土耐久性
2、的研究成果，包括再生混凝土抗氯離子滲透性、抗凍性、耐磨性、抗碳化性。通過灰色關(guān)聯(lián)度定量分析了再生混凝土氯離子滲透性影響因素的主次關(guān)系。結(jié)果表明：再生混凝土的抗氯離子滲透性、抗凍性和耐磨性隨再生粗骨料取代率增加而變差，混凝土耐磨性隨再生細(xì)骨料取代率的增加而變好，大部分混凝土的抗碳化性隨再生粗骨料取代率增加而變差，少部分出現(xiàn)變異；通過灰色關(guān)聯(lián)分析得到的再生混凝土氯離子滲透性影響因素從大到小依次為水灰比、摻合料、混凝土齡期。關(guān)鍵詞：再生骨料取代率；再生混凝土；耐久性；氯離子；抗凍性；耐磨性；碳化中圖分
3、類號(hào)：TU528．79文獻(xiàn)標(biāo)志碼：AInfluenceofRecycledAggregateReplacementRatioOilDurabilityofRecycledAggregateConcreteYINGJingwei。XIA()Jian—zhuang'(1．DepartmentofBuildingEngineering，TongjiUniversity，Shanghai200092，C；l1ina2．KeyLaboratory()fAdvancedCivilEngineeringMat
4、erialsofMiniswyofEducati()I1．TongjiUniversilY，Shal~ghai200092，Chin~1)Abstract：Basedontheintensivereferenceinvestigations，authorsreviewedtheresearchachievementsonrecycledaggregateconcrete(RAC)durabilityinthepast1lyearsathorneandabroad，whichincludingch
5、lorideionpermeability，frostresistance，abrasiveresjtance。andcarbonationresistance．Throughthegraycorrelationquantitativeanalysis，theprimaryandsecondaryrelationsofvariousfactorsinfluencingthechlorideionpermeabilitv。fRACwerestudied．Resultsshowthatthechlo
6、rideionpermeability，frostresistanceandabrasiveresistanceofRACbecomeworsewiththeincreasingofrecycledcoarseaggregatereplacementratio．Theabrasiveresistanceofconcretet)ecomesbetterwiththeincreasingofrecycledfineaggregatcreplacementratio．However，thecarbon
7、izationresistanceofmostconcretebecomebetterwiththeincreasingofrecycledcoarseaggregatereplacementratio，alittleofwhichappeardeviation：accordingtotheimportanceoftheinfluenceonthechlorideionpermeabilityofRACbasedongraycorrelationanalysis，theinfluencingse
8、quenceoftheimpactfactorsis：waterccmentrati()。admixture，concretecuringage．Ke，words：recycledaggregatereplacementratio；recycledaggregateconcrete；durability；cb1orideion；frostresistance；abrasiveresistance；carbonati()n收稿日期：2(111—1022基金項(xiàng)目：國家自然科學(xué)基金項(xiàng)目(5Ⅲ17834
