-101-第45卷第6期非金属矿Vol.45No.62022年11月Non-MetallicMinesNovember,2022加速碳化养护电石渣制备新型建材制品研究陈惠敏1房延凤1*孔靖勋2姚淑红1(1沈阳建筑大学材料科学与工程学院,辽宁沈阳110168;2辽宁省交通规划设计院有限责任公司,辽宁沈阳110005)摘要以电石渣为主要原料,在CO2体积分数为99%,压力为0.2MPa的条件下对电石渣进行碳化养护,探究成型压力与水固比对碳化制品抗压强度和固碳量的影响。结果表明,碳化反应过程中生成大量方解石填充在孔隙中,成型压力为8MPa时,固碳量达到最大值23.2%,成型压力超过8MPa时,固碳量逐渐下降;成型压力为14MPa时,抗压强度达到最大值27.5MPa;最佳水固比为10%,此时固碳量和抗压强度均达到最大值,分别为23.2%和21.3MPa。关键词电石渣;碳化;成型压力;水固比;固碳量中图分类号:TU526;TQ172.4文献标志码:A文章编号:1000-8098(2022)06-0101-04StudyonthePreparationofCarbideSlagBasedNewBuildingMaterialsbyAcceleratedCarbonationCuringChenHuimin1FangYanfeng1*KongJingxun2YaoShuhong1(1SchoolofMaterialsScienceandEngineering,ShenyangJianzhuUniversity,Shenyang,Liaoning110168;2LiaoningTransportationPlanningandDesignInstituteCo.,Ltd.,Shenyang,Liaoning110005)AbstractInthispaper,carbideslagcompactsarecarbonatedundertheconditionsofCO2concentrationof99%andpressureof0.2MPafor2htopreparebuildingmateriasproducts.Theeffectofmoldingpressureandwatertosolidratiooncompressivestrengthandcarboncaptureabilitywereinvestigated.Theresultsshowthatcalciteformedandfilledintheporesduringthecarbonationreactionandthecarbonuptakereachesamaximumof23.2%whenthemoldingpressureis8MPa.Thecarbonuptakeamountgraduallydecreaseswhenthemoldingpressureexceeds8MPa.Thecompressivestrengthofcalciumcarbidecompactsreachesthemaximumvalueof27.5MPawhenthemoldingpressureis14MPa.Theoptimumwatertosolidratiowas10%,andthecarbonuptakeandcompressivestrengthreachethemaximumvalueof23.2%and21.3MPa,respectively.Keywordscarbideslag;carbonation;moldingpressure;water-solidratio;CO2uptake电石渣是在水解电石制取乙炔过程中产生的工业固体废渣,每吨电石约产生1.2t电石渣[1]。电石渣碱性强,不易运输,侵蚀土壤,处理不当会造成严重的生态破坏。目前,电石...